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Location: Africa

CIMMYT’s work in Africa helps farmers access new maize and wheat systems-based technologies, information and markets, raising incomes and enhancing crop resilience to drought and climate change. CIMMYT sets priorities in consultation with ministries of agriculture, seed companies, farming communities and other stakeholders in the maize and wheat value chains. Our activities in Africa are wide ranging and include: breeding maize for drought tolerance and low-fertility soils, and for resistance to insect pests, foliar diseases and parasitic weeds; sustainably intensifying production in maize- and wheat-based systems; and investigating opportunities to reduce micronutrient and protein malnutrition among women and young children.

Isaiah Nyagumbo

Written by Rodrigo Ordóñez on . Posted in Uncategorized.

Isaiah Nyagumbo is a cropping systems agronomist working with CIMMYT’s Sustainable Agrifood Systems (SAS) program. He is passionate about soil and water conservation technologies, and participatory technology development for farmers.

Prior to joining CIMMYT in 2010, he completed a DPhil on seasonal water balance in conservation tillage systems and spent several years working as a lecturer at the University of Zimbabwe.

As part of the SIMLESA team, he has mainly works on developing sustainable and resilient conservation agriculture-based production systems in southern Africa, where he is regional coordinator of agronomy activities.

Improved Maize for African Soils (IMAS)

Written by Mary Donovan on . Posted in Uncategorized.

African maize farmers must deal with drought, weeds, and pests, but their problems start with degraded, nutrient-starved soils and their inability to purchase enough nitrogen fertilizer. Maize yields of smallholder farmers in sub-Saharan Africa are a fraction of those in the developed world, due mainly to the region’s poor soils and farmers’ limited access to fertilizer or improved maize seed. On average, such farmers apply only 9 kilograms of fertilizer per hectare of cropland. Of that small amount, often less than half is captured by the crop; the rest is leached deep into the soil where plants cannot recover it or otherwise lost.

The Improved Maize for African Soils Project (IMAS) develops maize varieties that are better at capturing the small amount of fertilizer that African farmers can afford, and that use the nitrogen they take up more efficiently to produce grain. Project participants will use cutting-edge biotechnology tools such as molecular markers—DNA “signposts” for traits of interest—and transgenic approaches to develop varieties that ultimately yield 30 to 50 percent more than currently available varieties, with the same amount of nitrogen fertilizer applied or when grown on poorer soils.

The varieties developed will be made available royalty-free to seed companies that sell to the region’s smallholder farmers, meaning that the seed will become available to farmers at the same cost as other types of improved maize seed.

In four years or less, African farmers should have access to IMAS varieties developed using conventional breeding that offer a 20 percent yield advantage over current varieties. Improved varieties developed using DNA marker techniques are expected to be introduced within seven to nine years, and those containing transgenic traits are expected to be available in approximately 10 years, pending product performance and regulatory approvals by national regulatory and scientific authorities, according to the established laws and regulatory procedures in each country.

IMAS is being led by CIMMYT and funded with $19.5 million in grants from the Bill & Melinda Gates Foundation and the U.S. Agency for International Development. The project’s other partners — DuPont-Pioneer, Kenya Agricultural Livestock and Research Organization and the Agricultural Research Council of South Africa — are also providing significant in-kind contributions including staff, infrastructure, seed, traits, technology, training, and know-how.

The second phase of IMAS continues to be implemented through the Seed Production Technology for Africa (SPTA) project.

OBJECTIVES

  • Conventional and marker assisted breeding to develop hybrids and OPVs with improved nitrogen use efficiency (NUE) adapted to southern and eastern Africa
  • Identification and deployment of native trait alleles to enhance yield under low nitrogen conditions through association mapping and Quantitative Trait Loci mapping
  • Development of transgenic maize varieties adapted to southern and eastern Africa with increased yield under severe nitrogen limitation
  • Managing NUE varieties for sustainability in African maize cropping systems
  • Project stewardship, public awareness and capacity building
  • NUE variety registration, release and dissemination in southern and eastern Africa

Ethiopia Wheat Rust Scaling

Written by Courtney Brantley on . Posted in Uncategorized.

Wheat is a traditional crop cultivated by about five million households on 1.6 million hectares in Ethiopia. Despite the country’s huge potential, the average wheat productivity of 2.5 tonnes per hectare is lower than the global average of 3 tonnes per hectare. Stem rust and yellow rust diseases caused by Pucccinia spp. are the major biotic constraints for wheat production in the country and recent recurrent outbreaks have debilitated many wheat varieties in major production areas in Ethiopia.

