As part of her fact-finding mission across CGIAR Research Centers, Ismahane Elouafi, CGIARâs executive managing director, returned to CIMMYT headquarters in Texcoco, Mexico, where she studied as a Ph.D. student twenty years ago. Through meetings with CIMMYT staff from 21-24 December 2023, Elouafi learned how CIMMYTâs 2030 Strategy of more investment in developing food systems and climate-smart agriculture will contribute to CGIARâs 2030 vision of a food and nutrition secure future.
âCIMMYT was pleased to host Ismahane,â said Bram Govaerts, CIMMYT director general. âOur ultimate mission is to transform agrifood systems. The only way we will reach our goal of food and nutrition security is by working globally and collaboratively across the value chain.â
Elouafi examines samples with CIMMYT researchers at the biosafety laboratory. (Photo: CIMMYT)
At CIMMYTâs museum and gene bank, Elouafi met with researchers to discuss the latest discoveries in genetic innovation, biodiversity conservation, and crop breeding. Elouafi and Kevin Pixley, director of the Dryland Crops program, visited the biosafety laboratory and glasshouses where gene editing on pearl millet and ground nut represent cutting-edge work with dryland crops. Elouafi also saw gene editing for resistance to maize lethal necrosis, which is already in field validation with Kenyan partners from the Kenya Agricultural & Livestock Research Organization (KALRO).
Global Wheat and Dryland Crops presented CIMMYTâs 2050 vision for wheat in Africa and near-term goals of advancing partnerships from phenotyping platforms to the International Wheat Improvement Network (IWIN). Seed experts from the Seed Health Unit shared progress on the productivity and nutrition findings of key cereals for healthy and balanced diets.
Elouafi also visited conservation trial plots with Jelle Van Loon, associate director of the Sustainable Agrifood Systems (SAS) program, who briefed Elouafi on cropping systems diversity related to maize, wheat, and beans, and showcased a variety of innovative farming technologies. At the trial plots, Elouafi met with Guillermo BretĂłn, a farmer, to talk about CIMMYTâs efforts to expand the MasAgro program into Central America aiming to address the regionâs growing food insecurity contributing to migration.
(Left to right) Guillermo BretĂłn, Ismahane Elouafi, Bram Govaerts, and Jelle Van Loon, test a range of novel farming technologies. (Photo: CIMMYT)
The value of genetic resources as sources of novel diversity was discussed with Elouafi during a visit to field screenhouses, where she saw wide crosses work for biological nitrification inhibition (BNI) in wheat, gene bank accessions of triticaleâa cross between wheat and ryeâfor use in searching for new sources of resistance to wheat blast, and the ex-situ clonal collection of tripsacum, a wild relative of maize.
âCIMMYTâs 2030 Strategy adopts a systems approach to food science, which I strongly support. Through the development of mechanization and post-harvest management, increased focus on seed systems and health, and most importantly, cooperation with partners to ensure that improved crop varieties are adopted by smallholders, I am confident that this approach will only strengthen CIMMYTâs historical strength of research and innovation for food and nutrition security and contribute to achieving CGIARâs 2030 mission,â said Elouafi.
Kevin Kabunda, chief of party for the Southern Africa Accelerated Innovation Delivery Initiative (AID-I) MasAgro Africa Rapid Delivery Hub (AID-I) and Sieglinde Snapp, director of the SAS program, presented key milestones achieved in southern and eastern Africa on expanded seed systems, market access, and mechanization technologies. Snapp also highlighted important CIMMYT-led initiatives like the CGIAR Plant Health Initiative and the Cereal Systems Initiative for South Asia (CSISA) which have had a positive impact on smallholders in part because of partnerships with government agencies and other CGIAR Research Centers.
Elouafi and Govaerts visited the ancient city of TeotihuacĂĄn to learn about the cultural significance of maize to the history and agricultural practices of the Americas. She received a guided tour by chef Carlos Cedillo, operational director of La Gruta, a local restaurant dedicated to understanding and promoting the production and consumption of native maize varieties in the Valley of Mexico. CIMMYT has collaborated with La Gruta through capacity building initiatives by CIMMYT specialists for technicians and farmers.
Elouafi joins CIMMYT staff for a meet and greet coffee session. (Photo: CIMMYT)
Elouafi joined CIMMYT staff in a meet and greet session on 21 December, where staff expressed the strides being made by CIMMYTâs leadership team to foster a more inclusive workplace. âThis moment of coming together with the staff that make CIMMYT a great place to work and who position the Center as a significant actor in agricultural development will be a highlight of my visit,â said Elouafi.
Maize production is surging due to its diversified end uses. While it is already the first staple cereal globally, it is expected to emerge as the worldâs predominant crop for cultivation and trade in the coming decade. Globally, it serves primarily as animal feed, but it is also a vital food crop, particularly in sub-Saharan Africa, Latin America, and in some areas in Asia.Â
Climate change is, however, altering the conditions for maize cultivation, especially in the rainfed, stress-prone tropics. Abiotic stresses like heat, drought, and floods, as well as biotic threats such as diseases and insect pests are becoming more frequent. These have a disproportionate impact on the resource-constrained smallholders who depend on maize for their food, income, and livelihoods.Â
In a race against time, crop breeders are working to enhance maizeâs resilience to the changing climates. Among others, CIMMYT and the International Institute of Tropical Agriculture (IITA), working within CGIARâs Accelerated Breeding Initiative, are utilizing breeding innovations to develop climate-resilient and nutritionally enriched maize varieties needed by the most vulnerable farmers and consumers. Â
Better processes
Improving maize yields in the rainfed, stress-prone tropics is challenging. Nevertheless, CGIARâs efforts have significant impacts, as breeding programs embraced continuous improvement and enhanced efficiency over the years. Â
To increase genetic gains, CIMMYT maize breeding program implemented a systematic continuous improvement plan. Sixty percent of CIMMYTâs maize lines in Eastern and Southern Africa (ESA) are now developed through technologies that speed up breeding cycle and improve selection intensity and accuracy; these include doubled haploid technology, high-throughput phenotyping, molecular marker-assisted forward breeding, and genomic selection. The breeding cycle time has been reduced from five or six years to only four years in most of the maize product profiles. Product advancement decisions now incorporate selection indexes, and specialized software aid in the selection of parental lines for new breeding starts.Â
CIMMYT and IITA maize teams are working together to investigate several key traits in maize for discovery, validation, and deployment of molecular markers. CGIAR maize team developed a framework for implementing a stage-gate advancement process for marker-trait pipeline, which enables informed decision-making and data-driven advancements at multiple stages, from marker-trait discovery proposal to marker discovery, validation, and deployment. Consolidating research efforts and implementing this process is expected to increase efficiency and collaboration in maize breeding programs.
At the end of the breeding process, breeders must ensure the quality assurance and quality control (QA/QC) of the parental lines of the new varieties. Seed quality, which includes genetic purity, genetic identity, and verification of parentage â is critical in maize breeding and commercial seed production. Â
CIMMYT has worked to enhance the capacity of NARES and seed company partners in Eastern and South Africa (ESA), Asia, and Latin America, in utilizing molecular markers for QA/QC in breeding and commercial seed production. This has resulted in more reliable and accurate outcomes. In addition, webinars and user-friendly software have boosted results for NARES maize breeders, regulatory agencies, and seed companies. These combined efforts mean a dependable, cost-effective, and efficient QA/QC system for the maize seed value chain in the Global South.Â
Better toolsÂ
With traditional means, obtaining a genetically homozygous or true-to-type maize line requires six to eight generations of inbreeding, and thus, more than ten years for developing a new hybrid. The technique of doubled haploid (DH), which enables derivation of 100% genetically homozygous lines in just two generations, is now integral to modern maize breeding. CIMMYT has pioneered the development of tropical maize DH technology, by developing and disseminating tropicalized haploid inducers, establishing centralized DH facilities in Mexico, Kenya and India, and providing DH development service to partners. Â
Regional on-farm trials (ROFTs) is a crucial step in maximizing the impact of breeding investments. ROFTs help scientists understand performance of the pipeline hybrids under diverse farmersâ management conditions, besides environment, soil variability, etc.Â
In ESA, ROFT networks for maize are expanded significantly over the last few years, from 20-30 sites per product profile to up to 300 sites, encompassing a wide range of smallholder farming practices. The experimental design was simplified to use less germplasm entries to be tested per farm, making it easier for the farmers to participate in the network, while improving data quality. Collaboration with NARES, seed companies, NGOs, and development partners was significantly stepped up to capture the social diversity within the target market segments. Gender inclusion was prioritized.
