CIMMYTâs work in Africa helps farmers access new maize and wheat systems-based technologies, information and markets, raising incomes and enhancing crop resilience to drought and climate change. CIMMYT sets priorities in consultation with ministries of agriculture, seed companies, farming communities and other stakeholders in the maize and wheat value chains. Our activities in Africa are wide ranging and include: breeding maize for drought tolerance and low-fertility soils, and for resistance to insect pests, foliar diseases and parasitic weeds; sustainably intensifying production in maize- and wheat-based systems; and investigating opportunities to reduce micronutrient and protein malnutrition among women and young children.
The jury of international scientist experts evaluated twenty-three research projects spanning nine countries on four continents for the 2023 Composite Flour Innovation Award. Sidhar Bhavani, senior scientist, head of Rust Pathology and Molecular Genetics at the International Maize and Wheat Improvement Center (CIMMYT) enriched the jury of the Awards, aimed to highlight the scientific work around the production and processing of non-wheat flours and their blends with wheat flour.
Wondering how these two intersect, a colleague of Baudron once asked him what the link was between an elephant and a tractor?
Now, in the recent report, âAddressing agricultural labour issues is key to biodiversity-smart farming research,â published in Biological Conservation, Baudron and other contributors have answered that question, examining trade-offs between labor and biodiversity conceptually, as well as in the specific context of Indonesia and Ethiopia.
Innovations in agricultural technology have led to undeniable achievements in reducing the physical labor needed to extract food from fields. Farm mechanization and technologies such as herbicides have increased productivity, but also became on the other hand major threats to biological diversity.
Adopting technologies that improve the productivity of labor benefits farmers in multiple ways, including a reduction of economic poverty, time poverty (i.e., lack of discretionary time, reducing labor drudgery), and child labor. Conversely, technologies that promote biodiversity often increase the burden of labor, leading to limited adoption by farmers. Therefore, there is a need to develop biodiversity-smart agricultural development strategies, which address biodiversity conservation goals and socio-economic goals, specifically raising land and labor productivity. This is especially true in the Global South, where population growth is rapid and much of the worldâs remaining biodiversity is located.
âWithout accounting for labor issues biodiversity conservation efforts will not be successful or sustainable,â said Baudron. âBecause of this, we wanted to examine what biodiversity-smart agriculture might look like from a labor point of view.â
Research has quantified that farming families in Africa who use tractors expended an average of 640 labor hours per hectare in maize cultivation. In contrast, farmers not using tractors spent over 1100 hours for the same yield.
Practicing tractor operation at Toluca experiment station (Photo: X. Fonseca/CIMMYT)
Trade-offs
While that is a clear win for reducing the heavy physical toil of farming, there are potential negative effects on biodiversity. In many countries in the Global North, the rise of tractors and other big machinery has led to larger and more rectangular fields and the removal of farm trees and hedgerows, all of which is associated with lower biodiversity. The same is now happening in parts of the Global South.
âA trade-off implies that one goal can only be achieved at the expense of another goal,â said Baudron. âIt is not always a conscious choice; however, as farmers often adopt labor-saving techniques without considering the effects on biodiversity, simply because they lack options, and sometimes the necessary context.â
In Indonesia, the transition from harvesting rubber to producing palm oil has reduced the amount of physical labor, but biological diversity has decreased. However, innovations such as reducing fertilizer usage to avoid nutrient leaching into soil have been possible without compromising yield, and with the benefit of lower costs to farmers.
In Ethiopia, labor-saving technologies like the use of small-scale combine harvesters have been compatible with high biodiversity.
âI tell my colleagues a two-wheel tractor that allows mechanization with little negative environmental consequence (compatible with a mosaic of small, fragmented fields, with on-farm scattered trees, etc.) contributes to a landscape that works for people and biodiversity, including elephants,â said Baudron.
Written by mcallejas on . Posted in Uncategorized.
The Accelerated Varietal Improvement and Seed Delivery of Legumes and Dryland Cereals in Africa (AVISA) project increased demand-driven, gender equitable and timely access to quality seeds and inputs for small-scale producers by strengthening links between seed producers, farmers and grain aggregators, particularly women and young farmers. Partners included national agricultural research and extension systems (NARES), the Syngenta Foundation for Sustainable Agriculture (SFSA), the Center for Behavior Change Communication (CBCC) and the Tanzania Seed Traders Association (TASTA).
The project, which involved 188 NARES scientists from nine countries in East and Southern Africa (ESA) and West and Central Africa (WCA), tested different impact pathways to improve the scalability of dryland crop innovations. They identified 58 regional market segments for crops such as sorghum, pearl millet, finger millet, groundnut, chickpea and pigeonpea, of which 28 were prioritized for breeding pipelines. Target product profiles were consolidated and priority traits were addressed through a crop health/pathology network. Breeding programs were implemented through shared pipelines, regional trials were conducted and 2,461 farmers participated in tricots.
