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Shaping a CIMMYT maize program to serve at-risk farmers: A tribute to Ernest W. Sprague (1925-2025)

Written by Mike Listman on . Posted in News.

Photo caption: Ernest W. Sprague, director of CIMMYT’s maize program during 1970-1983 (Photo: CIMMYT)

Architect of CIMMYT maize research during the 1970s, Ernest W. Sprague pulled together a coherent global program from diverse regional and country initiatives in Latin America, Asia, and eastern Africa, building partnerships with national maize research programs to serve smallholder farmers.

On 25 February, Ernest W. Sprague, who served as Maize Program Director at CIMMYT from 1970 to 1983, passed away at the age of 100.

Sprague led the development and adoption of systematic approaches for breeding improved maize populations adapted to the tropics and subtropics, including the international testing of varieties and crosses at scale.

After leading the Inter-Asian Corn Program established by the Rockefeller Foundation in Thailand in 1966, Sprague joined CIMMYT, where he vigorously championed the role of open-pollinated maize varieties (OPVs) for smallholder farmers in rain-fed maize cropping areas. These farmers often faced diseases, pests, and drought and lacked access to or could not afford hybrid seed or large quantities of fertilizer.

OPVs generally yield less grain than maize hybrids but are often preferred by smallholders for their suitability in local foods. They can also be grown by saving and sowing seed from previous harvests without sacrificing yield or other qualities—a problem that arises when grain harvested from hybrids is replanted.

In Thailand, Sprague had witnessed a thriving maize sector powered by the widespread adoption of an improved OPV known as “Suwan 1.” Conversely, he believed that hybrid seed systems designed to serve small-scale farmers were lagging in many other countries where CIMMYT worked.

“From the late 1980s, CIMMYT has worked successfully to develop and share hundreds of maize inbred lines—parents for high-yielding hybrids that feature farmer-preferred traits—as well as supporting and partnering with competitive private seed sector companies that truly benefit smallholder maize farmers,” said Bram Govaerts, CIMMYT Director General. “Still, population improvement in the OPV breeding program under Sprague’s leadership clearly contributed to the success of CIMMYT’s hybrid research by increasing the average performance of lines extracted from those populations.”

In addition, much of CIMMYT’s research on hybrid breeding for tropical maize in the 1980s and 1990s was led by Surinder K. Vasal, an Indian maize scientist brought to CIMMYT by Sprague.

Vasal’s pre-biotech research, together with CIMMYT cereal chemist Evangelina Villegas, led to the development of quality protein maize (QPM), whose grain contains enhanced levels of two amino acids essential for human protein synthesis. This groundbreaking work—initiated by Sprague—was recognized with their joint reception of the 2000 World Food Prize.

Building up partners and partnerships

Sprague was a strong proponent of in-service training at CIMMYT headquarters in Mexico for young researchers from partner countries. These courses were formally organized and scaled up in the early 1970s as a major component of CIMMYT’s maize program. Participants worked for several months within the main breeding or production programs, usually in the lowland tropics of Mexico, gaining hands-on skills in the field through activities such as laying out on-farm trials, selecting germplasm, making crosses, and evaluating results. By 1982, the program had graduated 650 maize scientists from 61 countries. Many alumni rose to influential positions in national programs or the private sector, thereby strengthening regional cooperative maize research networks.

“Ernie was my boss when I first arrived as a postdoc to CIMMYT in 1976, and I was always amazed at his commitment to high-quality field work,” said Greg Edmeades, a maize physiologist whose research accomplishments included methods to select for drought tolerance in maize. “I will always remember Ernie as a friend and a great supporter of the task we faced in Ghana, where I worked as a maize agronomist and lived with my family during 1979–84. He thought often of the challenges that we as a family faced with frequent water and power cuts and generously provided support. I was always amazed at his stamina and his capacity to survive and keep fit and well on black coffee alone in the mornings and no major meal until evening.

“Sprague’s contributions to CIMMYT were significant. The setting up of the international testing system was his baby and a masterpiece in getting CIMMYT germplasm out to national programs. He elevated the status of national programs in all sorts of ways, not the least of which was training.”

The CIMMYT global community joins in remembering Ernie Sprague and extends heartfelt condolences to his family.

Colombia moves toward a more sustainable agriculture with the Hub methodology

Written by dmedina on . Posted in News.

In Colombia, the path towards a more sustainable and resilient agriculture is gaining unprecedented momentum. Thanks to the implementation of the Sustainable Agrifood Colombia project, various national and international institutions are collaborating to strengthen food security and agricultural productivity through technological innovations and knowledge management models. Among these collaborations is the Hub methodology, an innovation management model developed in Mexico by CIMMYT, in conjunction with various stakeholders, which is already being successfully replicated in Guatemala, Honduras, and several African countries.

Researchers from CIMMYT engage in dialogue with Colombian technicians and producers (Photo: Sustainable Agrifood Colombia)

The project, coordinated by the Bioversity & CIAT Alliance, has 18 strategic partners for its execution, among which Agrosavia, CIMMYT, and Fenalce contribute to the maize production system. The objective is to transform the Colombian agri-food sector through the adoption of sustainable agricultural technologies and the strengthening of collaboration networks among producers, researchers, and other key stakeholders.

To this end, pilot regions have been identified where the Hub methodology is implemented, promoting knowledge sharing, validation of innovative practices, and capacity building.

The project articulation meetings and field visits were held in Colombia’s main corn-producing regions: northern Valle del Cauca, Tolima, and Córdoba. During these visits, teams from the Bioversity & CIAT Alliance, AGROSAVIA, Fenalce, and CIMMYT evaluated production conditions, identified strengths and areas of opportunity, and designed strategies for consolidating the innovation territories.