Projects to accelerate seed multiplication of rust resistant varieties funded by the U.S. Agency for International Development, the Bill & Melinda Gates Foundation and others contributed to the replacement of the widely grown susceptible varieties Kubsa and Galama. However, in 2013–2014, a new Pgt race, identified as TKTTF, unrelated to the highly virulent Ug99 rust disease, which is also present in Ethiopia, caused 100 percent yield losses on bread wheat variety Digalu in some regions.

The Ethiopia Wheat Rust Scaling seed and surveillance project aims to develop, demonstrate and scale up high-yielding wheat varieties with adult plant resistance to prevailing rust pathogens with the following objectives: enhancement of rust surveillance; early warning and phenotyping; fast-track variety testing and pre-release seed multiplication to assure availability of rust resistant improved wheat varieties for distribution in targeted districts; accelerating seed multiplication of durable rust resistant wheat varieties through the formal and informal seed systems; demonstration and scaling up of improved wheat varieties and improving linkages between small scale durum wheat producers and agro-industries with the aim of creating market access to smallholder durum wheat producers.

The project includes conducting wheat rust surveys, training and field days. Farmer cooperative unions are being organized in clusters and women and youth groups will participate in informal seed production. The number of private seed enterprises and women farmers participating in the accelerated informal seed multiplication program will be increased as the project progresses in consultation with stakeholders.

CIMMYT worked with the Durable Rust Resistance in Wheat project to import of 5 tons of stem rust resistant bread wheat variety “Kingbird” and the U.S. Department of Agriculture Cereal Disease Laboratory, the University of Minnesota and Washington State University in phenotyping and genotyping of commercial cultivars and elite materials from the national wheat research program, respectively.

Objectives

  • Enhancement of rust surveillance, early warning and phenotyping.
  • Fast-track variety testing and pre-release seed multiplication to assure availability of rust resistant improved wheat varieties for distribution in targeted districts.
  • Accelerating seed multiplication of durable rust resistant wheat varieties through the formal and informal seed systems.
  • Demonstration and scaling up of improved wheat varieties.
  • Improving linkages between small scale durum wheat producers and agro-industries with the aim of creating market access to smallholder durum wheat producers in 10 districts.

Farm Mechanization and Conservation Agriculture for Sustainable Intensification (FACASI)

Written by Mary Donovan on . Posted in Uncategorized.

Agricultural intensification is both a need and an opportunity for countries in sub-Sahara Africa. For intensification to occur sustainably — with minimum negative environmental and social consequences — it is widely recognized that resources must be used with much greater efficiency. Although much emphasis is being placed in current research for development work on increasing the efficiency with which land, water and nutrients are being used, farm power appears as the “forgotten resource.” However, farm power in countries sub-Saharan Africa is declining due to the collapse of most hire tractor schemes, the decline in number of draft animals and the decline in human labor related to rural-urban migration. Another aspect of low farm power is high labor drudgery, which affects women, who generally due the majority of threshing, shelling and transport by head-loadings, disproportionally. Undoubtedly, sustainable intensification in these countries will require an improvement of farm-power balance through increased power supply — via improved access to mechanization — and/or reduced power demand – via energy saving technologies such as conservation agriculture techniques.

The Farm Mechanization and Conservation Agriculture for Sustainable Intensification project examines how best to exploit synergies between small-scale-mechanization and conservation agriculture. The overall goal of the project is to improve farm power balance, reduce labour drudgery, and minimize biomass trade-offs in Eastern and Southern Africa, through accelerated delivery and adoption of two-wheel-tractor-based technologies by smallholders.

This project is now in the second phase, which began on June 1, 2017.

OBJECTIVES

  • To evaluate and demonstrate two wheel tractor-based technologies in the four selected sites of Eastern and Southern Africa, using expertise/knowledge/skills/implements from Africa, South Asia and Australia
  • To test site-specific market systems to deliver two wheel tractor-based mechanization in the four countries
  • To identify improvements in national markets and policies for wide delivery of two wheel tractor-based mechanization
  • To create awareness on two wheel tractor-based technologies in the sub-region and share knowledge and information with other regions

Water Efficient Maize for Africa (WEMA)

Written by Mary Donovan on . Posted in Uncategorized.

