Members of Umoja, Tuaminiane, Upendo and Ukombozi groundnut farming groups in Naliendele, Tanzania showing their groundnut harvests in May 2022. (Photo: Susan Otieno/CIMMYT)
The Accelerated Varietal Improvement and Seed Delivery of Legumes and Cereals in Africa (AVISA) project has developed draft national groundnut target product profiles in Malawi, Mozambique, Sudan, Tanzania, Uganda and Zambia.
Groundnut is grown in eastern and southern Africa, where it remains an important food and oil crop from small holder farmers.
The new findings from the project are a result of work from groundnut crop breeding and improvement teams from the National Agricultural Research and Extension Systems (NARES) representatives from the six largest groundnut producing countries in the eastern and southern Africa region.
Their important research was carried out with the support of representatives from the Centre for Coordination of Agricultural Research and Development for Southern Africa (CCARDESA) and CGIAR.
Developing target product profiles for groundnut
For the first time, through the International Maize and Wheat Improvement Center (CIMMYT)-led AVISA program, funded by the Bill & Melinda Gates Foundation, groundnut breeding teams discussed and documented country level priorities at a meeting in Dar es Salaam, Tanzania.
The groundnut breeding teams also shared information on current groundnut production metrics and trends in the six national programs. This also helped to establish a common understanding of countriesâ level research priorities.
Futhi Magagula from CCARDESA and Elailani Abdalla, Mohamed Ahmed and Abdelrazeg Badadi from ARC-Sudan deliberate on groundnut market segments for Sudan. (Photo: Biswanath Das/CIMMYT)
Agnes Gitonga, market strategist at CGIAR Genetic Innovations Action Area, who led the team in understanding and applying the template, explained that the quality of a target product profile (TPP) is dependent on how well market segments are defined. âTo ensure target product profiles are an accurate reflection of customer needs, who include farmers, consumers, and processors,â she said.
âNational groundnut teams nominated Country Product Design Teams that will meet nationally before the end of 2022 to review and update country TPPs. These multi-stakeholder teams will ensure that the needs of diverse groups are captured and that breeding efforts are accurately focused.â.
Harish Gandhi, Breeding Lead, Dryland Legumes and Cereals (DLC) at CIMMYT, further explained that a bottom-up approach for defining country and regional priorities was used, where each country defined market segments and target product profile based on the use of the produce and growing conditions of farmers. This strategy involved each country defining its market segments and TPP, which was based on the use of the produce and growing conditions of farmers.
Building on the draft national target product profiles that were defined at the meeting, participants went on to prioritize traits such as diseases, nutrition and stress tolerance. These factors can be critical at regional level and important in identifying potential locations for conducting phenotyping. The phenotyping locations are distributed based on capacity of stations in different countries to screen for traits, such as late leaf spot disease screening in Msekera in Zambia, which is a known hotspot for the disease.
âWe had a good opportunity to consider grower needs as well as consumer needs in each country for purposes of defining the relevant groundnuts market segments. I believe this will have a positive impact on future work in groundnuts in the East and Southern Africa region,â reflected Gitonga.
The collaboration of the teams involved was a key factor for the projectâs success so far and will be crucial in working towards its goals in the future.
âInvolving different stakeholders in designing target product profile was an effective way of enabling transformation of individual preferences (area of interest) to collective preferences (targeted product) with consumer needs and markets in mind,â said Happy Daudi, Groundnut Breeding lead at the Tanzania Agricultural Research Institute (TARI).
Tanzania Agricultural Research Institute (TARI) Naliendele Station Groundnut Research Team ((L-R) Bakari Kidunda, Gerald Lukurugu, Anthony Bujiku and Dr. Happy Daudi) deliberate on national groundnut breeding priorities. (Photo: Biswanath Das/CIMMYT)
Strengthening groundnut breeding programs in east and southern Africa
The projectâs first meeting will provide an important foundation for future research, which will use the new findings as a blueprint.
Biswanath Das, Plant Breeder, Groundnut for East and Southern Africa region and NARES Coordinator and Programming lead for EiB said, âDefining national TPPs, identifying regionally important traits and mapping a testing network are fundamental building blocks of a modern breeding program.â
At the meeting, a schedule was laid out for peer-to-peer assessments of breeding programs within the regional network to take stock of current efforts and gaps. This step helps to develop customized capacity development plans for each network partner.
âThrough targeted and demand led capacity development, the East and Southern Africa groundnut crop improvement network aspires to strengthen the role of each network member in collaborative, regional breeding efforts,â Das said.
The meeting laid the ground for coordinated regional groundnut breeding and took steps towards formalizing a regional NARES-CGIAR-SME groundnut crop improvement network. By building on excellent connections that already exist among national groundnut breeding teams. Das underscored that the move will strengthen alignment of NARES, CGIAR and regional research efforts around a common vision of success.
In addition, David Okello who leads groundnut research at National Agriculture Research Organization (NARO) Uganda, noted that the meeting provided a good opportunity for consolidating the existing network. He also looked forward to welcoming more groundnut improvement programs in the region on board.
The Southern Africa Accelerated Innovation Delivery Initiative (AID-I) Rapid Delivery Hub is one of the ways in which Feed the Future, the U.S. governmentâs global food security and hunger initiative led by USAID, is taking immediate action to help cushion the blow of high fuel and fertilizer prices on farmers. Itâs a two-year rapid response effort that connects farmers to innovative tools and information they need to manage the high costs and input supply disruptions over the next several cropping seasons.
AID-I provides targeted assistance to up to three million African smallholder farmers by improving soil health and fertilizer management; strengthening local seed systems; connecting farmers to financial products and services; and delivering extension and advisory services. AID-I Delivery Hubs focus on areas where the need and potential is greatest: Malawi, Tanzania, and Zambia.
The Southern Africa Accelerated Innovation Delivery Initiative (AID-I) Rapid Delivery Hub is establishing agile, networked rural innovation hubs to enhance the adaptation of technology, co-ownership, and sustainable inputs and outputs for value chains development. The project is fostering diversification through the scaling of productive and resilient agronomic practices and seed systems for cereals, legumes, vegetables and feed/fodder products, and strengthens rural-urban linkages to enable national capacity for cross-network management.
It is being implemented in close consultation with One CGIAR programs and integrates both CGIAR and non-CGIAR innovation partners to support scaling by last-mile delivery partners.
This work contributes to six of the United Nations Sustainable Development Goals (SDGs):
Zero Hunger
Good Health and Well-Being for People
Gender Equality
Decent Work and Economic Growth
Responsible Consumption and Production
Climate Action.
What are the project’s primary objectives?
Improve soil health and fertilizer management to grow more, more profitably and with less waste.
Strengthen local seed systems so agribusinesses can reach smallholder farmer customers with a diversity of crop seeds, including climate-resilient and more nutritious varieties.