One of the most significant results of these evaluations was the definition of a training plan for producers, researchers, and technicians. This plan, which has already taken its first steps, seeks to provide local stakeholders with tools to improve maize crop yields through sustainable agronomic practices, pest management, and seed conservation.

In November, three workshops were held in different regions of the country. The first two were held in La Unión, Valle del Cauca, and in Montería, Córdoba, with the aim of identifying and involving key stakeholders in the maize production system. The third, held in Vereda Nueva Platanera, Tierralta, Córdoba, focused on seed production and conservation for small producers. Based on these events, a mapping of actors was carried out in order to analyze the interactions within the maize production network. This exercise made it possible to evaluate the degree of innovation adopted by farmers and the influence of different actors, such as technicians, companies, universities, and government institutions, in the dissemination of knowledge and the adoption of sustainable technologies.

The results of these workshops have been encouraging. To date, 220 people have been trained on key issues such as pest management (particularly Dalbulus maydis, which has recently been a serious problem), seed production and conservation, and climate change adaptation strategies. In addition, stakeholder mapping has facilitated the identification of opportunities to strengthen collaborative networks and promote the adoption of innovations in the production system.

One of the key lessons learned has been the importance of constant monitoring in the implementation of sustainable management strategies. Workshop participants have highlighted the need to generate training spaces from the initial stages of cultivation, including the preparation of plots for planting, to maximize the benefits of sustainable practices.

The Hub approach, which has proven to be an effective model in Mexico and other countries, is making significant progress in Colombia. By connecting the actors in the maize value chain, facilitating the generation and socialization of knowledge, and driving innovation from the local level, this methodology represents a comprehensive solution to address the country’s agricultural challenges.

With the coordinated work of institutions, producers, and scientists, Colombia is laying the foundations for a more resilient and competitive agri-food sector. CIMMYT’s experience in implementing the Hub methodology in different regions of the world is an example of how science, innovation, and collaboration can transform the future of Colombian agriculture.

Zimbabwean farmers face crop-munching armyworm after drought

Written by dmedina on . Posted in In the media.

Zimbabwean farmers are facing severe crop losses due to the combined impacts of climate change, drought, and fall armyworm infestations, threatening food security and livelihoods. CIMMYT’s expertise in climate-smart agriculture is crucial in tackling these challenges, as highlighted by Dr. Christian Thierfelder, who emphasizes sustainable pest management strategies such as intercropping, regenerative farming, and biological control methods. These approaches not only reduce reliance on pesticides but also enhance resilience against climate-driven pest outbreaks. With maize yields at risk, integrating CIMMYT’s research-driven solutions can help smallholder farmers adapt, ensuring more sustainable and productive farming systems in Zimbabwe and across sub-Saharan Africa.

Read the full story.

How more inclusive maize breeding can yield better outcomes for women farmers in Zimbabwe

Written by dmedina on . Posted in Blogs.

Farmers in Zaka with their recent harvest of drought tolerant maize (Photo: CIMMYT)

In Zimbabwe, CGIAR, through CIMMYT, runs a maize breeding program to strengthen food security and livelihoods in a country where maize is a staple crop. The program spans diverse testing plots – managed exclusively by men, women, or both – providing crucial insights into real-world farm dynamics. A significant component of our work is the extensive on-farm trials conducted across various regions, helping us understand how men and women farmers interact with and benefit from new maize varieties. Here are two ways we ensure that women-managed plots reap the same benefits as those led by men in Zimbabwe.

Increasing Women’s Representation in Crop Breeding Trials

In many developing economies, women tend to have limited access to fertilizers, leading to lower soil fertility and faster land degradation.

At the same time, although men and women may express similar preferences for improved maize varieties, when faced with the same options, women tend to grow varieties that better meet their specific needs – requiring less fertilizer, for example.

This dichotomy highlights the importance of on-farm trials in the crop development process, as they provide insights into the diverse needs and realities of different farmer groups.

Zimbabwe’s maize breeding program has expanded on-farm trials significantly over the past few years, by over five-fold. However, women-managed plots are often underrepresented in participatory approaches. Research from Kenya also showed that trial participants are often wealthier and more educated, benefiting from stronger access to information and agricultural networks.

Training to Ensure Inclusive Farmer Representation

CGIAR and CIMMYT often rely on partners with direct connections to farming communities to select host farmers for breeding trials. Recognizing the risk of bias and underrepresentation of women farmers in this process, we designed a training program for extension officers to ensure a more representative selection of women farmers from different socioeconomic backgrounds in the country.

Without intentional representation, trial results may skew toward wealthier, male-managed farms – limiting their relevance for the broader farming population. In addition, in Zimbabwe, women-managed households are not a homogeneous group. Our research identified two distinct categories, each with unique challenges and needs. One group was wealthier in terms of agricultural assets and livestock, with a greater area under maize production. The second group of women-managed households was more resource-poor, with smaller livestock herds and greater use of intercropping within maize fields.

Using data from a survey of over 2,000 farmers, we worked to validate farmer selection processes, ensuring that women farmers were accurately represented. Today, this training is conducted annually and has become a key component of our program’s approach.

For too long, on-farm trials did not adequately reflect the diversity of farming realities. Through this gender-sensitive approach, we are now able to fine-tune recruitment methodologies to account for socioeconomic disparities. By ensuring that all groups are included in trials, we can develop and promote maize varieties that truly serve the diverse realities of Zimbabwean farming households.

Farmer in Murehwa District with her drought tolerant maize variety (Photo: Jill Cairns/CIMMYT

Incorporating Gender and Social Considerations into the Testing of Novel Genetic Technologies

In hybrid maize seed production, both male and female plants are planted side by side to facilitate controlled pollination. A critical step in this process is detasseling – the removal of male flowers (tassels) from the female plants to prevent self-pollination. If detasseling is not done correctly, the resulting seeds will not express hybrid vigor, ultimately affecting yield and performance.

