The world needs better management of water, soil, nutrients, and biodiversity in crop, livestock, and fisheries systems, coupled with higher-order landscape considerations as well as circular economy and agroecological approaches.
CIMMYT and CGIAR use modern digital tools to bring together state-of-the-art Earth system observation and big data analysis to inform co-design of global solutions and national policies.
Our maize and wheat genebanks preserve the legacy of biodiversity, while breeders and researchers look at ways to reduce the environmental footprint of agriculture.
Ultimately, our work helps stay within planetary boundaries and limit water use, nutrient use, pollution, undesirable land use change, and biodiversity loss.
“I retired quite recently, however, I have a lot to do. I wish to mentor young scientists about on how to increase food production. I also look forward to working on several high-profile projects with farmers to tackle future issues they might face due to the climate changes on a crop like wheat,â shares the scientist.
Singh was honored with the Pravasi Bharatiya Samman by the Government of India in January 2021, recognizing his outstanding achievements by non-resident Indians, persons of Indian origin, or organizations or institutions run by them either in India or abroad. He received this for his role in the development, release, and cultivation of more than 550 wheat varieties over the past three decades.
Singh has also been included among the top one percent of highly-cited researchers, according to Clarivate Analytics-Web of Science every year since 2017.
Smallholder farmers display a range of small and large grains at the agroecology seed fair in Mbire, Zimbabwe. (Photo: Tawanda Hove/CIMMYT)
Smallholder farmers in resource-poor communities of Zimbabwe and much of the Global South have been experiencing low crop productivity due to many factors, including inappropriate seeds and seed varieties, labor shortages, loss of agro-biodiversity, insufficient inputs, degrading soils, and recurrent droughts. These threats are now amplified by climate change.
This has resulted in broken food systems rendering food and nutrition insecurity commonplace. The One CGIAR initiative, Transformational Agroecology Across Food, Land, and Water Systems, led by the International Maize and Wheat Improvement Center (CIMMYT) in Zimbabwe, is designed to bring agroecological advances to smallholder famers in an effort to strengthen local food systems.
Smallholder farmers in the Mbire and Murehwa Districts of Zimbabwe were introduced to innovative agroecology interventions, premised on harnessing nature’s goods and services while minimizing adverse environmental impacts and improving farmer-consumer connectivity, knowledge co-creation, and inclusive relationships among food system actors.
Smallholder farmers register for the agroecology seed fair in Mbire, Zimbabwe. (Photo: Tawanda Hove)
Farmer to farmer collaboration at seed fairs
In response to challenges related to lack of appropriate seeds and eroding agrobiodiversity and, as a way to transition prevailing food systems to more sustainable ones, farmers were invited to take part in seed fairs. The seed fair’s objective was to enable smallholder farmers to access improved and locally adapted seeds of food crops originating from the private sector and fellow farmers. In addition, the seed fairs provided a platform for learning about agroecological practices. Farmers were also given a chance to see different machinery that could aid in land, food, and feed preparation, and address their labor shortage challenges.
At the opening of the seed fair in Mbire, Dorcas Matangi, CIMMYT research associate, acknowledged that smallholder farmers operate in challenging and complex ecological, social, and economic systems and there is a need for interventions that address the natural resource base without ignoring the social and economic dynamics within communities.
âThe communal culture of sharing and trading between community members can be capitalized on for a collective benefit, said Matangi. âOne such case is through events such as seed fairs where we encourage farmers to showcase and sell seeds they know perform very well.”
She further explained to the participating farmers how increasing their crop diversity and using practices such as conservation agriculture techniques benefit the environment and improves food security and nutrition.