Efforts included the formation of a cowpea WCA working group, the identification of 26 common bean market segments in East Africa, and the implementation of awareness and demand generation activities using a variety of promotional methods. Data-driven decisions were prioritized, resulting in the creation of breeding informatics teams, quality assurance/control pipelines, and digitization templates.
The project also established governance structures and steering committees for the two target regions in sub-Saharan Africa, as well as operational committees and elected representatives to ensure the functioning and sustainability of the CGIAR-NARES dryland crops network.
In addition, the project targets the Sustainable Development Goals: SDG 2 – Zero Hunger; SDG 13 – Climate Action; SGD 17 – Partnerships for the Goals.
The recently concluded Sorghum Conference brought together researchers, scientists, and experts from around the world to discuss the potential and challenges associated with this resilient crop. Participants shared their key takeaways, experiences, and insights during the event, shedding light on the importance of sorghum and its potential applications.
The International Maize and Wheat Improvement Center (CIMMYT) demonstrated valuable insights and technological advances in a variety of sessions, helping to shape the future of sorghum cultivation and products. CIMMYT has initiated a crop improvement program, known as the Dryland Crop Program (DCP) focusing on sorghum, millet, chickpea, pigeon pea and groundnuts. The program is establishing a network with stakeholders in 17 countries in Africa to collaboratively create, develop, and implement a crop improvement network. This approach will enable CIMMYT and the network to identify suitable products for specific market segments, establish joint breeding pipelines, conduct germplasm testing, and ultimately release and scale up superior seed varieties, thereby improving the quality and yield of these dryland crops, ensuring food security, and promoting sustainable agricultural practices.
Among the speakers and presenters at the conference were six National Agricultural Research Extension Systems (NARES) partners. They presented their findings, addressing critical topics such as adaptation genetics and genomics, climate and environmental change, sorghum yield optimization techniques, and the development of new sorghum products for human consumption.
These are some of their reflections:
Exploring the diverse applications of sorghum
Henry Nzioka from Kenya Agricultural and Livestock Research (KALRO) focused on the resiliency, adaptability, and versatility of sorghum. He appreciated the presentations that highlighted the resilience of sorghum in harsh environments. His research presentation focused on biological control measures and genetic resistance for managing the striga weed in sorghum. His findings aligned with one of the objectives of the conference, which was to develop climate-aware weed management technologies. Nzioka acknowledged the need to bridge the gap between research and the various actors in the sorghum value chain. In addition, he gained valuable knowledge regarding the application of modeling tools and farmer research networks.
âThe knowledge gained here can contribute to the advancement of sorghum-related industries or research. However, its relevance will be country specific as different countries have different preferences and it may also depend on level of technological advancement of respective countries. Countries can be provided with a basket of options from which they can pick the best bet for advancement.â
Charles Bett engages a participant in conversation during his poster presentation (Photo: Marion Aluoch/CIMMYT)
The importance of collaboration and the potential of sorghum
Charles Bett of KALRO, commended the high quality of the research papers and posters presented and emphasized the event’s timeliness and extensive use of technology. Bett was motivated by the research methodologies employed by other participants and gained new insights that he intends to incorporate into his own work. He summarized the impact of the conference as the realization of sorghum’s enormous potential for reducing food and nutrition insecurity and boosting household incomes. Bett presented on the evaluation of agricultural mechanization levels in the sorghum value chain, which aligned with the conference’s goal of reducing losses and increasing productivity. His reflections and lessons learned include the necessity of a broader coverage of thematic areas at future conferences and the dissemination of existing sorghum technologies to address productivity limitations. âWhile it is important to continue working on technology development, more efforts should be put on dissemination of existing technologies and address productivity depressing constraints.â
Promoting Sorghum as the future crop
Baba Haoua from INRAN, Niger emphasized the future potential of sorghum. The presentations and discussions inspired him and reinforced his belief that sorghum is destined to become a major player in the global agricultural landscape. Haouaâs own research on dual-purpose sorghum perfectly aligns with the objectives of the conference and he left the event knowledgeable and well-connected, eager to continue his work with vigor.
Promoting agroecological transition and regional research on sorghum
Assitan Daou, from the Institut dâEconomie Rurale (IER) in Mali emphasized the suitability of sorghum as a crop for growing populations in varying climates and the significance of an agroecological transition for adaptation to climate change. His poster presentation centered on sorghum cropping systems under rainfed conditions, which aligned with the conference’s goals of increasing crop productivity, adapting to climate variations, and bolstering the resilience of small-scale farmers. He considers the viability of sorghum production, the breaking of boundaries in the sorghum value chain, and the factors driving future sorghum demand. The exchange with other researchers, as well as the opportunity to improve his communication skills and establish contacts for future collaboration, satisfied Daou’s expectations for the conference. He learned new research techniques, such as crop modeling, and believes the knowledge he gained at the conference will advance sorghum-related industries and research.
