TEXCOCO, Mexico (CIMMYT) — More nutritious crop varieties developed and spread through a unique global science partnership are offering enhanced nutrition for hundreds of millions of people whose diets depend heavily on staple crops such as maize and wheat, according to a new studyin the science journal Cereal Foods World.
From work begun in the late 1990s and supported by numerous national research organizations and scaling partners, more than 60 maize and wheat varieties whose grain features enhanced levels of zinc or provitamin A have been released to farmers and consumers in 19 countries of Africa, Asia, and Latin America over the last 7 years. All were developed using conventional cross-breeding.
Farmer and consumer interest has grown for some 60 maize and wheat varieties whose grain features enhanced levels of the essential micronutrients zinc and provitamin A, developed and promoted through collaborations of CIMMYT, HarvestPlus, and partners in 19 countries (Map: Sam Storr/CIMMYT).
“The varieties are spreading among smallholder farmers and households in areas where diets often lack these essential micronutrients, because people cannot afford diverse foods and depend heavily on dishes made from staple crops,” said Natalia Palacios, maize nutrition quality specialist at the International Maize and Wheat Improvement Center (CIMMYT) and co-author of the study.
More than 2 billion people worldwide suffer from “hidden hunger,” wherein they fail to obtain enough of such micronutrients from the foods they eat and suffer serious ailments including poor vision, vomiting, and diarrhea, especially in children, according to Wolfgang Pfeiffer, co-author of the study and head of research, development, delivery, and commercialization of biofortified crops at the CGIAR program known as “HarvestPlus.”
“Biofortification — the development of micronutrient-dense staple crops using traditional breeding and modern biotechnology — is a promising approach to improve nutrition, as part of an integrated, food systems strategy,” said Pfeiffer, noting that HarvestPlus, CIMMYT, and the International Institute of Tropical Agriculture (IITA) are catalyzing the creation and global spread of biofortified maize and wheat.
“Eating provitamin A maize has been shown to be as effective as taking Vitamin A supplements,” he explained, “and a 2018 study in India found that using zinc-biofortified wheat to prepare traditional foods can significantly improve children’s health.”
Six biofortified wheat varieties released in India and Pakistan feature grain with 6–12 parts per million more zinc than is found traditional wheat, as well as drought tolerance and resistance to locally important wheat diseases, said Velu Govindan, a breeder who leads CIMMYT’s work on biofortified wheat and co-authored the study.
“Through dozens of public–private partnerships and farmer participatory trials, we’re testing and promoting high-zinc wheat varieties in Afghanistan, Ethiopia, Nepal, Rwanda, and Zimbabwe,” Govindan said. “CIMMYT is also seeking funding to make high-zinc grain a core trait in all its breeding lines.”
Pfeiffer said that partners in this effort are promoting the full integration of biofortified maize and wheat varieties into research, policy, and food value chains. “Communications and raising awareness about biofortified crops are key to our work.”
For more information or interviews, contact:
Mike Listman Communications Consultant
International Maize and Wheat Improvement Center (CIMMYT)
m.listman@cgiar.org, +52 (1595) 957 3490
A recent study shows the slow adoption of conservation agriculture practices in sub-Saharan Africa, despite their multiple benefits for smallholder farmers. In Zimbabwe, it is estimated that no more than 2.5% of cropland is cultivated under conservation agriculture principles.
One of the constraints is the lack of appropriate machinery and tools that reduce drudgery. “Addressing a wide set of complementary practices, from nutrient and weed management and judicious choice of crop varieties to labor demand, is key to making conservation agriculture profitable and feasible for a greater number of farmers,” said Christian Thierfelder, Principal Scientist at the International Maize and Wheat Improvement Center (CIMMYT).
Farmers in the district of Murehwa, in Zimbabwe’s Mashonaland East Province, have embraced sustainable farming systems. They are benefitting from higher yields and new sources of income, and they are improving soil fertility.
Netsai Garwe (left) and Cosmas Garwe in their maize field, Ward 4, Murewa district, Zimbabwe. (Photo: Shiela Chikulo/CIMMYT)
Cosmas and Netsai Garwe’s homestead copes well despite the erratic weather. They own a lush one-acre field of maize and well-fed livestock: 18 cows, 9 goats and 45 free-range chickens. Two years after a crop-livestock integration initiative funded by the Australian Centre for International Agricultural Research (ACIAR) ended, the family still benefits from the conservation agriculture practices they learnt.
“We were taught the value of minimum tillage using direct seeding, rotation, mulching and weeding to ensure that our maize crop thrived,” explained Cosmas Garwe. “Intercropping and crop rotation with legumes like soybean, pigeon pea and velvet beans really improved our soil,” said Netsai Garwe.
Like the Garwes, more than 2,000 farmers in Murehwa district are scaling the production of lablab and velvet beans, which implies almost complete adoption. Effective extension support, local innovation platforms, and access to profitable crop and livestock markets have been key drivers for widespread adoption.
Better soil and cash cows
Many of these smallholder farmers’ fields have been under cultivation for generations and the granitic sandy soils, predominant in the area, have become very poor in soil organic matter, a key component of soil fertility.
“Nitrogen-fixing green manure cover crops such as velvet beans, lablab and jack beans can provide an affordable way for smallholder farmers to bring back soil fertility, especially nitrogen, into the soil,” explained Thierfelder. “Once the soils become responsive to mineral fertilizer again, a combination of leguminous crop rotations, manure use and in-organic fertilizer will provide stable and sustained crop yields of maize, their main food crop, even under a changing climate.”
Starting the second year the Garwes tried conservation agriculture on a 0.4-hectare plot, their yields improved, realizing 1.2 tons. As an additional benefit, the cover crops could be used as new animal feed sources, so they could keep maize crop residues as soil cover and increase the amount of organic matter in the soils.
Adoption of green manure cover crops was not easy at first, but farmers from Murehwa quickly realized that lablab and velvet beans improved the fattening of cattle and poultry. Drying the cover crop, they were able to produce protein-rich hay bales, sought-after in winter when other fodder stocks usually run low.
Better-fed, healthier animals meant better sales, as the Garwes could now get around $1,200 for one cow. Neighboring farmers soon found this new crop-livestock system appealing and joined the initiative.
Cattle fattening pens at Cosmas and Netsai Garwe’s homestead. (Photo: Shiela Chikulo/CIMMYT)
Saving for a dry day
The economic opportunities for farmers in Murehwa go beyond cow sales. In 2013, the Klein Karoo (K2) seed company offered contracts to farmers for the production of lablab seed. Suddenly the crop became highly profitable, which trigged adoption by almost all the farmers in the area.