The Water Efficient Maize for Africa partnership was launched in March 2008 to help farmers manage the risk of drought by developing and deploying maize varieties that yield 24 to 35 percent more grain under moderate drought conditions than currently available varieties. The higher and more reliable harvests will help farmers to feed their families and increase their incomes.

The varieties are being developed using conventional breeding, marker-assisted breeding, and biotechnology, and will be marketed royalty-free to smallholder farmers in Sub-Saharan Africa through African seed companies. The current, second phase of the project (2013–2017) includes breeding for resistance to stem borers—insect pests that seriously damage maize crops in the field—as well as product and production management, promotion with seed companies and farmers, and product stewardship activities.

The project focuses on Kenya, Mozambique, South Africa, Tanzania, Uganda, Zambia and Zimbabwe. The second phase of the project began on February 1, 2013.

OBJECTIVES

  • Product development. Develop and test drought tolerant and and insect-pest resistant maize varieties through conventional, molecular, and genetic engineering breeding approaches.
  • Regulatory affairs and compliance. Support multi-location testing and commercial release of drought tolerant and insect-pest resistant maize hybrids in the Water Efficient Maize for Africa partner countries.
  • Product deployment: Product and production management. Facilitate the marketing and stewardship of drought tolerant and insect-pest resistant hybrid maize seeds, and stimulate private sector investments for sustainable seed production, distribution and us
  • Communications and outreach. Support testing, dissemination, commercialization, adoption, and stewardship of conventional and transgenic drought tolerant and insect-pest resistant hybrids in the five target countries.
  • Legal and licensing support. Develop and implement appropriate licensing and intellectual property protection mechanisms for Water Efficient Maize for Africa products.

FUNDING INSTITUTIONS

  • Bill & Melinda Gates Foundation
  • Howard G. Buffett Foundation
  • U.S. Agency for International Development

PRINCIPAL COORDINATOR

Stephen Mugo

Thokozile Ndhlela (first from right) shares advances in provitamin A maize breeding in Zimbabwe. (Photo: Shiela Chikulo/CIMMYT)

What’s new in southern Africa?  

Written by Shiela Chikulo on . Posted in News.

The director of Zimbabwe's Department of Research and Specialist Services, Cames Mguni, gives official remarks during the CIMMYT field day. (Photo: Catherine Magada/CIMMYT)
The director of Zimbabwe’s Department of Research and Specialist Services, Cames Mguni, gives official remarks during the CIMMYT field day. (Photo: Catherine Magada/CIMMYT)

On March 14, 2019, over 200 of the International Maize and Wheat Improvement Center’s (CIMMYT) partners in southern Africa, including national research organisations, private seed companies and funders, attended the annual partners field day in Harare, Zimbabwe.

“For the last 34 years, CIMMYT’s regional office has expanded its research work, from maize breeding to sustainable cropping practices and recently appropriate mechanization and post-harvest,’’ said Cames Mguni, Director of Zimbabwe’s Department of Research and Specialist Services. “The development of drought and heat tolerant maize varieties helps farmers get better yields and cope better during drought years such as the current 2018/19 season.”

Elijah Nyabadza, Dean of the University of Zimbabwe’s Faculty of Agriculture, highlighted the strong collaboration between the University and CIMMYT in conducting joint research and building cutting-edge skills of the next generation of agricultural scientists and practitioners in the region.

Welthungerhilfe country director Regina Feindt said the partner field day was ‘’a very valuable experience and a great opportunity to gain technical know-how and exchange with colleagues across the region.’’

CIMMYT showcases research impact

At the event, CIMMYT country representative for Zimbabwe Cosmos Magorokosho walked partners through breeding lines that include special lines testing for resistance to diseases such as fall armyworm, maize streak virus and weevil. Maize breeder Amsal Tarekegne explained how, in product development, various inbred lines are combined to create new hybrids. These new hybrids, added seed systems specialist Peter Setimela, are made available to smallholder farmers for performance testing for stress tolerance and nutritional traits under different environments before being released to seed companies for multiplication.

Two Zimbabwean seed companies present at the field day highlighted the benefits of collaboration with CIMMYT. Chrispen Nyamuda, an agronomist from Zadzamatura seed company, explained that many varieties popular with farmers, which are heat-tolerant and resistant to diseases like maize streak virus and grey leaf spot disease, were developed thanks to their collaboration with CIMMYT. Another partner from Mukushi Seeds described the working partnership with CIMMYT as mutually beneficial. “We exchange lines, plant in different environments and share the results,” he explained. “We are also tapping germplasm from the world through CIMMYT’s global reach.”