A photo with a participant on a poster presentation by Haoua Baba (Photo: Marion Aluoch/CIMMYT)
Recognizing the resilience and potential of sorghum
Rekiya Abdoulmalik, from the Institute of Agriculture Research (IAR) in Nigeria, presented about the stability evaluation of recently released dwarf sorghum lines, which aligned with the conference’s objective of revealing the genetic potential of sorghum in various environments. The conference motivated her to explore new ideas and directions for her research, particularly regarding the significance of root system architecture for drought resistance. She left the conference with new knowledge and a vision for climate-smart sorghum varieties that can meet food and feed requirements.
Exposing the economic worth of sorghum
Alex Zongo, from the Institut de l’Environnement et des Recherches Agricoles (INERA) / CNRST in Burkina Faso, was inspired by the conference to shift the focus of his research to understanding the value of sorghum for inclusive and sustainable agriculture. He gained a deeper understanding of sorghum’s uses, such as in baking, brewing, and animal feed. Zongo was inspired by the conference to investigate the economic contribution of sorghum and increase stakeholder awareness. âNew knowledge shows that crop association (which mobilizes sorghum to a greater extent) helps to stabilize crop yields through soil fertility management. We therefore need to study its economic contribution.â
Scientists, researchers and stakeholders from around the world gathered at the global sorghum conference from June 5-9, 2023, in Montpellier, France, to discuss the latest developments in sorghum research, innovation, challenges and sustainable practices in the face of climate change.
The Dryland Crops Program (DCP) partners pose for a group photo at the Sorghum Conference (Photo: Marion Aluoch/CIMMYT)
Participating as a sponsor, the International Maize and Wheat Improvement Center (CIMMYT) demonstrated valuable insights and technological advances in a variety of sessions. Two CIMMYT representatives and six National Agricultural Research Extension Systems (NARES) partners, presented findings, addressing critical topics such as adaptation genetics and genomics, climate and environmental change, sorghum yield optimization techniques and the development of new sorghum products for human consumption.
CIMMYT has initiated a crop improvement program, known as the Dryland Crop Program (DCP), focused on sorghum, millets (pearl and finger millet), chickpea, pigeon pea and groundnut. The program is in the process of establishing a CGIAR-NARES network with stakeholders form 17 countries in Africa to collaboratively create, develop and implement a crop improvement network for these crops in Eastern, Southern, Western and Central Africa. This cooperative approach will enable CIMMYT and the network to identify suitable products for specific market segments, establish joint breeding pipelines, conduct on-farm germplasm testing and ultimately release and scale up superior seed varieties. This will ultimately lead to improving the quality and yield of these dryland crops, ensuring food security and promoting sustainable agricultural practices.
Nebie Baloue from CIMMYT Senegal providing information about the Dryland Crops Program (DCP) program to visitors at the CIMMYT’s booth (Photo: Marion Aluoch/CIMMYT)
Abhishek Rathore presented âUnderstanding sorghum race level diversity and development of sorghum genomic resources by using deep learning-based variant calling approach,â which examines sorghum’s racial diversity and the creation of genomic resources. Using a deep learning-based variant, researchers identified race-specific genetic signatures and gained a comprehensive understanding of sorghum race structure and domestication processes. These discoveries pave the way for more targeted breeding programs and the identification of single nucleotide polymorphism (SNPs) markers.
Baloua Nebie presented a poster on âCrop improvement network approach to co-develop market required products and strengthen partnersâ capacities in Africa.â He indicated the dryland crops improvement programs are in collaboration with CGIAR-NARES programs, with CIMMYT acting as a facilitator within the network to deliver varieties more quickly and efficiently in response to market demand. The network is comprised of 10 NARES in Western and Central Africa, seven NARES in Eastern and Southern Africa, as well as farmer organizations and seed companies. In addition to their national roles, NARES partners will contribute to regional activities based on their comparative advantages; these roles include co-sharing of regional pipelines development, early to late testing of breeding lines, product release and scaling. Through consultative meetings and program evaluation, these activities will be aligned with the regional and country-specific market segments identified by stakeholders.
Alex Zongo of the Institut de l’Environnement et des Recherches Agricoles (INERA) / CNRST – Burkina Faso, a NARES partner, presented research analyzing the macro-institutional determinants of the adoption of new sorghum/millet varieties. He shed light on the obstacles associated with the adoption of new sorghum/millet varieties. The research uncovered the economic and social incentives that prevent their scaling through a combination of qualitative and quantitative analysis.
Mr. Jeffrey Ehlers Program Officer at the Bill & Melinda Gates Foundation engages in conversation with Nebie Baloua from CIMMYT Senegal at the CIMMYT’s booth (Photo: Marion Aluoch/CIMMYT)
With climate change posing a significant threat to global agriculture, NARES partners involved in regional networks have delved into the pressing issues of enhancing sorghum production’s climate resilience. Rekiya Abdoulmalik, from the Institute of Agriculture Research (IAR) in Nigeria, presented a poster on the threats to sorghum cultivation in Nigeria posed by current security issues and potential climate change effects. The study evaluated 14 varieties of dwarf sorghum in multiple locations. The analysis identified stable, high-yielding varieties with the potential to contribute to Nigeria’s food security in the face of shifting environmental conditions.