âI am grateful for these efforts,â said Grace Musandaira, supervisor of the Agriculture Advisory and Rural Development Service. âOur region is arid, and as such, it is very difficult for our farmers to achieve significant yields to assure them there is enough food for the year. In addition, the knowledge provision relating to preserving and improving agrobiodiversity through agroecological practices is set to improve rural livelihoods.â
Senzeni Nyagonye, a farmer in Mbire, said “This initiative is teaching and exposing us to so many new concepts such as conservation agriculture with mechanization. If we can apply conservation agriculture with the seeds we bought at this seed fair, we are optimistic about a great harvest.â
A total of 1,058 farmers attended two seed fairs in Mbire and Murehwa. Farmers had the opportunity to access a variety of crop seeds ranging from maize, to sorghum, millets, groundnuts, bambara groundnuts, and sunflowers. More than 200 farmers exhibited local seeds that were available for sale or exchange. Private seed companies also showcased and sold certified drought-tolerant maize, sorghum, bean and cowpea varieties.
âThe seed fairs in Mbire and Murehwa were very successfulâ, said Matangi. âAnd we feel these efforts will serve as a useful case study to guide a national scale-up.â
Fall armyworm (FAW) is present in 109 countries in Africa, the Middle East, South and East Asia, and Oceania, and it has spread due to rapid increases in global trade. Maize is highly susceptible to the disease, but it affects more than 300 plant species.
Research by organizations such as the International Maize and Wheat Improvement Center (CIMMYT), CGIAR and CABI has developed effective strategies and tools for managing the disease, such as improved seed, proven agronomic practices, and biologic and chemical crop-protection tools.
An article in The Farming Forum explores FAW prevention developments and partnerships that are helping smallholder farmers protect their crops against this devastating disease.
Nitrogen use efficiency (NUE) and tomato production in Nepal have both been negatively affected by universal fertilizer recommendations that do not consider the soil type, nutrient status, or climate and crop management practices. Improved use of appropriate levels of nitrogen (N) fertilizer, application time, and application methods could increase yields and reduce environmental impact.
Scientists from the International Maize and Wheat Improvement Center (CIMMYT), the Nepal Agricultural Research Council (NARC), the National Soil Science Research Center (NSSRC), and the International Fertilizer Development Center completed a study to identify the optimum N rate and application method to increase NUE and tomato crop yield as part of the Nepal Seed and Fertilizer (NSAF) project.
Randomized trials with nine treatments across five districts included the omission of N, phosphorus (P) and potassium (K) (N0, P0, K0), variable N rates of 100, 150, 200 and 250 kg haâ1Â (N-100, N-150, N-200 and N-250), use of urea briquettes (UB) with deep placement (UBN-150) and a control (CK).
Considering its anticipated higher NUE, N input in UB was reduced from the recommend N rate of 200 kg haâ1 by a quarter. N was revealed as the most limiting plant nutrient based on yield responses from an NPK omission plot.
Tomato yield was increased by 27 percent, 35 percent, 43 percent, and 27 percent over N0 with respective applications of fertilizer at N-100, N-150, N-200 and N-250. Yields responded quadratically to the added N fertilizers, with optimum rates ranging from 150 to 200 kg haâ1.
UBN-150 produced a similar yield to the recommended rate of N-200 and significantly increased tomato yield by 12% over N-150.
At N-100, scientists observed the highest partial factor productivity of N (PFPN), while at N-200, the highest agronomic efficiency of N (AEN) was recorded.
Results suggest that there is opportunity to develop more efficient N fertilization strategies for Nepal, leading to benefits of higher yields and less environmental damage.
Cover photo: Generic, non-specific recommendations for fertilizer use in Nepal have affected the production of tomato crops. (Photo: Dilli Prasad Chalise/CIMMYT)
At COP15, Sarah Hearne gives an overview of the CGIAR Allele Mining Initiative projects and their potential role in conserving biodiversity and nature. (Photo: Michael Halewood/Alliance of Bioversity International and CIAT)
Prioritizing the protection of biodiversity is an essential part of mitigating and adapting to the effects of climate change and global warming. At the 15th meeting of the Conference of the Parties to the UN Convention on Biological Diversity (CBD) (COP15), held between December 7-19 in Montreal, Canada, emphasis was placed on the important role of nature in meeting the Sustainable Development Goals (SDGs), proposing the adoption of a bold global biodiversity framework that addresses the key drivers of nature loss to secure health and wellbeing for humanity and for the planet.