Mainassara Zaman-Allah and Jill Cairns, CIMMYT’s high throughput phenotyping experts, elaborated on how cost-effective remote sensing technologies significantly reduce costs for screening for specific traits and assessing the potential extent of damage caused by pests such as fall armyworm.

Over the last couple of years, CIMMYT has intensified maize breeding efforts aimed at improving the nutritional value of maize, particularly higher content in provitamin A and better quality protein. Maize breeder Thokozile Ndhlela explained that more than 15 new hybrids with higher levels of provitamin A have been released in southern Africa, including five in Zimbabwe.

Thokozile Ndhlela (first from right) shares advances in provitamin A maize breeding in Zimbabwe. (Photo: Shiela Chikulo/CIMMYT)
Thokozile Ndhlela (first from right) shares advances in provitamin A maize breeding in Zimbabwe. (Photo: Shiela Chikulo/CIMMYT)

Agronomists Christian Thierfelder and Isaiah Nyagumbo shared some conservation agriculture techniques adopted by smallholder farmers. Farmers can realize better yields and improve their climate resilience by combining conservation agriculture principles such as minimum soil disturbance, crop rotation and soil cover, with use of stress tolerant maize varieties, appropriate mechanization and other complementary practices. Frederic Baudron, who leads the Farm Mechanization and Conservation Agriculture for Sustainable Intensification (FACASI) initiative, explained how small mechanization like two-wheel planters could address labour shortages, reduce drudgery and generate opportunities for rural youth. Significant drudgery reductions have already been observed in wheat planting in Rwanda, and in post-harvest operations like shelling and threshing in Ethiopia and Zimbabwe.

CIMMYT researcher Isaiah Nyagumbo explains conservation agriculture techniques during the annual partners field day. (Photo: Catherin Magada/CIMMYT)
CIMMYT researcher Isaiah Nyagumbo explains conservation agriculture techniques during the annual partners field day. (Photo: Catherin Magada/CIMMYT)

The International Maize Improvement Consortium one year on

Following the annual partners field day, members of the International Maize Improvement Consortium (IMIC) held a field day to select varieties from the IMIC Southern Africa demo plot, which carries a wider selection of materials. Launched in May 2018, IMIC is a public-private partnership initiative established as part of CIMMYT’s mission to increase seed breeding and production innovations.

Participating IMIC members came from seed companies based in Angola, Egypt, Ethiopia, Kenya, Nigeria, Tanzania, Uganda, Zambia and Zimbabwe. At the field day, they were advised by research associate Obert Randi on the layout of the demonstrations for materials under development for different traits, resilience to fall armyworm and maize streak virus, materials improved for vitamin A and quality protein and stress tolerant lines.

After going through the selections, participating IMIC members proceeded to the Quarantine Facility in Mazoe, where they explored around 2,300 double haploid lines undergoing screening maize lethal necrosis (MLN) as well as multiplication for distribution to non-MLN prevalent countries.

The final part of the field day provided space for the members to share research learnings and input on how to move the consortium forward. The field day concluded with an inaugural meeting of the steering committee chaired by CIMMYT regional representative for Africa Stephen Mugo, where participants discussed a number of issues including membership, procedures for conducting field days, training and research prioritization.

Both field days offered an opportunity to highlight the extended impact of CIMMYT’s research in southern Africa through strong partnerships and commitment to research on maize breeding, sustainable farming practices, mechanization and socio-economic impacts of all programming.

Tawanda Mashonganyika

Breaking Ground: Tawanda Mashonganyika unites crop breeders and market experts for more impactful varieties

Written by Sam Storr on . Posted in Features.

Tawanda Mashonganyika

The low rate at which farmers adopt improved varieties is one of the biggest obstacles to overcoming food insecurity. The average maize variety grown by farmers in sub-Saharan Africa is 15 years old, even though maize breeders have been releasing more than 50 new varieties every year.

When it comes to climate change, for example, thanks to a plentiful arsenal of genetic diversity crop breeders are developing varieties adapted to increased heat and drought, but farmers continue to grow crops developed for the climate of yesterday.

One part of the answer is that it is not enough merely to create a variety resistant to heat, drought or flooding; complex dynamics are at play in crop markets and in farmers’ fields that must be reflected in the design of new varieties.