Other NARES partners presenting posters included Henry Nzioka from Kenya Agricultural and Livestock Research (KALRO), who made a case for the biological control of the striga weed in sorghum. Citing technological advancements, he illustrated how the integration of climate-smart weed management technologies can lead to the control of the weed.
Another presentation by Charles Bett of KALRO focused on mechanization in the sorghum value chain, which revealed that investments in machinery and traction power have a positive and significant effect on sorghum yield. The findings recommend a shift in policy to help farmers afford small-scale machinery and gradually replace ox power with affordable machinery.
Assitan Daou from the Institut dâEconomie Rurale (IER) in Mali emphasized the suitability of sorghum as a crop for growing populations in varying climates and the significance of an agroecological transition for adaptation to climate change. His poster presentation centered on sorghum cropping systems under rainfed conditions, which aligned with the conference’s goals of increasing crop productivity, adapting to climate variations and bolstering the resilience of small-scale farmers.
The conference, according to Chris Ojiewo, Strategic Partnerships and Seed Systems lead for the Dryland Crops Program at CIMMYT, played a crucial role in sharing the latest sorghum research findings and their outcomes. âThe conference provided an important platform for communicating advances in research and associated outputs and outcomes on sorghum as an important cereal grain contributing to food, nutrition and income securities and overall resilience in agrifood systems especially to smallholder farmers in areas prone to drought stress and more so in the face of changing and variable climates,” said Ojiewo.
Nebie Baloua from CIMMYT Senegal engaging with visitors at the CIMMYT’s stand (Photo: Marion Aluoch/CIMMYT)
CIMMYT also set up an exhibition booth that provided an overview of the various activities undertaken as a part of its dryland crop programs and CGIAR-NARES improvement network. Senior officials of donor organizations consulted CIMMYT staff regarding approaches to dryland crops improvements, key achievements and the possibility of new partnerships.
The next 21st Century Global Sorghum Conference will be hosted by Texas University in Lubbock in September 2026.
Integrated management of organic and inorganic nitrogen sources in high- to low-yield cereal production could bring yearly savings in nitrogen fertilizer of over 1 million tons in India, some 90,000 tons in Ethiopia, and more than 20,000 tons in Malawi, according to a new scientific paper, âSpatially differentiated nitrogen supply is key in a global food-fertilizer price crisis.â
âGlobal policies and governments should prioritize nitrogen supplies to low-yield, low-fertility cropping systems, such as smallholder maize and rice farms in Malawi, which are representative of the highly N-deficient cereal systems relied upon by over 100 million people in sub-Saharan Africa,â said Sieglinde Snapp, director of the Sustainable Agrifood Systems Program at the International Maize and Wheat Improvement Center (CIMMYT) and first author of the paper. âThose farmers should also ramp up organic nitrogen inputs, such as manure and legume crops.â
In the intensive, high-yield cropping systems of India, farmers generally over-apply N fertilizer on 90% of the rice and wheat crops and more than half of maize crops. Less than half the nitrogen is taken up and used by the crops and the rest is lost into the environment, contaminating water, land, and the atmosphere. âSimply saving the excess fertilizer from over-fertilized areas and shifting it to low-application areas could increase global crop yields by 30%, with huge reductions in greenhouse gas emissions,â said Tek Sapkota, co-author of the paper and climate change leader at CIMMYT.
This study is based on evidence of achievable shifts in nitrogen management over 1-2 years, for a modest proportion of cropped area (10%). âWe did not assess interventions with longer time horizons or large investment requirements such as precision agriculture, mechanization, or deep placement of fertilizer,â Snapp explained.
Snapp and her colleagues used evidence from the scientific literature to estimate N-fertilizer savings from the above interventions for maize, wheat, and rice cropping systems in India, Ethiopia, and Malawi. Integrated organic and inorganic nitrogen management was estimated by considering manure and legume N inputs along with N fertilizers. The effect of reallocating public subsidies to more cost-effective, high-N fertilizer was calculated as the extra nitrogen that could be made available through a lower unit cost of nitrogen.
Food production vs healthy environment?
According to Snapp, humanity is caught in a bind. Food crops grown using synthetic nitrogen fertilizer have fed expanding world populations since the 1960s, fertilizer use has increased nearly 10-fold since then, and significantly higher food demands lie ahead to mid-century. At the same time, poor use of N fertilizer is hurting the environment and, most recently, geopolitical conflicts have disrupted N fertilizer supplies and exposed the vulnerabilities of the global fuel-fertilizer-food nexus.
âIn regions where cropping systems are highly deficient in nitrogen, investment is needed in policies and extension education to promote the use of organic nitrogen residues and legume crops,â Snapp said.
Extension agencies, she suggests, can extend their reach using digital tools and bi-directional communication approaches that engage local knowledge and farmers, including advisories regarding local soils and crop and fertilization requirements.