As explained by extension officer Ngairo, “there is lablab and velvet beans grown everywhere, at homestead plots, school gardens… using ripline seeding techniques and showing the widespread adoption of conservation agriculture practices in the ward.”
Better incomes from livestock, fodder and lablab seeds had ripple effects for these Murehwa communities.
Lilian Chimbadzwa shows the house they were able to build in 2013 using proceeds from lablab sales. (Photo: Shiela Chikulo/CIMMYT)
Since they adopted lablab and conservation agriculture practices in 2013, Kumbirai and Lilian Chimbadzwa transformed their asset base. They were able to complete their four-bedroom house, connect their homestead with the national electricity network and send their daughter to a nearby boarding school.
Despite prolonged dry spells during the last season and the threat of fall armyworm, these farmers have been coping much better than those practicing conventional tillage farming.
“Farmers taking up lablab and other leguminous cover crops have not only improved their incomes, but also the resilience of their farming systems,” explained Isaiah Nyagumbo, Cropping Systems Agronomist at CIMMYT. “Conservation agriculture practices such as mulching help retain soil moisture, while pests and diseases are less prominent in diversified fields planted with stress tolerant maize varieties and legume cover crops.”
Crop rotation of maize and velvet bean at Kumbirai and Lilian Chiambadzwa’s plot has guaranteed high yields in an El Nino season. (Photo: Shiela Chikulo/CIMMYT)
For CIMMYT and other institutions willing to scale sustainable intensification practices in Africa, there is plenty to learn from the farmers in Murehwa.
New research in the district has started to test how climate-adapted push-pull systems support smallholder farmers in overcoming the invasive fall armyworm using biological means. These systems involve conservation agriculture, green manure and legume intercropping, and planting high-productivity fodders surrounding the plots. This would also reduce the reliance on pesticides, which may be harmful for humans and the environment.
Researchers, policymakers and other agricultural partners participated in the workshop on fall armyworm. (Photo: Uttam/CIMMYT)
The International Maize and Wheat Improvement Center (CIMMYT) and the Bangladesh Wheat and Maize Research Institute (BWMRI), organized a training on fall armyworm on April 25, 2019 at the Bangladesh Agricultural Research Council (BARC). Experts discussed the present outbreak status, progress on strategic research, and effective ways to control this destructive pest.
The event featured Dan McGrath, Entomologist and Professor Emeritus at Oregon State University, and Joseph Huesing, Senior Biotechnology Advisor and Program Area Lead for Advanced Approaches to Combating Pests and Diseases at the United States Agency for International Development (USAID). Also attending were senior officials from Bangladesh Agricultural Research Institute (BARI), Bangladesh Rice Research Institute (BRRI), Bangladesh Agricultural University (BAU), Department of Agricultural Extension, BARC, BWMRI and CIMMYT.
“Fall armyworm cannot be eradicated. It is endemic and farmers have to learn to manage it,” said Huesing in his overview of the fall armyworm infestation in Africa. He also mentioned that fall armyworm is generally followed by southern armyworm, so Bangladesh will need a strategy for managing multiple pests.
“Fall armyworm cannot be eradicated. It is endemic and farmers have to learn to manage it.”
— Joseph Huesing, USAID
Huesing explained that an effective approach for controlling fall armyworm and other pests is “knowledge, tools and policy.”
According to Huesing, Bangladeshi farmers have adequate knowledge about the pest and how to control it, especially compared to African farmers. The next step is securing the necessary tools to control fall armyworm, like spraying their fields with necessary insecticides by authorized personnel. Huesing emphasized the importance of appropriate policy implementation, particularly to ensure the registration of the right kind of insecticides assigned to effectively control fall armyworm.
Fall armyworm is a fast-reproducing species that can attack crops and cause devastation almost overnight. Even though the level of infestation in Bangladesh is still relatively light, more than 80 varieties of crops have already been attacked in 22 districts within just a few months.
Huesing indicated that safer options included handpicking of the pest, treating seeds, pheromone traps, flood irrigation and crop rotation. Currently, to help farmers learn more about the pest, the Department of Agricultural Extension is distributing factsheets and conducting awareness-raising workshops in different villages.
McGrath focused on the long-term management of fall armyworm and how Bangladesh can learn from the experience of Africa in order to avoid the same errors. McGrath suggested that weather forecasts were an important tool for helping determine when and where outbreaks might occur. Training relevant personnel is also a crucial aspect of reining in this plague. “Training the trainers has to be hands on. We need to put more emphasis on the field than on the classroom,” McGrath said.
This workshop was part of the Cereal Systems Initiative for South Asia (CSISA).
The International Maize and Wheat Improvement Centre (CIMMYT) and the Association for Strengthening Agricultural Research in Eastern and Southern Africa (ASARECA) gathered agriculture leaders, experts, ministers and permanent secretaries from 14 countries in the region May 2-4, 2019 in Kampala, Uganda. These experts reflected on the lessons learned from the eight year-long Sustainable Intensification of Maize and Legumes farming systems in Eastern and Southern Africa (SIMLESA) project, funded by the Australian Centre for International Agricultural Research (ACIAR).
The minister of agriculture, animal industry and fisheries of Uganda, Vincent Ssempijja, reminded that “Africa is paying a high price from widespread land degradation, and climate change is worsening the challenges smallholder farmers are facing.” Staple crop yields are lagging despite a wealth of climate-smart technologies like drought-tolerant maize varieties or conservation agriculture.
“It is time for business unusual,” urged guest speaker Kirunda Kivejinja, Uganda’s Second Deputy Prime Minister and Minister of East African Affairs.
Research conducted by CIMMYT and national partners in Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania and Uganda under the SIMLESA project provided good evidence that sustainable intensification based on conservation agriculture works — it significantly increased food crop yields, up to 38%, as well as incomes, while sustainably preserving soil health.
In Malawi, where conservation agriculture adoption rose from 2% in 2011 to 35% in the 2017/18 season, research showed increases in water infiltration compared to the conventional ridge-and-furrow system of up to 90%, while soil organic carbon content increased by 30%. This means that soil moisture is better retained after rainfall, soil is more fertile, and plants grow well and cope much better during dry spells.
The SIMLESA project revealed that many farmers involved in CIMMYT research work, like Joseph Ntirivamunda in Rwanda, were interested in shifting towards more sustainable intensification practices. However, large-scale adoption still faces many hurdles.
“You cannot eat potential,” pointed out CIMMYT scientists and SIMLESA project leader Paswel Marenya. “The promise of conservation agriculture for sustainable intensification needs to be translated into more food and incomes, for farmers to adopt it widely.”