Training workshop organized by CIMMYT at the Maize Doubled Haploid Facility in Kunigal, India. (Photo: CIMMYT)
Strengthening the capacity of NARES and SMEs to systematically access and utilize improved maize germplasm is critical for increasing genetic gains in the stress-prone tropics. But partner institutions are at different stages of evolution, which means capacity strengthening must be tailored to institutional strengths and constraints. Â
Accelerated Breeding has been strengthening regional CGIAR-NARES-SME collaborative maize breeding networks via activities such as exchanging elite tropical germplasm (inbred lines, trait donors, and breeding populations) through field days, and widely disseminating CIMMYT maize lines (CMLs) requested by institutions globally. Â
Partners participate in CGIAR maize stage-advancement meetings â they are given access to multi-location trial data and participate in the selection process of promising hybrids to be advanced from the different breeding stages. CGIAR maize teams also assessed the capacity of different NARES institutions, and formulated continuous improvement plans in consultation with respective NARES teams for further support. Â
Better varieties
Systematic integration of new breeding techniques and innovations in CGIAR maize breeding pipelines are leading to better varieties, at a much faster pace, and at lower cost. Given the impacts of climate change, this is indeed the need of the hour. Â
Maize breeders need to respond rapidly to emerging and highly destructive insect-pests and diseases. For instance, the invasion of fall armyworm (FAW) in Africa (since 2016) and Asia (since 2018) has ravaged maize crops across more than 60 countries. CGIAR maize team in Africa responded to this challenge and made progress in identifying diverse sources of native genetic resistance to FAW, resulting in elite hybrids and open-pollinated varieties (OPVs) adapted to African conditions.Â
Since 2017, CIMMY has strengthened the maize insectary capacity of KALRO-Katumani by optimizing the FAW mass rearing protocol and screening of maize germplasm under FAW artificial infestation at Kiboko Station, Kenya. The station now has sixteen 1,000m net houses. The intensive work since 2018 led to identification of FAW-tolerant inbred lines by CIMMYT and their distribution to over 90 public and private institutions in 34 countries.Â
NARES partners across 13 countries in Africa have undertaken national performance trials of three FAW-tolerant hybrids developed by CIMMYT. Kenya, Zambia, Malawi, South Sudan and Ghana released the three hybrids in 2022-23, while several more countries are expected to release these hybrids in the coming months.
Drought and heat tolerant maize ears are harvested through a CIMMYT project. (Photo: J.Siamachira/CIMMYT)
Climate change is also exacerbating maize diseases. Affecting at least 17 countries in the Americas, the Tar Spot Complex (TSC) disease affects maize in the cool and humid regions. It causes premature leaf death, weakens plants, and reduces yields by up to 50%. CIMMYT maize team in Mexico has mapped genomic regions conferring TSC resistance, and is using these markers in breeding programs. Â
The Global South is also particularly vulnerable to drought and high temperature stresses. In the past five years, 20 drought- and heat-tolerant maize hybrids have been released in Asia, including Bangladesh, Bhutan, India, Nepal, and Pakistan. Socio-economic studies in India and Nepal showed that farmers who adopted these hybrids realized higher grain yields, and increased income compared to the non-adopters.Â
In 2022, certified seed production of CGIAR multiple stress-tolerant maize varieties reached 181,119 metric tons in sub-Saharan Africa (from 72,337 tons in 2016). This is estimated to cover ~7.4 million hectares, benefiting over 46 million people in 13 countries.Â
With maize facing unprecedented threats from climate change-induced stresses in the rainfed stress-prone tropics, CGIAR maize breeding programs working closely with NARES and private sector have demonstrated remarkable success in breeding as well as deploying climate resilient maize. These efforts rely on better processes and modern breeding tools, leading to drastically reduced breeding cycle time, cost saving, and improved efficiency. Â
The resulting improved varietiesâresilient to major environmental stresses, diseases and insect-pestsâare increasingly adopted by smallholders across sub-Saharan Africa, South Asia, and Latin America, showing that tomorrow is already here. The work continues to ensure that maize remains a constant source of food security and prosperity for generations to come in the tropical regions.
Across all production environments in Kenya, early-maturity products demonstrate strong sales. This was revealed in a recent study by the CGIAR Initiative on Market Intelligence. During the long-rains season, farmers in higher rainfall production environmentsâwet, mid and high altitudesâpurchased early-maturity seed products despite potentially lower yields. Also, the short-rains season, which represents almost one-fourth of total maize seed sales, was dominated by early-maturity products.
These insights were obtained through a panel of maize-seed sales data from 722 agrodealers in Kenya during two short-rains seasons and three long-rains seasons in 2020â2022. The study also offers insights into the extent the maturity level of seed products, purchased by farmers in Kenya, aligns with the production environment where they were sold. Market Intelligence applies eight criteria to identify seed product market segments (SPMSs) for CGIAR crop breeding. In the application of these criteria to maize in East Africa, two conditions distinguish the segments: production environment and maturity level. The other criteria do not vary. A key indicator for prioritizing breeding investments across segments is the relative size of SPMSs. In the case of maize, and other crops, teams generally use geospatial data to identify the area of production environments, with the assumption that farmers in each production environment would use the seed product with the maturity level designed for that environment.
The paper contends that a stronger focus on using sales data to inform breeding decisions in maize, and potentially other crops where retailers play an important role in seed distribution, should become a priority for market intelligence. Future work will engage stakeholders in maize seed systems in other countries of East Africa about the changes in demand for earlier-maturing products and the implications for segmentation.
The CGIAR Initiative on Market Intelligence (âMarket Intelligenceâ for brevity) represents a new effort to engage social scientists, crop-breeding teams, and others to work together toward the design and implementation of a demand-led breeding approach. In 2022, the Market Intelligence Brief (MIB) series was created as a valuable communication tool to support informed decision making by crop breeders, seed-system specialists, and donors on future priorities and investments by CGIAR, NARS, the private sector, and non-governmental organizations (NGOs).
The author would like to thank all funders who supported this research through their contributions to the CGIAR Trust Fund. This project received funding from the Accelerating Genetic Gains in Maize and Wheat project (AGG) [INV-003439], funded by Bill & Melinda Gates Foundation; Foundation for Food & Agriculture Research (FFAR); United States Agency for International Development (USAID); and United Kingdomâs Foreign, Commonwealth & Development Office (FCDO).
CIMMYT and partners in Kenya recently marked the 10th anniversary of two major facilities that have been crucial for maize breeding in sub-Saharan Africa. The Maize Doubled-Haploid (DH) facility and the Maize Lethal Necrosis (MLN) screening facility at the Kenya Agriculture and Livestock Research Organization (KALRO) centers in Naivasha and Kiboko, respectively, have made immense contributions to the rapid development of higher-yielding, climate-resilient and disease-resistant maize varieties for smallholder farmers across the continent.
