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Mary Munini, a smallholder farmer in Vyulya, in Kenya’s Machakos County, inspects her maize crop. She planted the farm-saved seed, which does not tolerate drought or severe heat, so she is expecting a massive crop loss this season. (Photo: Joshua Masinde/CIMMYT)

Drought-tolerant hybrid seed offers farmers reprieve from hunger

Written by Jérôme Bossuet on . Posted in Features.

MACHAKOS, Kenya (CIMMYT) — The scorching heat from the sun does not stop Mary Munini, a middle-aged smallholder farmer in Vyulya, Machakos County, from inspecting her distressed maize crop. Traces of worry cloud her face. “I will not harvest anything this season,” she says, visibly downcast.

Like many other smallholder farmers spread across the water-stressed counties of Machakos, Makueni and Kitui, in Kenya’s lower eastern region, Munini is staring at a massive crop loss. Prolonged dry spells have for years threatened the food security and livelihoods of many rural families in the region who depend entirely on rain for their agricultural production. Here, most smallholder farmers typically plant farm-saved maize seeds, which lack the attributes to tolerate harsher droughts, extreme heat or water stress. With such conditions, farmers can hardly harvest any maize.

“We just had a little rain at the start of planting. Since then, we have not had any more rain. As you can see, my maize could not withstand the extended dry spell,” says Munini. Like her, over 80 percent of Kenyans depend on maize as their main staple food to supply their dietary requirements, especially in rural areas.

Mary Munini, a smallholder farmer in Vyulya, in Kenya’s Machakos County, inspects her maize crop. She planted the farm-saved seed, which does not tolerate drought or severe heat, so she is expecting a massive crop loss this season. (Photo: Joshua Masinde/CIMMYT)
Mary Munini, a smallholder farmer in Vyulya, in Kenya’s Machakos County, inspects her maize crop. She planted the farm-saved seed, which does not tolerate drought or severe heat, so she is expecting a massive crop loss this season. (Photo: Joshua Masinde/CIMMYT)

In a neighboring farm, the situation is different. The owner, Gitau Gichuru, planted the SAWA hybrid, an improved maize seed variety designed to withstand drought conditions. This variety was developed by scientists at the International Maize and Wheat Improvement Center (CIMMYT) and promoted to Kenyan farmers by Dryland Seed, a local seed company. This initiative to improve maize farmers’ climate resilience in the region was possible thanks to the support of the Bill & Melinda Gates Foundation under the Stress Tolerant Maize for Africa (STMA) project. With the right agronomic practices, the SAWA hybrid can return a yield advantage of up to 20 percent compared to other popular drought-tolerant hybrids in the region, according to Dryland Seed’s managing director, Ngila Kimotho.

“This variety has become so popular in this region that we have decided to make it our flagship brand. There are occasions when the demand is so high that we run out of stock,” Kimotho says.

Farmer Gitau Gichuru (right) shows maize from his farm to CIMMYT’s regional representative for Africa, Stephen Mugo. Gichuru planted SAWA hybrid maize, developed by CIMMYT scientists. (Photo: Joshua Masinde/CIMMYT)
Farmer Gitau Gichuru (right) shows maize from his farm to CIMMYT’s regional representative for Africa, Stephen Mugo. Gichuru planted SAWA hybrid maize, developed by CIMMYT scientists. (Photo: Joshua Masinde/CIMMYT)

Reaping the benefits

The company distributes improved seeds through a network of about 100 agrodealers across Kenya. One of the most effective ways to promote drought-tolerant hybrids such as SAWA is demonstration plots managed by lead farmers, who can showcase to their peers the hybrid’s performance under recommended agronomic practices. Most of the demo farms are located by the roadside for better visibility to road users, who frequently stop and ask about the healthy-looking maize crop. Field days have also had a positive effect of creating awareness and getting farmers to adopt the SAWA hybrid and other improved seed varieties. Farmers attending field days are ordinarily issued with small seed packs as samples to try out on their farms.

Gichuru, who planted the SAWA hybrid maize seed for the first time last season, is happy with the results. “I decided to try it on a portion of the land that is sandy. We have only had some little rain, twice or so, at the time of planting and during the vegetative state. To be honest, I didn’t expect the crop to amount to anything. But, as you can see, I am looking forward to a good harvest,” Gichuru says.

The managing director of Dryland Seed, Ngila Kimotho (left), shows packages of SAWA maize seeds at the company’s office. (Photo: Jerome Bossuet/CIMMYT)
The managing director of Dryland Seed, Ngila Kimotho (left), shows packages of SAWA maize seeds at the company’s office. (Photo: Jerome Bossuet/CIMMYT)

Doris Muia, a mother of three who has planted the hybrid for two years at her farm, is equally happy with the outcome. She says her household will never lack food and she hopes to get additional income from the sale of the surplus maize produce.

“When we see how the varieties that we have developed such as the SAWA hybrid are putting smiles on farmers’ faces, this makes us very happy,” expresses Stephen Mugo, CIMMYT Regional Representative for Africa.

For some farmers, however, it is hard to gather the money to buy improved seed varieties. The little income Munini earns from her small shop goes towards supporting her children’s education, and she often has nothing left to buy improved hybrid seed varieties, despite being aware of the advantages. In other instances, some farmers often buy small portions of the improved maize variety and mix it with farm-saved seed stock or poor-quality seeds from informal sources.

“The expectation is that if one variety succumbs to drought or severe heat, the next variety may survive. However, with proper agricultural practices, hybrids such as SAWA can cope well against such climate stresses, thereby improving the smallholders’ livelihood and food security,” concludes Mugo.

Doris Muia shows how well SAWA maize is doing at her farm, despite limited rainfall. (Photo: Joshua Masinde/CIMMYT)
Doris Muia shows how well SAWA maize is doing at her farm, despite limited rainfall. (Photo: Joshua Masinde/CIMMYT)

The Stress Tolerant Maize for Africa (STMA) project seeks to develop maize cultivars with tolerance and resistance to multiple stresses for farmers, and support local seed companies to produce seed of these cultivars on a large scale. STMA aims to develop a new generation of over 70 improved stress tolerant maize varieties, and facilitate production and use of over 54,000 metric tons of certified seed.

The STMA project is funded by the Bill & Melinda Gates Foundation and USAID.

Farmers visit a field from Total LandCare demonstrating conservation agriculture for sustainable intensification practices in Angónia, Tete province, Mozambique.

Policy forum in Mozambique recommends scaling sustainable agriculture practices

Written by Jérôme Bossuet on . Posted in Features.

A woman stands on a field intercropping beans and maize in Sussundenga, Manica province, Mozambique. (Photo: Luis Jose Cabango)
A woman stands on a field intercropping beans and maize in Sussundenga, Manica province, Mozambique. (Photo: Luis Jose Cabango)

For many small farmers across sub-Saharan Africa, the crop yields their livelihoods depend on are affected by low-quality inputs and severe challenges like climate change, pests and diseases. Unsustainable farming practices like monocropping are impacting soil health and reducing the productivity of their farms.

Sustainable intensification practices based on conservation agriculture entail minimal soil disturbance, recycling crop plant matter to cover and replenish the soil, and diversified cropping patterns. These approaches maintain moisture, reduce erosion and curb nutrient loss. Farmers are encouraged and supported to intercrop maize with nitrogen-fixing legumes — such as beans, peas and groundnuts — which enrich the soil with key nutrients. Farmers are equally advised to cultivate their crops along with trees, instead of deforesting the land to create room for farming.

These practices result in higher incomes for farmers and better food and nutrition for families. Adopting conservation agriculture also improves farmers’ climate resilience. Combined with good agronomic practices, conservation agriculture for sustainable intensification can increase yields up to 38 percent.

Since 2010, the Sustainable Intensification of Maize and Legume Cropping Systems for Food Security in Eastern and Southern Africa (SIMLESA) project has promoted effective ways to produce more food while protecting the environment across Eastern and Southern Africa. In particular, the SIMLESA project aims at sustainably increasing the productivity of maize and legume systems in the region.

The SIMLESA project demonstrated the advantages of deploying low-carbon and low-cost mechanization adapted to smallholder farming: it addresses labor shortages at critical times like planting or weeding, boosting farmers’ productivity and yields. The SIMLESA project introduced mechanization in different phases: first improved manual tools like the jab planter, later draft power machinery innovations such as rippers, and finally motorized mechanization in the form of small four-wheel tractors.

Farmers visit a field from Total LandCare demonstrating conservation agriculture for sustainable intensification practices in Angónia, Tete province, Mozambique.
Farmers visit a field from Total LandCare demonstrating conservation agriculture for sustainable intensification practices in Angónia, Tete province, Mozambique.

From proof of concept to nation-wide adoption

In Mozambique, conservation agriculture-based sustainable intensification practices have significantly expanded: from 36 farmers in six villages in four districts in 2010, to over 190,000 farmers in more than 100 villages in nine districts by the end of 2018. This remarkable result was achieved in collaboration with partners such as the Mozambican Agricultural Research Institute (IIAM), extension workers, communities and private companies.