CIMMYT’s director general Martin Kropff (left) greets Uganda’s second deputy prime minister, Kirunda Kivejninja. (Photo: Jerome Bossuet)
The scale conundrum
Farmers’ linkages to markets and services are often weak, and a cautious analysis of trade-offs is necessary. For instance, more research is needed about the competing uses of crop residues for animal feed or soil cover.
Peter Horne, General Manager for ACIAR’s global country programs, explained that science has an important role in informing policy to drive this sustainable transformation. There are still important knowledge gaps to better understand what drives key sustainable farming practices. Horne advised to be more innovative than the traditional research-for-development and extension approaches, involving for instance the private sector.
Planting using a hoe requires 160 hours of labor per hectare. A two-wheel tractor equipped with a planter will do the same work in only 3 hours.
One driver of change that was stressed during the Kampala forum was the access to appropriate machinery, like the two-wheel tractor equipped with a direct planter. While hoe planting requires 160 hours of labor per hectare, the planter needs only 3 hours per hectare, enabling timely planting, a crucial factor to respond effectively to the increased vagaries of the weather and produce successful harvests. While some appropriate mechanization options are available at the pilot stage in several African countries like Ethiopia or Zimbabwe, finding the right business models for service provision for each country is key to improve access to appropriate tools and technologies for smallholder farmers. CIMMYT and ACIAR seek to provide some answers through the complementary investments in the Farm Mechanization and Conservation Agriculture for Sustainable Intensification (FACASI) project.
CASI can be scaled but requires tailoring sustainable intensification agronomic advices adapted to local environment and farming systems. Agricultural innovation platforms like the Mwanga mechanization youth group in Zimbabwe are one way to co-create solutions and opportunities between specific value chain actors, addressing some of the constraints farmers may face while implementing conservation agriculture practices.
Providing market incentives for farmers has been one challenging aspect, which may be overcome through public-private partnerships. Kilimo Trust presented a new consortium model to drive sustainable intensification through a market pull, linking smallholder farmers with food processors or aggregators.
“SIMLESA, as a long-term ambitious research program, has delivered remarkable results in diverse farming contexts, and conservation agriculture for sustainable intensification now has a more compelling case,” said Eric Huttner, ACIAR research program manager. “We should not ignore the complexity of conservation agriculture adoption, as shifting to new farming practices brings practical changes and potential risks for farmers, alongside benefits,” he added. As an immediate step, Huttner suggested research to define who in the public and private sectors is investing and for what purpose — for example, access to seed or machinery. Governments will also need further technical support to determine exactly how to mainstream conservation agriculture in future agricultural policy conversations, plans and budgets.
“Looking at SIMLESA’s evidence, we can say that conservation agriculture works for our farmers,” concluded Josefa Leonel Correia Sacko, Commissioner for Rural Economy and Agriculture of the African Union. During the next African Union Specialized Technical Committee in October 2019, she will propose a new initiative, scaling conservation agriculture for sustainable intensification across Africa “to protect our soils and feed our people sustainably.”
Josefa Leonel Correia Sacko, Commissioner for Rural Economy and Agriculture of the African Union, speaks at the SIMLESA regional forum. (Photo: Jerome Bossuet)
Partners of the Stress Tolerant Maize for Africa (STMA) project held their annual meeting May 7–9, 2019, in Lusaka, Zambia, to review the achievements of the past year and to discuss the priorities going forward. Launched in 2016, the STMA project aims to develop multiple stress-tolerant maize varieties for diverse agro-ecologies in sub-Saharan Africa, increase genetic gains for key traits preferred by the smallholders, and make these improved seeds available at scale in the target countries in partnership with local public and private seed sector partners.
The project, funded by the Bill & Melinda Gates Foundation and the United States Agency for International Development (USAID), is led by the International Maize and Wheat Improvement Center (CIMMYT), and implemented together with the International Institute for Tropical Agriculture (IITA), national agricultural research systems and seed company partners in 13 countries in sub-Saharan Africa.
The meeting was officially opened by the Deputy Director of the Zambia Agriculture Research Institute (ZARI), Monde Zulu. “Maize in Africa faces numerous challenges such as drought, heat, pests and disease. Thankfully, these challenges can be addressed through research. I would like to take this opportunity to thank CIMMYT and IITA. Your presence here is a testament of your commitment to improve the livelihoods of farmers in sub-Saharan Africa,” she said.
The International Maize and Wheat Improvement Center (CIMMYT) and its partners are working together in the fight against challenges such as drought, maize lethal necrosis and fall armyworm. The STMA project applies innovative technologies such as high-throughput phenotyping, doubled haploids, marker-assisted breeding and intensive germplasm screening to develop improved stress-tolerant maize varieties for smallholder farmers. The project team is also strengthening maize seed systems in sub-Saharan Africa through public-private partnerships.
The efforts are paying off: in 2018, 3.5 million smallholder farmers planted stress-tolerant maize varieties in 10 African countries.
The deputy director of the Zambia Agriculture Research Institute (ZARI), Monde Zulu (fourth from left), gives the opening address of the STMA Annual Meeting 2019. Left to right: Mick Mwala, University of Zambia; Tony Cavalieri, Bill & Melinda Gates Foundation; B.M. Prasanna, CIMMYT; Monde Zulu, ZARI; Mwansa Kabamba, ZARI; Cosmos Magorokosho, CIMMYT; and Abebe Menkir, IITA.
Yielding results
CIMMYT researcher and STMA project leader Cosmos Magorokosho reminded the importance of maize in the region. “Maize is grown on over 35 million hectares in sub-Saharan Africa, and more than 208 million farmers depend on it as a staple crop. However, average maize yields in sub-Saharan Africa are among the lowest in the world.” Magorokosho pointed out that the improved maize varieties developed through the project “provide not only increased yields but also yield stability even under challenging conditions like drought, poor soil fertility, pests and diseases.”
“STMA has proved that it is possible to combine multiple stress tolerance and still get good yields,” explained B.M. Prasanna, director of CIMMYT’s Global Maize Program and the CGIAR Research Program on Maize (MAIZE). “One of the important aspects of STMA are the partnerships which have only grown stronger through the years. We are the proud partners of national agricultural research systems and over 100 seed companies across sub-Saharan Africa.”
Keynote speaker Hambulo Ngoma of the Indaba Agricultural Policy Research Institute (IAPRI) addressed the current situation of maize in Zambia, where farmers are currently reeling from recent drought. “Maize is grown by 89% of smallholder farmers in Zambia, on 54% of the country’s cultivable land, but productivity remains low. This problem will be exacerbated by expected population growth, as the population of Zambia is projected to grow from over 17 million to 42 million by 2050,” he said.