An aerial photo of the Naivasha Research Center. (Photo: CIMMYT)
âThese two facilities have been instrumental in furthering KALROâs mission to utilize technology in the service of Kenyaâs smallholder farmers,â said KALRO Director General/CEO, Eliud Kireger. âThey also exhibit the spirit of cooperation and collaboration that is necessary for us to meet all the challenges to our food systems.â
âDeploying a higher yielding maize variety may not be impactful in eastern Africa if that variety does not have resistance to a devastating disease like MLN,â said CIMMYTâs Director General Bram Govaerts. âThese two facilities demonstrate the holistic methods which are key to working towards a more productive, inclusive and resilient agrifood system.â
Maize DH facility
Hybrid maize varieties have much higher yields than open-pollinated varieties and are key to unlocking the agricultural potential of maize producing countries. The doubled haploid process is an innovative technology producing within a year genetically true-to-type maize lines that serve as building blocks for improved maize hybrids.
Unlike conventional breeding, which takes at least 7 to 8 generations or crop seasons to develop parental lines, DH lines are generated within two seasons, saving significant time, labor and other resources. DH maize lines are highly uniform, genetically stable, and are more amenable to the application of modern molecular tools, making them perfect resources for breeding elite maize hybrids.
Workers in the Kiboko Double Haploid facility. (Photo: CIMMYT)
The aim of CIMMYTâs maize DH facility is to empower the breeding programs throughout the low-and middle-income countries in Africa by offering a competitive, accessible, not-for-profit DH production service that will accelerate their rate of genetic gain and fast-track development of improved maize varieties for farming communities.
Since 2017, the DH facility has delivered 280,000 DH lines from 1,840 populations of which 20% were delivered to public and private sector partners. CIMMYT maize breeding programs and partner organizations have embraced the use of DH technology, with many of the newest maize hybrids released in Africa being derived from DH lines. The facility has also served as a training ground so far for over 60 scientists and hundreds of undergraduate students in modern breeding technologies.
âBefore 2013, DH technology was mainly employed by private, multinational corporations in North America, Europe, Asia and Latin America,â said CIMMYTâs DH Facility Manager, Vijay Chaikam. âBut the DH facility operated by CIMMYT at the KALRO Kiboko research station is specifically targeted at strengthening the maize breeding programs by the public sector institutions as well as small-and medium-size enterprise seed companies in Africa.â
The maize DH facility at Kiboko, Kenya, was established with funding support from the Bill & Melinda Gates Foundation and inaugurated in September 2013. The facility includes an administrative building, seed quality laboratory, training resources, artificial seed dyer, a cold-storage seed room, a chromosome doubling laboratory, greenhouse and a state-of-the-art irrigation system to support year-round DH production in the 17-hectare nursery.
MLN screening facility
MLN is a devastating viral disease that can decimate farmersâ fields, causing premature plant death and unfilled, poorly formed maize ears, and can lead to up to 100 percent yield loss in farmersâ fields. Though known in other parts of the world for decades, the disease was first identified in eastern Africa in 2011. By 2015, MLN had rapidly spread across eastern Africa, including Kenya, Uganda, Tanzania, South Sudan, Rwanda, Democratic Republic of Congo and Ethiopia. CIMMYT scientists quickly discovered that almost all the commercial maize cultivars in eastern Africa were highly susceptible to the disease.
Against this backdrop, CIMMYT and KALRO recognized the urgent need for establishing a screening facility to provide MLN phenotyping service and effectively manage the risk of MLN on maize production through screening of germplasm and identifying MLN-resistant sources. The facility was built with funding support from the Bill & Melinda Gates Foundation and the Syngenta Foundation for Sustainable Agriculture, and inaugurated in September 2013.
Resistant and susceptible line at the Maize Lethal Necrosis facility. (Photo: CIMMYT)
âThe MLN screening facility is a key regional resource in breeding for resistance to a devastating viral disease. The facility is indeed one of the key factors behind successful management of MLN and helping stem the tide of losses in eastern Africa,â said Director of the Global Maize Program at CIMMYT and One CGIAR Plant Health Initiative, B.M. Prasanna. âFighting diseases like MLN, which do not respect political boundaries, requires strong regional and local collaboration. The successes achieved through the MLN Screening facility in the past 10 years embody that spirit of collaboration.â Indeed, farmers in the region now have access to over twenty genetically diverse, MLN-tolerant/resistant maize hybrids released in eastern and southern Africa.
The facility is the largest dedicated MLN screening facility in Africa and has evaluated over 230,000 accessions (over 330,000 rows of maize) from CIMMYT and partners, including over 15 national research programs, national and multinational seed companies. The facility covers 20 hectares, of which 17 hectares are used for field screening of germplasm. Dedicated laboratories and screen houses cover the remaining 3 hectares.
âMLN phenotyping service is conducted under stringent quarantine standards and the high-quality data is shared with all the CGIAR and public and private partners. The MLN screening service has helped breeding programs across the continent, aided in undertaking epidemiological research activities, and supported capacity building of students from diverse institutions, and regional stakeholders regarding MLN diagnosis and best management practices,â said CIMMYTâs Maize Pathologist in Africa, L.M. Suresh.
âThe output of MLN resistant lines and hybrids has been remarkable,â said Director of Phytosanitary and Biosecurity at the Kenya Plant Health Inspectorate Service (KEPHIS), Isaac Macharia. âAnd the facility has strictly adhered to quarantine regulations.â
In Uganda, the MLN facility was crucial in the ârelease of the first-generation MLN tolerant hybrids and dissemination of MLN knowledge products that minimized the economic impact of MLN,â said the Director of Research of the National Crops Resources Research Institute, Godfrey Asea.
Peter Mbogo, maize breeder with Seed Co Group, said, âThis is the only quarantine facility in the world where you can screen against MLN under artificial inoculation. It has been an excellent return on investment.â
CIMMYT, in partnership with CGIAR and Viamo, introduced an Interactive Voice Response (IVR) service named “Suchanako Sansaar,” translating to ‘World of Information,’ in Sukhet, Nepal.
East and Southern Africa is a climate hotspot, with more than US$45 billion in agricultural production at risk from higher temperatures, shorter growing seasons and more extreme droughts and floods. Maize, a staple crop covering up to 75% of cropland in parts of the region, is particularly vulnerable and is projected to face yield declines of 15%, among other climate impacts if no adaptation measures are taken. Many of the affected areas already have serious levels of hunger and malnutrition, with the highest burden experienced by women and youth from marginalized and vulnerable communities. If these systems are sustainably diversified, they can contribute to stabilizing regional and global agrifood systems.
The next decade will be critical for strengthening food, land and water systems in East and Southern Africa. The agribusiness ecosystem for both regions has been identified as a critical engine for agricultural and economic development, climate change adaptation and gender and youth empowerment. Investment in innovation, capabilities and supportive environments will be essential for driving sustainable growth.
Objective
This Initiative aims to support climate-resilient agriculture and livelihoods in 12 countries in East and Southern Africa by helping millions of smallholders intensify, diversify and reduce the risks in maize-based farming through improved extension services, small and medium enterprise development, supporting governance frameworks and increased investment with a gender and social inclusion lens.
Activities
This objective will be achieved through:
Diversifying and sustainably intensifying production by assessing needs and options for the introduction of crops, livestock, mechanization and irrigation, applying innovations in value chains and building capacity while scaling to larger farming communities.
Reducing risk and digitalizing value chains by co-designing and delivering âInnovation Packageâ bundles of digital agro-advisory systems and research management products â including mobile apps, TV programs and social media â to build resilience and improve productivity.
Supporting and accelerating value chain business enablers in maize mixed systems by using CGIARâs expertise and partner network to unlock access to funding, investment and tailored technical assistance.
Promoting the governing and enabling of multifunctional landscapes for sustainable diversification and intensification with a focus on strengthening the evidence base for decision-makers.
Empowering and engaging women and youth in agribusiness ecosystems by mapping challenges and opportunities to address gender and social inequality and applying inclusive and coordinated interventions for transformative change.