“Smallholder agriculture mechanization reduced the amount of labor required for one hectare of land preparation, from 31 days to just 2 hours. This enabled timely farming activities and a maize yield increase of about 170 kg per hectare, reflecting an extra 3-4 months of household food security,” said the national coordinator for SIMLESA in Mozambique, Domingos Dias.

Following its successes, SIMLESA and its partners have embarked on a series of meetings to discuss how to leverage public-private partnerships to expand conservation agriculture practices to other regions.

Throughout February and March 2019, a series of policy forums at sub-national and national levels will be held across the seven SIMLESA countries: Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania and Uganda.

The first policy dialogue took place on February 7 in Chimoio, in Mozambique’s district of Manica. Key agriculture stakeholders attended, including representatives from CIMMYT, IIAM, the Ministry of Agriculture, as well as policy makers, private sector partners and international research institutes.

Participants of the SIMLESA policy forum in Chimoio, Manica province, Mozambique, pose for a group photo.
Participants of the SIMLESA policy forum in Chimoio, Manica province, Mozambique, pose for a group photo.

“We are delighted at SIMLESA’s unique strategy of involving multiple partners in implementing conservation agriculture for sustainable intensification practices. This has, over the years, allowed for faster dissemination of these practices and technologies in more locations in Mozambique, thereby increasing its reach to more farmers,” said Albertina Alage, Technical Director for Technology Transfer at IIAM. “Such policy forums are important to showcase the impact of conservation agriculture to policy makers to learn and sustain their support for scaling up conservation agriculture for sustainable intensification,” she added.

Forum participants called for better coordination between the public and the private sector to deliver appropriate machinery for use by smallholders in new areas. They recommended adequate support to enable farmers to better integrate livestock and a diverse cropping system, as well as continue with conservation agriculture trials and demonstration activities. Besides involving farmers, their associations and agro-dealer networks in scaling conservation agriculture initiatives, participants agreed to promote integrated pest and disease management protocols. This is considering the recent outbreak of the fall armyworm, which devasted crops in many countries across sub-Saharan Africa.

“The SIMLESA project is and will always be a reference point for our research institute and the Ministry of Agriculture in our country. The good progress of SIMLESA and the results of this forum will help to draw strategies for continuity of this program implemented by government and other programs with the aim to increase production and productivity of farmers,” Alage concluded.

The SIMLESA project is a science for development alliance, funded by the Australian Centre for International Agricultural Research (ACIAR) and led by the International Maize and Wheat Improvement Center (CIMMYT), in collaboration with national research institutes in Ethiopia, Kenya, Malawi, Mozambique and Tanzania.

Breaking Ground: Fernando H. Toledo researches new models of analysis under simulated scenarios

Written by Leslie Domínguez on . Posted in Features.

Postcard_Fernando Toledo

Genomics is a wide theme of interest for geneticists. As part of the efforts to advance on this subject, Fernando H. Toledo, associated scientist in agricultural statistics at the International Maize and Wheat Improvement Center (CIMMYT), is working on the research of genomic selection models to increase accuracy. His research considers several complex traits and environmental conditions under climate change scenarios.

The research in which Toledo works is multidisciplinary — it involves genetics and breeding knowledge, as well as statistics and computer science. “This work is fundamental for the breeding and farming community. Our aim is to allow breeders to pursue precise selection of new genetic materials with good performance and ensuring food security in the field under varying environmental conditions.”

Fernando H. Toledo was born in São Paulo, Brazil, but grew up in Curitiba, Paraná, one of the biggest agricultural states in the country. He obtained his engineering degree, with a major in crop science, at Paraná Federal University.

He got his master’s degree in genetics and plant breeding at Lavras Federal University, under the supervision of Magno Ramalho, one of the most prestigious breeders in Brazil. During his Ph.D. in quantitative genetics at the Agricultural College of the University of São Paulo, Fernando was advised by Roland Vencovsky, known as the father of quantitative genetics in the country. “The main lesson I took from both of them was that biometrics science must try to answer the breeders’ questions.”

Toledo got a scholarship from the Brazilian National Council for Scientific and Technological Development (CNPq) to spend a season at CIMMYT in 2013, where he developed part of his thesis about the use of selection indices under the supervision of José Crossa.

CIMMYT’s work is highly relevant to breeding activities in Brazil. It dates back to the 1950s when Brazilian breeders and geneticists took maize populations and varieties to be important resources of their current germplasm. “The public and private sectors in Brazil recognize the importance of CIMMYT, which awoke my interest in working in a relevant institute for agriculture in developing countries.”

In 2015, Toledo applied for a postdoctoral position at the Biometrics and Statistics Unit of the Genetic Recourses Program at CIMMYT. He started working as an associate scientist in 2017.

As part of this unit, Toledo is currently involved in the planning and analysis of field trials comprising phenotypic and genomic data. He is developing new models and methods for these analysis as well as plant breeding simulations. “Genomic selection has been used over CIMMYT’s breeding programs before but there are still a lot of improvements to implement, so new models of analysis can be tested under simulated scenarios, which results in better recommendations for breeders.”

On top of that, he is implementing new open-source high-performance software products to facilitate the use of cutting-edge methods for data analysis. “I really like the connection we can build at CIMMYT in terms of practical work for breeders and the development of new statistical methods, models, tools and software we release to attend their requirements, with the main aim of improving precision during the selection of the best genetic materials.”

Led by Juan Burgueño, senior biometrician and head of the Biometrics and Statistics Unit, Toledo is training students, scientists and partners regarding statistical concepts and data analysis. “These trainings courses are a great opportunity to share our work with others and to learn the scientists’ needs in order to improve our capabilities.”

Toledo’s main inspiration to continue his work at CIMMYT is having the opportunity to generate knowledge for others in developing countries. “Our work is driven by the breeders’ needs and that usually helps them to improve their understanding by using what we developed for them and making it a forward-backward relation, which is fascinating.”

Maize farmer Raham Dil stands for a portrait with his push row planter. (Photo: Kashif Syed/CIMMYT)

Precision planters boost maize yields in Pakistan

Written by on . Posted in Features.

A farmer uses a tractor-operated precision maize planter. (Photo: Kashif Syed/CIMMYT)
A farmer uses a tractor-operated precision maize planter. (Photo: Kashif Syed/CIMMYT)

In the northwestern province of Pakistan, near the Afghan border, the International Maize and Wheat Improvement Center (CIMMYT) is helping connect farmers with precision planters to support higher maize yields and incomes. Maize is one of the most important cereals in Pakistan, but in the province of Khyber Pakhtunkhwa yields are significantly lower than the national average. The majority of maize farmers in this province have less than five acres of land and limited access to resources, including high-quality maize seed and mechanization.

Under the Agricultural Innovation Program (AIP) for Pakistan, CIMMYT introduced push row planters in 2016 to help farmers to get a uniform crop stand and save labor costs and time as compared to traditional planting practices. CIMMYT has since then partnered with Greenland Engineering to import tractor-operated precision maize planters. These precision planters allow farmers to plant two rows of maize in one pass and evenly distribute both seeds and fertilizer.

“Optimum planting density in combination with nutrient supply is key to getting the maximum maize yield,” says Muhammad Asim, a senior researcher with the Cereal Crops Research Institute (CCRI). “The precision planter helps farmers achieve this while also getting a uniform crop stand and uniform cobs.”

Maize farmer Jalees Ahmed (right) operates his push row planter. (Photo: Kashif Syed/CIMMYT)
Maize farmer Jalees Ahmed (right) operates his push row planter. (Photo: Kashif Syed/CIMMYT)

Jalees Ahmed, a smallholder maize farmer from the Nowshera district, Khyber Pakhtunkhwa, received a push row planter through CIMMYT’s AIP program. He used to hire six laborers to plant one acre of maize, but with the push row planter, Jalees only needs to hire one laborer and benefits from a more uniform crop.

Raham Dil, another farmer in the Mardan district, recently purchased a push row planter for his farm which he also rents to fellow farmers in the area.

Maize farmer Raham Dil stands for a portrait with his push row planter. (Photo: Kashif Syed/CIMMYT)
Maize farmer Raham Dil stands for a portrait with his push row planter. (Photo: Kashif Syed/CIMMYT)

Both Ahmed and Dil say these planters have made it easier to support their families financially. Interest in precision planters continues to grow.

Last fall, more than 80 farmers attended a field day in the Nowshera district where CIMMYT researchers demonstrated how to use the precision planter to sow maize. CIMMYT’s country representative for Pakistan, Imtiaz Muhammad, highlighted the importance of mechanized maize planting for farmers and CIMMYT’s commitment to improve maize-based system productivity in less developed regions of the country.

Farmers in Nowshera district attend a demonstration on how to use the tractor-operated precision maize planter. (Photo: Kashif Syed/CIMMYT)
Farmers in Nowshera district attend a demonstration on how to use the tractor-operated precision maize planter. (Photo: Kashif Syed/CIMMYT)

The Agricultural Innovation Program for Pakistan is led by CIMMYT and funded by USAID. This project seeks to increase productivity and incomes by testing and promoting modern practices for agriculture’s major sub-sectors in the country. 