On December 7, scientists from the International Maize and Wheat Improvement Center (CIMMYT), together with colleagues from CGIAR research centers and the secretariat of the International Treaty on Plant Genetic Resources for Food and Agriculture, presented at a COP15 side event on how Digital sequence information (DSI) is changing the way genetic resources are used in agricultural research and development and implications for new benefit-sharing norms.
The session, organized by the CGIAR Initiative on Genebanks explored the role of DSI to conserve crop and livestock genetic diversity and explore and utilize that diversity in plant and animal breeding programs.
Attendees at the COP15 side event on DSI discover how genetic resources are used in research and development for agriculture. (Photo: Michael Halewood/Alliance of Bioversity International and CIAT)
Carolina Sansaloni, wheat germplasm bank curator and genotyping specialist, illustrated how DSI is being used in the CIMMYT wheat collection to analyze structure, redundancies, and gaps, further detailing how generation and use of DSI to conduct similar analyses within national genebanks in Latin America is being supported through collaborative efforts of CIMMYT and the Alliance of Bioversity and CIAT.
The take-home message was that genetic diversity and germplasm bank collections, when explored at âglobal scaleâ with modern tools and diverse partnerships, offer a powerful resource in the efforts to mitigate the impacts of climate change. This potential is only realized through appropriate generation and sharing of DSI generated from collections of many countries of origin.
Higher levels of potential carbon mineralization (Cmin) in soil indicate that the soil is healthier. Many reports indicate that Cmin in agricultural soils increases with reductions in soil disturbance through tillage, but the mechanisms driving these increases are not well understood.
The International Maize and Wheat Improvement Center (CIMMYT) has established a network of research platforms in Mexico, where collaborating scientists evaluate conservation agriculture and other sustainable technologies to generate data on how to improve local production systems. This network of research trials, many of which have over five years in operation, allowed us to participate with Mexican sites in the North American Project to Evaluate Soil Health Measurements (NAPESHM). This project aimed to identify widely applicable soil health indicators and evaluate the effects of sustainable practices on soil health in 124 long-term experiments across Canada, the United States of America, and Mexico.
Experienced field teams from CIMMYT sampled the soils from 16 experiments in Mexico, which were then analyzed by the Soil Health Institute for this study. Potential carbon mineralization, 16S rRNA sequences, and soil characterization data were collected, with results demonstrating that microbial (archaeal and bacterial) sensitivity to physical disturbance is influenced by cropping system, the intensity of the disturbance, and soil pH.
A subset of 28 percent of amplicon sequence variants were enriched in soils managed with minimal disturbance. These enriched sequences, which were important in modeling Cmin, were connected to organisms that produce extracellular polymeric substances and contain metabolic strategies suited for tolerating environmental stressors.
The unique sampling design of this study â analyzing across a variety of agricultural soils and climate â allows to evaluate management impacts on standardized measures of soil microbial activity. Additionally, understanding the microbial drivers of soil health indicators like Cmin can help with the interpretation of those indicators and ultimately the understanding of how to better manage soils.
Across the globe, smallholder farming communities only have limited resources to improve their financial and food security, and soil degradation is common. Ecological nutrient management (ENM), an agroecological approach to managing the biogeochemical cycles that regulate soil ecosystem services and soil fertility, can prevent degradation and preserve soil health.
Five principles guide ENM strategies:
Building soil organic matter and other nutrient reserves.
Minimizing the size of nitrogen (N) and phosphorus (P) pools that are most vulnerable to loss.
Maximize agroecosystem capacity to use soluble, inorganic N and P.
Use functional biodiversity to maximize presence of growing plants, biologically fix nitrogen and access sparingly soluble phosphorus.