Connect to financial products and services designed to overcome the unique needs smallholder farmers and small and medium agribusinesses face; and,
Deliver extension and advisory services on good agricultural practices, soil and water management practices, and post-harvest storage solutions so smallholder farmers and small and medium agribusiness owners are more productive and keep more of what they grow.
VideoÂ
Deputy Assistant Administrator, USAID Resilience Environment and Food Security Bureau, Ann Vaughan, visits an AID-I demonstration plot of drought-tolerant maize varieties in Zambia.
Effective plant health management is critical for improving the productivity, profitability, sustainability and resilience of agrifood systems. Yet, farming communities, especially in low- and middle-income countries, struggle to contain existing and emerging plant pests and diseases. Each year, these threats cause on average 10â40% losses to major food crops, costing the global economy around US$220 billion. The highest losses are associated with food-deficit regions with fast-growing populations.Â
Increasing international trade and travel, coupled with weak phytosanitary systems, are accelerating the global spread of pests and diseases. The situation is exacerbated by climate change, with agricultural intensification and diversification driving the emergence of new threats. These burdens fall disproportionately on poorly resourced communities, especially women and youth in rural areas.Â
Diagnostic capacity, global-scale surveillance data, risk prediction/forecasting and rapid response and management systems for major pests and diseases are still lacking. Inadequate information and knowledge of and access to climate-smart control options leave smallholders and marginalized communities ill-equipped to respond to biotic threats. Environmental and health effects of toxic pesticides, exposure to mycotoxins and acute unintentional pesticide poisoning are major concerns.
Objective
This Initiative aims to protect agriculture-based economies of low- and middle-income countries in Africa, Asia and Latin America from devastating crop pest incursions and disease outbreaks by developing, validating and deploying inclusive innovations, and by leveraging and building viable networks across an array of national, regional and global institutions.
Activities
This objective will be achieved by:
Bridging knowledge gaps and networks for plant health threat identification and characterization, focusing on strengthening the diagnostic and surveillance capacity of national plant protection organizations and national agricultural research and extension systems, and facilitating knowledge exchange on pests and diseases.Â
Building capability of relevant national stakeholders for risk assessment, and data management and guiding preparedness for rapid response, focusing on controlling the introduction and spread of pests and diseases by developing and enhancing tools, standards and policies.Â
Improving integrated pest and disease management, focusing on designing and deploying approaches against prioritized plant health threats in targeted crops and cropping systems.Â
Designing and deploying tools and processes for protecting food chains from contamination, specifically, through innovations for reducing mycotoxin contamination to protect health, increase food/feed safety, enhance trade, diversify end-use and boost income.Â
Promoting gender-equitable and socially inclusive scaling of plant health innovations to achieve impacts through multistakeholder partnerships, inter-disciplinary research, effective communications and capacity development.
Participants of the AGG Maize Mid-Term Review and Planning Meeting at CIMMYT’s Maize Lethal Necrosis Screening Facility in Naivasha, Kenya. (Photo: Dokta Jonte Photography)
The Accelerating Genetic Gains in Maize and Wheat (AGG) Project, which is halfway through its implementation, continues to register impressive achievements. At a meeting focusing on the projectâs Maize component, held in Nairobi during July 25-28, B.M. Prasanna, Director of the Global Maize Program at the International Maize and Wheat Improvement Center (CIMMYT), highlighted the projectâs major achievements in the opening session.
âOne of the most important achievements of this project is increasing use of powerful tools and technologies to increase genetic gains in maize breeding pipelines in Africa,” said Prasanna. He noted that the AGG partners are showing keen interest in doubled haploid-based maize breeding. Prasanna pointed out that currently work is ongoing to produce third-generation tropicalized haploid inducers which, in combination with molecular markers, will support accelerated development of improved maize germplasm, a key objective of the AGG Project.
Prasanna also pointed out a significant increase in adoption of stress-tolerant maize in Africa â from less than half a million hectares cultivated under stress tolerant maize varieties in 2010, to 7.2 million hectares currently in 13 African countries, benefitting 44.5 million people. He explained that drought-tolerant maize is not only a productivity enhancing tool but also an innovation for improving the welfare of farmers. âIt reduces the probability of crop failure by 30 percent and provides an extra income to farmers at a rate of approximately $240 USD per hectare, equivalent to about nine months of food for a family at no additional cost,” he said, adding that the essence of research is taking improved genetics to farmers and impacting their lives.
He noted there is remarkable progress in maize varietal turnover in sub-Saharan Africa, pointing out particularly efforts in Ethiopia, Uganda, Zambia and Zimbabwe, where old maize varieties, some dating as far back as 1988, have been replaced with newer climate-resilient varieties. Prasanna highlighted the need to engage with policy makers to put in place appropriate legislation that can accelerate replacement of old or obsolete varieties with improved genetics.
Prasanna stressed on the importance of rapid response to transboundary diseases and insect-pests. CIMMYT has established fall armyworm (FAW) screening facility at Kiboko, Kenya, and that more than 10,000 maize germplasm entries have been screened over the last three years. He applauded South Sudan for being the first country in sub-Saharan Africa to recently release three CIMMYT-developed FAW-tolerant hybrids. He said CIMMYTâs FAW-tolerant inbred lines have been shared with 92 institutions, both public and private, in 34 countries globally since 2018.
Kevin Pixley, CIMMYT Global Genetic Resources Director and Deputy Director General, Breeding and Genetics, encouraged the participants to continuously reflect on making innovative contributions through the AGG project, to serve smallholder farmers and other stakeholders, and to offer sustainable solutions to the food crisis that plagues the world.
B.M. Prasanna addresses partners at the KALRO Kiboko Research station in Kenya during an AGG field visit. (Photo: Dokta Jonte Photography)
Synergies across crops and teams
Pixley pointed out that though the meetingâs focus was on maize, the AGG Project has both maize and wheat components, and the potential for learning between the maize and wheat teams would benefit many, especially with the innovative strides in research from both teams.
Pixley referenced a recent meeting in Ethiopia with colleagues from the International Institute of Tropical Agriculture (IITA), the International Center for Tropical Agriculture (CIAT) and CIMMYT, where discussions explored collaboration among CGIAR centers and other stakeholders in strengthening work on cowpea, chickpea, beans, sorghum, millet and groundnut crops. He noted that maize, wheat and the aforementioned crops are all critical in achieving the mission of CGIAR.
âCIMMYT has been requested, since August of last year, by CGIAR to initiate research projects on sorghum, millet and groundnut because these crops are critical to the success of achieving the mission of CGIAR,” said Pixley. “So, we have recently initiated work on the Accelerated Varietal Improvement and Seed Systems in Africa (AVISA) project together with partners. This is the first step towards OneCGIAR. Itâs about synergies across crops and teams.”