CIMMYT scientist Gemma Molero speaks at the 9th International Wheat Congress in Sydney, Australia, in 2015. (Photo: Julie Mollins/CIMMYT)

Meet the role models for the next generation of women and girls in science

Written by Emma Orchardson on . Posted in Features.

CIMMYT scientist Gemma Molero speaks at the 9th International Wheat Congress in Sydney, Australia, in 2015. (Photo: Julie Mollins/CIMMYT)
CIMMYT scientist Gemma Molero speaks at the 9th International Wheat Congress in Sydney, Australia, in 2015. (Photo: Julie Mollins/CIMMYT)

“We need to encourage and support girls and women to achieve their full potential as scientific researchers and innovators,” says UN Secretary General, Antonio Guterres. And he is right. Bridging the gender gap in science is central to achieving sustainable development goals and fulfilling the promises of the 2030 Agenda.

Unfortunately, this is easier said than done. While in recent years the global community has increased its efforts to engage women and girls in science, technology, engineering and mathematics (STEM), they remain staggeringly underrepresented in these fields. According to UNESCO, less than 30 percent of the world’s researchers are women, and only one in three female students in higher education selects STEM subjects.

“Science is male-dominated,” agrees CIMMYT wheat physiologist Gemma Molero. “It’s challenging being a woman and being young — conditions over which we have no control but which can somehow blind peers to our scientific knowledge and capacity.”

Samjhana Khanal surveys heat-tolerant maize varieties in Ludhiana, India, during a field day at the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)
Samjhana Khanal surveys heat-tolerant maize varieties in Ludhiana, India, during a field day at the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)

Investing in the science education for women and girls is a key part of changing this reality. Samjhana Khanal, a Nepali agricultural graduate, social entrepreneur and recipient of a 2018 MAIZE-Asia Youth Innovator Award testifies to this. She cites support from her family as a driving factor in allowing her to pursue her education, particularly her mother, who “despite having no education, not being able to read or write a single word, dreamed of having a scientist daughter.”

Enhancing the visibility of established female scientists who can serve as role models for younger generations is equally important.

“One of the most important factors that register subconsciously when undergraduates consider careers is what the person at the front of the room looks like,” claims the Association for Women in Science, “and women and underrepresented minorities visibly perceive their low numbers in fields like engineering and physical sciences.”

Visiting researcher Fazleen Abdul Fatah is studying the the growing importance of maize and wheat in emerging economies.
Visiting researcher Fazleen Abdul Fatah is studying the the growing importance of maize and wheat in emerging economies.

Fazleen Abdul Fatah is a senior lecturer in agricultural economics, trade and policy at Universiti Teknologi MARA (UITM), Malaysia, who recently spent three months as a visiting researcher based at CIMMYT’s global headquarters in Mexico. She acknowledges the importance of raising the visibility of minority female scientists who can serve as role models for young girls by demonstrating that careers in STEM are attainable.

“I had an amazing professor during my undergraduate degree who really inspired me to move forward in the field,” says Abdul Fatah. “She was a wonderful example of how to do great maths, lead successful national and international projects, work in the STEM field, and be a mom.”

With support from CIMMYT, Molero, Khanal and Abdul Fatah are helping pave the way for the next generation of female scientists. Whether working on crop physiology, nutrient management or food consumption patterns, their careers serve as an inspiration for young and early career researchers around the world.

Read their stories here:

Breaking Ground: Gemma Molero sheds light on wheat photosynthesis

Let’s make hunger history: Samjhana Khanal

Visiting researcher from Malaysia studies growing importance of maize and wheat in the country

Explore CIMMYT’s job openings and training and research opportunities.

Participants of the Tunisia workshop collaborate on a group exercise.

Scaling to new heights in agriculture

Written by Courtney Brantley on . Posted in Features.

How to scale? This question frequently comes up as projects look to expand and replicate results. In order to sustain enduring impacts for projects after their lifetime, agricultural programs are turning to scaling strategies. These strategies look beyond the numbers that are reached within a project and include sustainability and transformation beyond the project context. Methods and tools exist that help anticipate realistic and responsible scaling pathways.

The Scaling team at the International Maize and Wheat Improvement Center (CIMMYT), led by Lennart Woltering, drives the initiative to incorporate scaling principles into existing and developing projects to maximize impact.

Maria Boa recently joined the team as Scaling Coordinator. Last year Boa and Woltering participated in regional meetings on scaling in Morocco, Tunisia and Vietnam, which highlighted the need for better dissemination of information on how to approach scaling, in addition to its benefits.

Participants of the Tunisia workshop collaborate on a group exercise.
Participants of the Tunisia workshop collaborate on a group exercise.

According to Boa, one of the key messages highlighted throughout these events was that in order for scaling to take hold and be integrated into projects, “…there needs to be a shift in mindset to accept that change is complex and that most projects only address a fraction of the problem.” This is essential in using scaling to effectively support long-term results.

At a workshop in Tunisia organized by ICARDA, IFAD and CIMMYT in November 2018, many participants expressed interest in scaling strategy tools, but were puzzled on how to integrate them into their specific projects. Many determined that they were stuck developing scaling strategies in an outdated framework, or one that strictly focused on using technological innovations. One participant admitted that she was skeptical of scaling perspectives because many did not lie in her field of expertise.

The November 2018 CCAFS SEA Conference on Scaling in Vietnam provided a platform for the sharing and learning of experiences in the scaling world. Some of the key messages from the event included the importance of scaling agricultural innovations taking place in complex systems of agricultural transformation, and the necessity of joint cooperation from all involved stakeholders and their openness to taking on challenges as a way to support sustainable system change.

According to Boa, scaling is a process that heavily relies on strategic collaboration for lasting impact. “Projects often don’t take into account how they’re a part of a larger chain of potential change,” she says.

Already recognized as a sustainable leader within scaling, CIMMYT is looking to strengthen scaling efforts in order to foster a more enduring impact within CIMMYT projects and beyond.

Lennart Woltering presents at the CCAFS SEA Conference in Vietnam.
Lennart Woltering presents at the CCAFS SEA Conference in Vietnam.

Currently, the Scaling team at CIMMYT is conducting research on the “science of scaling” as it continues to function as a “help desk,” providing support integrating scaling principles in proposals and projects. Its primary role is to consider a project’s scaling needs and guide the development of an informed strategy to leverage efforts and resources. Boa hopes that by integrating responsible scaling approaches early on, projects can better balance the trade-offs associated with change.

Success in scaling is measured by a project’s enduring impact. However, stakeholders need more experience and capacity to see programs through to their end and be willing to monitor them beyond that lifespan. CIMMYT is developing and collecting the tools to support stakeholders with these specific capacities.

Developing a scaling strategy can also bring additional benefits: a discussion about scaling opens the door for raising awareness and fostering actions among different stakeholders towards system change and sustainable impact.

Researcher Tamaya Peressini performs disease evaluations 10 days post infection at CIMMYT’s glasshouse facilities.

University of Queensland student researches tan spot resistance in wheat at CIMMYT

Written by on . Posted in Features.

This story, part of a series on the international agricultural research projects of recipients of the Crawford Fund’s International Agricultural Student Award, was originally posted on the Crawford Fund blog. 

Researcher Tamaya Peressini performs disease evaluations 10 days post infection at CIMMYT’s glasshouse facilities.
Researcher Tamaya Peressini performs disease evaluations 10 days post infection at CIMMYT’s glasshouse facilities.

In 2018, Tamaya Peressini, from the Queensland Alliance for Agriculture and Food Innovation (QAAFI), a research institute of the University of Queensland (UQ), travelled to CIMMYT in Mexico as part of her Honours thesis research, focused on a disease called tan spot in wheat.

Tan spot is caused by the pathogen Pyrenophora triciti-repentis (Ptr) and her project aimed to evaluate the resistance of tan spot in wheat to global races to this pathogen.

“The germplasm I’m studying for my thesis carries what is known as adult plant resistance (or APR) to tan spot, which has demonstrated to be a durable source of resistance in other wheat pathosystems such as powdery mildew,” Peressini said.

Symptoms of tan spot on wheat plants.
Symptoms of tan spot on wheat plants.

Tan spot is prevalent worldwide, and in Australia causes the most yield loss out of the foliar wheat diseases. In Australia, there is only one identified pathogen race that is prevalent, called Ptr Race 1. For Ptr Race 1, the susceptibility gene Tsn1 in wheat is the main factor that results in successful infection in Ptr strains that carry Toxin A. However, globally it is a more difficult problem, as there are seven other pathogen races that consist of different combinations of necrotrophic toxins. Hence, developing cultivars that are multi-race resistant to Ptr presents a significant challenge to breeders, as multiple resistant genes would be required for resistance to other pathogens.

“At CIMMYT, I evaluated the durability of APR I identified in plant material in Australia by inoculating with a local strain of Ptr and also with a pathogen that shares ToxA: Staganospora nodorum,” Peressini explained.

“The benefit of studying this at CIMMYT was that I had access to different strains of the pathogen which carry different virulence factors of disease, I was exposed to international agricultural research and, importantly, I was able to create research collaborations that would allow the APR detected in this population to have the potential to reach developing countries to assist in developing durably resistant wheat cultivars for worldwide deployment.”