This process presents two major challenges. Incomplete detasseling can result in hybrid purity issues that can lead production fields to either being rejected or farmers unknowingly paying for lower-quality seed that impacts productivity. Accidental leaf loss during the detasseling process also reduces female seed yields by approximately 14%.

To address these challenges, a Gates Foundation-funded project we implemented has explored ways to simplify the process of hybrid maize seed production by removing the need to detassel through a novel genetic technology. This technology also had a clear benefit for women farmers.

Why This Matters and How to Scale the Innovation

Although seed production involves multiple steps, this innovation has direct benefits, especially in resource-limited settings. Since only 50% of plants produce pollen, this approach optimizes yield—particularly under low-nitrogen conditions, where many smallholder farmers struggle. The technology is adaptable across different maize varieties, making it a scalable solution.

Ultimately, women farmers, who tend to manage smaller plots with fewer resources, stand to gain from improved seed access and yield stability.

To validate this approach, we conducted station trials, followed by on-farm testing. These trials are helping us understand how both men and women farmers adopt and benefit from these varieties, particularly in drought-prone areas, where women are more likely to recycle seeds.

With the knowledge that in drought-prone years women were more likely to recycle hybrid seed, we refined our testing strategy to evaluate potential yield benefits if recycled. We found the technology provided a small, yet significant yield benefit should a farmer choose to recycle hybrid maize seed in an anticipated drought season.

Our approach provides insights into how gender and social inclusion considerations can be incorporated into breeding testing strategies. By evaluating variety performance across real-world farm conditions and gathering insights to refine and optimize future breeding efforts, new varieties will meet the needs of men and women farmers in Zimbabwe.

Conclusion

When promoting the adoption of new maize varieties and technologies, gender is one factor among many that shape adoption. Early- and late-stage on-farm trials are essential in bridging the gap between scientific innovation and real-world impact, ensuring that the varieties we develop are not only high-performing in research settings but also practical, accessible, and beneficial for all farmers.

To achieve this, a transdisciplinary approach is key. Integrating social scientists into breeding and development strategies provides deeper insights into how different farming groups interact with new technologies. By refining our selection process, testing, and deployment, we can ensure that both women- and men-managed farms benefit equitably, ultimately driving food security and better livelihoods.

Farmer Tariro from Gokwe South prepares maize for milling (Photo: CIMMYT)

Resources: 

  • Snapp, Sieglinde. (2002). Quantifying Farmer Evaluation of Technologies: The Mother and Baby Trial Design. 

*** 

Written with Julie Puech, Breeding for Tomorrow and Accelerated Breeding.

Main image: Farmers in Zaka with their recent harvest of drought tolerant maize.

Photo credit: CIMMYT.

We express our gratitude to the CGIAR research funders for their invaluable contributions to the CGIAR Trust Fund. 

Tecnologico De Monterrey Develops Nutraceutical Corn to Address the Global Food Crisis and Improve Health

Written by dmedina on . Posted in In the media.

CIMMYT collaborated with Tecnologico de Monterrey’s FEMSA Biotechnology Center in the development and validation of nutraceutical corn. By leveraging Mexico’s maize diversity through the world’s largest germplasm bank, CIMMYT contributed expertise in crossbreeding to help incorporate traits such as higher protein, fatty acids, and antioxidants, supporting advancements in food security and sustainable agriculture.

Read the full story.

Four New CIMMYT maize hybrids available from LATAM Breeding Program

Written by dmedina on . Posted in News.

CIMMYT is happy to announce four new, improved tropical and subtropical maize hybrids that are now available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across Latin America and similar agro-ecologies in other regions. NARES and seed companies are hereby invited to apply for licenses to pursue national release, scale-up seed production, and deliver these maize hybrids to farming communities.

Newly available CIMMYT hybrids Key traits Target Agro-ecology
CIM22LAPP1A-10 Intermediate maturing, white, high yielding, and resistant to TSC, MLB and Ear rots Lowland tropics
CIM22LAPP1A-11
CIM22LAPP1C-10 Intermediate maturing, yellow, high yielding, and resistant to TSC, MLB and Ear rots
CIM22LAPP2A-28 Intermediate-maturing, white, high-yielding, and resistance to GLS and Ear rots. Mid-altitudes/

Spring-Summer season

 

Performance data Download the CIMMYT LATAM Maize Regional (Stage 4) and On-Farm (Stage 5) Trials: Results of the 2022 and 2023 Seasons and Product Announcement from Dataverse.
How to apply Visit CIMMYT’s maize product allocation page for details
Application deadline The deadline to submit applications to be considered during the first round of allocations is January 31st, 2025. Applications received after that deadline will be considered during subsequent rounds of product allocations.

 

The newly available CIMMYT maize hybrids were identified through rigorous, years-long trialing and a stage-gate advancement process which culminated in the LT23-STG5-THW, LT23-STG5-THY, and 01-23MASTCHSTW Stage 5 Trials. The products were found to meet the stringent performance and farmer acceptance criteria for CIMMYT’s breeding pipelines that are designed to generate products tailored in particular for smallholder farmers in stress-prone agroecologies of Latin America.

Applications must be accompanied by a proposed commercialization plan for each product being requested. Applications may be submitted online via the CIMMYT Maize Licensing Portal and will be reviewed in accordance with CIMMYT’s Principles and Procedures for Acquisition and use of CIMMYT maize hybrids and OPVs for commercialization. Specific questions or issues faced with regard to the application process may be addressed to GMP-CIMMYT@cgiar.org with attention to Debora Escandón, Project Administrator, Global Maize Program, CIMMYT.

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Five New CIMMYT maize hybrids available from Southern Africa Breeding Program

Written by dmedina on . Posted in News.