STMA meeting participants pose for a group photo during the field visit to QualiBasic Seed. (Photo: Jennifer Johnson/CIMMYT)
Down to business
On May 8, participants visited three partner local seed companies to learn more about the opportunities and challenges of producing improved maize seed for smallholder farmers.
Afriseed CEO Stephanie Angomwile discussed her business strategy and passion for agriculture with participants. She expressed her gratitude for the support CIMMYT has provided to the company, including access to drought-tolerant maize varieties as well as capacity development opportunities for her staff.
Bhola Nath Verma, principal crop breeder at Zamseed, explained how climate change has a visible impact on the Zambian maize sector, as the main maize growing basket moved 500 km North due to increased drought. Verma deeply values the partnership with the STMA project, as he can source drought-tolerant breeding materials from CIMMYT and IITA, allowing him to develop early-maturing improved maize varieties that escape drought and bring much needed yield stability to farmers in Angola, Botswana, the Democratic Republic of the Congo, Tanzania and Zambia.
At QualiBasic Seed, STMA partners were given the opportunity to learn and ask questions about the company’s operations, including the seed multiplication process in Zambia and the importance of high-quality, genetically pure foundation seed for seed companies.
Emmanuel Angomwile (left) and Stephanie Angomwile (center) answer visitors’ questions at their seed company, Afriseed. (Photo: Jennifer Johnson/CIMMYT)
Young ideas
The meeting concluded with an awards ceremony for the winners of the 2019 MAIZE Youth Innovators Awards – Africa, established by MAIZE in collaboration with the Young Professionals for Agricultural Development (YPARD). These awards recognize the contributions of young women and men under 35 who are implementing innovations in African maize-based agri-food systems, including research-for-development, seed systems, agribusiness, and sustainable intensification. This is the second year of the MAIZE Youth Awards, and the first time it has been held in Africa. Winners include Hildegarde Dukunde of Rwanda and Mila Lokwa Giresse of the Democratic Republic of the Congo in the change agent category, Admire Shayanowako of the Republic of South Africa and Ismael Mayanja of Uganda in the research category, and Blessings Likagwa of Malawi in the farmer category.
Winners of the 2019 MAIZE Youth Innovators Awards – Africa receive their awards at the STMA meeting in Lusaka, Zambia. From left to right: Admire Shayanowako, Blessings Likagwa, Ismael Mayanja and Hildegarde Dukunde. Fifth awardee Mila Lokwa Giresse not pictured. (Photo: J.Bossuet/CIMMYT)
In November 2015, Jelle Van Loon set off for Zimbabwe, with a cross-section plan in his backpack. He spent two weeks working with a group of blacksmiths, searching Harare for parts and assembling machines in a bid to test whether the construction plans developed by his team were indeed designed to be built anywhere. “We might have had to change a few things, but three working machines were built, proving the accessibility of the construction plans and inherent replicability of the designs.”
From studying agronomic engineering and crop modelling in Belgium to working on supply chain issues in Peru, Jelle Van Loon amassed a range of experience before joining the International Maize and Wheat Improvement Center (CIMMYT) in 2012. Soon after joining, he began shaping up a team to work on mechanization issues.
“First and foremost I’m an agricultural engineer; I just happen to have a high affinity with mechanics,” he says. “I think my advantage is having a broad knowledge, being able to understand agronomy as well as mechanical engineering, and having studied agricultural economics in developing countries.”
This background has served him well in a role where a hands-on, multidisciplinary approach is crucial.
“Mechanization doesn’t necessarily mean building or creating more machines,” Van Loon explains, “but rather introducing technology and farm equipment to farmers to facilitate their work, as well as supporting them on how and when to use it to increase production efficiency.” Many people also assume that mechanization only involves motorized equipment such as tractors, he adds, when in fact any tool, even simple hand tools, which facilitate farmer work and alleviate drudgery fit into this concept.
CIMMYT’s mechanization team carries out research and development on a range of farm equipment. Team members draw and design prototypes, test them in the field and develop protocols for experiments. Combining agronomy and mechanics, they work to create machinery that supports farmers in their day-to-day work at each stage of the crop cycle: from land preparation, planting and fertilization, to harvest and shelling. They also support the generation of new business models which can deliver appropriate machinery to farmers working within resilient agri-food systems.
Welcome to the machine
One of the biggest challenges is changing the way farmers work. Many are resistant to investing in new machinery because they are unsure of how to use it, and simply cannot afford the risk of failure. As such, the team also places an emphasis on extension work. They have set up centers where growers can learn about the equipment and rent out some model machines. They also build the capacity of service providers through training on functional engineering for blacksmiths and manufacturers, and market intelligence for small sector entrepreneurs.
“It’s beyond just designing the machine. It’s really about taking products out to the field, seeing what works well and where, and then thinking about how we can get these products into the hands of farmers.”
Building on the work being carried out in Mexico, Van Loon is always looking at how other regions can also benefit from the mechanization unit and opportunities for collaborating with colleagues and partners in Africa and Asia. Equipment developed for farmers in Africa or Latin America could be adapted for use in South Asia or vice versa, but this requires a solid understanding of each region’s unique opportunities and challenges.
He points to the example of the two-wheel tractor engine, developed in China and popularized in Asia during the 1980s, when famine and the loss of draft animals prompted governments to subsidize that particular piece of equipment at the right time. The tractor is ubiquitous in countries such as Bangladesh, but it is unclear whether the same success is replicable in Africa and Latin America, neither of which has the same conditions, second-hand markets or import facilities. “We’re trying to learn from cross-regional efforts to scale up. Being able to understand different areas helps us find the weakest links and create more enabling environments,” Van Loon explains.
He and his team are continuously developing and evaluating new ideas, trialing ways of embedding mechatronics or sensory-based technology into their machines to help capture data and ease farmer workloads. Finding a way to keep these low-cost and convenient for farmer use may be a challenge, but positive testimonials from farmers keep him excited about the possibilities.
“I think it’s worthwhile to follow through on wild new ideas and see what happens because when it works out, the positive impact and change we help create is all that matters,” Van Loon notes.
“And more so, the cool thing about working in mechanization is we can go as far as our creativity lets us.”
Jelle Van Loon demonstrates machinery for visitors at CIMMYT’s global headquarters in Mexico. (Photo: Gerardo Mejía/CIMMYT)
Fall armyworm, a voracious pest now present in both Africa and Asia, has been predicted to cause up to $13 billion per year in crop losses in sub-Saharan Africa, threatening the livelihoods of millions of farmers throughout the region.