Collaborative research commended
The meetingâs Chief Guest, Felister Makini, Deputy Director General â Crops of the Kenya Agricultural and Livestock Research Organisation (KALRO), commended the collaborative research undertaken by CIMMYT and other CGIAR partners. She noted that the partnerships continue to build on synergies that strengthen institutional financial, physical and human resources. She attested that collaboration between KALRO and CGIAR dates back to the 1980s, beginning with training in maize breeding, and then subsequent collaboration on developing climate-adaptive improved maize varieties and training of KALRO technicians in maize lethal necrosis (MLN) screening and management among other areas.
Maize and wheat are staple food sources in Kenya and sub-Saharan Africa and as the population increases, new methods and approaches must be found to accelerate development and deployment of improved maize and wheat varieties. She challenged the partners to intensify research and come out with high-yielding varieties that are resistant or tolerant to a wide range of biotic and abiotic stresses.
The Inaugural Session also featured remarks from the representatives of the AGG funders â Gary Atlin from the Bill & Melinda Gates Foundation, Jonna Davis from the Foundation for Food and Agriculture Research (FFAR), and John Derera from IITA, an AGG project partner.
A total of 116 participants, including representatives from National Agricultural Research Systems (NARS) in 13 AGG-Maize partner countries in Africa and seed companies, participated in the meeting. Participants also visited the KALRO-CIMMYT MLN Screening Facility at Naivasha, and KALRO-CIMMYT maize experiments at Kiboko, Kenya, including the work being done at the maize doubled haploid and FAW facilities.
Participants of the IMAGE National Advisory Committee launch event in Ethiopia. (Credit: EIAR)
Coordinating the development and deployment of improved seed varieties is a complex task involving many stakeholders, including government agencies, public and private seed sector organizations, and ultimately, farmers and farmer groups. Cooperation among these groups is vital to assess and measure the impact of improved varieties and to guide decision making for future crop breeding efforts.
The Institutionalizing Monitoring of Crop Variety Adoption using Genotyping (IMAGE) project, funded by the Bill & Melinda Gates Foundation and managed by Context Global Development, is a five-year program operating in Nigeria, Tanzania, and Ethiopia designed to increase the efficacy of variety deployment by establishing, institutionalizing, and scaling up routine monitoring of improved variety adoption and turnover using genotyping technologies, focusing on wheat, maize, teff, and the common bean.
The International Center for Maize and Wheat Improvement (CIMMYT), in collaboration with the Ethiopian Institute of Agricultural Research (EIAR), launched Ethiopiaâs IMAGE National Advisory Committee (NAC) February 25, 2022, in Addis Ababa.
Feto Esemo, the Director General of the Ethiopian Institute of Agricultural Research (EIAR) officially opened the workshop.
Esemo underscored in his opening remarks the NACâs mission to promote the application of DNA fingerprinting for an accurate assessment and understanding of the adoption of improved maize and wheat varieties by small-holder farmers in Ethiopia and resolve data discrepancy among researchers.
The NAC is the highest advisory body for IMAGEâs implementation in Ethiopia and comprises seven institutions: Ministry of Agriculture (MoA), Ministry of Planning and Development (MPD), Agricultural Transformation Institute (ATI), EIAR, Central Statistical Agency (CSA), Ethiopian Biodiversity Institute (BI), and the Ethiopian Biotechnology Institute (EBI).
Kindie Tesfaye, CIMMYT senior scientist, emphasized the application of DNA fingerprint data on maize and wheat in Ethiopia and summarized the IMAGE Project.
âIMAGE supports inclusive agricultural transformation by providing insights and evidence for seed sector actors to enhance government agency capacity, improve stakeholder coordination, and lead to better resource allocation for varietal development and commercialization,â said Tesfaye.
He added the IMAGE Project provides the opportunity to leverage past monitoring pilots and cross-country lessons while advancing genetic reference libraries, establishing protocol adoption, and building towards institutionalization over five years.
National maize and wheat genotyping studies in Ethiopia proved the feasibility of using DNA fingerprinting for variety monitoring at scale and CIMMYT and EIAR presented the findings to seed system and policy stakeholders with an emphasis on demonstrating how varietal identity based on genotyping compares with farmersâ elicitation, the area-weighted average age of varieties, germplasm attribution, and varietal performance.
Chilot Yirga, Deputy Director-General, Capacity Building and Administration of EIAR, emphasized the functional and structural roles of the National Advisory Committee (NAC), Country Team (CT), and Technical Working Group (TWG) of the project in the country.
EIAR, the Holetta National Agricultural Biotechnology Research Center, CSA, and CIMMYT comprise the Country Team.
Yirga also briefed the participants on the details of the Committeeâs mandate and indicated the roles of all stakeholders and policymakers, specifically in DNA fingerprinting.
The workshop concluded by electing a chairperson and vice-chairperson of the committee among its members and co-project leaders from CIMMYT and EIAR.
Institutionalizing Monitoring of Crop Variety Adoption using Genotyping (IMAGE) is a five-year program with the aim of establishing, institutionalizing, and scaling routine monitoring of improved variety adoption and turnover using genotyping.
It is led by country teams in Ethiopia, Nigeria and Tanzania, supported by Context Global Development and the Bill & Melinda Gates Foundation.
Reliable monitoring: IMAGE will assess the varieties that farmers are growing of four staple crops within the three target countries and marking the rate of improved variety adoption through recurring surveys and comparative analysis.
Vision for change: IMAGE supports inclusive agricultural transformation by providing insights and evidence for seed sector actors to enhance government agency capacity, improve stakeholder coordination, and lead to better resource allocation for varietal development and commercialization.
Project objectives:
Enable a national leadership mandate to monitor crop varieties and adoption
Build a network of technical experts and service providers to provide personalized advisory support
Establish best practices that enable routine monitoring and produce credible results
Form a sustainable funding mechanism based on use cases with government and stakeholder buy-in
Advocate for institutional capacity for reliable monitoring programs
IMAGE provides the opportunity to leverage past monitoring pilots and for cross-country learnings while advancing genetic reference libraries, establishing protocol adoption, and building towards institutionalization over five years. This is done through six objectives:
Comparable estimates of varietal adoption and turnover will be generated and made available to stakeholdersâ
Standardization of best-practices âand supporting technologiesâ
Establishment of âsustainable business cases
Pilot study results on varietal identity preservation in seed value chains for each country-crop combination â
Institutionalized system of âvarietal monitoring for long-term, sustainable national partner implementation
Generated data used by seed sector stakeholders to make key decisionsâ
Participants at the mid-term review and planning meeting on the Guiding Acid Soil Management Investments in Africa (GAIA) project. Photo CIMMYT
The International Maize and Wheat Improvement Center (CIMMYT) and the Rwanda Agriculture and Animal Resources Development Board (RAB) recently held a mid-term review and planning meeting on the Guiding Acid Soil Management Investments in Africa (GAIA) project.