CIMMYT is happy to announce five new, improved tropical maize hybrids that are now available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across Southern Africa and similar agro-ecologies in other regions. NARES and seed companies are hereby invited to apply for licenses to pursue national release, scale-up seed production, and deliver these maize hybrids to farming communities.

Newly available CIMMYT hybrids Key traits
CIM23SAPP1A-02 Intermediate-maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB, Ear rots, and MSV
CIM23SAPP1A-11
CIM23SAPP1B-02 Late maturing, white, high yielding, drought tolerant, low-nitrogen tolerant, and resistant to MSV, TLB, and Ear rots
CIM22NUVA-75 Across maturity groups, PVA biofortified, orange grain, high yielding, drought-tolerant, NUE, resistant to GLS, TLB, ear rots, MSV
CIM23NUVA-13

 

Performance data Download the CIMMYT Southern Africa Maize Regional On-Station (Stage 4) and On-Farm (Stage 5) Trials: Results of the 2021/22, 2022/23, and 2023/24 Seasons and Product Announcement from Dataverse.
How to apply Visit CIMMYT’s maize product allocation page for details
Application deadline The deadline for submitting applications to be considered during the first round of allocations is 10 January 2025. Applications received after that deadline will be considered during subsequent rounds of product allocations.

 

The newly available CIMMYT maize hybrids were identified through rigorous, years-long trialing and a stage-gate advancement process which culminated in the 2023/24 Southern Africa Regional On-Farm Trials. The products were found to meet the stringent performance and farmer acceptance criteria for CIMMYT’s breeding pipelines that are designed to generate products tailored especially for smallholder farmers in stress-prone agroecologies of Southern Africa.

Applications must be accompanied by a proposed commercialization plan for each product being requested. Applications may be submitted online via the CIMMYT Maize Licensing Portal and will be reviewed in accordance with CIMMYT’s Principles and Procedures for Acquisition and use of CIMMYT maize hybrids and OPVs for commercialization. Specific questions or issues faced with regard to the application process may be addressed to GMP-CIMMYT@cgiar.org with attention to Nicholas Davis, Program Manager, Global Maize Program, CIMMYT.

 

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Exploration of options for functional seed systems and understanding of market needs for cereals and pulses in sub-Saharan Africa

Written by mcallejas on . Posted in Blogs.

Participants of the seed systems and market intelligence team at the retreat in Kenya (Photo: CIMMYT).

The Seed Systems and Market Intelligence Team of the Sustainable Agrifood Systems (SAS) Program convened for a three-day retreat in Kenya. The retreat provided an opportunity to review ongoing research on seed systems and market intelligence conducted across CIMMYT projcts and CGIAR initiatives.

The event featured oral and poster presentations highlighting key findings from current research activities, fostering constructive feedback from colleagues. Discussion focused on strengthening the team’s technical capacity and ensuring its responsiveness to CIMMYT’s research programs and the broader CGIAR science agenda.

During the retreat, team members presented research spanning a wide range of topics. One key area focused on understanding the demands of farmers, processors, and consumers, for future crop traits, with the aim of informing breeding systems programs to maximize their impact.

The team highlight challenges faced by agro-processors, such as rancidity in pearl millet, which affects the shelf life of processed millet flour. Research also explored groundnut processing across different countries, revealing varied market demands.

In Malawi, groundnut markets prioritize grain size, color and uniformity-driven largely by export requirements-while oil content is less of a focus. In contrast, Nigerian markets demand high oil content for kuli kuli production and show a preference for early maturing varieties. Meanwhile, in Tanzania, an emerging peanut butter market has created opportunities for new groundnut varieties tailored to this product.

Seed systems research in Kenya highlighted how information and economic incentives for farmers and agro-dealers can serve as effective policy options to boost the adoption of new maize hybrids. These strategies have the potential to increase the market share of newly introduced hybrids in the maize seed sector.

The team showcased the impact of providing variety-specific, independently evaluated yield data for commercially available seed products under local conditions to guide farmers’ seed choices. Additionally, they explored the use of rebates as incentives for agro-dealers to stock new products and actively encourage farmers to try them. The role of price discounts and targeted information at the retail level for newly released varieties was also discussed as a way to promote adoption among farmers.

Another key area of research focused on how farmers perceive existing promotional materials distributed by seed companies. Feedback indicated that most leaflets and posters were not visually engaging. Farmers expressed a preference for materials that include visuals of plant stands, cob sizes, yield potential, and other critical details, presented in local languages like swahili.

Looking ahead, the team outlined a new four-year project supported by the Impact Assessment Group under the Genetic Innovations Action Area. This initiative will build on the current findings to generate further evidence on how information can accelerate farmer adoption of new seed products. It will also examine the role of agro-dealers as key information agents to disseminate knowledge effectively to farmers.

The meeting also highlighted the assessment of varietal turnover in Ethiopia and the role of the DNA Fingerprinting (DNA FP) approach in improving the accuracy of varietal identification. Accurate data generated through this method supports more robust studies on varietal adoption, turnover, and impact. It also enables the assessment of whether released varieties are being cultivated within their target agro-ecologies and contributes to understanding varietal diversity within production systems.

Discussions emphasized the relevance of the DNA FP approach for accurate data collection and its potential for broader application beyond Ethiopia, Tanzania, and Nigeria, where the IMAGE project is currently active. Expanding its use to other regions would further strengthen research efforts in seed systems and market intelligence.

Paswel Marenya, associate program director of SAS Africa, commended the team for the depth and breadth of their research and encouraged greater visibility of results within CIMMYT and beyond. As a key outcome of the meeting, the team committed to increasing its visibility in seed systems and market intelligence research while building a stronger, more qualified team to achieve this goal.

In terms of staffing, the team has a solid presence in Africa but aims to expand its reach through enhanced resource mobilization. Efforts are underway to strengthen the Seed Systems and Market Intelligence team’s presence in other regions where CIMMYT operates, including Latin America (LATAM) and South Asia.