Recent work in Dr Lee Hickey’s laboratory in Queensland has identified several landraces from the Vavilov wheat collection that exhibited a novel resistance to tan spot known as adult plant resistance (APR). APR has proven to be a durable and broad-spectrum source of resistance in wheat crops, namely with the Lr34 gene which confers resistance to powdery mildew and leaf stem rust of wheat.

“My research is focused on evaluating this type of resistance and identifying whether it is resistant to multiple pathogen species and other races of Ptr. This is important to the Queensland region, as the northern wheat belt is significantly affected by tan spot disease. Introducing durable resistance genes to varieties in this region would be an effective pre-breeding strategy because it would help develop crop varieties that would have enhanced resistance to tan spot should more strains reach Australia. Furthermore, it may provide durable resistance to other necrotrophic pathogens of wheat,” Peressini said.

The plant material Peressini studied in her honors thesis was a recombinant inbred line (RIL) population, with the parental lines being the APR landrace — carries Tsn1 — and the susceptible Australian cultivar Banks — also carries Tsn1. To evaluate the durability of resistance in this population to other strains of Ptr, this material along with the parental lines of the population and additional land races from the Vavilov wheat collection were sent to CIMMYT for Tamaya to perform a disease assay.

“At CIMMYT I evaluated the durability of APR identified in plant material in Australia by inoculating with a local strain of Ptr and also with a pathogen that shares ToxA: Staganospora nodorum. After infection, my plant material was kept in 100 per cent humidity for 24 hours (12 hours light and 12 hours dark) and then transferred back to regular glasshouse conditions. At 10 days post infection I evaluated the resistance in the plant material.”

From the evaluation, the APR RIL line demonstrated significant resistance compared to the rest of the Australian plant material against both pathogens. The results are highly promising, as they demonstrate the durability of the APR for both pre-breeding and multi-pathogen resistance breeding. Furthermore, this plant material is now available for experimental purposes at CIMMYT, where further trials can validate how durable the resistance is to other necrotrophic pathogens and also be deployed worldwide and be tested against even more strains of Ptr.

“During my visit at CIMMYT I was able to immerse myself in the Spanish language and take part in professional seminars, tours, lab work and field work around the site. A highlight for me was learning to prepare and perform toxin infiltrations for an experiment comparing the virulence of different strains of spot blotch,” Peressini said.

Peressini had a chance to visit the pyramids of Teotihuacán and other Mexican landmarks.
During her stay in Mexico, Peressini had a chance to visit the pyramids of Teotihuacán and other cultural landmarks.

“I also formed valuable friendships and research partnerships from every corner of the globe and had valuable exposure to the important research underway at CIMMT and insight to the issues that are affecting maize and wheat growers globally. Of course, there was also the chance to travel on weekends, where I was able to experience the lively Mexican culture and historical sites – another fantastic highlight to the trip!”

“I would like to thank CIMMYT and Dr Pawan Singh for hosting me and giving the opportunity to learn, grow and experience the fantastic research that is performed at CIMMYT and opportunities to experience parts of Mexico. The researchers and lab technicians were all so friendly and accommodating. I would also like to thank my supervisor Dr Lee Hickey for introducing this project collaboration with CIMMYT. Lastly, I would like to thank the Crawford Fund Queensland Committee for funding this visit; not only was I able to immerse myself in world class plant pathology research, I have been given valuable exposure to international agricultural research that will give my research career a boost in the right direction,” Peressini concluded.

Breaking Ground: Breeder Marcela C. Andrade bolsters maize with hardiness from ancestral races

Written by Mike Listman on . Posted in Features.

Postcard_Marcela CarvalhoAs the world heats up and water grows scarce, threatening the productivity of humankind’s preferred crops, breeder Marcela Carvalho Andrade and her colleagues at the International Maize and Wheat Improvement Center (CIMMYT) are working to toughen maize, drawing resilience traits from landraces, the forerunners of modern maize.

For decades, scientists have sought to utilize the hardiness of maize landraces, which evolved over millennia of farmer selection for adaptation to diverse and sometimes harsh local settings in Mexico, Central and South America.

But crossing elite varieties with landraces brings along wild traits that are difficult and costly to purge, including lower grain yields, excessive tallness or a tendency to fall over in strong winds. For this and for their genetic complexity, landraces are seldom used directly in breeding programs, according to Andrade.

Crosses that home in on genetically complex traits

“Our strategy is to cross selected landraces with elite maize lines, thus developing improved lines that can be directly incorporated and recycled in breeding programs,” explained Andrade, who joined CIMMYT in 2016.

The traits sought include better resilience under high temperatures, drought conditions or the attacks of rapidly-evolving crop diseases. “All these features will be critical for the future productivity of maize,” said Andrade.

One of the world’s three most important crops, maize contributes over 20% of the calories in human diets in 21 low-income countries, as well as being used in industry, biofuels, and feed for livestock and poultry.

Andrade and the maize breeding team develop new lines that carry a 75 percent genetic contribution from the elite source and 25 percent from a landrace. The aim she said is to get the good components from both sides, while broadening maize’s genetic diversity for use by breeders and ultimately farmers.

The resulting lines and hybrids are tested for yield, resilience and overall agronomic performance, under both normal growing conditions and “stressed” environments; for example, in plots grown at sites with high temperatures or reduced water availability.

“We can thus identify landraces that offer traits of interest, as well as generating improved breeding lines to strengthen the resilience of elite maize without reducing its yield,” said Andrade, noting that the research employs conventional cross-pollination and selection.

According to Andrade, CIMMYT has carried out large-scale molecular analysis of its maize seed collections, which number around 28,000 and comprise landraces from 70 countries.

“Over the past years, CIMMYT has used genetic diversity analyses of its maize collections to select landraces for use in drought tolerance breeding or for finding lines that are resistant to newly important diseases such as  Maize Lethal Necrosis or Tar Spot,” she explained. “Genetic diversity analysis allows us to narrow the number of candidate landrace sources that we need to cross and assess in the field.”

The viral disease Maize Lethal Necrosis (MLN) has devastated crops in eastern Africa since its appearance there in 2011.

The researchers have also found landrace sources of resilience against Tar Spot Complex, a maize disease of the Americas that can cause 50 percent or greater yield losses in infected crops.

Benefiting breeding and farmers

Andrade said the breeding team expects to release a first wave of landrace-derived, improved maize lines in 2019, some featuring enhanced drought tolerance and others that provide better resistance to Tar Spot.

“The lines we offer will be freely available to breeders worldwide and must yield well and show superior resilience,” Andrade explained. “They will have reasonable agronomics—ear and plant height and standability, for example. The lines will not be perfect, but breeders won’t hesitate to use them because we’ve ensured that they are superior for at least one crucial trait and reasonably competitive for most other traits.”

From Brazil to the world

Growing up in a small town and having direct contact with her father’s dairy farm in Minas Gerais, a mainly rural state in Brazil, Andrade finds her CIMMYT work enormously satisfying. “My dad and a few uncles were farmers and complained some years that their crops didn’t yield well,” she says. “I knew I wanted to help them somehow.”

Andrade obtained Bachelor and Master’s degrees in agronomy/plant science from the Universidade Federal de Lavras (UFLA), one of Brazil’s premier institutions of higher education. She later completed a Doctorate in Genetics and Plant Breeding at UFLA, in partnership with Ohio State University.

She credits CIMMYT maize scientist Terry Molnar, her supervisor and mentor, with teaching her the complex ins and outs of maize breeding. “I am a plant breeder and worked previously with vegetables, but I learned the practical aspects of maize breeding from Terry.”

Looking ahead, Andrade sees herself continuing as a plant breeder. “I don’t see myself working in anything else. I would eventually like to lead my own program but, at this point in my career, I’m happy to help transfer landrace traits to modern maize varieties.”

The itsy bitsy spider can make a big impact in agriculture

Written by on . Posted in Features.

Face of an adult male Phidippus audax male jumping spider. (Photo: Opoterser/Wikimedia Commons)
Face of an adult male Phidippus audax male jumping spider. (Photo: Opoterser/Wikimedia Commons)

A new study explores how conservation agriculture in southern Africa supports spider populations and diversity in fields, which could help mitigate pest damage and potentially lead to higher yields for farmers. According to the Food and Agriculture Organization of the United Nations (FAO), herbivorous insects such as aphids, caterpillars and weevils destroy about one fifth of the world’s total crop production each year. Spiders can help keep voracious pests in-check, but conventional farming practices (e.g. tilling, crop residue removal and monoculture) can harm or drastically reduce these beneficial bio-control agents.

There are more than 45,000 identified spider species around the world. From glaciers to tropical rainforests, they inhabit every terrestrial ecosystem on earth. Some can even live in tidal zones, and at least one species inhabits fresh water. While we tend to associate spiders with webs, only about 50 percent of the species catch their prey this way; the rest hunt on plants, on the ground or below it, using a variety of tactics such as stalking, stabbing, crushing – even seduction.