This where product manager Tawanda Mashonganyika comes in, working for the CGIAR Excellence in Breeding Platform (EiB) out of CIMMYT-Kenya, and one of the first to occupy such a role in the CGIAR system.

“This position is supposed to bring in a business kind of thinking in the way products and varieties are developed,” said Mashonganyika, who studied agricultural economics, agribusiness and value chains at the universities of Reading, U.K. and Queensland, Australia, and has professional experience with crops grown in Africa.

“You need to know who you are developing varieties for, who are your customers and clients, and you also need to design products so that they can have success on the market.”

Mashonganyika’s role is to support CGIAR and national agricultural research system (NARS) breeders to design new varieties focused on replacing older products in a specific market, as opposed to only breeding for an agro-ecological zone. Key to this approach is the involvement of experts from other disciplines such as gender, socioeconomics and nutrition, as well as people involved in the value chain itself, such as food processors, seed producers and farmers.

The outcome of this collaboration is a product profile: a written description of a new product with all the traits needed to replace the variety that currently dominates the target market. The profile serves as a common goal for CGIAR and NARS collaboration, and as a tool to communicate with donors. With the breeding program accountable for delivering a pipeline of new products designed for impact, they can ensure that these varieties also deliver traits such as biofortification to farmer’s fields.

Instead of breeding for all the traits that may be desirable in a new variety, what sets the product profile approach apart is that breeding programs can then focus resources on the traits that will have the greatest impact in the market, and therefore the field. This market-focused approach also enables better collaboration between breeders and experts from other disciplines:

“When you bring a cross-functional team together, you really need to give them an understanding of the desired goal of what we want to design and eventually put onto the market,” said Mashonganyika. “We put an emphasis on data-driven decisions, so it is not just a meeting of experts with different opinions; we always try to create a platform to say ‘we need to follow what the market is saying.’”

“[Non-breeding experts] are usually very excited to talk about the data that they have about markets, and the knowledge that they have about how gender or nutrition affects products on the market,” said Mashonganyika. “There are so many women farmers, especially in Africa, so when you begin to incorporate gender, we are increasing the scope of impact.”

Although actors such as seed producers or food processors may have no breeding expertise, Mashonganyika views their input as essential: “They are the ones that are at the mouthpiece of the market, they eventually take up the varieties and they multiply the seed, so they have very good information.”

One example is a collaboration with the National Agricultural Research Organization (NARO), Uganda, where representatives from private sector seed companies are being included to help breeders better understand their customers. “They give information about seed multiplication processes, and what makes a variety be considered for multiplication in seed systems.”

EiB has created a standardized tool to create product profiles, and 200 were submitted to the growing database in the first three months of the pilot period alone, including profiles submitted by 10 national agricultural research programs in Africa and Asia.

In addition to promoting the use of product profiles, a product manager is also involved ensuring communication and accountability throughout the development of new products.

“With product profiles we say a breeder should be accountable for delivering each product in a certain timeframe,” said Tawanda. “We always emphasize that a breeding program should have an annual product review process, because markets are dynamic, they are bound to change. This is a good habit to ensure that your products remain relevant and designed for impact.”

Although Mashonganyika is one of the first CGIAR product managers, a desire to see greater impact in the field is turning others in the same direction.

“I hope that in the near future we will see other CGIAR centers developing similar positions,” said Mashonganyika.

Taking Maize Agronomy to Scale in Africa (TAMASA)

Written by Rodrigo Ordóñez on . Posted in Uncategorized.

Taking Maize Agronomy to Scale in Africa (TAMASA) is a 4-year project seeking to improve productivity and profitability for small-scale maize farmers in Ethiopia, Nigeria and Tanzania.

The overall purpose of TAMASA is to use innovative approaches to transform agronomy that:

  • Use available geospatial and other data and analytics to map maize areas, soil constraints, and actual and yields at different scale.
  • Work with service providers (i.e. input suppliers, government and private research and extension services, agro-dealers, and others) to identify and co-develop systems and applications that transform this data and information to useable products that support their businesses or programs to reach clients more effectively
  • Build capacity in national programs to support and sustain these approaches.

The core products and services of this project include:

  • Annual assessments and digital maps of maize growing areas, actual and attainable yields in core research areas or focal areas.
  • Decision-support tools for ex-ante spatial analysis, nutrient management, fertilizer formulation and variety selection.
  • Open-access databases of agronomic data.
  • Increased capacity in national programs and partners through in-country data science and software application training and mentoring.
Profitability under different fertilization recommendation scenarios in Ethiopia and Tanzania, measured in U.S. dollars per hectare.