Construct agroecosystem and field scale mass balances to track net nutrient flows over multiple growing seasons.
At the ICRISAT headquarters in Patencheru, India, M.L. Jat and Sieg Snapp stand in front on pigeonpea (Cajanus cajan) varieties, a semi-perennial legume that fixes nitrogen and solubilizes phosphorus for greater nutrient efficiency while building soil health. (Photo: Alison Laing/CSIRO)
Using functionally designed polycultures, diversified rotations, reduced fallow periods, increased reliance on legumes, integrated crop-livestock production, and use of a variety of soil amendments exemplify how ENM works in practice. A key principle is to underpin agroecosystem resilience through the promotion of soil organic matter accrual and restoration of soil function.
Strategic increases of spatial and temporal plant species diversity are used, that meet farmer requirements. This often involves perennial or semi-perennial bushes and vines that provide food, fuel and fodder while restoring soil fertility. ENM long-term management systems can increase yields, yield stability, profitability, and food security, thus addressing a range of smallholder needs.
Cover photo: A maize-bean intercrop that exemplifies the ENM approach, taken at CIMMYTâs Chiapas Hub, a long-term field experiment. (Photo: Sieg Snapp/CIMMYT)
Basanta Shrestha, Vice-Chair of FAN, shares the objectives of the public-private dialogue with Govinda Prasad Sharma, Secretary of MoALD (seated left) ,Mrigendra Kumar Singh Yadav, Honorable Minister of MoALD (seated center), Chandrakanta Dallakoti, Chairperson of FAN (seated right), and other participants. (Photo: Aayush Niroula/CIMMYT)
Fertilizer supply shortages are a chronic problem in Nepal, where thousands of farmers are often unable to access the required quantities on time. This is particularly common during the cultivation of rice â the major staple food crop for the country.
Some of the critical challenges to meeting fertilizer demand include limitations to import mechanisms and budget allocation for fertilizer subsidies by the Government of Nepal. Additionally, the successive COVID-19-induced lockdowns and Russia-Ukraine war have further deepened the crisis in the past two years by significantly delaying imports and increasing fertilizer prices. This continuous gap in supply has compelled farmers to buy fertilizers from the countryâs unofficial or âgrayâ markets.
To address these shortcomings, researchers on the Nepal Seed and Fertilizer (NSAF) project, implemented by the International Maize and Wheat Improvement Center (CIMMYT), have been supporting the Fertilizer Association of Nepal (FAN) and the Ministry of Agriculture and Livestock Development (MOALD) to resolve policy issues that will enhance fertilizer distribution efficiency.
Fertilizer sector stakeholders participate in a panel discussion at the public-private dialogue. (Photo: Aayush Niroula/CIMMYT)
On 23 September 2022, the NSAF project team joined representatives from the International Fertilizer Development Center (IFDC) and FAN to organize a policy dialogue around improving the countryâs fertilizer supply system. Held in Kathmandu, the event brought together concerned public and private sector stakeholders to discuss existing challenges and propose different policy alternatives that ensure the timely availability of fertilizers in the required quantities.
Representatives from FAN presented the key issues and challenges in the sector while NSAF project coordinator Dyutiman Choudhary presented the findings of different fertilizer policy studies conducted jointly with local partners. The results showed that involving the private sector in distribution improved farmers’ access to fertilizers compared to distribution carried out solely by cooperatives. The study also indicated a potential to reduce fertilizer subsidies and increase import volume to help meet demand.
Lynn Schneider, Deputy Director of USAID Economic Growth Office shares her remarks at the policy dialogue. (Photo: Dyutiman Choudhary/CIMMYT)
Improving national supply systems
The event featured a panel discussion, where participants shared their experiences and outlined the issues faced by private sector importers, logistic service providers and retailers, and policymakers from federal and provincial governments while engaging in their respective functions. The panel members also suggested a number of different ways to improve national fertilizer supply systems, such as:
Restructuring fertilizer subsidy programs, i.e. reducing the current subsidy by 20-30% (a recommendation from the NSAF assessment) and using budget savings to increase imports and allocate subsidies based on fertilizer demand.