Prof. Jianbing Yan, Former CIMMYT maize scientist, appointed as the new President of Huazhong Agricultural University, China

Written by dmedina on . Posted in News.

Huazhong agricultural university (Photo: Wallhere)

Prof. Jianbing Yan, a former maize scientist at CIMMYT, has been appointed as the President of Huazhong Agricultural University (HZAU) in Wuhan, China on 20th August 2024. Jianbing was part of the CIMMYT family working on maize genetics and molecular breeding from 2006 to 2011. He worked as a Joint Post-Doctoral Associate between CIMMYT and Cornell University from October 2006 to September 2008, as an Associate Scientist from October 2008 to August 2009, and as a Scientist from September 2009 to March 2011. Due to his excellent work on Provitamin A biofortification in maize grain, Jianbing received the Japan International Award for Yong Agricultural Researchers in 2010, and the DuPont Young Professor Award in 2011. He also received the Outstanding CIMMYT Alumnus Award in 2014.

Jianbing joined HZAU as a full professor in April 2011. He served as the Vice Dean of the College of Life Science and Technology of HZAU from 2013 to 2017, as the Dean of the College of Plant Science and Technology of HZAU from 2017 to 2020, and as the Vice President of HZAU from 2019 to 2024.

Prof. Jianbing Yan

Jianbing is renowned in the research areas of maize genetics, genomics, and big data-driven breeding. He was the winner of the 2022 L. Stadler Mid-Career Award from the Maize Genetics Cooperation; the award is given to an outstanding maize scientist who has been in a permanent position for between nine and 20 years and has an outstanding track record of discovery research in maize genetics. Jianbing also received multiple national awards, including the National Natural Science Foundation for Excellent Youth in 2012, the National Youth Top-notch Talent Support Program in 2013, the National Science Fund for Distinguished Young Scholars and the Chair Professor of Cheung Kong Scholars Programme in 2015, etc.

Huazhong Agricultural University is recognized as a first-class agricultural university worldwide. It has a total of 14 disciplines listed as the Top 1% of ESI (Essential Science Indicators), including Plant & Animal Science, and Agricultural Sciences. HZAU and CIMMYT jointly hosted a webinar on Intelligent Agriculture in 2020. CIMMYT is one of the four funder institutes for the Global Food Security Association for Young Scientists hosted by HZAU, which was officially launched in December 2022 to connect young scientists around the world, working in the fields of food security. The 1st and 2nd Global Food Security Forums for Young Scientists were co-organized by HZAU and CIMMYT in Wuhan in 2022 and 2023, respectively, to inspire future generations of scientists to communicate and exchange ideas on cutting-edge agricultural research. Dr B.M. Prasanna, Director of CIMMYT Global Maize Program, CIMMYT, has been serving as the member of the International Advisory Committee of HZAU since 2022.

CIMMYT looks forward to building strong partnerships with HZAU in strategic and applied research of crop improvement, sustainable agrifood systems, and capacity building of next-generation agricultural researchers.

 

Enhancing farmer’s crop productivity with resilient maize varieties tailored to their needs

Written by dmedina on . Posted in Blogs.

Dorothy Mandaza, local farmer from ward 19 of Seke District, inspecting her maize cobs (CIMMYT)

Maize productivity in eastern and southern Africa faces numerous challenges, including biotic and abiotic stresses, as well as socio-economic factors. To tackle these constraints, CIMMYT, in collaboration with partners, has been developing elite multiple stress-tolerant maize hybrids for different market segments. The hybrids are rigorously evaluated in research stations under managed stresses, especially those faced by farmers, including drought, heat, and low nitrogen. The process is complemented with evaluations conducted in actual farmer conditions through a participatory approach, which enables researchers to identify traits preferred by farmers.

Over the years, and through consistent engagement with farming communities, CIMMYT and partners have established a large on-farm testing network to allow farmers to test the best-performing hybrids within their own fields and management. This ensures that new varieties selected for commercialization suit the needs, constraints, and priorities of smallholder farmers.

Centrality of ROFT in the variety development process
Regional on-farm trials (ROFTs) are a crucial step towards maximizing the impact of breeding investments. ROFTs help scientists understand the performance of pipeline hybrids under diverse management conditions. The data and insights gathered from these trials, led by district leads, are instrumental in identifying the best varieties to release. In Zimbabwe, the extensive on-farm testing is conducted with support from Zimbabwe’s government extension arm, the Department of Agricultural, Technical, and Extension Services (Agritex), and selected seed companies.

To help track the progress or challenges in varietal performance evaluation at the farm level, CIMMYT has been convening feedback sessions with district agriculture extension officers (DAEOs) across 19 districts. These sessions have been instrumental in strengthening the collaboration with Agritex, standardizing data collection, and improving data quality and returns from the established on-farm testing network.

Conversations with district agriculture extension officers in Harare during a feedback session. (Photo/CIMMYT)

The ROFT trials have been ongoing in Zimbabwe for over a decade across 19 districts, located in natural regions I, II, and III. These trials have been implemented by more than 137 AEOs and have involved over 1,000 farmers. The network deliberately included a diverse range of farmers, with around 40% being female plot managers, to encompass a wide range of smallholder farming practices.

Participatory engagement is key
Every year, CIMMYT produces improved varieties that are then taken up by partners, including National Agricultural Research System (NARS) partners and seed companies. The on-farm trials aim to generate agronomic performance data in comparison to the widely grown commercial varieties and farmers’ own varieties. This data is used for a rigorous advancement process, where varieties that pass the test are then furthered for licensing and possible commercialization by CIMMYT’s partners.