How the data revolution could help design better agronomic investments

Written by JĂ©rĂŽme Bossuet on . Posted in Features.

Profitability under different fertilization recommendation scenarios in Ethiopia and Tanzania, measured in U.S. dollars per hectare.
Profitability under different fertilization recommendation scenarios in Ethiopia and Tanzania, measured in U.S. dollars per hectare.

What fertilizer application will give me the best returns? What maize crop variety should I use?

Each farmer faces constraints related to weather uncertainty, soil fertility management challenges, or access to finance and markets. To improve their yields and incomes, African smallholder farmers need agronomic advice adapted to their specific circumstances. The challenge is even greater in sub-Saharan Africa, where agricultural production landscapes are highly diverse. Yet traditional agronomic research was not designed to fit with complex agroecological regions and farming systems. Compounding the problem, research organizations often have limited resources to develop the necessary experiments to generate farm- and site-specific agronomic advice at scale.

“Agronomic research is traditionally not equipped to consider spatial or socio-economic diversity among the millions of farmers it targets,” said Sebastian Palmas, data scientist at the International Maize and Wheat Improvement Center (CIMMYT) in Nairobi, Kenya.

Palmas presented some of the learnings of the Taking Maize Agronomy to Scale in Africa (TAMASA) project during a science seminar called “A spatial ex ante framework for guiding agronomic investments in sub-Saharan Africa” on March, 4, 2019.

The project, funded by the Bill & Melinda Gates Foundation, has used data to improve the way agronomic research for development is done. Researchers working on the TAMASA project addressed this challenge by using available geospatial information and other big data resources, along with new data science tools such as machine learning and Microsoft’s AI for Earth. They were able to produce and package information that can help farmers, research institutions and governments take better decisions on what agronomic practices and investments will give them the best returns.

By adapting the Quantitative Evaluation of the Fertility of Tropical Soils (QUEFTS) model to the conditions of small farmers in TAMASA target countries (Ethiopia, Nigeria and Tanzania), using different layers of information, CIMMYT and its partners have developed a versatile geospatial tool for evaluating crop yield responses to fertilizer applications in different areas of a given country. Because calculations integrate spatial variation of fertilizer and grain prices, the tool evaluates the profitability — a key factor influencing farmers’ fertilizer usage — for each location. The project team can generate maps that show, for instance, the estimated agronomic and economic returns to different fertilizer application scenarios.

The TAMASA team plans to publish the code and user-friendly interface of this new geospatial assessment tool later this year. (Photo: CIMMYT)
The TAMASA team plans to publish the code and user-friendly interface of this new geospatial assessment tool later this year. (Photo: CIMMYT)

Making profits grow

These tools could potentially help national fertilizer subsidy programs be more targeted and impactful, like the ambitious Ethiopia’s Fertilizer Blending initiative which distributes up to 250,000 tons of fertilizer annually. Initial calculations showed that, by optimizing diammonium phosphate (DAP) and urea application, the profitability per hectare could improve by 14 percent on average, compared to the current fertilizer recommendations.

Such an approach could generate farm-specific advice at scale and boost farmers’ incomes. It could also provide insights on many different issues, like estimating market demand for a new fertilizer blend, or the estimated quantity of additional fertilizer required to bring about a targeted maize yield increase.

Future extensions of the framework may incorporate varietal differences in nutrient management responses, and thus enable seed companies to use the framework to predict where a new maize hybrid would perform best. Similarly, crop breeders could adapt this ex ante assessment tool to weigh the pros and cons of a specific trait and the potential impact for farmers.

The TAMASA team plans to publish the code and user-friendly interface of this new geospatial assessment tool later this year.

Maize Doubled Haploid Production Services

Written by Rodrigo Ordóñez on . Posted in Uncategorized.

CIMMYT provides a maize doubled haploid (DH) production service at cost to maize breeding programs in Africa and Latin America at its DH facilities in Kenya and Mexico.

This service reduces the time required to develop homozygous maize lines to just over one year, instead of three to seven years using more traditional inbreeding methods. This technology also results in better-quality maize lines: DH maize lines are 100% homozygous, whereas traditional inbreeding generates lines with only approximately 99.2% homozygosity. These advantages help breeders increase their rate of genetic gain: the rate at which the genetic potential of a crop increases in yield over time.