Reiterating the commitment to leading agriculture innovation across Africa, Bram Govaerts, director general of the International Maize and Wheat Improvement Center (CIMMYT), took part in the 8th Africa Agribusiness and Science Week (AASW8), June 5-8, 2023, in Durban, South Africa.
Partners discuss how to generate greater impact for farmers through regional partnerships between One CGIAR and African stakeholders (Photo: Liesbet Vannyvel/CIMMYT)
The theme of the AASW8 was linking science, innovation, and agribusiness for resilient food systems.
CGIAR System Board Chair Lindiwe Sibanda called for increased research and innovation to achieve an impact at scale and benefit African farmers at the opening ceremony.
Govaerts moderated a partner panel discussion regarding opportunities to strengthen the collaboration between One CGIAR and African research stakeholders.
Organizations represented on the panel included leaders from Technologies for African Agricultural Transformation, Total Landcare, Lupiya, Chitetezo Farmer Federation, and Green Sahel.
âAfrican countries must systematically review what is needed for the transformation of agrifood systems taking into consideration the present and future needs, and significantly increase investment in agricultural research and development,â said Govaerts.
Local and regional agribusiness is an essential industry playing a significant role in Africaâs prospects for economic growth and ensuring food security of its citizens. Still, challenges include regional harmonization of crop variety releases, surveillance of transboundary pests, and the growing threats of climate change.
âCIMMYT is dedicated to collaborating with local stakeholders to facilitate policies at the national, regional, and continental levels to promote proactive and eco-friendly management of transboundary plant health threats,â said Govaerts.
Several factors, including temperature, water deficit, and water access, have been identified as major causes in recent wheat yield variability worldwide. DSSAT wheat models showcase the impact of temperature, heat stress, water balance and drought stress in large wheat yield reductions due to climate change for Africa and South Asia, where food security is already a problem.
Climate change will lower global wheat production with the most negative impacts occurring in Africa and South Asia, reveals a new study released by the International Maize and Wheat Improvement Center (CIMMYT).
Honoring a legacy of innovative development in Zambia and looking forward to meeting the nationâs goals for food security, Bram Govaerts, director general of the International Maize and Wheat Improvement Center (CIMMYT), along with CGIAR Board Chair Lindiwe Sibanda, visited facilities and met with southern Africa collaborators of the Southern Africa AID-I Rapid Delivery Hub on June 2 and 3, 2023.
Bram Govaerts visited field experiments with the head of science at Zamseed (Photo: Katebe Mapipo/CIMMYT)
âCIMMYTâs work in Zambia and the region is geared to help national governments build resilience to climate change, diversify maize-based farming systems and improve productivity and production to address reduce hunger and poverty,â said Govaerts.
Southern Africa AID-I Rapid Delivery Hub aims to provide critical support to over 3 million farming households in Malawi, Tanzania and Zambia via targeted interventions for demand driven seed scaling, improved soil health and fertilizer use efficiency, and rapid delivery of critical agricultural advisory services deep into rural communities.
CIMMYT research and innovation supports Zambiaâs medium-term goal of âSocio-Economic Transformation for Improved Livelihoodsâ and its 2030 Vision of becoming âA Prosperous Middle-Income Nation by 2030.â
Govaerts and Sibanda toured Afriseedâs factory in Lusaka and its wheat field trials in Ngwerere. They also attended a field demonstration of Purdue Improved Crop Storage bags in the nearby district of Chongwe organized by the Catholic Relief Services, a local partner promoting low-cost post-harvest technologies for small-scale farmers in Zambia.
The delegation visited private partner Zamseed, a company commercializing and releasing CIMMYT-bred, Fall Armyworm tolerant maize seeds.
Southern Africa AID-I Rapid Delivery Hub has enabled the release of nearly 10,000 metric tons of certified maize and legume seed, which have been harvested by Zambian seed companies and community-based seed organizations, directly benefiting a million semi-subsistence farmers.
Govaerts also hailed Zambiaâs commitment to creating a transparent seed system. âThanks to this conducive policy environment, Zambia is a major hub in sub-Saharan Africa for hybrid maize seed production and export in Africa.â
Kevin Kabunda opened a partner meeting in which Bram Govaerts met AID-I farmers and partners from seed companies, educational institutions, CGIAR centers, and micro-finance and tech companies. (Photo: Katebe Mapipo/CIMMYT)
Besides Southern Africa AID-I Rapid Delivery Hub, CIMMYT and the Zambia Agricultural Research Institute have been collaborating for over two decades along with public and private partners in Zambia through different investments designed to create sustainable interventions that strengthen food systems and directly reach small-scale farmers.
Leading crop simulation models used by a global team of agricultural scientists to simulate wheat production up to 2050 showed large wheat yield reductions due to climate change for Africa and South Asia, where food security is already a problem.