Farmer involvement at the final stage of the variety selection process is key to the success of these trials. Farmers evaluate the varieties based on their specific needs, on their farms. This step is crucial as it empowers farmers to have a say in the variety development process. CIMMYT actively uses this participatory selection approach, seeking input from farmers and refining breeding targets as necessary. Farmers communicate their preferences and feedback through the farmer evaluation sheets, helping breeders fine-tune their targets and develop varieties that meet farmers’ needs.

Another key element of the on-farm trials is that they help assess breeding progress in farmers’ fields in terms of crop productivity and return on investment.

Intercropping

Written by mcallejas on . Posted in Uncategorized.

The Intercropping project aims to identify options for smallholder farmers to sustainably intensify wide-row crop production through the addition of short-duration, high-value intercrop species and to help farmers increase their productivity, profitability and nutrition security while mitigating against climate change.

The focus is on intensification of wide-row planted crops: dry (rabi) season maize in Bangladesh, eastern India (Bihar and West Bengal states) and Bhutan, and sugarcane in central north India (Uttar Pradesh state). The primary focus is to sustainably improve cropping system productivity, however, the effects of wide-row, additive intercropping at the smallholder farm level will be considered, including potential food and nutrition benefits for the household.

There are many potential benefits of wide-row, additive intercropping, beyond increased cropping system productivity and profitability: water-, labor- and energy-use efficiencies; improved nutrition and food security for rural households; empowerment for women; and (over the longer term) increased soil health.

Little research has been conducted to date into wide-row, additive intercropping (as distinct from traditional replacement intercropping) in South Asian agroecologies. To successfully and sustainably integrate wide-row, additive intercropping into farmers’ cropping systems a range of challenges must be resolved, including optimal agronomic management and crop geometry, household- and farm-scale implications, and potential off-farm bottlenecks.

This project aims to identify practical methods to overcome these challenges for farming households in Bangladesh, Bhutan and India. Focusing on existing wide-row field crop production systems, the project aims to enable farmers to increase their cropping system productivity sustainably and in a manner that requires relatively few additional inputs.

Project activities and expected outcomes:

  • Evaluating farming households’ initial perspectives on wide-row, additive intercropping.
  • Conducting on station replicated field trials into wide-row, additive intercropping, focusing on those aspects of agronomic research difficult or unethical to undertake on farms.
  • Conducting on farm replicated field trials into wide-row, additive intercropping.
  • Determining how wide-row, additive intercropping could empower women. Quantify the long-term benefits, risks and trade-offs of wide-row, additive intercropping.
  • Describing key value/supply chains for wide-row, additive intercropping. Determine pathways to scale research to maximize impact.
  • Quantifying changes in household dry season nutrition for households representative of key typologies in each agroecological zone.

Potential for independent performance information to shape farmers’ seed choice for hybrid maize: Insights from Kenya

Written by dmedina on . Posted in Blogs.

Maize production in Kenya is a critical component of the country’s agriculture and food security. However, climate change poses a serious threat to its production. Changes in temperature and precipitation patterns can affect maize growth, reduce yields, and increase the incidence of pests and diseases.

Prolonged droughts and unpredictable rainfall can lead to crop failures, while extreme weather events can damage crops and infrastructure. As the climate continues to change, it is essential for Kenyan farmers to adopt resilient agricultural practices and more adapted seed products to safeguard maize production and ensure food security for the population.

For decades, seed companies as well as governments and donors have invested in maize hybrid breeding. Dozens of new hybrids have been made available to seed companies throughout East Africa for multiplication and distribution. These hybrids are designed and tested to outperform older hybrids in terms of yield under rainfed conditions, to include tolerance to drought and pests.

However, the potential impact of these investments has been hampered by the slow turnover of hybrids among farmers. Research has shown that, despite the availability of newer, higher-performing varieties, farmers tend to purchase older, less productive hybrids. The ‘turnover problem’ in Kenya has been described by CIMMYT researchers in a recent publication.[1]

One of the constraints responsible for the low turnover of varieties is a lack of information among farmers on the performance of the newer products. Despite advancements in the development of new seeds and the retail infrastructure to reach farmers, neither the public nor the private sector is generating and disseminating information on the performance of different maize seed products across various agroecologies. Farmers therefore have choice overload but lack objective information on relative seed performance required to make informed seed choices across seasons and growing conditions.

CIMMYT conducted a field experiment to shed light on the potential influence of seed-product performance information on farmers’ seed choices. The study involved aggregating and packaging farmer reported yield data for some seed products and presenting this to randomly selected farmers at the point of sale to assess whether the new information would influence their choice of products. The study was conducted in Kirinyaga and Embu counties where, like many parts of Kenya, farmers have access to a diverse range of maize seed products from seed companies which promise benefits like higher yields and improved resilience but lack objective information on their performance which could support their choices, including when to switch and to what.

[1] https://journals.sagepub.com/doi/full/10.1177/0030727019900520

 

The experiment

The study was conducted in March 2024, at the onset of the long rain season. The research team collaborated with 36 local agro-dealers in five towns and surveyed over one thousand farmers.  Farmers were intercepted as they approached the agro-dealer outlets and briefed about the study. Upon consent, they were informed on the benefits of trying something new (experimenting with varieties) and  were offered a voucher for one free bag of maize seed to encourage them to try a seed product new to them. They then were randomly assigned to two experimental groups: treatment and comparison. Participants in the treatment group were shown a chart containing product-specific yield data on maize hybrids grown in their counties (see the chart below). The chart contained farmer-reported yields from the previous year’s long rain season aggregated at two levels: county average yield and the average yield of the top 25% of farmers who realized the highest yields. The latter demonstrated the actual potential of a seed product. They were asked that, if they wished, they could choose the voucher product for experimentation from the list but they were not required to. Participants in the comparison group were offered placebo information that would not affect their seed choice: they were given some fun facts about Kenya and agriculture in Kenya. We assess the effect of the information on the choice of the bag of seed they were buying with the voucher to experiment with.