CIMMYT established centralized DH line production facilities for Africa at KALRO-Kiboko, Kenya. A similar facility is also in operation for Latin America at CIMMYT’s experimental station in Agua Fría, Mexico. Public and private sector organizations involved in maize breeding can access the DH production service by signing a DH service agreement.

A non-pollen-producing plant (on the left) on a farm trial in Zimbabwe. (Photo: Jill Cairns/CIMMYT)

Seed Production Technology for Africa (SPTA)

Written by Rodrigo Ordóñez on . Posted in Uncategorized.

The Seed Production Technology for Africa (SPTA) project is working to implement an advanced seed production system in Africa for the benefit of smallholder farmers in sub-Saharan Africa.

Hybrids are maize varieties in which the seed is produced by crossing two different parent lines, increasing the yield through heterosis. In hybrid maize seed production, the pollen-producing tassel must be removed on female parent plants to avoid self-pollination. If detasselling is not done in a timely and accurate way, pollen from the female plants can pollinate the ears, causing contamination and reduced seed quality. Currently, African seed production actors prevent self-fertilization during certified seed production by manual detasselling. This process requires considerable time and labor and reduces seed yield potential of the detasselled seed-bearing plants (female plants).

The Seed Production Technology for Africa (SPTA) project was launched to improve access for smallholders to high quality seed of modern maize varieties. The project targets small and medium seed production companies in the region to strengthen their capacity to produce high quality hybrid maize more efficiently, and at reduced cost. These modern hybrids will improve yield in drought prone and low fertility production conditions that are common among resource-constrained African smallholders, particularly those that are not able to access adequate fertilizers.

SPTA efforts will contribute to a more vibrant private seed sector by providing higher quality hybrid seed using a technology that fits well within existing production systems of small and medium enterprise seed companies. This will help to improve productivity gains for smallholder farmers and ease the burden on public funding for development.

The SPTA project originated from the Improved Maize for African Soils (IMAS) project that concluded in 2015. IMAS focused on developing maize hybrids that could use nitrogen fertilizer more efficiently to deliver higher yields under low fertility conditions.

How SPTA works

This project seeks to introduce a proprietary SPTA process that eliminates the detasselling step by utilizing a mutation in the naturally occurring maize gene – Ms44 – that aborts the development of microspores into pollen to create female parent plants that are male-sterile, eliminating the need to manually remove the pollen-producing tassels.

The cross-pollination between this female parent and the male parent is therefore more reliable, efficient, and cost effective. Importantly, whilst the SPTA process utilizes a transgenic maintainer line, no transgene will be present in the single cross production, three-way hybrid production, or the final hybrid seed, sold to farmers. The benefit of SPTA is that it works across genetic backgrounds, unlike cytoplasmic male sterility (CMS). An additional benefit of SPTA is hybrids produced using this technology yield 200 kg ha-1 more as a result of conserving resources for grain production.

Collaboration between Pioneer Hi-Bred International, Inc. (an affiliate of Corteva Agriscience) (Corteva), Agricultural Research Council of South Africa (ARC), Kenyan Agriculture and Livestock Research Organization (KALRO), Qualibasic Seed Company Limited (QBS) and CIMMYT

The SPTA project which is funded by the Bill & Melinda Gates Foundation originated from the Improved Maize for African Soils (IMAS) project that concluded in 2015, where the focus was on developing maize hybrids that could use nitrogen fertilizer more efficiently to deliver higher yields under low fertility conditions. The overall objectives of the project are to:

  • Improve the grain yield potential of stress tolerant maize hybrids in low fertility environments.
  • Develop a new hybrid production platform capable of producing sufficient early generation seed to support production of high-quality certified seed each year.
  • Simplify hybrid maize seed production in sub-Saharan Africa.

Objectives

  • Improve the grain yield potential of stress tolerant maize hybrids in low fertility environments.
  • Develop a new hybrid production platform capable of producing sufficient early generation seed to support production of high quality certified seed each year.
  • Reduce the production costs of seed partners in the sub-Saharan region.

The SPTA concept was confirmed suitable for tropical environments in Kenya, Zimbabwe, and South Africa in the first phase of the project (2017-2022). The current phase (2022-2024) is working towards licensing of the homozygous Ms44 seed to seed companies serving smallholder farmers in Africa. Eventually, the proprietary SPTA Maintainer Event and SPTA process will be licensed royalty-free by Corteva for further sublicensing in the production of SPTA Ms44 Maize in sub-Saharan Africa.