Scaling innovations and coordinating CGIAR and partner activities in the region through a scaling hub that uses the âscaling readinessâ approach to inform, activate and bring to scale innovations that respond to regional or country demand.
Since 2021, CIMMYT, in partnership with the International Livestock Research Institute (ILRI), the French Agricultural Research Centre for International Development (CIRAD), and the University of Zimbabweâs Department of Veterinary, has been working in rural communities of Zimbabwe, as part of the Livestock Production Systems in Zimbabwe (LIPS-Zim) project. The activity is led by Zimbabwe’s Department of Research and Specialist Services and is at the forefront of introducing new agricultural innovations to local farmers.
One of their most impactful initiatives has been the intercropping trials involving maize and various legumes including jack bean, mucuna, lablab, and pigeon pea. This groundbreaking approach has not only transformed the lives of farmers but has also had a positive impact on the overall health of livestock.
Various leguminous fodder crops have been promoted widely as sources of high-quality protein feed in mixed crop-livestock systems of Zimbabwe. However, to diversify and increase the options for the drier regions, the LIPS-Zim project is testing new leguminous crops such as jack bean and pigeon pea, which are well-adapted to dry conditions.
Intercropping trials with jack bean and maize (Photo: CIMMYT)
Netsai Musekiwa, a farmer in the town of Mutoko, has been part of the LIPS-Zim project for the past two seasons, and is currently conducting intercrop trials with jack bean. âSince I started intercropping maize with jack bean, I have been amazed by the results and will continue on this path. The jack bean plants have shown strong tolerance to prolonged dry spells and heat stress,â she said. âNext season, I plan to extend my plot to harvest more jack bean.â These words of encouragement on intercropping maize with jack bean have also been largely echoed by many other farmers in Mutoko and Buhera during the feedback meetings held in October 2023.
What is intercropping and how beneficial is it to farmers?
Intercropping is an agricultural practice of growing two or more crops together on the same field simultaneously to maximize land use and enhance productivity. As different crops have different growth patterns and nutrient requirements, intercropping can help optimize resource utilization and boost overall crop output.
In addition, intercropping reduces the risk of climate induced crop failure as well as minimizing pest damage, enhances soil fertility by diversifying the root system, and can provide additional income streams to farmers.
The science behind jack bean and pigeon pea
Jack bean (canavalia ensiformis) and pigeon pea (cajanus cajan) are leguminous crops valued for their nitrogen-fixing abilities which aides in improving soil fertility. Both jack bean and pigeon pea have deep root systems, making them ideal candidates for the dry semi-arid conditions in Zimbabwe.
Pigeon pea is known for its drought-tolerance and produces edible seeds used in various culinary dishes and is a source of both food and feed. Jack bean is used as a forage crop for livestock, providing nutritious feed.
âJack bean seeds contain a toxic compound called canavanine, which can be harmful when consumed in large quantities or not properly processed. To make jack beans safe for consumption, it must be boiled, soaked, or fermented,â said Isaiah Nyagumbo, cropping systems agronomist at CIMMYT. âWe have introduced many farmers to the best practices for handling jack beans and have opened up new possibilities for its utilization in sustainable farming practices.â
While some farmers were intercropping with jack bean, others explored pigeon pea as an alternative. âI liked the intercropping of maize and pigeon pea on my plot. I am assured of getting nutritious food both for my family and livestock. After harvesting, I usually take the branches, then put them in the shade and dry them to retain the nutritional value. I occasionally give some to my goats during the dry season when feed from natural pastures is scarce, and my goat herd has risen to 12 goats,â said Fungai Kativu, a farmer in Mutoko.
Building capacity of local farmers
To narrow the knowledge gap and highlight the potential of such feed options, LIPS-Zim has also been spearheading the establishment of community level learning centers. These centers are a knowledge hub to local farmers, providing practical knowledge, facilitating the sharing of different perspectives while nurturing working as groups with a common vision. This âfarmer learns by seeingâ approach has been a success in the community.
Through this initiative, farmers have not only witnessed increased productivity but have also gained the necessary skills and knowledge to adapt to the changing agricultural landscape. âIntercropping leguminous crops with maize has shown great potential in improving food security and livestock feed production in Zimbabwe’s farming communities, especially in areas prone to heat and drought,â said Nyagumbo.
CIMMYT is happy to announce five 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.
How does CIMMYTâs improved maize get to the farmer?
Intermediate-maturing, yellow, high-yielding, resistant to GLS, and Ear rots.
The newly available CIMMYT maize hybrids were identified through rigorous, years-long trialing and a stage-gate advancement process which culminated in the 03-22LTHTWM4M, 04-22LTHTYM4M, 01-22MASTCHSTW and 02-22MASTCHSTY Stage 5 Trials. The products were found to meet the stringent performance and farmer acceptance criteria for CIMMYTâs breeding pipelines that are designed to generate products tailored in particular for smallholder farmers in stress-prone agroecologies of Latin America.
The deadline to submit applications to be considered during the first round of allocations is December 1st, 2023. Applications received after that deadline will be considered during subsequent rounds of product allocations.
The Seed Production Technology for Africa (SPTA) project, led by CIMMYT, has been selected by the CGIAR Gender Impact Platform as a successful case study of integrating gender into crop breeding.
The case study, published in Frontiers in Sociology, is one of fourteen that the CGIAR Genetic Innovation Gender strategy is drawing on to showcase lessons learned from practical experience. These case studies form a critical part of the efforts to pursue gender responsive or gender-intentional breeding and explore how these can inform larger breeding pipelines.
Maize is widely grown by both women and men in Africa. Evidence of gender-differentiated preferences for maize varieties remains inconclusive; however, there is evidence of gendered differences in management practices. Hybrids produced using SPTA segregate 1:1 for pollen producing and non-pollen producing plants referred to as 50% non-pollen producing (FNP) varieties. Previous research showed FNP offered a yield benefit under low input conditions. In the early stage of its inception, the project quickly recognized the potential implications of hybrids produced using SPTA for women and other resource-constrained smallholders in Africa.
Understanding gender-based differences
From the start, the SPTA team conducted a gender review that underscored the fact that women in the region often use less fertilizer than men, a challenge that is further compounded by cultivation of smaller plots and lower quality soils. This review led the breeding team to explicitly target women and resource-poor farmers with an ambition to increase yields on womenâs fields. From here henceforth, SPTA made it a priority to understand gender-based differences in performance and preference for new FNP maize varieties. This process involved ensuring both women and men farmers host trials to evaluate and attest to the performance of the FNP hybrids.
But these efforts were not without challenges. The team also found significant gender differences, particularly among women farmers in crop management practices and between farmersâ stated preferences during participatory varietal selection exercises and the varieties they used at home. This suggested that initial on-farm evaluations were not adequate for predicting real world demand for varieties. Moving forward, the evaluation strategy of SPTA evolved to enable variety evaluations under farmersâ preferred management practices.
The success of the SPTA team in ensuring that gender considerations were strongly embedded into the breeding program is attributed to strong collaboration across disciplines that included social scientists and gender researchers working closely with breeders, allocating funding to allow exploration, testing of gender topics and responsive variety evaluation tools and strong buy-in from leadership and donors. As the SPTA case highlights, there is value in starting small, building productive partnerships and collaborating to pilot and develop proof of concept for new models.
It is a winter morning in Ward 12 of Mutare Rural district in Zimbabwe. Farmers brave the cold weather to gather around several tents lined with a range of new agricultural machinery. The number of farmers increases, and the excited chatter gets louder as they attempt to identify the different machines on display. âThat is a tractor, but it just has two wheels,â says one farmer. With enthusiasm, another identifies a multi-crop thresher and peanut butter machine and asks for the prices.