Table 1: Product-specific performance information on maize seed products in Kirinyaga March-August 2023 *actual product names have been removed for this blog*

Before they made any purchases, the customers were asked about which maize seed they intended to buy. After purchase, they were interviewed again to find out which maize seeds they bought and how they had used the voucher.

 

 

 

 

 

 

What we found

Majority of the treatment farmers had a very positive evaluation of the information they received, indicating that they found it relevant and useful when making seed choice. Specifically, over 90% of them said that the information was trustworthy and easy to understand while about 80% said that the information was easy to recall. Over 80% of them disagreed that the list of varieties was too long to comprehend, the information on varieties was similar and hard to differentiate and that it was hard for them to choose a variety from the list.

This positive evaluation of the information is also reflected in their seed choices. Pre-purchases (before they entered the agrodealer store), farmers who were exposed to the performance information showed increased certainty in their choices and a higher inclination towards products listed in the product performance data, particularly the top-performing varieties. While 5% of the comparison farmers indicated that they did not know what to buy with their vouchers, only 2% of the treatment farmers suffered the same uncertainty. Such farmers relied mostly on agro-dealers to recommend a product they could experiment with.

As shown by the bar chat below, only 7% of comparison group farmers desired to use their vouchers on (or had an effective demand for) products which were the top two in the product performance lists. This increased to 27% among the information group farmers, representing an increase of 286% in the demand of top performing products.

However, although our intervention relaxed an essential constraint (product performance information) and increased the demand for some seed products, the actual purchases were subject to other constraints, stock-outs key among them. As a result, both groups showed shifts from initially desired products in their actual purchases. Even so, the treatment group maintained a stronger alignment with the listed products, exhibiting a higher likelihood of purchasing top-performing products. Only 5% of farmers in comparison group used their vouchers to purchase products which were top two in the product performance lists. This increased to 13% among farmers in the treatment group, representing a 160% increase in the likelihood of purchasing the best performing products in the lists.

Reflections

Slow varietal turnover among maize farmers in E. Africa is a pervasive problem and there is no one solution to it. This research shows that information on product performance can be an effective approach in bringing to the attention of farmers newer, more adapted and better yielding seed products. Dissemination of such information can be incorporated in extension programs, shared at the point of sale, shared through SMSs and WhatsApp messages, displayed in posters fixed in public places, etc.

The findings offer clear recommendations for future investments in seed systems development. These include the implementation of new product testing regimes to ensure quality and objectivity of performance data, testing what other information would be useful to farmers – beyond yield data, exploring new marketing options to reach farmers more effectively, and considering additional approaches to empower farmers with the knowledge they need to make informed decisions thus leading to improved agricultural productivity, resilience, and livelihoods.

maiz

Helping Colombia’s smallholder farmers to leverage and preserve maize diversity

Written by dmedina on . Posted in Blogs.

In Colombia, maize is the most important cereal, integral to culture, tradition, and diet. In 2019, Colombia consumed 7.2 million tons of maize, a quarter of which was white-grain maize used for human food (the remainder was yellow-grain maize for animal feed, with a small portion for industrial uses). National production is concentrated in the departments of Meta, Tolima, Córdoba, Huila, and Valle del Cauca. Native and creole maize varieties—the latter comprising farmer varieties of mixed native and other ancestries—are grown for use in traditional dishes or for sale at local markets.

Due to climate change, socioeconomic pressures, and the out-migration of smallholder farmers seeking better livelihoods, native maize varieties and the unique genetic qualities those varieties embody are endangered. We aim to design strategies that benefit smallholders who wish to continue in agriculture and perhaps continue growing native varieties valued in their communities, fostering the conservation and production of native maize. CIMMYT in Mexico has already facilitated commercial linkages between chefs in Mexico City and tourist areas (for example, in the states of Oaxaca, Yucatán, and the State of Mexico), sourcing blue maize landrace grain from farmers in mutually beneficial arrangements.

CIMMYT and local partners have launched an ambitious initiative to map and strengthen the value chain of native maize in the departments of Nariño, Cundinamarca, Boyacá, Valle del Cauca, and Putumayo to promote beneficial farmer-market linkages and better understand Colombia’s maize value chain. Carried out under the Nature Positive Initiative of OneCGIAR, the project is documenting maize conservation, marketing, and consumption to design a critical path that strengthens the value chain of Colombian native maize and benefits agriculture and the economy of rural Colombian communities.

Most native maize varieties in Colombia are grown on small plots for home consumption, exchange, and the sale of surplus grain. “The production is planned so that the percentage of sales is lower than consumption,” explains a farmer from Nariño. “Maize grain is sold in traditional markets, typically on Saturdays or Sundays, most often as fresh white and yellow corn.”

In such markets, farmers may also sell their grain to intermediaries, but only in the markets of Nariño is the sale of creole and native maize varieties acknowledged. Varieties include yellow Capia, white Capia, yellow Morocho, and Granizo, with Chulpe being less common. The grain purchased is used to prepare a variety of traditional dishes and beverages.

The most commonly grown varieties are intended for the market and probably the regional and urban cultural groups that consume them, such as in Guaitarilla, Nariño, where large crops of white maize are marketed through intermediaries and traders to satisfy demand.

“A variety that is not widely grown may become more prominent due to market changes—such as the rise of niche markets,” the research team notes. Good examples are the departments of Pasto, Nariño, and Cundinamarca, where maize is increasingly grown to meet demand from buyers of purple or colored maize.