Ms44 and the SPTA Maintainer are introgressed into African-bred germplasm to produce male-sterile female parents (INP) suitable for low-nitrogen and drought environments in Africa. The commercial production of the INP will be carried out by QBS in South Africa after it has achieved full Excellence Through Stewardship (ETS) recognition and executed a royalty-free license agreement for the SPTA Maintainer Event with Corteva.

Seed companies will apply for release/registration and commercialize SPTA Ms44 maize only in sub-Saharan African countries that have acknowledged SPTA Ms44 maize as non-transgenic for the SPTA Maintainer Event. To produce and commercialize SPTA Ms44 maize, seed producers will have to access INP seeds from QBS and agree to implement all stewardship and management practices related to the use of SPTA Ms44 maize. Since the availability of SPTA Ms44 maize will be restricted this way, a percentage of its sales may be required to be paid into the FAO trust fund established by the Governing Body of the International Treaty on Plant Genetic Resources for Food and Agriculture.

 

Documents

SPTA project brief – Overview (updated November 2023)

SPTA project brief – Seed Production Technology for Africa: Efficient Seed Production Process for SMEs in Africa (updated November 2023)

SPTA project brief – Seed Production Technology for Africa: Modern and Pure Hybrids for African Farmers (updated November 2023)

A researcher holds two plants to show the pollen-producing (left) and non-pollen producing plants (right) at a research station in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
A researcher holds two plants to show the pollen-producing (left) and non-pollen producing plants (right) at a research station in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
Smallholder farmers evaluate Ms44 hybrids in Embu, Kenya. (Photo: Mike Ndegwa/CIMMYT)
Smallholder farmers evaluate Ms44 hybrids in Embu, Kenya. (Photo: Mike Ndegwa/CIMMYT)
Two smallholder farmers evaluate Ms44 hybrids during an on-farm evaluation in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
Two smallholder farmers evaluate Ms44 hybrids during an on-farm evaluation in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
Farmer Edma Shanguri holds a harvest of Ms44 hybrids from an on-farm trial in Murewa, Zimbabwe. (Photo: J. Cairns/CIMMYT)
Farmer Edma Shanguri holds a harvest of Ms44 hybrids from an on-farm trial in Murewa, Zimbabwe. (Photo: J. Cairns/CIMMYT)
Smallholder farmers evaluate Ms44 hybrids in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
Smallholder farmers evaluate Ms44 hybrids in Embu, Kenya. (Photo: Hugo De Groote/CIMMYT)
A farmer holds a cob from a Ms44 hybrid during on-farm evaluations in Kakamega, Kenya. (Photo: Virginia Ndungu/KALRO)
A farmer holds a cob from a Ms44 hybrid during on-farm evaluations in Kakamega, Kenya. (Photo: Virginia Ndungu/KALRO)
Smallholder farmers remove kernels from cobs during an on-farm evaluation of Ms44 hybrids in Kakamega, Kenya. (Photo: Virginia Ndungu/KALRO)
Smallholder farmers remove kernels from cobs during an on-farm evaluation of Ms44 hybrids in Kakamega, Kenya. (Photo: Virginia Ndungu/KALRO)
A non-pollen-producing plant (on the left) on a farm trial in Zimbabwe. (Photo: Jill Cairns/CIMMYT)
A non-pollen-producing plant (on the left) on a farm trial in Zimbabwe. (Photo: Jill Cairns/CIMMYT)

Maize Lethal Necrosis Phenotyping Service

Written by Rodrigo Ordóñez on . Posted in Uncategorized.

The CIMMYT-Kenya Agriculture and Livestock Research Organization (KALRO) Maize Lethal Necrosis (MLN) Screening Facility quarantine site is used to provide an MLN Phenotyping Service at cost to national agricultural research systems and seed companies in Africa.

KALRO and CIMMYT have been screening germplasm against MLN in Kenya since Nov 2012. The dedicated screening facility at KALRO Naivasha was established in 2013. This facility now represents a high quality phenotyping platform, permitting large-scale screening of germplasm from regional public and private partners.

To date, close to 90 percent of materials screened at Naivasha are susceptible under artificial inoculation. However, resistant and tolerant materials have been identified. Four first-generation MLN tolerant and resistant hybrids have been released in East Africa and a further 15-20 second generation hybrids are at advanced stages of testing.