The scene typifies one of several settings for an awareness meeting conducted under the Feed the Future Zimbabwe Mechanization and Extension (Mechanization) Activity, funded by the United States Agency for International Development (USAID). The project operates in Zimbabweâs Manicaland and Masvingo provinces and addresses the pressing need to improve farm power and machinery access for smallholder farmers in ten districts: Buhera, Chimanimani, Chipinge, Mutare rural, Bikita, Chiredzi, Chivi, Masvingo rural, Mwenezi and Zaka.
Awareness meetings provide community members the opportunity to interact with the Mechanization Activity Team and learn more about the machinery suitable for their farm operations. (Photo: CIMMYT)
In recent years, farmers in the region have faced a decline in cattle populations due to tick-borne diseasesâthe devastating âJanuary diseaseâ (Theileriosis) hitting hardestâcausing significant draft power losses. In addition, on-farm and off-farm activities have notoriously been identified as labor-intensive, time consuming and back-breaking due to the level of effort required to execute certain tasks. Activities such as post-harvest processing have also been traditionally carried out by women, who are thus disproportionally affected by drudgery. Collectively, these challenges have affected not only food production and the quality of farm yields, but also drastically impacted farming familiesâ potential to realize sufficient household food and income security.
âFinding the best model of extension of appropriate machinery and developing financing mechanisms for smallholder farmers has been the work of previous projects on appropriate-scale mechanization,â says Christian Thierfelder, research director for the Mechanization Activity. âIn this activity, we are implementing a service provider model in Zimbabwe and are aiming to reach 150 service providers and 22,500 users of these machines in the next two years.â
Despite previous successes under initiatives such as FACASI and R4/ZAMBUKO, there remains a huge demand for affordable machines that improve farm labor and generate income for smallholder farmers. âWe already see hundreds of farmers demanding to mechanize agricultural activities in our intervention areas,â explains Leon Jamann, chief of party for the project. âThat is why our activity aims to collaborate with banks and microfinance institutions to bank these farmers at fair rates so that they can buy the machinery that they need and want.â
A launchpad for success
The awareness meetings have served as launchpads to acquaint farmers with appropriate machinery right at the âfarm gateâ while affording them a chance to explore the full range on offer. Since its inception, the Mechanization Activity has showcased through live demonstrations the operation and performance of machinery including the two-wheel tractor and trailer, ripper, basin digger, boom sprayer, multi-crop thresher, feed chopper-grinder, groundnut sheller and peanut butter machine. Each machine harmonizes with on-farm and off-farm activities, easing the labor burden and improving efficiency in land preparation, harvesting and post-harvest tasks. The aim is to create demand for and trigger business interest in the machinery through a service provision model.
The model centers on the service provider, typically an individual who owns machinery and extends their services to others for a fee. In some cases, organized Internal Savings and Lending (ISAL) and Production, Productivity Lending and Savings (PPL) groups have expressed, through the awareness meetings, interest in procuring a machine for use within the group. This symbiotic relationship empowers service providers economically, while granting communities access to crucial services that improve their land and labor productivity.
In the next step, service providers are then linked with banks to finance their machinery. This ensures a sustainable approach, as the mechanization solutions are locally produced, financed and used. Enhancing these local capacities and linkages is at the core of the activity and ensures impact beyond the project life cycle.
From awareness to demand
So far, a total of 32 awareness meetings have been held across three operational hubs in Masvingo and Manicaland provinces reaching 1,637 farmersâ843 females and 794 males. The impact is evident, with 475 service providers identified across 20 implementation wards.
232 participants are keen to acquire a two-wheel tractor, with a further 191 opting for trailers, 63 for rippers, 125 for multi-crop threshers, 166 for chopper grinders, 178 for peanut butter machines and 31 for groundnut shellers. Among the prospective service providers are those opting to purchase a single unit while others are choosing two, three or more units from the machinery on offer.
Beyond the numbers, the Mechanization and Extension Activity continues to appeal to women and youth through sustainable and climate-smart intensification of crop production using conservation agriculture practices, opportunities for employment creation and enhancing profitability.
Graduate intern Titos Chibi demonstrates the two-wheel tractor during an awareness meeting in Ward 10 in Bikita. (Photo: CIMMYT)
âI enjoyed learning about the service provider approach and learning about the machinery on display,â reflected Nyarai Mutsetse, a female farmer from Ward 12. âOther women even got the chance to try out the two-wheel tractor. From now on, we are going to save money in our groups and purchase some of these machines.â
Echoing the same sentiments, Patience Chadambuka was fascinated by the two-wheel tractor demonstration, and impressed that it could serve multiple purposes. âI can use it for different tasksâferrying wood, land preparation and it can also help us raise money to take our children to school through service provision,â she said. âWe are beginning to save the money, together with my husband because we would like to purchase the tractor and use it for our business.â
The Mechanization Activity awareness meetings paint a vivid picture of collaboration with other Feed the Future Zimbabwe Activities such as the Fostering Agribusiness for Resilient Markets (FARM), Resilience Anchors and Farmer to Farmer, among others. The activity harmonizes smallholder farmers with private sector enterprises, including machinery manufacturers, local mechanics, financial institutions and the Government of Zimbabwe. This collective cooperation is pivotal in helping smallholder farmers realize their mechanization business goals.
One of the worldâs largest crop pathogen surveillance systems is set to expand its analytic and knowledge systems capacity to protect wheat productivity in food vulnerable areas of East Africa and South Asia.
Researchers announced the Wheat Disease Early Warning Advisory System (Wheat DEWAS), funded through a $7.3 million grant from the Bill & Melinda Gates Foundation and the United Kingdomâs Foreign, Commonwealth & Development Office, to enhance crop resilience to wheat diseases.
The project is led by David Hodson, principal scientist at CIMMYT, and Maricelis Acevedo, research professor of global development and plant pathology at Cornell Universityâs College of Agriculture and Life Sciences. This initiative brings together research expertise from 23 research and academic organizations from sub-Saharan Africa, South Asia, Europe, the United States and Mexico.
Wheat DEWAS aims to be an open and scalable system capable of tracking important pathogen strains. The system builds on existing capabilities developed by the research team to provide near-real-time model-based risk forecasts and resulting in accurate, timely and actionable advice to farmers. As plant pathogens continue to evolve and threaten global food production, the system strengthens the capacity of countries to respond in a proactive manner to transboundary wheat diseases.
The system focuses on the two major fungal pathogens of wheat known as rust and blast diseases. Rust diseases, named for a rust-like appearance on infected plants, are hyper-variable and can significantly reduce crop yields when they attack. The fungus releases trillions of spores that can ride wind currents across national borders and continents and spread devastating epidemics quickly over vast areas.
Wheat blast, caused by the fungus Magnaporte oryzae Tritici, is an increasing threat to wheat production, following detection in both Bangladesh and Zambia. The fungus spreads over short distances and through the planting of infected seeds. Grains of infected plants shrivel within a week of first symptoms, providing little time for farmers to take preventative actions. Most wheat grown in the world has limited resistance to wheat blast.
âNew wheat pathogen variants are constantly evolving and are spreading rapidly on a global scale,â said Hodson, principal investigator for Wheat DEWAS. âComplete crop losses in some of the most food vulnerable areas of the world are possible under favorable epidemiological conditions. Vigilance coupled with pathogen-informed breeding strategies are essential to prevent wheat disease epidemics. Improved monitoring, early warning and advisory approaches are an important component for safeguarding food supplies.â
Previous long-term investments in rust pathogen surveillance, modelling, and diagnostics built one of the largest operational global surveillance and monitoring system for any crop disease. The research permitted the development of functioning prototypes of advanced early warning advisory systems (EWAS) in East Africa and South Asia. Wheat DEWAS seeks to improve on that foundation to build a scalable, integrated, and sustainable solution that can provide improved advanced timely warning of vulnerability to emerging and migrating wheat diseases.