We have already identified several possible niche markets for smallholder maize varieties:

  • Fair trade enterprises. They promote the commercialization of national products at fair prices for farmers, offering maize in various forms from regions such as Boyacá and Cundinamarca.
  • Restaurants. They use maize in traditional dishes, reinterpretations of Colombian cuisine, and culinary experiments.
  • Small-scale local intermediaries. Without a fixed physical space, they distribute products to end users and other businesses.
Callanas and ricota, Pasto, Nariño. (Foto: Andrea Gómez)

Significant challenges may hamper these and other possible market opportunities in the maize value chain. Farmers, for example, face high production costs, climate change losses, competition from neighboring countries, dependence on intermediaries for sales, and a lack of land. For their part, buyers struggle with obtaining consistent production volumes from farmers, lack storage infrastructure, and face postharvest pest and disease management challenges.

While they are compelled by the need to feed their families and, if possible, grow enough grain to sell for a profit, smallholder maize farmers have also expressed interest in preserving maize diversity and their cultural practices.

“We are not interested in growing monocultures for marketing; we grow maize out of love to continue preserving it,” comments a farmer from Nariño. Another farmer adds: “I would grow or sell more if the production were aimed at protecting agrobiodiversity, food security, sovereignty, and preserving cultural practices.”

Focus group with farmers in Córdoba, Nariño on the importance of maize landrace conservation (Picture Janeth Bolaños)

To understand how niche markets could influence the conservation and rescue of native and creole maize in Colombia and, at the same time, design a critical path that strengthens the value chain and promotes fair and efficient niche markets, CIMMYT and its partners are conducting focus group interviews and buyer-meets-seller events. The aim is to mitigate challenges highlighted by the actors and create beneficial conditions for farmers and consumers, promoting a better future for Colombian smallholder farmers.

We deeply thank CIMMYT partners in Colombia for their contributions to this work: Andrea Gomez, Andrea Pinzón, and Jeisson Rodríguez.

SKUAST-K Maize Improvement Programme: Transforming Challenges into Bountiful Harvests

Written by dmedina on . Posted in In the media.

The SKUAST-K Maize Improvement Programme, in collaboration with CIMMYT, is making significant advancements in maize agriculture in Jammu and Kashmir. By developing resilient maize varieties and leveraging cutting-edge research, the programme addresses key challenges such as poor soil nutrition and erratic rainfall. This partnership has not only enhanced maize productivity and climate resilience but also secured substantial funding and facilitated the release of landmark varieties, ultimately contributing to a sustainable maize-based economy in the region.

Read the full story.

Unlocking Zambia’s maize potential through crop diversity

Written by Julian Bañuelos-Uribe on . Posted in Publications.

While maize is the primary staple food crop in Zambia, its productivity on farmers’ fields reaches on average only about 20 percent of what it could achieve with good agronomic practices. Some reasons for this inefficiency are use of traditional varieties, low fertilizer use, and ineffective weed and pest control.

Closing the gap between potential and realized yields would have major benefits for farmers in Zambia, both in terms of income and food security at the household and national levels. One possibility to increase maize productivity is by increasing crop diversity through the inclusion of legumes in maize-based farming systems. This could be done through intercropping, growing legumes in the rows between maize plants, or crop rotations and alternating maize and legumes in the same field from season to season.

CIMMYT scientists, along with collaborators from the Zambia Agriculture Research Institute (ZARI) and the University of Zambia’s School of Agricultural Science, set out to determine which cropping systems might lead to increased productivity for maize farmers in Zambia and their results were published in the journal Field Crops Research.

“There is great potential in Zambia to increase yields to help ensure food security,” said Mulundu Mwila, PhD candidate and scientist at ZARI. “We wanted to determine the cropping systems that offered the most benefits.”

Setting up the study

For this research, ZARI and CIMMYT scientists established maize-based cropping systems trials, comprising maize monocropping, and maize-legume rotations and intercrops under both ‘conventional’ tillage, and Conservation Agriculture, across 40 farms in a variety of agroecological zones in Zambia.  The team also conducted household surveys in the same communities hosting the on-farm trials to determine the share of households with enough cultivated land to benefit from the tested cropping systems.

Researchers found that the tested cropping systems produced more maize per hectare compared to non-trial host farms in the same region. The greatest positive effect uncovered was that maize-legume rotations in Zambia’s Eastern Province had the potential to increase maize yield by 1 to 2 tons per hectare, per growing season. “The Eastern Province trials showed better results because of stable and adequate rainfall amounts and distribution and because of using groundnut as a rotation crop,” said Mwila.

Researchers attributed the small effect of legumes on maize yield in the Southern Province to low levels of biomass production and nitrogen fixation, due to low and erratic rainfall, and to low residue incorporation because of livestock grazing. Conversely, the small effect of legumes on maize yield in the Northern Province might be attributed to the high rainfall amount in the region, leading to high rates of leaching of residual nitrogen during the growing season as well as the use of common beans as the preceding crop.

Finding the right amount of land

With evidence showing the potential benefits of maize-legume rotations, the availability of land is a constraint for small farms across sub-Saharan Africa, thus it is important to quantify the land area needed for farmers to implement maize-legume rotations.

“Our findings match prior research showing the benefits of maize-legume rotations in Eastern Zambia” said Silva. “However, implementing maize-legume rotations remains a challenge for many smallholders due to small farm sizes.”

Nearly 35, 50, and 70% of the surveyed farms in the Northern, Eastern, and Southern Provinces, respectively, had enough land to achieve the same level of maize production obtained on their farm with the yields of the maize-legume rotations tested in the on-farm trials. “With our findings showing increased maize yields, and our efforts to determine the amount of land needed for food and nutrition security at household level, the next steps can be to facilitate methods to disseminate this information to policy makers and to farmers that have enough land area to benefit from diversified cropping systems,” said Silva.

For farmers with not enough land to reap the benefits of maize-legume rotations, intercropping legumes within the maize has shown promising results. The researchers also call for further research to specify the contributing factors to small farms not seeing benefits from maize-legume rotations.