“In their haste to limit the damage caused by the pest, governments in affected regions may promote indiscriminate use of chemical pesticides,” say the authors of a recent study on fall armyworm management. “Aside from human health and environmental risks,” they explain, “these could undermine smallholder pest management strategies that depend largely on natural enemies.”
Agro-ecological approaches offer culturally appropriate, low-cost pest control strategies that can be easily integrated into existing efforts to improve smallholder incomes and resilience through sustainable intensification. Researchers suggest these should be promoted as a core component of integrated pest management programs in combination with crop breeding for pest resistance, classical biological control and selective use of safe pesticides.
However, the suitability of agro-ecological measures for reducing fall armyworm densities and impact must be carefully assessed across varied environmental and socioeconomic conditions before they can be proposed for wide-scale implementation.
To support this process, researchers at the International Maize and Wheat Improvement Center (CIMMYT) reviewed evidence for the efficacy of potential agro-ecological measures for controlling fall armyworm and other pests, consider the associated risks and draw attention to critical knowledge gaps. Findings from the Africa-wide study indicate that several measures can be adopted immediately, such as sustainable soil management, intercropping with appropriately selected companion plants and the diversification of farm environments through management of habitats at multiple spatial scales.
Read the full article “Agro-ecological options for fall armyworm (Spodoptera frugiperda JE Smith) management: Providing low-cost, smallholder friendly solutions to an invasive pest” in the Journal of Environmental Management, Volume 243, 1 August 2019, pages 318-330.
Intercropping options for mitigating fall armyworm damage. (Photo: C. Thierfelder/CIMMYT)
Read more recent publications by CIMMYT researchers:
CIMMYT field workers working on wheat crossing as part of the breeding process. (Photo: CIMMYT)
In early 2019, an article published by European climate researchers in the Proceedings of the National Academy of Science (PNAS) journal questioned the climate resilience of modern wheat varieties. The article suggested that modern wheat varieties showed reduced climate resilience as a direct result of modern breeding methods and practices, a claim that researchers at the International Maize and Wheat Improvement Center (CIMMYT) vehemently rebuke.
In a rebuttal letter published in the June issue of PNASa group of scientists, including CIMMYT’s Susanne Dreisigacker and Sarah Hearne, strongly contradict the finding that breeding has reduced climate resilience in European wheat, citing significant flaws in the authors’ methodology, data analyses and interpretation.
“This article discredits European plant breeders and wheat breeders in general, who have been working over many decades to produce a wide range of regionally adapted, stable varieties which perform well under a broad range of climate change conditions,” said CIMMYT wheat molecular geneticist Susanne Dreisigacker.
Among other flaws, they found a number of omissions and inconsistencies.
The article shows a lack of understanding of commonly used terms and principles of breeding theory, criticizing newer wheat varieties for demonstrating a decrease in “climatic response diversity.” Less diversity in wheat response — that is, more stable yields despite the influence of climate change — is a benefit, not a threat, to farmers.
The article authors contradict the common knowledge among farmers and plant breeders that new elite wheat varieties are generally more productive than older varieties; new cultivars are only approved if they show added value in direct comparison to existing varieties.
The article’s claim of long-term losses of climate resilience in “European wheat” is unsubstantiated. The authors extensively used data from three small countries — the Czech Republic, Denmark and Slovakia — which contribute less than five percent of Europe’s wheat supply. Three of the five most important wheat producers in Europe — Russia, Ukraine and the United Kingdom — were not accounted for in the analysis.
The authors failed to report the actual wheat yields in their study, neglected to publish the underlying data with the manuscript and have up to now declined requests to make the data available.
Europe is one of the world’s major wheat producers and threats to its wheat production due to climate change would have serious consequences for world’s food security. Luckily, say the scientists who published the rebuttal letter, this fear is unfounded.
“Wheat producers and bread consumers around the world will be relieved to learn that breeders have not ignored climate change after all,” said letter lead-author Rod Snowdon, from the Department of Plant Breeding at Justus Liebig University of Giessen, Germany.
The full rebuttal letter by 19 international plant breeders, agronomists and scientists, is available on the PNAS site and reprinted in its entirety below.
Reduced response diversity does not negatively impact wheat climate resilience
Kahiluoto et al. (1) assert that climate resilience in European wheat has declined due to current breeding practices. To support this alarming claim, the authors report yield variance data indicating increasingly homogeneous responses to climatic fluctuations in modern wheat cultivars. They evaluated “response diversity,” a measure of responses to environmental change among different species jointly contributing to ecosystem functions (2). We question the suitability of this measure to describe agronomic fitness in single-cultivar wheat cropping systems. Conclusions are made about “long-term trends,” which in fact span data from barely a decade, corresponding to the duration of a single wheat breeding cycle. The authors furthermore acknowledge increasing climate variability during the study period, confounding their analysis of climate response in the same time span.
The underlying data are not published with the manuscript. Thus, the assertion that there is “no inherent trade-off between yield potential and diversity in weather responses” (1) cannot be verified. Inexplicably, the analysis and conclusions ignore absolute yields, which increase over time through breeding (3–6). Furthermore, incompatible data from completely different ecogeographical forms and species of wheat are apparently considered together, and the dataset is strongly biased toward a few small countries with minimal wheat production and narrow agroclimatic gradients.
The study assumes that increased response diversity among different cultivars is associated with yield stability. In contrast, the common, agronomic definition of yield stability refers to the ability of a single cultivar to stably perform well in diverse environments, without excessive responses to fluctuating conditions. Response diversity measures that ignore absolute yield do not support statements about food security or financial returns to farmers.
Cultivar yield potential, stability, and adaptation are enhanced by multienvironment selection over long breeding time frames, encompassing climate fluctuations and a multitude of other relevant environmental variables. Translation to on-farm productivity is promoted by national registration trials and extensive, postregistration regional variety trials in diverse environments. The unsurprising conclusion that planting multiple cultivars enhances overall production stability mirrors longstanding farming recommendations and practice (7). The availability of robust performance data from a broad range of high-performing cultivars enables European farmers to manage their production and income risks.
Kahiluoto et al. (1) speculate about “genetic erosion” of modern cultivars due to a “lack of incentives for breeders to introduce divergent material.” To substantiate these claims, the authors cite inadequate genetic data from non-European durum wheat (8), while explicitly dismissing clearly opposing findings about genetic diversity in European bread wheat (9). Short-term reductions in response diversity in five countries were misleadingly reported as a “long-term decline” in climate resilience in “most European countries,” although six out of seven countries with sufficient data showed no long-term decline. The article from Kahiluoto et al. and the misrepresentation of its results distorts decades of rigorous, successful breeding for yield potential and stability in European wheat and misleads farmers with pronouncements that are not supported by relevant data.