âThe impact of these diseases is greatest on small-scale producers, negatively affecting livelihoods, income, and food security,â Acevedo said. âUltimately, with this project we aim to maximize opportunities for smallholder farmers to benefit from hyper-local analytic and knowledge systems to protect wheat productivity.â
The system has already proven successful, contributing to prevention of a potential rust outbreak in Ethiopia in 2021. At that time, the early warning and global monitoring detected a new yellow rust strain with high epidemic potential. Risk mapping and real-time early forecasting identified the risk and allowed a timely and effective response by farmers and officials. That growing season ended up being a production record-breaker for Ethiopian wheat farmers.
While wheat is the major focus of the system, pathogens with similar biology and dispersal modes exist for all major crops. Discoveries made in the wheat system could provide essential infrastructure, methods for data collection and analysis to aid interventions that will be relevant to other crops.
India can applaud a hallmark in national food production: in 2023, the harvest of wheatâIndiaâs second most important food cropâwill surpass 110 million tons for the first time.
This maintains India as the worldâs number-two wheat producer after China, as has been the case since the early 2000s. It also extends the wheat productivity jumpstart that begun in the Green Revolutionâthe modernization of Indiaâs agriculture during the 1960s-70s that allowed the country to put behind it the recurrent grain shortages and extreme hunger of preceding decades.
âNewer and superior wheat varieties in India continually provide higher yields and genetic resistance to the rusts and other deadly diseases,â said Distinguished Scientist Emeritus at CIMMYT, Ravi Singh. âMore than 90 percent of spring bread wheat varieties released in South Asia in the last three decades carry CIMMYT breeding contributions for those or other valued traits, selected directly from the Centerâs international yield trials and nurseries or developed locally using CIMMYT parents.â
Wheat grain yield in Indian farmersâ fields rose yearly by more than 1.8 percentâsome 54 kilograms per hectareâin the last decade, a remarkable achievement and significantly above the global average of 1.3 percent. New and better wheat varieties also reach farmers much sooner, due to better policies and strategies that speed seed multiplication, along with greater involvement of private seed producers.
âThe emergence of Ug99 stem rust disease from eastern Africa in the early 2000s and its ability to overcome the genetic resistance of older varieties drove major global and national initiatives to quickly spread the seed of newer, resistant wheat and to encourage farmers to grow it,â Singh explained. âThis both protected their crops and delivered breeding gains for yield and climate resilience.â
CIMMYT has recently adopted an accelerated breeding approach that has reduced the breeding cycle to three years and is expected to fast-track genetic gains in breeding populations and hasten delivery of improvements to farmers. The scheme builds on strong field selection and testing in Mexico, integrates genomic selection, and features expanded yield assays with partner institutions. To stimulate adoption of newer varieties, the Indian Institute of Wheat and Barley Research (IIWBR, of the Indian Council of Agricultural Research, ICAR) operates a seed portal that offers farmers advanced booking for seed of recently released and other wheat varieties.
Private providers constitute another key seed source. In particular, small-scale seed producers linked to the IIWBR/ICAR network have found a profitable business in multiplying and marketing new wheat seed, thus supporting the replacement of older, less productive or disease susceptible varieties.
Farm innovations for changing climates and resource scarcities
Following findings from longstanding CIMMYT and national studies, more Indian wheat farmers are sowing their crops weeks earlier so that the plants mature before the extreme high temperatures that precede the monsoon season, thus ensuring better yields.
New varieties DBW187, DBW303, DBW327, DBW332 and WH1270 can be planted as early as the last half of October, in the northwestern plain zone. Recent research by Indian and CIMMYT scientists has identified well-adapted wheat lines for use in breeding additional varieties for early sowing.
Resource-conserving practices promoted by CIMMYT and partners, such as planting wheat seed directly into the unplowed fields and residues from a preceding rice crop, shave off as much as two weeks of laborious plowing and planking.
Weeds in zero-tillage wheat in India. (Photo: Petr Kosina/CIMMYT)
âThis âzero tillageâ and other forms of reduced tillage, as well as straw management systems, save the time, labor, irrigation water and fuel needed to plant wheat, which in traditional plowing and sowing requires many tractor passes,â said Arun Joshi, CIMMYT wheat breeder and regional representative for Asia and managing director of the Borlaug Institute for South Asia (BISA). âAlso, letting rice residues decompose on the surface, rather than burning them, enriches the soil and reduces seasonal air pollution that harms human health in farm communities and cities such as New Delhi.â
Sustainable practices include precision levelling of farmland for more efficient irrigation and the precise use of nitrogen fertilizer to save money and the environment.
Science and policies ensure future wheat harvests and better nutrition
Joshi mentioned that increased use of combines has sped up wheat harvesting and cut post-harvest grain losses from untimely rains caused by climate change. âAdded to this, policies such as guaranteed purchase prices for grain and subsidies for fertilizers have boosted productivity, and recent high market prices for wheat are convincing farmers to invest in their operations and adopt improved practices.â
To safeguard Indiaâs wheat crops from the fearsome disease wheat blast, native to the Americas but which struck Bangladeshâs wheat fields in 2016, CIMMYT and partners from Bangladesh and Bolivia have quickly identified and cross-bred resistance genes into wheat and launched wheat disease monitoring and early warning systems in South Asia.
âMore than a dozen wheat blast resistant varieties have been deployed in eastern India to block the diseaseâs entry and farmers in areas adjoining Bangladesh have temporarily stopped growing wheat,â said Pawan Singh, head of wheat pathology at CIMMYT.
Building on wheatâs use in many Indian foods, under the HarvestPlus program CIMMYT and Indian researchers applied cross-breeding and specialized selection to develop improved wheats featuring grain with enhanced levels of zinc, a micronutrient whose lack in Indian diets can stunt the growth of young children and make them more vulnerable to diarrhea and pneumonia.
âAt least 10 such âbiofortifiedâ wheat varieties have been released and are grown on over 2 million hectares in India,â said Velu Govindan, CIMMYT breeder who leads the Centerâs wheat biofortification research. âIt is now standard practice to label all new varieties for biofortified traits to raise awareness and adoption, and CIMMYT has included high grain zinc content among its primary breeding objectives, so we expect that nearly all wheat lines distributed by CIMMYT in the next 5-8 years will have this trait.â
A rigorous study published in 2018 showed that, when vulnerable young children in India ate foods prepared with such zinc-biofortified wheat, they experienced significantly fewer days of pneumonia and vomiting than would normally be the case.
Celebrating joint achievements and committing for continued success
The April-June 2018 edition of the âICAR Reporterâ newsletter called the five-decade ICAR-CIMMYT partnership in agricultural research ââŠone of the longest and most productive in the worldâŠâ and mentioned mutually beneficial research in the development and delivery of stress resilient and nutritionally enriched wheat, impact-oriented sustainable and climate-smart farming practices, socioeconomic analyses, and policy recommendations.
Speaking during an August 2022 visit to India by CIMMYT Director General Bram Govaerts, Himanshu Pathak, secretary of the Department of Agricultural Research and Education (DARE) of Indiaâs Ministry of Agriculture and Farmers Welfare and Director General of ICAR, âreaffirmed the commitment to closely work with CIMMYT and BISA to address the current challenges in the field of agricultural research, education and extension in the country.â
âThe ICAR-CIMMYT collaboration is revolutionizing wheat research and technology deployment for global food security,â said Gyanendra Singh, director, ICAR-IIWBR. âThis in turn advances global peace and prosperity.â
India and CIMMYT wheat transformers meet in India in February, 2023. From left to right: Two students from the Indian Agricultural Research Institute (IARI); Arun Joshi, CIMMYT regional representative for Asia; Rajbir Yadav, former Head of Genetics, IARI; Gyanendra Singh, Director General, Indian Institute of Wheat and Barley Research (IIWBR); Bram Govaerts, CIMMYT director general; Harikrishna, Senior Scientist, IARI. (Photo: CIMMYT)
According to Govaerts, CIMMYT has concentrated on strategies that foster collaboration to deliver greater value for the communities both ICAR and the Center serve. âThe way forward to the next milestone â say, harvesting 125 million tons of wheat from the same or less land area â is through our jointly developing and making available new, cost effective, sustainable technologies for smallholder farmers,â he said.