Although spiders have been around for 300 million years, some species are at risk of extinction due to habitat loss and fragmentation. Drastic reductions in vegetation – whether from a new parking lot or a tilled field – removes the food source that attracts their prey. Bare ground exposes their nesting sites and themselves, which makes it harder to hunt and easier to be hunted by birds and small mammals.

At the Chinhoyi University of Technology experimental farm in Zimbabwe, a team of researchers aimed to determine the response of spiders under different agricultural practices. Conventional farmers often prepare their fields for planting by physically breaking up and inverting the top 6-10 inches of soil. This practice of ploughing prepares a fine soil tilth, which makes it easier to plant; it breaks up and buries weeds, and reduces soil compaction to aerate the soil. But tilling also increases topsoil erosion from wind and water. It accelerates soil carbon decomposition, reduces soil water infiltration and disrupts microorganisms living in the soil, including beneficial insects and spiders.

The researchers conducted two experiments over the 2013/2014 and 2014/2015 cropping seasons to see how tilling, crop residue retention (i.e. leaving stalks and post-harvest organic matter in the field), fertilizer application and weeding affected ground- and plant-wandering spider species. They hypothesized that spider abundance and diversity would increase with lower levels of soil disturbance and more plant cover.

The results showed direct seeding into no-till soil increased the abundance of spiders and the diversity of species. Mulching also showed a positive effect. Contrary to their hypotheses and results from temperate regions, the application of fertilizer and intense weeding did not affect the spider community. The researchers attributed this to the difference in climatic conditions (tropical vs. temperate) of this study in southern Africa.

“Often the government’s and farmer’s immediate reaction to a crop pest issue is to apply a pesticide, but we can make use of biological control agents, which may be cheaper and less damaging for the environment,” says Christian Thierfelder, a co-author of the study. Thierfelder is a cropping systems agronomist and conservation agriculture specialist with the International Maize and Wheat Improvement Center (CIMMYT) with long-term experience in sustainable intensification.

“Spiders, ants and beetles all do a really good job with little or no cost to the farmer,” he adds. “For us, it’s quite fascinating to see simple agronomic practices to affect and control crop pests. This also provides new avenues of dealing with the fall armyworm, an invasive species which has devastated crops across the majority of sub-Saharan Africa countries.”

A robust number of studies from Europe, Australia and North America have shown the link between conservation agriculture and biodiversity, but Thierfelder says that research on biodiversity in agronomic systems is relatively new in southern Africa. While the study in Zimbabwe helps fill this gap, more research is needed to show the connection between the abundance of spiders, beetles and ants with the suppression of insect pest activity.

For more information, read Spider community shift in response to farming practices in a sub-humid agroecosystem in southern Africa.

This research was jointly funded by Chinhoyi University of Technology (CUT) and the German Academic Exchange Program (DAAD). The CGIAR Research Program on Maize (MAIZE) supported this study through Christian Thierfelder’s contributions.

Farmer Gudeye Leta harvests his local variety maize in Dalecho village, Gudeya Bila district, Ethiopia. (Photo: Peter Lowe/CIMMYT)

Reducing high yield gaps with decision-support apps

Written by Emma Orchardson on . Posted in Features.

Farmer Gudeye Leta harvests his local variety maize in Dalecho village, Gudeya Bila district, Ethiopia. (Photo: Peter Lowe/CIMMYT)
Farmer Gudeye Leta harvests his local variety maize in Dalecho village, Gudeya Bila district, Ethiopia. (Photo: Peter Lowe/CIMMYT)

Ethiopia is Africa’s third largest producer of maize, after Nigeria and South Africa. Although the country produces around 6.5 million tons annually, the national average maize yield is relatively low at 3.5 tons compared to the attainable yield of 8.5 tons. This high yield gap — the difference between attainable and actual yields — can be attributed to a number of factors, including crop varieties used, farm management practices, and plant density.

The Taking Maize Agronomy to Scale (TAMASA) project aims to narrow maize yield gaps in Ethiopia, Nigeria and Tanzania through the development and scaling out of decision-support tools, which provide site-specific recommendations based on information held in crop and soil databases collected from each country. These help farmers to make decisions based on more accurate variety and fertilizer recommendations, and can contribute to improving maize production and productivity.

One such tool is Nutrient Expert, a free, interactive computer-based application. It can rapidly provide nutrient recommendations for individual farmers’ fields in the absence of soil-testing data. The tool was developed by the International Plant Nutrition Institute in collaboration with the International Maize and Wheat Improvement Center (CIMMYT), the International Institute of Tropical Agriculture (IITA), and research and extension service providers.

Nutrient Expert user interface.
Nutrient Expert user interface.

In Ethiopia, regional fertilizer recommendations are widely used, but soil fertility management practices can vary greatly from village to village and even between individual farmers. This can make it difficult for farmers or extension agents to receive accurate information tailored specifically to their needs. Nutrient Expert fills this gap by incorporating information on available fertilizer blends and giving customized recommendations for individual fields or larger areas, using information on current farmer practices, field history and local conditions. It can also provide advice on improved crop management practices such as planting density and weeding, thereby helping farmers to maximize net returns on their investment in fertilizer.

Data calibration was based on the results of 700 multi-location nutrient omission trials conducted in major maize production areas in Ethiopia, Nigeria and Tanzania. These trials were designed as a diagnostic tool to establish which macro-nutrients are limiting maize growth and yield, and determine other possible constraints.

In Ethiopia, CIMMYT scientists working for the TAMASA project conducted nutrient omission trials on 88 farmer fields in Jimma, Bako and the Central Rift Valley in 2015 to produce a version of Nutrient Expert suitable for the country. Researchers trialed the app on six maize-belt districts in Oromia the following year, in which Nutrient Expert recommendations were compared with soil-test based and regional ones.

Researchers found that though the app recommended lower amounts of phosphorus and potassium fertilizer, overall maize yields were comparable to those in other test sites. In Ethiopia, this reduction in the use of NPK fertilizer resulted in an investment saving of roughly 80 dollars per hectare.

Results from Nutrient Expert trials in Ethiopia, Nigeria and Tanzania showed improved yields, fertilizer-use efficiency and increased profits, and the app has since been successfully adapted for use in developing fertilizer recommendations that address a wide variety of soil and climatic conditions in each of the target countries.

The World Bank’s 2016 Digital Dividends report states that we are currently “in the midst of the greatest information and communications revolution in human history.” This shifting digital landscape has significant implications for the ways in which stakeholders in the agricultural sector generate, access and use data. Amidst Africa’s burgeoning technology scene, CIMMYT’s TAMASA project demonstrates the transformative power of harnessing ICTs for agricultural development.

Learn more about different versions of Nutrient Expert and download the free software here.

TAMASA is a five-year project (2014-2019) funded by the Bill & Melinda Gates Foundation, seeking to improve productivity and profitability for small-scale maize farmers in Ethiopia, Nigeria and Tanzania. Read more about the project here.

Blue maize tortillas. (Photo: Luis Figueroa)

Best of 2018: Editors’ picks

Written by Rodrigo Ordóñez on . Posted in Features.

In 2018, our editors continued to cover exciting news and events related to maize and wheat science around the world. Altogether, we published more than 200 stories.

It is impossible to capture all of the places and topics we reported on, but here are some highlights and our favorite stories of the year.

Thank you for being a loyal reader of CIMMYT’s news and features. We are already working on new stories and platforms for 2019. Stay tuned!

New technical guide to help farmers protect against fall armyworm

In response to the spread of the fall armyworm across Africa, CIMMYT and its partners published a technical guide for integrated pest management. Produced by international experts, it offers details on the best management practices to help smallholder farmers effectively and safely control the pest while simultaneously protecting people, animals and the environment.

The voracious fall armyworm was on the news again in July, as its presence was reported in India, giving this issue a global scale.

CIMMYT and IITA are co-leading the new Fall Armyworm R4D International Consortium, composed of 40 partners, which held an international conference in Ethiopia in October.

Foliar damaged by full-grown fall armyworm larva in Zimbabwe. (Photo: Christian Thierfelder/CIMMYT)
Foliar damaged by full-grown fall armyworm larva in Zimbabwe. (Photo: Christian Thierfelder/CIMMYT)

Cobs & Spikes podcast: Blue maize opportunities for Mexican farmers

This year we launched our new podcast, Cobs & Spikes, where you can listen to stories from the field, interviews and explainers.

The most popular episode so far was about blue maize, a distinctive feature of Mexico’s food culture. Valued for its rich flavor and texture, it is also catching the attention of some food processing companies and high-end culinary markets. CIMMYT researchers are helping Mexican farmers tap into two emerging markets that could boost incomes while conserving culture and biodiversity.

Blue maize tortillas. (Photo: Luis Figueroa)
Blue maize tortillas. (Photo: Luis Figueroa)

Scientists confirm value of whole grains and wheat for nutrition and health

A review of scientific studies on cereal grains and health showed that gluten- or wheat-free diets are not inherently healthier for the general populace and may actually put individuals at risk of dietary deficiencies.

Based on a compilation of 12 reports, eating whole grains is actually beneficial for brain health and associated with reduced risk of diverse types of cancer, coronary disease, diabetes, hypertension, obesity and overall mortality.