The meeting aimed to track the progress made in the first year of the projectâs implementation, identify challenges, document lessons learned, and develop an action plan for the following year, based on identified gaps and priorities.
In his welcoming remarks, RAB Director General Patrick Karangwa highlighted the close partnership between the two institutions.
âThe workshop is not only about reviewing the progress but also about creating a strong partnership and interaction with each other to form a lasting togetherness that can later be useful for supporting each other in running the programâs activities of GAIA in the region,â he said.
Karangwa also noted the dynamism and enthusiasm of the GAIA team and partners, who made âremarkable successesâ during a challenging period due to the COVID-19 pandemic.
Along with plant nutrition and improved land management, healthier soils contribute to more productive and profitable smallholder enterprises. The GAIA project uses scalable innovations to provide reliable, timely and actionable data and insights on soil health and crop performance, at farm and regional levels.
The workshop brought together about 49 participant including regional program implementing partners, key stakeholders, and scientists from Ethiopia, Kenya, Rwanda, Tanzania, and Zimbabwe to  participate in more than 20 face-to-face and virtual presentations,  breakout sessions, and team-building exercises.
âThe key to project success is a strong partnership and collaboration with national and regional partners, particularly with private and public sectors ââ said  Sieglinde Snapp, the director of the Sustainable Agrifood Systems (SAS) program at CIMMYT.
The participants addressed the work undertaken around eight work packages: spatial ex-ante analysis, adoption research on lime value chains, agronomy research for lime recommendations, support to the lime sector, policy support, coordination and advocacy, data use and management, and communication.
GAIA is funded by the Bill and Melinda Gates Foundation and implemented by CIMMYT in partnership with the Centre for Agriculture and Bioscience International; Dalberg; national agricultural research systems in Ethiopia, Kenya, Rwanda, and Tanzania; the Southern Agricultural Growth Corridor of Tanzania; Wageningen University; and the University of California – Davis. The project aims to provide data-driven and spatially explicit recommendations to increase returns on investment for farmers, the private sector, and governments in Africa.
Healthier soils, plant nutrition and improved land management contribute to more productive and profitable smallholder enterprises. The Guiding Acid Soil Management Investments in Africa (GAIA) project will address key knowledge gaps related to soil health and improved agronomy. It will use scalable innovations to provide reliable, timely and actionable data and insights on soil health and crop performance, at farm and regional levels.
Novel diagnostic approaches, data assets, decision aids and better farm management practices are increasingly being scaled and integrated with other data, products and services. These services can be integrated with solution-focused, bundled services that support farmers in their timely management and operational decisions. They can also be integrated with input delivery systems, including digitally enabled agricultural advisory systems.
Key expected results in the next five years include:
National soil information services fully integrated with functioning agronomy research pipelines within key international and national research organizations of at least seven focus countries in sub-Saharan Africa and SA.
Soil information services solutions are integrated with agricultural advisory services into overall decision agriculture platforms at the national level.
Innovative diagnostic tools and decision aids are increasingly used at farm and regional level.
All investments routinely apply FAIR (findable, accessible, interoperable, reusable) data principles and practices.
The vision of success of this project is the rehabilitation of acid soils at scale in East Africa â thanks to data-driven and spatially-explicit recommendations â leading to maximized (and inclusive) returns on investment for farmers, private companies and governments. While the analysis and outputs will be targeted to the specific needs of partner counties (Ethiopia, Kenya, Rwanda and Tanzania), the methodology, workflows and much of the analysis will be of relevance for other countries in the region. While the specific focus of the project is on acid soils, the frameworks will be adaptable and applicable to other soil health and geospatial agronomic challenges. The ultimate goal is sustainable intensification of African smallholder farming systems.
In line with its vision and goal, GAIA will deliver three primary outcomes:
Increase depth and utility of data and evidence related to acid soil management in the region.
Provide support to governments and the private sector to stimulate investment in acid soil management in the region.
Improve access and use of data related to acid soil management in the region.
Participants of the kick-off meeting for the Ukama Ustawi Initiative stand for a group photo in Nairobi, Kenya. (Photo: Mwihaki Mundia/ILRI)
Partners of CGIARâs new regional integrated Initiative in eastern and southern Africa held a kick-off meeting in Nairobi on March 2â3, 2022. Eighty-five people participated, including national agricultural research extension programs, government representatives, private sector actors, funders and national and regional agricultural research and development organizations.
Entitled Ukama Ustawi, the Initiative aims to support climate-smart agriculture and livelihoods in 12 countries in eastern and southern Africa: Kenya, Zambia, Ethiopia and Zimbabwe (in Phase 1); Malawi, Rwanda, Tanzania and Uganda (in Phase 2); and Eswatini, Madagascar, Mozambique and South Africa (in Phase 3).
The Initiative aims to help millions of smallholders intensify, diversify and de-risk maize-mixed farming through improved extension services, institutional capacity strengthening, targeted farm management bundles, policy support, enterprise development and private investment.
Ukama Ustawi is a bilingual word derived from the Shona and Swahili languages. In Shona, Ukama refers to partnerships, and in Swahili, Ustawi means well-being and development. Together, they resemble the vision for the Initiative to achieve system-level development through innovative partnerships.
The meeting brought together partners to get to know each other, understand roles and responsibilities, identify priorities for 2022, and review the cross-cutting programmatic underpinnings of Ukama Ustawi â including gender and social inclusion, capacity strengthening and learning.
Baitsi Podisi, representing the Centre for Coordination of Agricultural Research and Development for Southern Africa (CCARDESA), said he is excited to be part of the Initiative: “CCARDESA, in its cooperation and coordination mandate, can learn a lot from CGIAR in restructuring to respond to the changing times.â Podisi supported the partnership with CGIAR in the Initiativeâs embedded approach to policy dialogue, working with partners such as CCARDESA, the Association for Strengthening Agricultural Research in Eastern and Central Africa (ASARECA) and the Food, Agriculture and Natural Resources Policy Analysis Network (FANRPAN).
Similarly, FANRPANâs Francis Hale emphasized the need not to re-invent the wheel but to work with partners who already have a convening power, to advance the policy agenda for diversification and sustainable intensification.
What were key issues discussed?
One of the features of Ukama Ustawi is the use of four interconnected platforms: a scaling hub, a policy hub, an accelerator program and a learning platform. These will provide spaces for exchange and learning with partners across all CGIAR Initiatives in the region. Partners conducted a series of âfishbowlâ interactions across work packages to review the planned activities and provide a clearer understanding of deliverables, identify synergies, potential overlaps, common partners and countries, and set timelines.
The Initiative will work with innovative multimedia platforms to change knowledge, attitudes and practices of millions of farmers in eastern and southern Africa. One key partner in this area is the Shamba Shape Up TV show and the iShamba digital platform. Sophie Rottman, Producer of Shamba Shape Up, said she is looking forward to the work with Initiative partners, that will help expand the show to Uganda and Zambia.