Making a procurement process timeline to ensure timely fertilizer supply for three major crops â rice, wheat, and maize â and importing about 30% of the total fertilizer through Government-to-Government (G2G) agreement.
Implementing a crisis management strategy by maintaining buffer stocks (20% of the demand).
Ensuring a level playing field for the private sector in the import and distribution of the fertilizers.
The dialogue concluded with mutual agreement by stakeholders from the public and private sectors to improve local fertilizer distribution through private sector engagement. They agreed to revise some clauses specified in the Nepal Fertilizer Distribution Directive 2020 related to profit margins, volumes, classification of fertilizer distributors and selling fertilizers. Govinda Prasad Sharma, secretary of MOALD, informed attendees that the ministry has already started planning fertilizer procurement based on actual demand and gave assurances about G2G agreements with neighboring countries such as India to bring in fertilizers for distribution during times of peak demand. Sharma also agreed to continue supporting the private sector in capacity building to import fertilizers and to revise subsidies to make more fertilizers available.
âIt is our great pleasure to see all fertilizer-related stakeholders in a common platform, which is critical to bring out key issues and cooperation between the public and private sector,â said Lynn Schneider, deputy director of the Economic Growth Office at USAID Nepal. Schneider also emphasized the importance of generating efficiency in estimating fertilizer demand and supply and fertilizer types by using Nepalâs digital soil map, working in close coordination with provincial and local governments, and increasing the role of the private sector to ensure fertilizer supply to meet crop requirements in the peak season.
Attendees at the Public Private Dialogue on Improving Fertilizer Supply System in Nepal (Photo: Aayush Niroula/CIMMYT)
The Nepal Seed and Fertilizer project is supported by the United States Agency for International Development (USAID) and is a flagship project in Nepal. It aims to build competitive and synergistic seed and fertilizer systems for inclusive and sustainable growth in agricultural productivity, business development and income generation in Nepal.
The workshop, attended by 33 participants from 14 countries, was held at CIMMYT headquarters and highlighted topics such as the analysis of genotypic data derived from the DArTseq platform and the analysis of gaps in germplasm collections.
“It was very gratifying to be able to form this Latin American network of germplasm banks together with our colleagues from the Alliance of Bioversity International and CIAT,”said Carolina Sansaloni, Wheat Germplasm Bank Curator & Genotyping Specialist. “Training and knowledge exchange among germplasm banks is essential for better conservation, exploration and utilization of genetic resources in each country.”
Some of the participants shared the following comments and feedback:
“Excellent initiative, it is a fundamental support for the strengthening of plant genetic resources conservation systems and the creation of international collaborative networks. Thanks to CIMMYT and the Alliance of Bioversity International and CIAT for the invitation.” Mexico’s National Institute for Forestry, Agriculture and Livestock Research (INIFAP)
“Excellent workshop, a very important space for the exchange of knowledge and experiences, it also allows the formation of collaborative work networks between institutions and professionals from different countries with related research.” Escuela de Ciencias Agrarias, Universidad Nacional Costa Rica
“This workshop has allowed me to get in contact with colleagues from Latin America and to open the possibility of working together to advance in the characterization and contribute to the conservation of the collections we manage.” Instituto Nacional de TecnologĂa Agropecuaria, Argentina
“This has been a very profitable week for me as curator of the germplasm bank in Brazil. I learnt new concepts and tools that will generate advances in my work.” Brazilian Agricultural Research Corporation (EMBRAPA)
In the summer monsoon season preceding planting in the winter, farmers typically use low-density polyethylene (LDPE) bags contained within woven polypropylene bags to store their wheat seed. Seed quality typically deteriorates over the monsoon as a result of increased seed moisture and pests that are associated with high humidity and temperature.