References:
1 H. Kahiluoto et al., Decline in climate resilience of European wheat. Proc. Natl. Acad. Sci. USA 116, 123–128 (2019).
2 T. Elmqvist et al., Response diversity, ecosystem change, and resilience. Front. Ecol. Environ.1, 488–494 (2003).
3 S. De Schepper, M. De Loose, E. Van Bockstaele, P. Debergh, Ploidy analysis of azalea flower colour sports. Meded. Rijksuniv. Gent. Fak. Landbouwkd. Toegep. Biol. Wet.66, 447–449 (2001).
4 I. Mackay et al., Reanalyses of the historical series of UK variety trials to quantify the contributions of genetic and environmental factors to trends and variability in yield over time. Theor. Appl. Genet.122, 225–238 (2011).
5 F. Laidig et al., Breeding progress, environmental variation and correlation of winter wheat yield and quality traits in German official variety trials and on-farm during 1983-2014. Theor. Appl. Genet.130, 223–245 (2017).
6 T. Würschum, W. L. Leiser, S. M. Langer, M. R. Tucker, C. F. H. Longin, Phenotypic and genetic analysis of spike and kernel characteristics in wheat reveals long-term genetic trends of grain yield components. Theor. Appl. Genet.131, 2071–2084 (2018).
7 P. Annicchiarico, “Genotype x environment interactions: Challenges and opportunities for plant breeding and cultivar recommendations.” (Food and Agriculture 201 Organisation of the United Nations, Rome, Italy, 2002), FAO Plant Production and Protection Paper 174.
8 F. Henkrar et al., Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers. Sci. Agric.73, 134–141 (2016).
9 M. van de Wouw, T. van Hintum, C. Kik, R. van Treuren, B. Visser, Genetic diversity trends in twentieth century crop cultivars: A meta analysis. Theor. Appl. Genet. 120, 1241–1252 (2010).
Participants in the five-year workshop for the SRFSI project in Kathmandu in May 2019 stand for a group shot. (Photo: CIMMYT)
Over 50 stakeholders from the Sustainable and Resilient Farming Systems Intensification in the Eastern Gangetic Plains (SRFSI) project engaged in three days of reflection and planning in Kathmandu, Nepal, in early May 2019. Partners from four countries focused on identifying key learnings across a range of topics including value chains, business models, agricultural extension, capacity building, innovation platforms and policy convergence. After almost five years of project activities, there was naturally plenty of vibrant discussion.
The cross-cutting themes of gender and climate change were considered within each topic, to capture project outputs beyond participation and farm level impact. Discussions around gender confirmed the benefits of targeted women’s participation and ensuring that women’s availability was accommodated. Working within the SRFSI project, researchers have identified new business opportunities for women, with benefits for individuals and community groups. In terms of business models, it was highlighted that promoting gender-inclusive strategies for all partners, including the private sector, is necessary. Ensuring a wide range of partnership institutions, such as NGOs with women-centric programs, is also beneficial for reaching more women.
In the five-year SRFSI workshop, participants discussed research outputs and planned the year ahead. (Photo: CIMMYT)
Conservation agriculture-based sustainable intensification techniques have been confirmed as contributing to climate-resilient farming systems, both in terms of mitigation and adaptation. Importantly, the project has demonstrated that these systems can be profitable, climate smart business models in the Eastern Gangetic Plains. They were also seen as fitting well with government plans and policies to address climate change, which was demonstrated by convergence with country and NGO programs that are focused on climate change adaptation.
In keeping with the recently approved no-cost extension of the SRFSI project until June 2020, the final sessions identified remaining research questions in each location and scaling component, and project partners nominated small research activities to fill these gaps. The final year of SRFSI is an excellent opportunity to capture valuable lessons and synthesise project outputs for maximum impact.
The Sustainable and Resilient Farming Systems Intensification Project is a collaboration between the International Maize and Wheat Improvement Center (CIMMYT) and the project funder, the Australian Centre for International Agricultural Research (ACIAR).
Maize is more than a crop in Mexico. While it provides food, feed and raw materials, it is also a bloodline running through the generations, connecting Mexico’s people with their past.
The fascinating diversity of maize in Mexico is rooted in its cultural and biological legacy as the center of origin of maize. Landraces, which are maize varieties that have been cultivated and subjected to selection by farmers for generations, retaining a distinct identity and lacking formal crop improvement, provide the basis of this diversity.
As with any cultural legacy, the cultivation of maize landraces can be lost with the passage of time as farmers adapt to changing markets and generational shifts take place.
Doctoral candidate Denisse McLean-Rodríguez, from the Sant’Anna School of Advanced Studies in Italy, and researchers from the International Maize and Wheat Improvement Center (CIMMYT) have undertaken a new study that traces the conservation and abandonment of maize landraces over the last 50 years in Morelos, Mexico’s second smallest state.
The study is based on a collection of 93 maize landrace samples, collected by Ángel Kato as a research assistant back in 1966-67 and stored in CIMMYT’s Maize Germplasm Bank. Researchers traced the 66 families in Morelos who donated the samples and explored the reasons why they abandoned or conserved their landraces.
Doctoral candidate Denisse McLean-Rodríguez (left) interviews maize farmer Roque Juarez Ramirez at his family home in Morelos to explore his opinions on landrace conservation. (Photo: E. Orchardson/CIMMYT)
Tracing landrace abandonment
In six cases, researchers were able to interview the original farmers who donated the samples to CIMMYT. In other cases, they interviewed their family members, most frequently the sons or daughters, or alternatively their grandchildren, siblings, nephews or widows.
The study reveals that maize landrace cultivation has diminished significantly within the families. Only 13 of the 66 families are still cultivating the same maize seed lots as in 1966-67 and there was consensus that the current social, economic and physical environments are unfavorable for landrace cultivation.
Among the reasons for abandonment are changes in maize cultivation technologies, shifting markets for maize and other crops, policy changes, shifting cultural preferences, urbanization and climate change.
“By finding out about landrace continuity in farmers’ fields and the factors driving change, we were able to better understand the context in which these landraces are currently cultivated,” said McLean-Rodríguez. “Our study also allowed us to evaluate the importance of ex situ conservation in facilities like CIMMYT’s Germplasm Bank.”
Juarez and Oliveros’s grandson shows the family’s heirloom maize: maíz colorado (left) and Ancho maize. (Photo: E. Orchardson/CIMMYT)
Maize biodiversity conservation
Maize landraces can be conserved “in situ” in farmers’ fields and “ex situ” in a protected space such as a germplasm bank or community seed bank.