Whole wheat bread. (Photo: Rebecca Siegel/Flickr)
Whole wheat bread. (Photo: Rebecca Siegel/Flickr)

African youth find entrepreneurial opportunity in agricultural mechanization

Mechanized agricultural services have traditionally only been used by large-scale farmers who could afford them, but small and medium-sized machines are fast becoming affordable options for family farmers through the advent of service providers. An increasing number of young people across eastern and southern Africa are creating a stable living as entrepreneurs, providing agricultural mechanization services.

CIMMYT is offering training courses to promote mechanization in Ethiopia, Kenya, Tanzania and Zimbabwe. Trainings equip entrepreneurs with essential business skills and knowledge, tailored to rural environments, so they can support farmers with appropriate mechanization services that sustainably intensify their production.

After receiving training from CIMMYT, this group of young men started a small business offering mechanized agricultural services to smallholder farmers near their town in rural Zimbabwe. (Photo: Matthew O’Leary/CIMMYT)
After receiving training from CIMMYT, this group of young men started a small business offering mechanized agricultural services to smallholder farmers near their town in rural Zimbabwe. (Photo: Matthew O’Leary/CIMMYT)

New wheat gene map will speed breeding and help secure grain supplies

In a scientific breakthrough, the International Wheat Genome Sequencing Consortium presented an annotated reference genome with a detailed analysis of gene content among subgenomes and the structural organization for all the chromosomes. The research was published on Science.

A BBC news report on this discovery mentioned CIMMYT as a leader in wheat research to help feed the world’s rapidly expanding population.

Improved wheat growing in Pakistan. (Photo: A. Yaqub/CIMMYT)
Improved wheat growing in Pakistan. (Photo: A. Yaqub/CIMMYT)

Better together: Partnership around zinc maize improves nutrition in Guatemala

Over 46 percent of children under five in Guatemala suffer from chronic malnutrition. More than 40 percent of Guatemala’s rural population is deficient in zinc, an essential micronutrient that plays a crucial role in pre-natal and post-natal development and is key to maintaining a healthy immune system.

CIMMYT is working with partners HarvestPlus and Semilla Nueva to reduce malnutrition and zinc deficiency in the country, through the development and deployment of Guatemala’s first biofortified zinc-enriched maize.

Last year we also reported on the release of a new zinc-enriched maize variety in Colombia and how vitamin A orange maize is improving nutrition in Zimbabwe.

Rómulo González’s daughter holds a corncob. (Photo: Sarah Caroline Mueller)
Rómulo González’s daughter holds a corncob. (Photo: Sarah Caroline Mueller)

Innovation, partnerships and knowledge for African farmers meet at AGRF 2018

CIMMYT was present at the African Green Revolution Forum in Kigali, Rwanda. Leaders discussed practical ways to transform policy declarations into impact on the ground, at a time when farmers are facing the challenge of climate change and the threat of emerging pests and diseases.

On the occasion of this event, CIMMYT’s Director General, Martin Kropff, and the Regional Representative for Africa, Stephen Mugo, authored an op-ed on agricultural innovation in Africa, published by Thomson Reuters (in English) and Jeune Afrique (in French).

The director general of CIMMYT, Martin Kropff, was the keynote speaker of the AGRF 2018 round-table discussion "Quality Means Quantity – Seed Processing Technology and Production Approaches for Agricultural Benefit." (Photo: CIMMYT)
The director general of CIMMYT, Martin Kropff, was the keynote speaker of the AGRF 2018 round-table discussion “Quality Means Quantity – Seed Processing Technology and Production Approaches for Agricultural Benefit.” (Photo: CIMMYT)

International experts discuss progress and challenges of maize research and development in Asia

More than 280 delegates from 20 countries gathered in Ludhiana, in the Indian state of Punjab, for the 13th Asian Maize Conference and Expert Consultation on Maize for Food, Feed, Nutrition and Environmental Security.

Technical sessions and panel discussions covered topics such as novel tools and strategies for increasing genetic gains, stress-resilient maize, sustainable intensification of maize-based cropping systems, specialty maize, processing and value addition, and nutritionally enriched maize for Asia.

Four young people were distinguished in the first edition of the 2018 MAIZE-Asia Youth Innovators Award. One of them wrote a blog about her personal story and her commitment to make hunger history.

Conference participants pose for a group photo at the field visit site during the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)
Conference participants pose for a group photo at the field visit site during the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)

Researchers find “hotspot” regions in the wheat genome for high zinc content, new study shows

An international team of scientists applied genome-wide association analysis for the first time to study the genetics that underlie grain zinc concentrations in wheat.

Analyzing zinc concentrations in the grain of 330 bread wheat lines across diverse environments in India and Mexico, the researchers uncovered 39 new molecular markers associated with the trait, as well as two wheat genome segments that carry important genes for zinc uptake, translocation, and storage in wheat.

Around the same time, a study confirmed the nutritional and health benefits of zinc-biofortified wheat in India. It showed that when vulnerable young children in India consume foods with wheat-enriched zinc, the number of days they spend sick with pneumonia and vomiting significantly diminishes.

The reported work by wheat scientists paves the way for expanded use of wild grass species, such as Aegilops tauschii (also known as goat grass; pictured here) as sources of new genes for higher grain zinc in wheat. (Photo: Rocio Quiroz/CIMMYT)
The reported work by wheat scientists paves the way for expanded use of wild grass species, such as Aegilops tauschii (also known as goat grass; pictured here) as sources of new genes for higher grain zinc in wheat. (Photo: Rocio Quiroz/CIMMYT)

Study in Ethiopia links healthy soils to more nutritious cereals

A study in Ethiopia found that wheat grown in areas closer to the forest had more nutrients, like zinc and protein. Soils in these areas are rich in organic matter — about 1% higher — due to decomposing trees and plants, as well as manure of livestock grazed in the forest.

Increasing organic matter by 1 percent was associated with an increase in zinc equivalent to meet the daily needs of 0.2 additional people per hectare and an increase in protein equivalent to meeting the daily needs of 0.1 additional people per hectare. These modest increases in soil organic matter contribute a small, but important, increase in nutrients found in wheat.

Although these nutrient increases are not enough to address hidden hunger on their own, they reveal how healthy soils are an additional tool — alongside diet diversity and the biofortification of food — to fight malnutrition.

Annual report 2017

In 2018 we published our latest annual report, highlighting CIMMYT’s global work and collaboration with partners. It features infographics and case studies from Bangladesh, Ethiopia, Haiti, Mexico and Pakistan.

It is a good way to understand how CIMMYT’s science improves livelihoods around the world.

You can read the web version or the PDF of the report, or watch the video summary below.

Bangladesh farmer Raju Sarder sits on his recently acquired reaper. (Photo: CIMMYT/Md. Ikram Hossain)

The saving grace of a hefty investment

Written by on . Posted in Features.

Bangladesh farmer Raju Sarder sits on his recently acquired reaper. (Photo: CIMMYT/Md. Ikram Hossain)
Bangladesh farmer Raju Sarder sits on his recently acquired reaper. (Photo: iDE/Md. Ikram Hossain)

A man in his early 20s walked the winding roads of Sajiara village, Dumuria upazila, Khulna District in Bangladesh. His head hanging low, he noticed darkness slowly descending and then looked up to see an old farmer wrapping up his own daily activities. With traditional tools in hand, the farmer looked exhausted. The young man, Raju Sarder, considered that there had to be a better way to farm to alleviate his drudgery and that of others in the community.

Determined to act, Raju set out to meet Department of Agricultural Extension (DAE) officials the very next day. They informed him about the Mechanization and Irrigation project of the Cereal Systems Initiative for South Asia (CSISA MI). They also introduced him to the project’s most popular technologies, namely the power tiller operated seeder, reaper and axial flow pumps, all of which reduce labor costs and increase farming efficiency.

Raju found the reaper to be the most interesting and relevant for his work, and contacted a CSISA representative to acquire one.

The first challenge he encountered was the cost — the equivalent of $1,970 — which as a small-scale farmer he could not afford. CSISA MI field staff assured him that his ambitions were not nipped in the bud and guided him in obtaining a government subsidy and a loan of $1,070 from TMSS, one of CSISA MI’s micro financing partners. Following operator and maintenance training from CSISA MI, Raju began providing reaping services to local smallholder rice and wheat farmers.

He noticed immediately that he did not have to exert himself as much as before but actually gained time for leisure and his production costs dwindled. Most remarkably, for reaping 24 hectares Raju generated a profit of $1,806; a staggering 15 times greater than what he could obtain using traditional, manual methods and enough to pay back his loan in the first season.

“There was a time when I was unsure whether I would be able to afford my next meal,” said Raju, “but it’s all different now because profits are pouring in thanks to the reaper.”

As a result of the project and farmers’ interest, field labor in Raju’s community is also being transformed. Gone are the days when farmers toiled from dawn to dusk bending and squatting to cut the rice and wheat with rustic sickles. Laborious traditional methods are being replaced by modern and effective mechanization. Through projects such as CSISA MI, CIMMYT is helping farmers like Raju to become young entrepreneurs with a bright future. Once poor laborers disaffected and treated badly in their own society, these youths now walk with dignity and pride as significant contributors to local economic development.