Wheat research and development results to date, challenges, and future initiatives occupied the table at the 28th All India Wheat & Barley Research Workersâ Meeting, which took place in Udaipur, state of Rajasthan, August 28-30, 2023, and which ICAR and CIMMYT wheat scientists attended.
Generous funding from various agencies, including the following, have supported the work described: The Australian Centre for International Agricultural Research (ACIAR), the Bill & Melinda Gates Foundation, the Federal Ministry for Economic Cooperation and Development of Germany (BMZ), the Foreign, Commonwealth & Development Office of UKâs Government (FCDO), the Foundation for Food & Agricultural Research (FFAR), HarvestPlus, ICAR, the United States Agency for International Development (USAID), funders of the One CGIAR Accelerated Breeding Initiative (ABI), and the Plant Health Initiative (PHI).
Intention, collaboration and commitment are critical to bridging the research and practice gap. Gender development practitioners and researchers from CGIAR centers, universities, national agricultural research and extension systems (NARES), civil society, and donor representatives this week shared insights from their research and work at the gender conference in New Delhi, India.
The discussion and exchange promises to create collaborations and opportunities devoted to improving the conditions and agency of women, youth and Indigenous communities in the Global South. âTransformative research can lead to meaningful impact,â said Angela Meentzen, senior gender researcher at CIMMYT. âWe have been looking forward to this conference because coming together as researchers, scientists and development practitioners, we can discuss and share insights from each otherâs practices and experiences from the field.â
Angela Meentzen (third from left) with CIMMYT colleagues from Asia and Africa at the CGIAR Gender 2023 conference in New Delhi. (Photo: Nima Chodon/CIMMYT)
Leading researchers and scientists from CIMMYT Asia and Africa presented their research and enriched the gender discussions at the conference. Meentzen said that CIMMYT is proud to support gender research that contributes meaningfully to transformative change and impact.
Below are highlights of four research poster presentations by our researchers (of the six presented by CIMMYT) at the conference:
Scientist Vijayalaxmi Khed examined how women manage excess workload (working inside and outside the house), a clear trade-off between productive and leisure time without change in domestic responsibilities. Due to domestic workload, she found that womenâs time away from farms does not translate into leisure. Another important finding was that women with more agency had less time for leisure, unlike for men.
In her poster presentation, she concluded that rural womenâs nexus of time poverty and decision-making has âclear implications for the development and diffusion of laborsaving technologies in agriculture.â
Working on the same study with Khed, Vijesh Krishna explored the relationship between womenâs involvement in agricultural activities and decision-making. His presentation, âFarm managers or unpaid laborers?â, from the study covering 347 wheat-farming households across two years, concludes that âdespite playing a crucial role in wheat farming in central India, most women lacked the ability to influence decisions.â
Michael Euler, agriculture and resource economist, in his poster presentation explained how an on-farm trial to improve gender-intentional breeding and varietal adoption in maize was designed by CIMMYT breeders and researchers.
The study hypothesized that gender dynamics in household labor allocation and decision-making in maize systems influence trait preferences and farmersâ adoption of varieties. So, researchers conducted on-farm trials and household surveys with individual women and men household members to capture differences in their trait preferences in maize cultivationâproduction systems, seed demand and seed accessâwith 800 smallholder farmers in Zimbabwe and Kenya.
Euler emphasized the influence of socioeconomic and agroecological factors, including bioticâabiotic stress, in the household decisions on maize varietal adoption.
He concluded that the study results will help âguide the product development of regional maize breeding programs and strengthen communitiesâ adaptation to the changing environmental conditions for maize cultivation.â
Adoption of a weeding technology may lead to labor displacement of marginalized women laborers
Presenting a poster for the same session as Euler, Maxwell Mkondiwaâin a study coauthored with colleagues Khed and Krishnaâhighlighted how rapid diffusion of a laborsaving technology like herbicides could exclude the marginalized further. The study occurred in Indiaâs state of Bihar, looking at nonfarming rural poor, primarily women, from socially marginalized groups.
From data on chemical weeding, the study analyzed the technologyâs impact on inequalityâ highlighting how marginalized women laborers who work on manual weeding are then replaced by men who apply herbicides.
He stressed that not enough research is devoted to understanding whether farmer adoption of laborsaving technologies worsens economic inequalities or reinstates labor into better tasks. âWe hope the evidence we generated will help researchers and policymakers develop relevant actions toward more inclusive innovations, and support laborers with new skills for the transitions,â said Mkondiwa.
Maxwell Mkondiwa presents his poster under the session Gender Dynamics in Agri-Food System Innovation at the CGIAR Gender 2023 conference. (Photo: M Mkondiwa/CIMMYT)
Women exhibit limited technical knowledge and experience social benefits differently in male-headed households of CASI technology adoption
Emma Karki, in her poster, explained that there is limited knowledge of the impact of technology adoption on women in a male-headed household in South Asiaâwith decision powers generally resting with male household members. The research tried to understand the gendered differences in the evaluation of technology adoption in male-headed households using conservation agriculture-based sustainable intensification (CASI) technology as a case study.
The study focused on identifying the commonalities and differences in the experiences and evaluation of CASI technology. Results indicated that âdespite technology adoption, women had limited mechanistic understanding compared to men, with similar limitations on womenâs time use and capacity development,” said Karki.
For future CASI promotion, Karki concluded: âReducing information gaps and incorporating technological preferences of women needs prioritizing, including creating opportunities for them to access knowledge and engage both men and women in critical discussions surrounding gender norms.â
Similarly, Moti Jaletaâs research presentation highlighted the challenges of mechanization adoption for smallholder farmers in Ethiopia, primarily women. âIntentional research, whether in gender or social development, helps identify problems and opportunities for change,â endorsed Jaleta.
Meaningful research helps achieve gender and social inclusion goals
The âFrom Research to Impact: CGIAR GENDER Impact Platform and ICAR Conference 2023â, between October 9-12, 2023, in New Delhi, gathered researchers from 68 countries. In her inaugural address at the conferenceâs opening, the President of India Smt. Draupadi Murmu affirmed, âFor ecologically sustainable, ethically desirable, economically affordable and socially justifiable production, we need research which can enable conditions to reach these goals.â
At the end of the four-day conferenceâwith 60 research presentations and six plenary sessionsâthe organizers and participants reflected on their resolve âFrom Research To Impact,â and the promise to recognize and collectively address the gender and social inequities in agrifood systems development.
Are agroecological approaches, based for example on the use of legumes and manure, enough by themselves to ensure a long-term increase in annual crop yields in sub-Saharan Africa (SSA), without using more mineral fertilizer?
The answer is no, according to a team of agronomists who have published an in-depth analysis of 150 scientific articles on annual crops (maize, sorghum, millet, rice, cassava, etc.) and tropical legumes, both annual grain legumes (cowpea, groundnut) and legume trees (acacia, sesbania) in tropical environments.
These publications collate 50 years of knowledge on nutrient balances in sub-Saharan Africa, biological nitrogen fixation by tropical legumes, manure use in smallholder farming systems and the environmental impact of mineral fertilizer.