The model predicted average declines in wheat yields of 15% in African countries and 16% in South Asian countries by mid-century, as described in the 2021 paper âClimate impact and adaptation to heat and drought stress of regional and global wheat production,â published in the science journal Environmental Research Letters. Climate change will lower global wheat production by 1.9% by mid-century, with the most negative impacts occurring in Africa and South Asia, according to the research.
âStudies have already shown that wheat yields fell by 5.5% during 1980-2010, due to rising global temperatures,â said Diego N.L. Pequeno, wheat crop modeler at the International Maize and Wheat Improvement Center (CIMMYT) and lead author of the paper. âWe chose several models to simulate climate change impacts and also simulated wheat varieties that featured increased heat tolerance, early vigor against late season drought, and late flowering to ensure normal biomass accumulation. Finally, we simulated use of additional nitrogen fertilizer to maximize the expression of these adaptive traits.â
Wheat fields in Ankara, Turkey, where data was used for crop model simulation (Photo: Marta Lopes/CIMMYT)
The wheat simulation models employed â CROPSIM-CERES, CROPSIM, and Nwheat within the Decision Support System for Agrotechnology Transfer, DSSAT v.4.6 â have been widely used to study diverse cropping systems around the world, according to Pequeno.
âThe DSSAT models simulated the elevated CO2 stimulus on wheat growth, when N is not limiting,â he said. âOur study is the first to include combined genetic traits for early vigor, heat tolerance, and late flowering in the wheat simulation.â
Several factors, including temperature, water deficit, and water access, have been identified as major causes in recent wheat yield variability worldwide. The DSSAT wheat models simulate the impact of temperature, including heat stress, water balance, drought stress, or nitrogen leaching from heavy rainfall.
âGenerally, small and low-volume wheat producers suffered large negative impacts due to future climate changes, indicating that less developed countries may be the most affected,â Pequeno added.
Climate change at high latitudes (France, Germany, and northern China, all large wheat-producing countries/region) positively impacted wheat grain yield, as warming temperatures benefit wheat growth through an extended early spring growing season. But warmer temperatures and insufficient rainfall by mid-century, as projected at the same latitude in Russia and the northwestern United States, will reduce rainfed wheat yields â a finding that contradicts outcomes of some previous studies.
At lower latitudes that are close to the tropics, already warm, and experiencing insufficient rainfall for food crops and therefore depending on irrigation (North India, Pakistan, Bangladesh), rising heat will damage wheat crops and seriously reduce yields. China, the largest wheat producer in the world, is projected to have mixed impacts from climate change but, at a nation-wide scale, the study showed a 1.2% increase in wheat yields.
âOur results showed that the adaptive traits could help alleviate climate change impacts on wheat, but responses would vary widely, depending on the growing environment and management practices used,â according to Pequeno. This implies that wheat breeding for traits associated with climate resilience is a promising climate change adaptation option, but its effect will vary among regions. Its positive impact could be limited by agronomical aspects, particularly under rainfed and low soil N conditions, where water and nitrogen stress limit the benefits from improved cultivars.
Extreme weather events could also become more frequent. Those were possibly underestimated in this study, as projections of heat damage effects considered only changes in daily absolute temperatures but not possible changes in the frequency of occurrence. Another limitation is that most crop models lack functions for simulating excess water (e.g., flooding), an important cause of global wheat yield variability.
This study was supported by the CGIAR Research Program on Wheat agri-food systems (CRP WHEAT; 2012-2021), the CGIAR Platform for Big Data in Agriculture, the International Wheat Yield Partnership (IWYP115 Project), the Bill & Melinda Gates Foundation, the World Bank, the Mexican government through the Sustainable Modernization of Traditional Agriculture (MasAgro) project, and the International Treaty of Plant Genetic Resources for Food and Agriculture and its Benefit-sharing Fund for co-funding the project, with financial support from the European Union.
In December 2022, more than 40 scientists from African National Agricultural Research Institutes (NARI) and Small and Medium Enterprise (SME) seed companies received training on the design and implementation of modern maize breeding programs.
The training, explains Yoseph Beyene, project leader in the Accelerating Genetic Gains (AGG) â Maize project, was designed to improve maize breedersâ knowledge of the most advanced technologies and methodologies in order to increase genetic gains in their respective breeding programs. It was supported by AGG-Maize and the CGIAR Accelerated Breeding Initiative (ABI) and formed part of ongoing efforts to modernize NARI breeding programs under AGG-Maize.
Yoseph Beyene, Accelerating Genetic Gains-Maize Project leader, makes introductory remarks at the start of the Senior Breeders Training in Nairobi, Kenya. (Photo: Susan Otieno/CIMMYT)
Over the course of five days in Nairobi, Kenya, participants from 13 countries where AGG-Maize is implemented worked to develop their skills in the use of new technologies and approaches to improving genetic gains and breeding efficiencies. Topics covered included the prioritization of market segmentation and product profile development, application of quantitative genetics principles in maize breeding, seed production research, improved designs for regional on-farm trials, and much more.