CSISA MI is a partnership involving the International Maize and Wheat Improvement Center (CIMMYT) and iDE, a non-governmental organization that fosters farmers’ entrepreneurial development, with funding from USAID under the Feed the Future initiative.

Conference participants pose for a group photo at the field visit site during the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)

International experts discuss progress and challenges of maize research and development in Asia

Written by Jennifer Johnson on . Posted in Features.

The importance of maize in Asian cropping systems has grown rapidly in recent years, with several countries registering impressive growth rates in maize production and productivity. However, increasing and competing demands — food, feed, and industry — highlight the continued need to invest in maize research for development in the region. Maize experts from around the world gathered to discuss these challenges and how to solve them at the 13th Asian Maize Conference and Expert Consultation on Maize for Food, Feed, Nutrition and Environmental Security, held from October 8 to 10, 2018, in Ludhiana, Punjab, India.

More than 280 delegates from 20 countries attended the conference. Technical sessions and panel discussions covered diverse topics such as novel tools and strategies for increasing genetic gains, stress-resilient maize, sustainable intensification of maize-based cropping systems, specialty maize, processing and value addition, and nutritionally enriched maize for Asia.

The international conference was jointly organized by the Indian Council of Agricultural Research (ICAR), the International Maize and Wheat Improvement Center (CIMMYT), the Indian Institute of Maize Research (ICAR-IIMR), Punjab Agricultural University (PAU), the CGIAR Research Program on Maize (MAIZE), and the Borlaug Institute for South Asia (BISA).

In Asia, maize is rapidly growing in its importance, due to high demand. Maize productivity in the region is growing by 5.2 percent annually compared to a global average of 3.5 percent. However, this is not enough. “Asia produces nearly 80 million tons of maize annually, but demand will be double by the year 2050,” said Martin Kropff, CIMMYT director general, in his opening address at the conference. “We need to produce two times more maize in Asia, using two times less inputs, including water and nutrients. Climatic extremes and variability, especially in South and South East Asia, will make this challenge more difficult. Continued funding for maize research is crucial. We need to work together to ensure that appropriate innovations reach the smallholder farmers.”

Field visit in Ludhiana, India, during the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)
Field visit in Ludhiana, India, during the 13th Asian Maize Conference. (Photo: Manjit Singh/Punjab Agricultural University)

Climate-resilient maize and sustainable intensification

A major theme emphasized at the conference was climate resilience in maize-based systems. South Asia is a hotspot for vulnerability due to climate change and climate variability, which poses great risks to smallholder farmers. “Climate resilience cannot be brought by only a single technology — it has to be through a judicious mix of several approaches,” said B.M. Prasanna, director of CIMMYT’s Global Maize Program and the CGIAR Research Program on Maize.

Great advances have been made in developing climate-resilient maize for Asia since the last Asian Maize Conference, held in 2014. Many new heat- and drought-tolerant maize varieties have been developed through various projects, such as the Heat Stress Tolerant Maize for Asia (HTMA), and Affordable, Accessible, Asian (AAA) maize projects. Through the HTMA project, over 50 CIMMYT-derived elite heat-tolerant maize hybrids have been licensed to public and private sector partners in Asia during the last three years, and nine heat-tolerant maize hybrids have been released so far in Bangladesh, India and Nepal.

Sustainable intensification of maize-based farming systems has also helped farmers to increase yields while reducing environmental impact, through conservation agriculture and scale-appropriate mechanization. Simple technologies are now available to reduce harvest time by up to 80 percent and hired labor costs by up to 60 percent. Researchers across the region are also working to strengthen the maize value chains.

B.S. Dhillon (center) receives the MAIZE Champion Award for his pioneering work in maize breeding. (Photo: Manjit Singh/Punjab Agricultural University)
B.S. Dhillon (center) receives the MAIZE Champion Award for his pioneering work in maize breeding. (Photo: Manjit Singh/Punjab Agricultural University)

Science and appropriate technologies

CIMMYT has been focusing on developing and deploying new technologies that can enhance the efficiency of maize breeding programs; these include doubled haploid (DH) technology, high-throughput field-based phenotyping, and genomics-assisted breeding. The conference emphasized on the need for Asian institutions to adapt such new tools and technologies in maize breeding programs.

Another topic of interest was the fall armyworm, an invasive insect pest that has spread through 44 countries in Africa and was recently reported in India for the first time. “This pest can migrate very quickly and doesn’t require visas and passports like we do. It will travel, and Asian nations need to be prepared,” Prasanna said. “However, there is no need for alarm. We will be looking at lessons learned from other regions and will work together to control this pest.”

In addition to grain for food and feed, specialty maize varieties can provide beneficial economic alternatives for smallholder maize farmers. Conference participants had the opportunity to hear from Indian farmers Kanwal Singh Chauhan and Yugandar Y, who have effectively adopted specialty maize varieties, such as baby corn, sweet corn and popcorn, into life-changing economic opportunities for farming communities. They hope to inspire other farmers in the region to do the same.

On October 10, conference delegates participated in a maize field day organized at the BISA farm in Ladhowal, Ludhiana. Nearly 100 improved maize varieties developed by CIMMYT, ICAR and public and private sector partners were on display, in addition to scale-appropriate mechanization options, decision support tools, and precision nutrient and water management techniques.

The conference concluded with a ceremony honoring the winners of the 2018 MAIZE-Asia Youth Innovators Award. The awards were launched in collaboration between the CGIAR Research Program on Maize and YPARD (Young Professionals for Agricultural Development) to recognize the contributions of innovative young women and men who can inspire fellow youth to get involved in improving maize-based agri-food systems in Asia. Winners of the first edition of the awards include Dinesh Panday of Nepal, Jie Xu of China, Samjhana Khanal of Nepal, and Vignesh Muthusamy of India.

Participants listen to a briefing during the field visit of the 13th Asian Maize Conference, in Ludhiana, India. (Photo: Manjit Singh/Punjab Agricultural University)
Participants listen to a briefing during the field visit of the 13th Asian Maize Conference, in Ludhiana, India. (Photo: Manjit Singh/Punjab Agricultural University)

With multi-sector support for climate-sensitive practices, African farmers can boost food security and resilience

Written by Matthew O'Leary on . Posted in Features.

Support for smallholder farmers to trial and select sustainable practices suited to their varying conditions is essential to build resilient farms needed to feed Africa’s soaring population, said economist Paswel Marenya at the Second African Congress on Conservation Agriculture in Johannesburg this October.

Farmers face different agroecological, socioeconomic and institutional environments across Africa. The mounting challenges brought by climate change also vary from place to place. Family farmers are born innovators, with government and industry support they can develop a resilient farming system that works for them, said the researcher from the International Maize and Wheat Improvement Center (CIMMYT).

One of the emerging paradigms of sustainable agriculture resilient to climatic changes is conservation agriculture — defined by minimal soil disturbance, crop residue retention and diversification through crop rotation. Although not a one-size-fits-all approach, it is a promising framework to be applied and adapted to meet farmers’ unique contexts, he said.

“Conservation agriculture’s potential to conserve soils, improve yields and limit environmental impacts makes it one of the elements that should be given prominence in efforts to secure sustainable and resilient farming in Africa,” he told audiences at the conference dedicated to discuss conservation agriculture systems as the sustainable basis for regional food security.

Along with eleven other researchers, Marenya presented evidence gathered over eight years researching the development of locally-adapted conservation agriculture-based practices as part of the Sustainable Intensification of Maize and Legume Systems for Food Security in Eastern and Southern Africa (SIMLESA).

“Research shows that with a network of appropriate support, farmers can access the tools and knowledge to experiment, learn, adapt and adopt these important principles of conservation agriculture,” he said.

“Their farming can thus evolve to practices that have low environmental impacts, diversify their cropping including intercropping maize with legumes, and test affordable machinery for efficient, timely and labor-saving operations. In the end, each farmer and farming community have the ability to tailor a conservation agriculture-based system based on what works best given their unique socioeconomic settings,” said Marenya.

Trialing sustainable practices leads to adoption

Through the project over 235,000 farming households in the region have trialed sustainable practices reporting positive results of improved soil fertility, reduced labor costs, and increased food production and maize yields despite erratic weather, said collaborating investigator Custudio George from the Mozambique Institute of Agricultural Research.

“The majority of these farmers have gone on to adopt their preferred practices throughout their whole farm and now actively promote conservation agriculture to other farmers,” he added

Women undertake the majority of agricultural activities in sub-Saharan Africa. When they are empowered to try sustainable practices they overwhelmingly adopt those technologies identifying them as an economically viable way to overcome challenges and increase household food security, said Maria da Luz Quinhentos, who is an agronomist with the Mozambique Institute of Agricultural Research.

Maria da Luz Quinhentos, from the Mozambique Institute of Agricultural Research (IIAM).
Maria da Luz Quinhentos, from the Mozambique Institute of Agricultural Research (IIAM).