“These conservation strategies are complementary,” explained McLean-Rodríguez. “Ex situ conservation helps to secure landraces in case of unpredictable conditions that threaten their conservation in the field, while in situ cultivation allows the processes that generated maize’s diversity to continue, allowing the emergence of mutations and the evolution of new potentially beneficial traits.”
The loss of landraces in farmers’ fields over 50 years emphasizes the importance of ex situ conservation. CIMMYT’s Maize Germplasm Bank holds 28,000 samples of maize and its wild relatives from 88 countries, spanning collections dating back to 1943. Safeguarded seed stored in the Germplasm Bank is protected from crises or natural disasters, and is available for breeding and research. Traits found in landraces can be incorporated into new varieties to address some of the world’s most pressing agriculture challenges like changing climates, emerging pests and disease, and malnutrition.
McLean-Rodríguez recalls an aspect of the study that she found particularly rewarding: “Many of the families who had lost their landrace for one reason or another were interested in receiving back samples of their maize from the CIMMYT Germplasm Bank. Some were interested due to personal value, while others were more interested in the productive value. They were very happy to retrieve their maize from the Germplasm Bank, and it would be very interesting to learn whether the repatriated seed is cultivated in the future.”
Ventura Oliveros Garcia holds a photograph of her father, Santos Oliveros, who was one of the maize farmers who donated seed to CIMMYT’s germplasm bank in 1966-67. (Photo: E. Orchardson/CIMMYT)
A family tradition
One of the families to take part in the study was farmer Roque Juarez Ramirez and his wife, Ventura Oliveros Garcia, whose father was one of the donor farmers from Morelos. “I was so happy to hear the name of my father, [Santos Oliveros],” recalls Oliveros, remembering the moment McLean-Rodríguez contacted her. “He had always been a maize farmer, as in his day they didn’t cultivate anything else. He planted on his communal village land [ejido] and he was always able to harvest a lot of maize, many ears. He planted an heirloom variety of maize that we called arribeño, or marceño, because it was always planted in March.”
Juarez senses his responsibility as a maize farmer: “I feel that the importance [of maize farming] is not small, but big. We are not talking about keeping 10 or 20 people alive; we have to feed a whole country of people who eat and drink, apart from providing for our families. We, the farmers, generate the food.”
Filling vessels of champurrado, a Mexican maize-based sweet drink, and presenting samples of the family’s staple maize — maíz colorado and the Ancho landrace — Oliveros describes what maize means to her: “Maize is very important to my family and me because it is our main source of food, for both humans and animals. We use our maize variety to make pozole, tortillas, tamales, atole, quesadillas, picadas and many other foods.”
The Juarez-Oliveros family substituted the Ancho seed lot from Olivero’s father with another seed lot from the Ancho landrace obtained from her husband’s family. The Ancho landrace is used to make pozole, and continues to be widely cultivated in some municipalities of Morelos, including Totolapan, where the family resides. However, researchers found other landraces present in the 1966-67 collection, such as Pepitilla, were harder to trace 50 years later.
Maíz colorado (left), or red maize, is an important part of the family’s diet. The family’s Ancho maize (right) has characteristically wide and flat kernels, and is a key ingredient of the pozole stew. (Photo: E. Orchardson/CIMMYT)
The study shows that landrace abandonment is common when farming passed from one generation to the next. Older farmers were attached to their landraces and continued cultivating them, even in the face of pressing reasons to change or replace them. When the younger generations take over farm management, these landraces are often abandoned.
Nonetheless, young farmers still value the cultural and culinary importance of landraces. “Maize has an important traditional and cultural significance, and is fundamental to our economy,” said Isaac Juarez Oliveros, son of Roque and Ventura. “I have been planting [maize landraces] since I was around 15 to 20 years old. I got my maize seed from my parents. I believe it is important for families to keep planting their maize, as it has become tradition passed down through many generations.”
The family’s son, Isaac Juarez Oliveros, stands outside the maize storage room where they store and dry their harvested maize for sale and consumption. (Photo: E. Orchardson/CIMMYT)
The legacy for future generations
Global food security depends on the maintenance of high genetic biodiversity in such key staple food crops as maize. Understanding the causes of landrace abandonment can help to develop effective landrace conservation strategies. The authors suggest that niches for landrace conservation and even expansion can be supported in the same manner that niches have been created for improved maize and other commercial crops. Meanwhile, management of genetic resources is vital, both in the field and in germplasm banks, especially in developing countries where broader diversity exists.
For Oliveros, it is a matter of family legacy: “It means a lot to me that [my family’s seed] was preserved because it has allowed my family’s maize and my father’s memory to stay alive.”
“Farmers who cultivate landraces are providing an invaluable global public service,” state the authors of the study. “It will be key to encourage maize landrace cultivation in younger farmers. Tapping into the conservation potential of the current generation of farmers is an opportunity we should not miss.”
A special acknowledgement to the families, focus group participants and municipal authorities from the state of Morelos who kindly devoted time to share their experiences with us, on the challenges and rewards of maize landrace conservation.
MARPLE team members Dave Hodson and Diane Saunders (second and third from left) stand for a photograph after receiving the International Impact award. With them is Malcolm Skingle, director of Academic Liaison at GlaxoSmithKline (first from left) and Melanie Welham, executive chair of BBSRC. (Photo: BBSRC)
The research team behind the MARPLE (Mobile And Real-time PLant disEase) diagnostic kit won the International Impact category of the Innovator of the Year 2019 Awards, sponsored by the United Kingdom’s Biotechnology and Biological Sciences Research Council (BBSRC).
The team — Diane Saunders of the John Innes Centre (JIC), Dave Hodson of the International Maize and Wheat Improvement Center (CIMMYT) and Tadessa Daba of the Ethiopian Institute for Agricultural Research (EIAR) — was presented with the award at an event at the London Science Museum on May 15, 2019. In the audience were leading figures from the worlds of investment, industry, government, charity and academia, including the U.K.’s Minister of State for Universities, Science, Research and Innovation, Chris Skidmore.
The BBSRC Innovator of the Year awards, now in their 11th year, recognize and support individuals or teams who have taken discoveries in bioscience and translated them to deliver impact. Reflecting the breadth of research that BBSRC supports, they are awarded in four categories of impact: commercial, societal, international and early career. Daba, Hodson and Saunders were among a select group of 12 finalists competing for the four prestigious awards. In addition to international recognition, they received £10,000 (about $13,000).