Jean Claude Rubyogo, representing the Pan-Africa Bean Research Alliance (PABRA) said: âIt is time we move away from CGIAR-initiated to country-initiated development activities. This is what Ukama Ustawi is all aboutâ.
Martin Kropff, Global Director of Resilient Agrifood Systems at CGIAR, explained CGIARâs regional integrated initiatives are designed to respond to national/regional demands. âThe initiatives will start by working with partners to assess the food and nutritional challenges in the region, and tackle them by bringing in innovative solutions.â
The event was concluded by agreeing on the implementation of the inception phase of the Ukama Ustawi Initiative, and follow-on discussions to finalize key activities in 2022.
Sorghum field in Kiboko, Kenya. (Photo: E Manyasa/ICRISAT)
As part of the One CGIAR reform, the Global Science Group on Genetic Innovation will implement a crop breeding and seed systems project for key crops including groundnut, sorghum and millet, across western and eastern African countries.
The International Maize and Wheat Improvement Center (CIMMYT), a leader in innovative partnerships, breeding and agronomic science for sustainable agri-food systems, will lead the project.
The Accelerated Varietal Improvement and Seed Delivery of Legumes and Cereals in Africa (AVISA) project aims to improve the health and livelihoods of millions by increasing the productivity, profitability, resilience and marketability of nutritious grain, legumes and cereal crops. The project focuses on strengthening networks to modernize crop breeding by CGIAR and national program partners, and public-private partnerships to strengthen seed systems. The project currently works in Burkina Faso, Ethiopia, Ghana, Mali, Nigeria, Uganda and Tanzania.
âSorghum, groundnut and millets are essential staples of nutritious diets for millions of farmers and consumers and are crucial for climate-change-resilient farming systems,â explained CIMMYT Deputy Director General and Head of Genetic Resources, Kevin Pixley. âThe oversight of this project by CGIARâs Genetic Innovation Science Group will ensure continued support for the improvement of these crops in partnership with the national agricultural research and extension systems (NARES) that work with and for farmers,â he said.
âCIMMYT is delighted to lead this project on behalf of the Genetic Innovations Science Group and CGIAR,â confirms CIMMYT Director General, Bram Govaerts.
âWe look forward to contributing to co-design and co-implement with partners and stakeholders the next generation of programs that leverage and build the strengths of NARES, CGIAR and others along with the research to farmers and consumers continuum to improve nutrition, livelihoods, and resilience to climate change through these crops and their cropping systems.â
Dryland Crops, formerly known as the Accelerated Varietal Improvement and Seed Systems in Africa (AVISA) project, aims to improve the livelihoods of small-scale producers and consumers of sorghum, millet, groundnut, cowpea and bean. Project partners focus on improving the breeding and seed systems of these crops in their key geographies in Burkina Faso, Ethiopia, Ghana, Mali, Nigeria, Tanzania and Uganda. Other crops receiving growing attention in the project include finger millet, pigeon pea and chickpea.
Although significant adoption of improved seed of dryland cereals and legume crops in Africa has been reported, its overall use remains low. There is a growing interest in these crops, particularly because of their resilience to climate-change; however, the seed sector is constrained by lack of product information, dearth of knowledge of the size and scale of the business opportunity, and inadequate access to early generation seed.
Dryland Crops will address these constraints by contributing to the establishment of robust systems that:
Enable networks to work synergistically across countries with common challenges and opportunities.
Support national agricultural research systems to access research, professional development and infrastructure-building opportunities.
Increase the quantity and quality of data substantiating varietal superiority and the demand for seed and grain of improved varieties.
Boost the availability of early generation seed and strengthen links between the research system and private- and public-sector actors.
The aspiration is to codevelop, validate by co-implementation, and continuously improve with partners research-to-farm-to-consumer models that achieve positive impacts on farmersâ livelihoods and consumersâ wellbeing.
The Alliance of Bioversity and CIAT and IITA will lead initiatives for common bean and cowpea, respectively. For sorghum, pearl millet and groundnut breeding, CIMMYT will design programs that support crop improvement networks, including CGIAR and national agricultural research systems, and incorporate best approaches, principles, and tools, particularly those availed through the Excellence in Breeding (EiB) platform.
The project is committed to gender equity as a guiding principle, considering the critical role women play in choosing legume and cereal varieties and seed sources. Women seed entrepreneurs and women-led seed companies will garner special attention for capacity development. Partnerships with actors through the value chain, platforms and demonstrations will ensure women have equal access to improved technologies.
The previous phase of the AVISA project was led by the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).
Hambulo Ngoma is a Development Economist with research interests spanning the development-environment nexus. He leads or co-leads socio-economic components of several projects in Southern Africa, mainly in Malawi, Tanzania, Zambia, and Zimbabwe. His current research is focused on adoption, scaling, and impact assessment, with special interest in nudging agricultural technology adoption.
He is formerly a Postdoctoral Associate of the Department of Agricultural, Food and Resources Economics of Michigan State University and a Research Fellow and Lead of the Climate Change and Natural Resource Management thematic area at the Indaba Agricultural Policy Research Institute (IAPRI) in Lusaka, Zambia.
He holds a PhD in Applied Economics from the School of Economics and Business, Norwegian University of Life Sciences, an MSc in Applied and Agricultural Economics from the University of Malawi and a BSc in Agricultural Economics from the University of Zambia.
East African Seed Company has a rich history of nearly 50 years, serving farmers with improved climate-resilient seed varieties. Established in 1972, the company produces and sells improved seed, through a wide distribution network in at least 15 countries in sub-Saharan Africa. It also markets agrochemicals and other farm inputs, and has ambitions of expanding to the rest of Africa, trading as Agriscope Africa Limited.
Smallholder farmers in sub-Saharan Africa continue to face multiple biotic and abiotic stresses as they try to improve their farmsâ productivity and their livelihoods. Maize seed that guarantees high yield is a key trait, coupled with other key attributes such as drought tolerance, disease and pest resistance, early seedling vigor as well as suitability for food and animal feed.
With the varieties serving both small- and large-scale commercial farmers, challenges such as the fall armyworm, diminishing soil fertility and erratic rains have persisted in recent years and remain as key farming obstacles. âSuch challenges diminish crop production and the grain quality thereby, lessening farmersâ profitability,â says Rogers Mugambi, Chief Operating Officer of East African Seed Company.
Scientists at the International Maize and Wheat Improvement Center (CIMMYT), in collaboration with partners in the national agriculture research systems and the commercial seed sector, continue to develop seed varieties that can guarantee decent yield even in times of climatic, disease and pest stress.
General view of the East African Seed warehouse. (Photo: Jerome Bossuet/CIMMYT)
Top-notch research trickles down to farmers
Over the years, East African Seed has inked partnerships with CIMMYT, national research institutes and other agencies in the countries where it operates. Such partnerships have been the driving force to its success and the impacts within the farming communities in sub-Saharan Africa.