âThe training was an eye opener supported by detailed explanations on applications of diverse research methodologies in maize breeding,â said Isiah Aleri, a research assistant for the International Maize and Wheat Improvement Centerâs (CIMMYT) Maize Program in Kenya. âI met teams who had different views on some breeding techniques, but later received guided explanations from trainers on why certain standards and requirements are set for effective decision making.â
Veronica Ogugo, a research associate in the same CIMMYT program, agreed saying: âIt was very educative and in-depth in all the areas that were covered by the different specialists. The best part was that each of the components complimented one another.â She added that the training also offered a good opportunity for interaction with other experts.
B.M. Prasanna, CIMMYT Global Maize Program director, speaks at the Senior Breeders Training in Nairobi, Kenya. (Photo: Susan Otieno/CIMMYT)
What and whom to breed for
In his opening remarks at the training, B.M. Prasanna, Global Maize Program director at CIMMYT, noted the need for efficient use of limited resources, and encouraged scientists to work smartly, for instance, by leveraging available germplasm across phenotyping networks from other regions to diversify germplasm base for increased genetic gains. He emphasized the importance of clearly determining market segments and developing product profiles that have clear objectives, as well as the key traits to be considered, such as tolerance to drought, heat, and pests and diseases like fall armyworm.
Prasanna highlighted zinc as an example of an important feature to focus on, pointing out the micronutrientâs vital role in mental well-being and its immune boosting properties, especially in children. âDifferent geographies have different ways of using maize,â he explained. âIn general, maize provides 15-56% of total calorie intake in the rain-fed tropics, hence its importance for improving not only smallholder farmer incomes but also food and nutrition security.â
He also outlined how important partnerships with national programs and seed companies are for achieving the fullest impact of CIMMYTâs work. âThe strong regional collaborative maize breeding and seed systems is fundamental for impact,â he said. âIt is also the reason for arguably the largest public sector maize germplasm testing network in the Global South, in rain-fed stress-prone tropical environments.â
AID-I staff inspect germination in Malawi (Photo: CIMMYT)
Accelerated delivery with a difference is underway in Malawi, Tanzania, and Zambia to ensure access to stress-tolerant seeds for underserved farmers in remote areas. Supported by USAID, the Accelerated Innovation Delivery Initiative (AID-I) project brings public-private and civil society together to address the impacts of climate change, pests and diseases, and food shocks on maize and legume systems.
One simple and cost-effective solution to tackle these threats is last mile delivery of stress-tolerant and nutritious seeds. Ensuring that farmers have access to a diverse range of seeds means they can choose the best varieties to suit their needs and their local environment.
Through AID-I, scientists at the International Maize and Wheat Improvement Center (CIMMYT) are working with over 20 global, regional, national, and local partners to strengthen maize and legume seed systems in Malawi, Tanzania, and Zambia.
So far, in 2023, the team has set up over a hundred mega-demonstrations across Malawi and Zambia, to raise awareness and increase seed production by exposing communities to improved, climate-adapted and nutritious crop varieties. As learning centers, the mega-demonstrations give farmers a chance to see for themselves the advantages of improved maize and legume varieties and better farming practices including conservation agriculture and doubled up legumes systems.
Farmers plant mega-demonstration plots in Malawi (Photo: CIMMYT)
Spotlighted were drought-tolerant and nutritious varieties, expected to play a crucial role in the recovery of regional maize production. The Zambian and Malawian governments have also just released maize hybrids tolerant to fall armyworms, which will be scaled through the AID-I. The fall armyworm is an invasive pest that attacks more than 80 different crops but has a particular preference for maize. Without proper control measures, the pest can decimate crops, threatening food security, incomes, and livelihoods.
Alongside maize, the AID-I team is making seed of improved legume varieties, including beans, soybean, pigeon peas, cowpea, and groundnuts available at the last mile. Legumes are nutritious and good for the soil, providing valuable nutrients like nitrogen (N) so farmers can use less fertilizer, save money, and protect soil health.
AID-I supports strengthening of strategically located seed stockists of improved legume varieties and linking seed growers and buyers. These stockists, called agricultural development agents will also receive training in community seed production. Through connection with hundreds of agricultural development agents in the first farming season with seed suppliers, hundreds of thousands of farmers will be able to access a wide variety of improved seed.
Members of the CIMMYT leadership team with representatives from the U.S. Department of State and the U.S. Agency of International Development (USAID) visit AfriSeed in Zambia (Photo: CIMMYT)
Building strong relationships between public and private sector organizations is an integral part of the project. On January 16, 2023, long-term CIMMYT collaborator and AID-I key partner, AfriSeed hosted senior government officials from the United States Department of State (DOS) and U.S. Agency for International Development (USAID). The visitors gained valuable insight into how private seed companies involved in the marketing and distribution of maize and legume seeds operate in Zambia and showed their crucial role in the countryâs seed sector.
In August 2022, the arrival of a container ship at the port in Cotonou, Benin signaled a major milestone in a developing South-South business relationship that holds the potential to produce a massive change in agricultural practices and output in Benin and across West Africa.