Forming networks to support farmer resilience

The research project took a multidisciplinary approach bringing together sociologists, economists, agronomists and breeders to study how maize-legume conservation agriculture-based farming can best benefit farmers in seven countries; including Ethiopia, Kenya, Malawi, Mozambique, Tanzania and Uganda.

In this vein, the project sought to connect farmers with multi-sector actors across the maize-legume value chain through Innovation platforms. Innovation Platforms, facilitated by SIMLESA, are multi-stakeholder forums connecting farmer groups, agribusiness, government extension, policy makers and researchers with the common goal to increase farm-level food security, productivity and incomes through the promotion of maize-legume intercropping systems.

“Having a network of stakeholders allows farmers to test and adopt conservation agriculture-based techniques without the risk they would have if they tried and failed alone,” said Michael Misiko who studies farmer adoption as part of SIMLESA.

“Farmers form groups to work with governments to gain access to improved seed, learn new farming practices and connect with local agribusinesses to develop markets for their produce,”

“When new problems arise stakeholders in local and regional innovation platforms can diagnose barriers and together identify mutual solutions,” he said.

Researchers and governments learn from innovation platforms and can use results to recommend productive climate-smart practices to other farmers in similar conditions, Misiko added.

Climate-smart agriculture key to achieve Malabo Declaration

The results from SIMLESA provide African governments with evidence to develop policies that achieve the Malabo Declaration to implement resilient farming systems to enhance food security in the face of a growing climate risks, said Marenya.

Hotter temperatures, increased dry spells and erratic rainfall are major concerns to farmers, who produce the majority of the region’s food almost entirely on rain-fed farms without irrigation.

If these smallholders are to keep up with food demand of a population set to almost double by 2050 while overcoming challenges they need productive and climate-resilient cropping systems.

CIMMYT research identifies that the defining principles of conservation agriculture are critical but alone are not enough to shield farmers from the impacts of climate change. Complementary improvements in economic policies, markets and institutions — including multi-sectoral linkages between smallholder agriculture and the broader economy — are required to make climate-resilient farming systems more functional for smallholder farmers in the short and long term, said Marenya.

Tek Sapkota (center) stands for a group photo with other scientists working on the IPCC’s special report on climate change and land, at the second lead author meeting in Christchurch, New Zealand, in March 2018.

Breaking Ground: Tek Sapkota finds ways to reduce emissions from agriculture without compromising food security

Written by Rodrigo Ordóñez on . Posted in Features.

Breaking Ground Postcard TEK SAPKOTA

As the world population increases, so does the need for food. “We need to produce more to feed increasing populations and meet dietary demands,” says Tek Sapkota, agricultural systems and climate change scientist at the International Maize and Wheat Improvement Center (CIMMYT). In the case of agriculture, the area of land under cultivation is limited, so increased food production has to come through intensification, Sapkota explains. “Intensification means that you may be emitting more greenhouse gases if you’re applying more inputs, so we need to find a way to sustainable intensification: increase the resilience of production systems, but at the same time decrease greenhouse gas emissions, at least emission intensity.”

Sapkota is involved in a number of global climate change science and policy forums. He represents CIMMYT in India’s GHG platform, a multi-institution platform that regularly prepares greenhouse gas emission estimates at the national and state levels and undertakes relevant policy analyses. Nominated by the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) and his country, Nepal, he is one of the lead authors of the “special report on climate change and land” of  the Intergovernmental Panel on Climate Change (IPCC).

He coordinates climate change mitigation work at CIMMYT. “I am mainly involved in quantification of greenhouse gas emissions and the environmental footprint from agricultural production systems, exploring mitigation options and quantifying their potential at different scales in different regions,” Sapkota says. In addition, he explores low-carbon development activities and the synergies between food production, adaptation and mitigation work within the different components of CIMMYT’s projects.

Agriculture is both a victim of as well as a contributor to climate change, Sapkota explains. “Climate change affects all aspects of food production, because of changes in temperature, changes in water availability, CO2 concentrations, etc.,” he says. “The other side of the coin is that agriculture in general is responsible for about 25 to 32 percent of total greenhouse gas emissions.”

Tek Sapkota (center) stands for a group photo with other scientists working on the IPCC’s special report on climate change and land, at the second lead author meeting in Christchurch, New Zealand, in March 2018.
Tek Sapkota (center) stands for a group photo with other scientists working on the IPCC’s special report on climate change and land, at the second lead author meeting in Christchurch, New Zealand, in March 2018.

Measuring emissions and examining mitigation options

A big part of Sapkota’s work is to find ways to mitigate the effects of climate change and the emissions from the agricultural sector. There are three types of mitigation measures, he explains. First, on the supply side, agriculture can “increase efficiency of the inputs used in any production practice.” Second, there’s mitigation from the demand side, “by changing the diet, eating less meat, for example.” Third, by reducing food loss and waste: “About 20 percent of the total food produced for human consumption is being lost, either before harvest or during harvest, transport, processing or during consumption.”

Sapkota and his team analyze different mitigation options, their potential and their associated costs. To that purpose, they have developed methodologies to quantify and estimate greenhouse gas emissions from agricultural products and systems, using field measurement techniques, models and extrapolation.

“You can quantify the emission savings a country can have by following a particular practice” and “help countries to identify the mitigation practices in agriculture that can contribute to their commitments under the Paris climate agreement.”

Their analysis looks at the biophysical mitigation potential of different practices, their national-level mitigation potential, their economic feasibility and scalability, and the country’s governance index and readiness for finance — while considering national food security, economic development and environmental sustainability goals.

Recently, Sapkota and his colleagues completed a study quantifying emissions from the agricultural sector in India and identifying the best mitigation options.

This type of research has a global impact. Since agriculture is a contributor to climate change “better management of agricultural systems can contribute to reducing climate change in the future,” Sapkota says. Being an important sector of the economy, “agriculture should contribute its share.”

CIMMYT scientist Tek Sapkota (second from left) explains greenhouse gas emissions measurement methods to a visiting group of scientists.
CIMMYT scientist Tek Sapkota (second from left) explains greenhouse gas emissions measurement methods to a visiting group of CCAFS and Indian scientists. (Photo: CCAFS)

Impact on farmers

Sapkota’s research is also helping farmers today. Inefficient use of products and inputs is not only responsible for higher greenhouse gas emissions, but it also costs farmers more. “For example, if farmers in the Indo-Gangetic Plain of India are applying 250 to 300 kg of nitrogen per hectare to produce wheat or rice, by following precision nutrient management technologies they can get similar yield by applying less nitrogen, let’s say 150 kg.” As farmers cut production costs without compromising yield, “their net revenue from their products will be increased.”

Farmers may also get immediate benefits from government policies based on the best mitigation options. “Governments can bring appropriate policy to incentivize farmers who are following those kinds of low-emission technologies, for example.”

Farmers could also get rewarded through payments for ecosystem services or for their contribution to carbon credits.

Sapkota is happy that his work is beneficial to farmers. He was born in a small village in the district of Kaski, in the mid-hills of Nepal, and agriculture was his family’s main livelihood. “I really enjoy working with farmers,” he says. “The most fascinating part of my work is going to the field: talking to farmers, listening to them, learning what kind of farming solutions they’re looking for, and so on. This helps refine our research questions to make them more strategic, because the way farmers look at a problem is sometimes entirely different from the way we look at it.”

When he was in Himalaya Secondary School, he studied agriculture as a vocational subject. “I was interested because we were doing farming at home.” This vocation got cemented in university, in the 1990s. When he heard about the agricultural industry and the future opportunities, he decided to pursue a career in science and focus on agriculture. He got his bachelor’s and master’s degree of science in agriculture from the Institute of Agriculture and Animal Science (IAAS), Tribhuvan University, in Nepal.

Tek Sapkota (second from left) and other scientists participate in a small group session during a meeting of lead authors of the Intergovernmental Panel on Climate Change (IPCC).
Tek Sapkota (second from left) and other scientists participate in a small group session during a meeting of lead authors of the Intergovernmental Panel on Climate Change (IPCC).

A global path

He first heard about CIMMYT when he was doing his master’s. “CIMMYT was doing research in maize- and wheat-based plots and systems in Nepal. A few of my friends were also doing their master theses with the financial support of CIMMYT.” After his master’s, he joined an organization called Local Initiatives for Biodiversity, Research and Development (LI-BIRD) which was collaborating with CIMMYT on a maize research program.

Sapkota got a PhD in Agriculture, Environment and Landscapes from the Sant’Anna School of Advanced Studies in Italy, including research in Aarhus University, Denmark.

After defending his thesis, in 2012, he was working on greenhouse gas measurement in the University of Manitoba, Canada, when he saw an opening at CIMMYT. He joined the organization as a post-doctoral fellow and has been a scientist since 2017. Sapkota considers himself a team player and enjoys working with people from different cultures.

His global experience has enriched his personal perspective and his research work. Through time, he has been able to see the evolution of agriculture and the “dramatic changes” in the way agriculture is practiced in least developed countries like Nepal. “When I was a kid agriculture was more manual … but now, a lot of technologies have been developed and farmers can use them to increase the efficiency of farming”.