âOur collaboration with CIMMYT began in 2008 with germplasm acquisition. The cooperation has expanded to include testing networks for new hybrids, early-generation seed production and marketing. The overall beneficiary is the smallholder farmer who can access quality seeds and produce more with climate-smart products,â Mugambi says.
Apart from the multi-stress-tolerant varieties developed and released over time by the national agricultural research programs, CIMMYT recently announced a breakthrough: fall armyworm-tolerant elite maize hybrids for eastern and southern Africa. This success followed three years of rigorous research and experiments conducted in Kenya and signified a key milestone in the fight against fall armyworm.
As part of the partnership in the Drought Tolerant Maize for Africa (DTMA) and Stress Tolerant Maize for Africa (STMA) projects, East African Seed Company (Agriscope Africa Limited) established demonstration farms and conducted field days in Kenya, reaching thousands of farmers as a result. It was also able to produce early generation seed, which supported production of 2,000 metric tons of certified seed. This partnership now continues in the Accelerating Genetic Gains in Maize and Wheat (AGG) project.
The company has contracted large- and small-scale growers across the country to meet its seed production targets.
âMost of our small-scale growers are clustered in groups of up to 30 farmers with less than five acres of farmland. The large growers have advanced irrigation facilities such as the pivot system and seed processing plants. The seed from the fields is pre-cleaned and dried in the out-grower facilities before delivery to our factory for further cleaning and processing,â Mugambi explains.
A handful of improved maize seed from the drought-tolerant variety TAN 250, developed and registered for sale in Tanzania through CIMMYT’s Drought Tolerant Maize for Africa (DTMA) project. (Photo: Anne Wangalachi/CIMMYT)
Out with the drought
Currently, of the 1,300 metric tons of drought-tolerant hybrid seeds it produces yearly, 500 metric tons constitute those derived from the partnership in the STMA project. Two notable hybrids, Â HODARI (MH501) and TOSHEKA (MH401), were derived during the DTMA and STMA projects. Released in 2014 and accepted for regional certification through the Common Market for Eastern and Southern Africa (COMESA)âs regional catalogue, the MH501 is a mid-altitude adapted and medium maturing three-way cross hybrid. The yield advantage of 15% over the local commercial checks triggered widespread adoption by the farmers, according to Mugambi. In Kenya, it was used as a commercial check during national performance trials, from 2017 to 2019.
The MH401, an early maturing hybrid with moderate drought tolerance, has been adopted in lowland and mid-altitude dry ecologies of Kenya and Tanzania. It has a 20% yield advantage over the local commercial checks.
As part of its varietal replacement, East African Seed Company looks to steadily retire older varieties such as KH600-15A and WE1101 and promote new ones including TAJIRI (EASH1220), TAJI (MH502) and FARAJA (MH503).
To promote new varieties and successfully reach smallholders, the company conducts field days, farm-level varietal demonstrations, road shows and radio programs. It also disseminates information on the benefits of new varieties while also dispensing promotional materials such as branded t-shirts and caps.
âAdditionally, we organize annual field days at our research farm in Thika, where key and influential farmers and other stakeholders are invited from across Kenya and neighboring countries to learn about our new agricultural technologies,â Mugambi says.
The food security and livelihoods of smallholder farming families in sub-Saharan Africa depend on maize production. The region accounts for up to two-thirds of global maize production, but is facing challenges related to extreme weather events, climate-induced stresses, pests and diseases, and deteriorating soil quality. These require swift interventions and innovations to safeguard maize yields and quality.
In this Q&A, we reflect on the results and impact of the long-term collaborative work on drought-tolerant maize innovations spearheaded by two CGIAR Research Centers: the International Maize and Wheat Improvement Center (CIMMYT) and International Institute of Tropical Agriculture (IITA). This innovative work has changed guises over the years, from the early work of the Drought Tolerant Maize for Africa (DTMA) and Drought Tolerant Maize for Africa Seed Scaling (DTMASS) projects through later iterations such as Stress Tolerant Maize for Africa (STMA) and the newest project, Accelerating Genetic Gains in Maize and Wheat (AGG).
In this Q&A, three leaders of this collaborative research reflect on the challenges their work has faced, the innovations and impact it has generated for smallholder farmers, and possible directions for future research. They are: B.M Prasanna, director of CIMMYTâs Global Maize Program and of the CGIAR Research Program on Maize (MAIZE); Abebe Menkir, a maize breeder and maize improvement lead at IITA; and Cosmos Magorokosho, project lead for AGG-Maize at CIMMYT.
Briefly describe the challenges confronting small-scale farmers prior to the introduction of drought-tolerant maize and how CIMMYT and IITA responded to these challenges?
B.M.P.: Maize is grown on over 38 million hectares in sub-Saharan Africa, accounting for 40% of cereal production in the region and providing at least 30% of the populationâs total calorie intake. The crop is predominantly grown under rainfed conditions by resource-constrained smallholder farmers who often face erratic rainfall, poor soil fertility, increasing incidence of climatic extremes â especially drought and heat â and the threat of devastating diseases and insect pests.
Around 40% of maize-growing areas in sub-Saharan Africa face occasional drought stress with a yield loss of 10â25%. An additional 25% of the maize crop suffers frequent drought, with yield losses of up to 50%. Climate change is further exacerbating the situation, with devastating effects on the food security and livelihoods of the millions of smallholder farmers and their families who depend on maize in sub-Saharan Africa. Therefore, the improved maize varieties with drought tolerance, disease resistance and other farmer-preferred traits developed and deployed by CIMMYT and IITA over the last ten years in partnership with an array of national partners and seed companies across sub-Saharan Africa are critical in effectively tackling this major challenge.
A.M.: Consumption of maize as food varies considerably across sub-Saharan Africa, exceeding 100 kg per capita per year in many countries in southern Africa. In years when rainfall is adequate, virtually all maize consumed for food is grown in sub-Saharan Africa, with a minimal dependence on imported grain. Maize production, however, is highly variable from year to year due to the occurrence of drought and the dependence of national maize yields on seasonal rainfall. One consequence has been widespread famine occurring every five to ten years in sub-Saharan Africa, accompanied by large volumes of imported maize grain as food aid or direct imports.
This places a significant strain on resources of the World Food Programme and on national foreign exchange. It also disincentivizes local food production and may not prevent or address cyclical famine. It also leaves countries ill-equipped to address famine conditions in the period between the onset of the crisis and the arrival of food aid. Investment in local production, which would strengthen the resilience and self-sufficiency in food production of smallholder farming families, is a far better option to mitigate food shortages than relying on food aid and grain imports.
C.M.: Smallholder farmers in sub-Saharan Africa face innumerable natural and socioeconomic constraints. CIMMYT, in partnership with IITA and national agricultural research system partners, responded by developing and catalyzing the commercialization of new maize varieties that produce reasonable maize yields under unpredictable rainfall-dependent growing season.