The delivery of six-row seeder planters from India marks the initial fruit of a collaboration between Indian manufacturer Rohitkrishi Industries and Beninese machinery fabricator and distributor Techno Agro Industrie (TAI) that has been two years in the making.
Connecting partners in the Global South
A major area of focus for the Green Innovation Centers for the Agriculture and Food Sector (GIC) projects launched in 15 countries by Germanyâs Federal Ministry for Economic Cooperation and Developmentâs special initiative One World No Hunger is fostering cooperation between nations in the Global South.
Krishna Chandra Yadav laser levels land for rice planting in Sirkohiya, Bardiya, Nepal (Photo: Peter Lowe/CIMMYT)
This story began through the partnership between the Green Innovation Centers for the Agriculture and Food Sector and The International Maize and Wheat Improvement Center (CIMMYT) to increase agricultural mechanization in 14 countries in Africa and 2 in Asia.
GIC in India has been working with Rohitkrishi to develop appropriate mechanization solutions for smallholding farmers in India since 2017.
Under this new cross-border goal, GIC India discussed with Rohitkrishi the opportunity to adapt machines to the agroecological and socio-economic systems of African countries where continued use of traditional farming methods was drastically limiting efficiency, productivity, and yield. Rohitkrishi assessed the need and pursued this opportunity for long-term business expansion.
Small machines for smallholders
Before connecting with farmers and manufacturers in Benin, Rohitkrishi was busy solving problems for smallholding farmers in India, where large manufacturers focus on agricultural machinery designed and produced to meet the needs of the bigger, commercial farms. Sameer Valdiya of GIC India and Sachin Kawade of Rohitkrishi put their heads together to develop a plan for producing machines that could make a differenceâand then convince smallholding farmers to try them.
A farmer pulls a row seeder, Maharashtra, India. (Photo: Green Innovation Center-India)
By adapting an existing machine and incorporating continuous feedback from farmers, they created a semi-automatic planter. This unique, co-creative process was accompanied by an equally important change in farmer mindset and behaviorâfrom skepticism to the demonstrated impact and cost-benefit of the planter that was clear to each farmer.
These farmers were the first to adopt the technology and promoted it to their peers. Their feedback also drove continued improvementsâa fertilizer applicator, new shaft and drive, safety features, night-lights and (perhaps most importantly) a multi-crop feature to make it useful for planting potatoes, ginger, and turmeric.
Today, Rohitkrishi has distributed 52 semi-automatic planters across India, and these machines are being used by up to 100 farmers each. Users are seeing a 17-20 percent increase in productivity, with an accompanying increase in income, and 30 percent of users are women.
The seeders are a roaring success, but Rohitkrishi is focused on continued improvement and expansion. As they continue to respond to adjustments needed by farmers, the company plans to sell 1000 semi-automatic planters per year by 2025. Reaching that goal will require both domestic and foreign sales.
Market opportunity meets technological need
Thanks to the active partnership of CIMMYT and Programme Centres dâInnovations Vertes pour le secteur agro-alimentaire (ProCIVA), TAI in Benin emerged as a promising early adopter of Rohitkrishiâs planters outside India. Seeing a remarkable opportunity to establish a foothold that could open the entire West African market to their products, Rohitkrishi began the painstaking process of redesigning their machine for a new context.
This ambitious project faced numerous challengesâfrom language barriers, to the definition of roles amongst major players, to major COVID-19 and supply chain delays. The arrival of the seeders, however, is a major accomplishment. Now Rohitkrishi and TAI will begin working with government representatives and farmer-based organizations to ensure the equipment performs well on the ground and meets Beninâs agroecological requirements.
Once final testing is completed in the coming months, Rohitkrishiâs seeders will have the chance to demonstrate what a difference they can make for soy and rice production in Benin.
âWhen developing countries with similar contexts and challenges forge alliances and business connections to share their knowledge, expertise, and problem-solving skills with each other, this kind of direct South-South collaboration produces the most sustainable advances in agricultural production, food security, and job creation,â said Rabe Yahaya, agricultural mechanization specialist at CIMMYT.
Scale mechanization through a starter pack that comprises a two-wheel tractor – a double row planter as well as a trailer and sheller (Photo: CIMMYT)
Meanwhile, CIMMYT is studying this pilot project to identify opportunities for reproducing and expanding its success. Through the Scaling Scanâa web-based, user-friendly tool to assess ten core ingredients necessary to scale-up any innovationâCIMMYT is helping Rohitkrishi and TAI set ambitious and reachable goals for scalability.
Most importantly, the Scaling Scan results will identify areas for course correction and help Rohitkrishi and its partners continue to be sensitive to farmer feedback and produce equipment better suited to needs on the ground.
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Climate change aggravates risk to make food even more unaffordable and crops more susceptible to crop pests and diseases.
CIMMYT maize research guides startups and nonprofits across Africa to act and put pressure on public and private actors to avert food insecurity and regional instability.