âWhen we look at comparable climate conditions and physical soil constraints, yields of maize â the main source of calories for people â in sub-Saharan Africa are three to four times lower than elsewhere in the world. This is largely due to the fact that mineral fertilizer use (nitrogen, potassium) is on average four times lower thereâ, says Gatien Falconnier, a researcher at CIRAD based in Zimbabwe and lead author of the article. âOn average, 13 kg of nitrogen are used per hectare and per year in sub-Saharan Africa, for all crops, bearing in mind that the poorest farmers have no access to nitrogen fertilizers and therefore do not use them. It is mainly agri-business and vegetable farmers that have access to fertilizersâ, adds François Affholder, an agronomist at CIRAD based in Mozambique and co-author of the article.
Maize and cowpea intercropping in the Maravire field. (Photo: CIMMYT)
âOur objective is not to produce like Europe or North America, but to produce more and more regularly according to the seasons and the years, and thus to increase the economic sustainability of our farming systems. To do so, we must ensure a minimum level of nutrients for crops, which require essential mineral elements for efficient photosynthesis, and therefore growth. Soils are typically lacking in mineral elements in sub-Saharan Africa, and the largely insufficient organic inputs lead to nutrient deficiencies in crops. This is the main limiting factor for crop yields, excluding drought situationsâ, says Pauline Chivenge of the African Plant Nutrition Institute (APNI). âThe work by Christian Pieri showed as early as 1989 that it is possible to restore high levels of fertility to African soils through a balanced approach to organic and mineral nutrient inputsâ, says François Affholder.
The article highlights five reasons why more mineral fertilizer is needed in sub-Saharan Africa:
Farming systems are characterized by very low mineral fertilizer use, widespread mixed crop-livestock systems, and significant crop diversity, including legumes. Inputs of mineral elements to crops by farmers are insufficient, resulting in a widespread decline in soil fertility due to soil nutrient mining.
The nitrogen requirements of crops cannot be met solely through biological nitrogen fixation by legumes and manure recycling. Legumes can only fix atmospheric nitrogen if symbiosis with soil bacteria functions correctly, which requires absorption of different mineral elements by the plant. Ken Giller of Wageningen University highlights that the ability of legumes to capture nitrogen from the air through their symbiosis with rhizobium bacteria is a fantastic opportunity for smallholder farmers, âbut the amounts on nitrogen fixed are very small unless other nutrients such as phosphorus are supplied through fertilizersâ.
Phosphorus and potassium are often the main limiting factors of the functioning of plants and living organisms, including symbiotic bacteria: if there is not enough phosphorus and potassium in soils, then there is no nitrogen fixation. These nutrient elements, phosphorus, potassium and micro-elements, need to be provided by fertilizers, since they cannot be provided by legumes, which draw these elements directly from the soil. In the case of manure, this is simply a transfer from grazing areas to cultivated areas, which gradually reduces fertility in grazing areas.
If used appropriately, mineral fertilizers have little impact on the environment. The greenhouse gas emissions linked to nitrogen fertilizer use can be controlled through a balanced and efficient application. In addition, mineral fertilizers can be produced more efficiently in order to reduce the impact of their production on greenhouse gas emissions, keeping in mind that this impact is low, at around 1% of total anthropogenic emissions.
Further reducing mineral fertilizer use in SSA would hamper productivity gains and would contribute directly to increasing food insecurity and indirectly to agricultural expansion and deforestation. Producing for a population that will double by 2050 is likely to require the use of more agricultural land. An extensive strategy thus harms biodiversity and contributes to increasing greenhouse gas emissions, contrary to an agroecological intensification strategy combined with efficient and moderate mineral fertilizer use.
âIf we take account of biophysical production factors, such as climate and soil, and shortages of land and agricultural workers, it will be impossible to reach a satisfactory production level by fertilizing soils only with manure and using legumesâ, says Leonard Rusinamhodzi, an agricultural researcher at the Ghana International Institute of Tropical Agriculture.
However, âagroecological principles linked directly to improving soil fertility, such as recycling of mineral and organic elements, crop efficiency and diversity, with for example agroforestry practices and cereal-legume intercropping, remain essential to improve soil health. Soil fertility is based on its organic matter content, provided by plant growth that determines the biomass that is returned to the soil in the form of roots and plant residues. Efficient mineral fertilizer use starts a virtuous circle. These nutrients are crucial for the sustainability of agricultural productivityâ, says Gatien Falconnier.
The researchers therefore argue for a nuanced position that recognizes the need to increase mineral fertilizer use in sub-Saharan Africa, in a moderate manner based on efficient practices, in conjunction with the use of agroecological practices and appropriate policy support. This balanced approach is aimed at ensuring long-term food security while preserving ecosystems and preventing soil degradation.
The input reduction principle of agroecology is wrong when it comes to mineral fertilizer use in sub-Saharan Africa. Outlook on Agriculture, 0(0). https://doi.org/10.1177/00307270231199795
*CIRAD, CIMMYT, International Institute of Tropical Agriculture (IITA), Wageningen University and the African Plant Nutrition Institute (APNI)
AÂ recent webinar organized by CIMMYT brought together three experts to discuss the importance of millets as key contributors to improving food and nutrition security and resilience to climate change. Offering a wealth of knowledge and insights, the panel discussion was moderated by Kevin Pixley, director of the Dryland Crops Program (DCP), who led a dynamic and engaging discussion highlighting CIMMYT’s work on dryland crops, the climate resiliency and versatility of millets, and biofortification initiatives.
“Millet improvement programs are central to regional dryland crop improvement networksâ, stated Harish Gandhi, breeding lead for DCP. Providing a comprehensive overview of the program, Gandhi emphasized its significance in addressing food and nutrition security as well as climate resilience. “With partners, we are co-designing and co-implementing crop improvement strategies, catalyzing the development of effective and sustainable crop improvement networks”, he said. The dryland crop improvement networks bring together 17 National Agricultural Research and Extension Systems (NARES) in Western, Central, Eastern and Southern Africa working jointly to cultivate the potential and impacts of sorghum, pearl millet, groundnut, cowpea, bean, pigeon pea and chickpea. The program is aligned with CGIAR and the CIMMYT 2030 Strategy to transform agrifood systems through a dense network of impactful partnerships for enhanced sustainability, productivity and profitability.
The climate resiliency and adaptability of millets to arid and semi-arid regions make them a staple for smallholder farmers in Africa. “Millet is a drought-tolerant, climate-resilient crop with profound nutritional benefits. It’s rich in iron, zinc and other essential nutrients, making it a promising food against malnutrition and diet-related diseases”, emphasized Maryam Dawud, project lead at the Lake Chad Research Institute in Nigeria. Highlighting the significance of millets in building resilient agricultural systems, Dawud also explored innovations in millet consumption in diverse food products, including gluten-free options.
Biofortified pearl millets from South Asia and West Africa. (Photo: CIMMYT)
Mahalingam Govindaraj, senior scientist at HarvestPlus-Alliance Bioversity and CIAT, gave insights into crop biofortification, underlining the pressing need for crop nutritional enhancement due to widespread deficiencies, especially in the Global South. He introduced the HarvestPlus developed Biofortification Priority Index (BPI) which enables decision makers to make informed decisions about crop selection, target nutrients and countries. Additionally, Govindaraj highlighted the success of biofortification in enhancing essential micronutrients, especially in pearl millet, and discussed the science, technology and innovations that help to drive the mainstreaming of biofortification within CGIAR and NARES breeding and testing programs.
During the Q&A session, the speakers addressed questions from the audience of more than 150 participants, clarifying misconceptions and expanding on their subjects. Questions from the engaging audience span a wide range of themes and included the significance of different millet types and why they are frequently grouped together; the correlation between zinc and iron content in pearl millets, particularly in relation to their high fiber content; and the strategic approach of dryland crops in supporting capacity building for the NARES, among many other topics.
As the webinar came to a close, it was evident that millets are more than just cereals; they offer a promising solution to a variety of global food system challenges. From their resilience in harsh climates to their rich nutritional value and potential for innovation in various food products, millets stand as a beacon of hope in developing climate-resilient agriculture for a sustainable future.