Over the life of the partnership, more than 300 new climate-adaptive maize varieties were developed and released in more than 20 countries across sub-Saharan Africa where maize is a major staple food crop. Certified seed of over 100 stress-tolerant improved maize varieties have been produced by seed company partners, reaching more than 110,000 tons in 2019. The seeds of these drought-tolerant maize varieties have benefited more than 8 million households and were estimated to be grown on more than 5 million hectares in eastern, southern and west Africa in 2020.
A farmer in Mozambique stands for a photograph next to her drought-tolerant maize harvest. (Photo: CIMMYT)
In what ways did the drought-tolerant maize innovation transform small-scale farmersâ ability to respond to climate-induced risks? Are there any additional impacts on small scale farmers in addition to climate adaptation?
B.M.P.: The elite drought-tolerant maize varieties can not only provide increased yield in drought-stressed crop seasons, they also offer much needed yield stability. This means better performance than non-drought-tolerant varieties in both good years and bad years to a smallholder farmer.
Drought-tolerant maize varieties developed by CIMMYT and IITA demonstrate at least 25-30% grain yield advantage over non-drought-tolerant maize varieties in sub-Saharan Africa under drought stress at flowering. This translates into at least a 1 ton per hectare enhanced grain yield on average, as well as reduced downside risk in terms of lost income, food insecurity and other risks associated with crop yield variability. In addition to climate adaptation, smallholder farmers benefit from these varieties due to improved resistance to major diseases like maize lethal necrosis and parasitic weeds like Striga. We have also developed drought-tolerant maize varieties with enhanced protein quality â such as Quality Protein Maize or QPM â and provitamin A, which improve nutritional outcomes.
We must also note that drought risk in sub-Saharan Africa has multiple and far-reaching consequences. It reduces incentives for smallholder farmers to intensify maize-based systems and for commercial seed companies to invest and evolve due to a limited seed market.
Drought-tolerant maize is, therefore, a game changer as it reduces the downside risk for both farmers and seed companies and increases demand for improved maize seed, thus strengthening the commercial seed market in sub-Saharan Africa. Extensive public-private partnerships around drought-tolerant maize varieties supported the nascent seed sector in sub-Saharan Africa and has enabled maize-based seed companies to significantly grow over the last decade. Seed companies in turn are investing in marketing drought-tolerant maize varieties and taking the products to scale.
A.M.: The DTMA and STMA projects were jointly implemented by CIMMYT and IITA in partnership with diverse national and private sector partners in major maize producing countries in eastern, southern and western Africa to develop and deploy multiple stress-tolerant and productive maize varieties to help farmers adapt to recurrent droughts and other stresses including climate change.
These projects catalyzed the release and commercialization of numerous stress-resilient new maize varieties in target countries across Africa. Increasing the resilience of farming systems means that smallholder farmers need guaranteed access to good quality stress resilient maize seeds. To this end, the two projects worked with public and private sector partners to produce large quantities of certified seeds with a continual supply of breeder seeds from CIMMYT and IITA. The availability of considerable amount of certified seeds of resilient maize varieties has enabled partners to reach farmers producing maize under stressful conditions, thus contributing to the mitigation of food shortages that affect poor people the most in both rural and urban areas.
C.M.: The drought-tolerant maize innovation stabilized maize production under drought stress conditions in sub-Saharan Africa countries. Recent study results showed that households that grew drought-tolerant maize varieties had at least half a ton more maize harvest than the households that did not grow the drought-tolerant maize varieties, thus curbing food insecurity while simultaneously increasing farmersâ economic benefits. Besides the benefit from drought-tolerant innovation, the new maize varieties developed through the partnership also stabilized farmersâ yields under major diseases, Striga infestation, and poor soil fertility prevalent in sub-Saharan Africa.
How is the project addressing emerging challenges in breeding for drought-tolerant maize and what opportunities are available to address these challenges in the future?Â
Margaret holds an improved ear of drought-tolerant maize. Margaretâs grandmother participated in an on-farm trial in Murewa district, 75 kilometers northeast of Zimbabweâs capital Harare. (Photo: Jill Cairns/CIMMYT)
B.M.P.: A strong pipeline of elite, multiple-stress-tolerant maize varieties â combining other relevant adaptive and farmer-preferred traits â has been built in sub-Saharan Africa through a strong germplasm base, partnerships with national research partners and small- and medium-sized seed companies, an extensive phenotyping and multi-location testing network, and engagement with farming communities through regional on-farm trials for the identification of relevant farmer-preferred products.
CGIAR maize breeding in sub-Saharan Africa continues to evolve in order to more effectively and efficiently create value for the farmers we serve. We are now intensively working on several areas: (a) increasing genetic gains (both on-station and on-farm) through maize breeding in the stress-prone environments of sub-Saharan Africa by optimizing our breeding pipelines and effectively integrating novel tools, technologies and strategies (e.g., doubled haploids, genomics-assisted breeding, high-throughput and precise phenotyping, improved breeding data management system, etc.); (b) targeted replacement of old or obsolete maize varieties in sub-Saharan Africa with climate-adaptive and new varieties; (c) developing next-generation climate-adaptive maize varieties with traits such as native genetic resistance to fall armyworm, and introgressed nutritional quality traits (e.g., provitamin A, high Zinc) to make a positive impact on the nutritional well-being of consumers; and (d) further strengthening the breeding capacity of national partners and small and medium-sized seed companies in sub-Saharan Africa for a sustainable way forward.
A.M.:Â The DTMA and STMA projects established effective product pipelines integrating cutting-edge phenotyping and molecular tools to develop stress-resilient maize varieties that are also resistant or tolerant to MLN disease and fall armyworm. These new varieties are awaiting release and commercialization. Increased investment in strengthening public and private sector partnerships is needed to speed up the uptake and commercialization of new multiple stress-resilient maize varieties that can replace the old ones in farmersâ fields and help achieve higher yield gains.
Farmersâ access to new multiple-stress-tolerant maize varieties will have a significant impact on productivity at the farm level. This will largely be due to new varietiesâ improved response to fertilizer and favorable growing environments as well as their resilience to stressful production conditions. Studies show that the adoption of drought-tolerant maize varieties increased maize productivity, reduced exposure to farming risk among adopters and led to a decline in poverty among adopters. The availability of enough grain from highly productive and stress-resilient maize varieties can be the cheapest source of food and release land to expand the cultivation of other crops to facilitate increased access to diversified and healthy diets.
C.M.: Â The project is tackling emerging challenges posed by new diseases and pests by building upon the successful genetic base of drought-tolerant maize. This is being done by breeding new varieties that add tolerance to the emerging disease and pest challenges onto the existing drought-tolerant maize backgrounds. Successes have already been registered in breeding new varieties that have high levels of resistance to MLN disease and the fall armyworm pest.