“I am delighted that this work has been recognized,” Hodson said. “Wheat rusts are a global threat to agriculture and to the livelihoods of farmers in developing countries such as Ethiopia. MARPLE diagnostics puts state-of-the-art, rapid diagnostic results in the hands of those best placed to respond: researchers on the ground, local government and farmers.”
On-the-ground diagnostics
The MARPLE diagnostic kit is the first operational system in the world using nanopore sequence technology for rapid diagnostics and surveillance of complex fungal pathogens in the field.
In its initial work in Ethiopia, the suitcase-sized field test kit has positioned the country — one of the region’s top wheat producers — as a world leader in pathogen diagnostics and forecasting. Generating results within 48 hours of field sampling, the kit represents a revolution in plant disease diagnostics. Its use will have far-reaching implications for how plant health threats are identified and tracked into the future.
MARPLE is designed to run at a field site without constant electricity and with the varying temperatures of the field.
“This means we can truly take the lab to the field,” explained Saunders. “Perhaps more importantly though, it means that smaller, less-resourced labs can drive their own research without having to rely on a handful of large, well-resourced labs and sophisticated expertise in different countries.”
In a recent interview with JIC, EIAR Director Tadessa Daba said, “we want to see this project being used on the ground, to show farmers and the nation this technology works.”
The MARPLE team uses the diagnostic kit in Ethiopia. (Photo: JIC)
Development of the MARPLE diagnostic kit was funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and the CGIAR Platform for Big Data in Agriculture’s Inspire Challenge. Continued support is also provided by the BBSRC’s Excellence with Impact Award to the John Innes Centre and the Delivering Genetic Gain in Wheat project, led by Cornell University and funded by the UK’s Department for International Development (DFID) and the Bill & Melinda Gates Foundation.
Winners of the 2019 MAIZE Youth Innovators Awards – Africa receive their awards at the STMA meeting in Lusaka, Zambia. From left to right: Admire Shayanowako, Blessings Likagwa, Ismael Mayanja and Hildegarde Dukunde. Fifth awardee Mila Lokwa Giresse not pictured. (Photo: J.Bossuet/CIMMYT)
LUSAKA, Zambia (CIMMYT) – The CGIAR Research Program on Maize (MAIZE) officially announced the winners of the 2019 MAIZE Youth Innovators Awards – Africa at an awards ceremony held on May 9, 2019, in Lusaka, Zambia. These awards recognize the contributions of young women and men under 35 to innovation in African maize-based agri-food systems, including research for development, seed systems, agribusiness, and sustainable intensification. The awards, an initiative of MAIZE in collaboration with Young Professionals for Agricultural Research and Development (YPARD), were offered in three categories: farmer, change agent, and researcher.
The MAIZE Youth Innovators Awards aim to identify young innovators who can serve to inspire other young people to get involved in maize-based agri-food systems. This is the second year of the award, which was launched in 2018 with a first cohort of winners from Asia. Part of the vision is to create a global network of young innovators in maize based systems from around the world.
2019 award recipients were invited to attend the Stress Tolerant Maize for Africa (STMA) project meeting in Lusaka, May 7-9, where they had the opportunity to present their work. The project meeting and award ceremony also allowed these young innovators to network and exchange experiences with MAIZE researchers and partners. Looking forward, award recipients may also get the opportunity to collaborate with MAIZE and its partner scientists in Africa on implementing or furthering their innovations.
Dukunde is a graduate in Human Nutrition and serves as a Sales Associate for Agrifood Business Consulting Ltd. She has been at the forefront of preventing aflatoxin contamination in Rwanda by helping smallholder farmers to access low-cost post-harvest equipment, namely DryCard™ and Purdue Improved Crop Storage (PICS) bags. The DryCard™ is an inexpensive device developed by University of California Davis researchers for determining if dried food is dry enough to prevent mold growth and aflatoxin contamination during storage and reducing post-harvest losses.
Mila Lokwa Giresse (Democratic Republic of the Congo) – Category: Change Agent
Giresse is the CEO of Mobile Agribiz. This company develops the Mobile Agribiz App, an innovative tool to enhance the pest and disease diagnostics of fall armyworm in maize. It uses artificial intelligence and machine learning to easily detect the pest across maize crops at any stage of the production cycle. The app aims to assist farmers, extension workers, and agribusinesses in democratic republic of Congo with early detection and accurate diagnosis. Through SMS and smart alert notifications, the Mobile Agribiz App provides farmers with constant reminders and real-time information on how to detect, manage, and address fall armyworm on maize.
Blessings Likagwa (Malawi) – Category: Farmer
Likagwa lives in Mtunthama, Malawi, where he works on his family’s farm. From a young age he has had an interest in farming and for the past eight years he has been involved in growing a variety of crops, especially maize and cassava. In the future he hopes to use his bachelor’s degree in Community Development and his interest in technology to help smallholder farmers in Malawi and Eastern Africa adapt to the challenges of climate change and rapid population growth. Since 2018, in collaboration with UNICEF and Kyoto University, he has investigated how drone technology can improve agricultural performance and benefit Malawi’s smallholders.
Ismael Mayanja (Uganda) – Category: Researcher
Mayanja is a 2019 graduate of Makerere University with a Bachelor of Science degree in Agricultural Engineering. He is currently assisting research at Makerere University to ascertain and quantify post-harvest losses associated with transportation of agricultural produce in the markets of Kampala district, Uganda. His primary research interest lies in post-harvest handling and technology, motivated by the reported 40% post-harvest loss of agricultural produce by farmers in sub-Saharan Africa. He developed a bicycle-powered maize cleaning machine to increase efficiency and reduce time dedicated to cleaning maize at several primary schools in Uganda.
Admire Shayanowako (Republic of South Africa) – Category: Researcher
Shayanowako is a researcher at the African Centre for Crop Improvement (ACCI) – University KwaZulu-Natal. His research focuses on the parasitic weed Striga, also known as witch weed, which causes severe crop losses to millions of small-scale African maize farmers. The goal of the project is to combine breeding for Striga resistance in maize with a soil fungus, Fusarium oxysporum f.sp. strigae (FOS) that is highly specific in its pathogenicity to Striga and acts as a biological control agent. The breeding approach aims to develop at least partial host resistance in open pollinated maize germplasms that are adapted to the semi-arid regions. When partial host resistance is augmented with biological control agent FOS, parasitic effects of Striga decline overwhelmingly. Currently, the breeding component of the research has embarked on identification of quantitative trait locus (QTL) controlling Striga resistance in maize through genomic based approaches.
For further information, contact:
Jennifer Johnson
Communications Officer, CGIAR Research Program on Maize (MAIZE)
Telephone: +52 (55) 5804 2004 ext. 1036
Email: j.a.johnson@cgiar.org