Opportunities are also available to address new challenges including: pre-emptively breeding for threats to maize production challenges that exist in other regions of the world before these threats reach sub-Saharan Africa; enhancing the capacity of national partners to build strong breeding programs that can address new threats once they emerge in sub-Saharan Africa; and sharing knowledge and novel high-value breeding materials across different geographies to immediately address new threats once they emerge.
Cover photo: Alice Nasiyimu stands in front of a drought-tolerant maize plot at her family farm in Bungoma County, in western Kenya. (Photo: Joshua Masinde/CIMMYT)
Scientists are calling for accelerated adoption of new hybrid maize varieties with resistance to maize lethal necrosis (MLN) disease in sub-Saharan Africa. In combination with recommended integrated pest management practices, adopting these new varieties is an important step towards safeguarding smallholder farmers against this devastating viral disease.
A new publication in Virus Research shows that these second-generation MLN-resistant hybrids developed by the International Maize and Wheat Improvement Center (CIMMYT) offer better yields and increased resilience against MLN and other stresses. The report warns that the disease remains a key threat to food security in eastern Africa and that, should containment efforts slacken, it could yet spread to new regions in sub-Saharan Africa.
The publication was co-authored by researchers at the International Maize and Wheat Improvement Center (CIMMYT), Kenya Agricultural and Livestock Research Organization (KALRO), the Alliance for a Green Revolution in Africa (AGRA), the African Agricultural Technology Foundation (AATF) and Aarhus University in Denmark.
CIMMYT technician Janet Kimunye (right) shows visitors a plant with MLN symptoms at the MLN screening facility in Naivasha, Kenya. (Photo: CIMMYT)
Stemming the panic
The first reported outbreak of MLN in Bomet County, Kenya in 2011 threw the maize sector into a panic. The disease caused up to 100% yield loss. Nearly all elite commercial maize varieties on the market at the time were susceptible, whether under natural of artificial conditions. Since 2012, CIMMYT, in partnership with KALRO, national plant protection organizations and commercial seed companies, has led multi-stakeholder, multi-disciplinary efforts to curb MLNâs spread across sub-Saharan Africa. Other partners in this endeavor include the International Institute of Tropical Agriculture (IITA), non-government organizations such as AGRA and AATF, and advanced research institutions in the United States and Europe.
In 2013 CIMMYT established an MLN screening facility in Naivasha. Researchers developed an MLN-severity scale, ranging from 1 to 9, to compare varietiesâ resistance or susceptibility to the disease. A score of 1 represents a highly resistant variety with no visible symptoms of the disease, while a score of 9 signifies extreme susceptibility. Trials at this facility demonstrated that some of CIMMYTâs pre-commercial hybrids exhibited moderate MLN-tolerance, with a score of 5 on the MLN-severity scale. CIMMYT then provided seed and detailed information to partners for evaluation under accelerated National Performance Trials (NPTs) for varietal release and commercialization in Kenya, Tanzania and Uganda.
Between 2013 and 2014, four CIMMYT-derived MLN-tolerant hybrid varieties were released by public and private sector partners in East Africa. With an average MLN severity score of 5-6, these varieties outperformed commercial MLN-sensitive hybrids, which averaged MLN severity scores above 7. Later, CIMMYT breeders developed second-generation MLN-resistant hybrids with MLN severity scores of 3â4. These second-generation hybrids were evaluated under national performance trials. This led to the release of several hybrids, especially in Kenya, over the course of a five-year period starting in 2013. They were earmarked for commercialization in East Africa beginning in 2020.
Maize Lethal Necrosis (MLN) sensitive and resistant hybrid demo plots in Naivashaâs quarantine & screening facility (Photo: KIPENZ/CIMMYT)
Widespread adoption critical
The last known outbreak of MLN was reported in 2014 in Ethiopia, marking an important break in the virusâs spread across the continent. Up to that point, the virus had affected the Democratic Republic of the Congo, Kenya, Rwanda, Tanzania and Uganda. However, much remains to be done to minimize the possibility of future outbreaks.
âDue to its complex and multi-faceted nature, effectively combating the incidence, spread and adverse effects of MLN in Africa requires vigorous and well-coordinated efforts by multiple institutions,â said B.M. Prasanna, primary author of the report and director of the Global Maize Program at CIMMYT and of the CGIAR Research Program on Maize (MAIZE). Prasanna also warns that most commercial maize varieties being cultivated in eastern Africa are still MLN-susceptible. They also serve as âreservoirsâ for MLN-causing viruses, especially the maize chlorotic mottle virus (MCMV), which combines with other viruses from the Potyviridae family to cause MLN.
âThis is why it is very important to adopt an integrated disease management approach, which encompasses extensive adoption of improved MLN-resistant maize varieties, especially second-generation, not just in MLN-prevalent countries but also in the non-endemic ones in sub-Saharan Africa,â Prasanna noted.
The report outlines other important prevention and control measures including: the production and exchange of âcleanâ commercial maize seed with no contamination by MLN-causing viruses; avoiding maize monocultures and continuous maize cropping; practicing maize crop rotation with compatible crops, especially legumes, which do not serve as hosts for MCMV; and continued MLN disease monitoring and surveillance.
L.M. Suresh (center-right), Maize Pathologist at CIMMYT and Head of the MLN Screening Facility, facilitates a training on MLN with national partners. (Photo: CIMMYT)
Noteworthy wins
In addition to the development of MLN-resistant varieties, the fight against MLN has delivered important wins for both farmers and their families and for seed companies. In the early years of the outbreak, most local and regional seed companies did not understand the disease well enough to produce MLN-pathogen free seed. Since then, CIMMYT and its partners developed standard operating procedures and checklists for MLN pathogen-free seed production along the seed value chain. Today over 30 seed companies in Ethiopia, Kenya, Uganda, Rwanda and Tanzania are implementing these protocols on a voluntary basis.
âMLN represents a good example where a successful, large-scale surveillance system for an emerging transboundary disease has been developed as part of a rapid response mechanism led by a CGIAR center,â Prasanna said.
Yet, he noted, significant effort and resources are still required to keep the maize fields of endemic countries free of MLN-causing viruses. Sustaining these efforts is critical to the âfood security, income and livelihoods of resource-poor smallholder farmers.
To keep up with the diseaseâs changing dynamics, CIMMYT and its partners are moving ahead with novel techniques to achieve MLN resistance more quickly and cheaply. Some of these innovative techniques include genomic selection, molecular markers, marker-assisted backcrossing, and gene editing. These techniques will be instrumental in developing elite hybrids equipped not only to resist MLN but also to tolerate rapidly changing climatic conditions.
Cover photo: Researchers and visitors listen to explanations during a tour of infected maize fields at the MLN screening facility in Naivasha, Kenya. (Photo: CIMMYT)