After initially being consulted by survey and detailed focus group interactions on the design of the trial, 80 wheat farming households participated in a 30-week action research process by conducting trials to compare seed storage methods. This included comparing hermetic SuperGrainbagsÂź (Premium RZ) against LDPE bags, both with and without the addition of dried neem tree leaves (Azadirachta indica), the latter representing a common method used by farmers in Bangladesh to improved stored seed.
Results of the trials demonstrated that seed germination and seedling coleoptile length were greater, and that seed moisture was maintained at levels close to before storage in SuperGrainbagsÂź compared to LDPE bags. The use of neem however had no effect on these factors.
Furthermore, hermetic bags were more effective in lessening seed damage caused during the storage process, but neem slightly reduced damage rates for seeds stored using traditional methods compared to SuperGrainbagsÂź.
In relation to diseases and pests, SuperGrainbagsÂź suppressed Coleopteran pests and blackspot, while storing neem alongside the seeds in LDPE bags had a slight additional pest suppressive effect.
Scoring by both men and women farmers revealed their preference for SuperGrainbagsÂź hermetic storage. The study recommends actions for value chain development to increase farmersâ access to improved hermetic storage options at low cost.
Cover photo: A female farmer in a field of wheat in Bangladesh, where participatory research is helping farmers adapt to better ways of storing seeds. (Photo: Ranak Martin/CIMMYT)
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.
âTo meet expected wheat demand for 2050, production will need to double, which means increasing harvests nearly 70 kilograms per hectare each year,â said Leonardo Crespo-Herrera, CIMMYT wheat scientist and 2022 Japan Award recipient. âBreeding will be a major contributor, but better agronomic practices and policies will also be critical.â (Photo: CIMMYT)
International science to save wheat â a crucial food grain for 2.5 billion of the worldâs poor â from a rising tide of insect pests known as aphids was lauded on November 22 with the 2022 Japan International Award for Young Agricultural Researchers (the Japan Award).
The 2022 Japan Award recognized novel breeding approaches to identify and select for genetic resistance in wheat to two species of aphids that cause wheat grain losses reaching 20% and whose rapid spread is propelled by rising temperatures.
Aphid resistant wheat can contribute to more sustainable food production, protecting farmersâ harvests and profits, while reducing the need to use costly and harmful insecticides, said Leonardo Crespo-Herrera, bread wheat improvement specialist for the International Maize and Wheat Improvement Center (CIMMYT) and one of the three 2022 Japan Award recipients.
âIn addition to genetic yield potential, CIMMYT wheat breeding focuses on yield stability, disease resistance, and nutritional and end-use quality,â Crespo-Herrera explained. âAdding another target trait â aphid resistance â makes wheat breeding much more challenging.â
Efficient and effective field testing to confirm the genetics
Crespo-Herrera and his CIMMYT colleagues managed to identify and characterize genome segments responsible for aphid resistance in wheat and its near relatives, as well as running innovative field tests for a set of elite wheat breeding lines that were predicted to carry that resistance.
âWith the aphid species called the greenbug, its feeding causes yellowing and necrotic spots on wheat, so we could actually measure and score wheat plants in plots that we deliberately infested with the aphids, keeping the resistant lines and throwing out the susceptible ones,â said Crespo-Herrera.
For the other species, the bird cherry-oat aphid, the only visible feeding damage is when the plants become stunted and die, so Crespo-Herrera and colleagues instead measured biomass loss and reduced growth in 1,000 artificially infested wheat lines, identifying a number of lines that had low scores for those measurements. Given that the lines tested came from a set that had already shown resistance to the greenbug, some of the successful lines feature resistance to both aphid species.
For the bird cherry-oat aphid, in two years of additional field tests, Crespo-Herrera and his team found that aphid populations were lower in plots sown with resistant wheat lines. âThe experiments included remote sensing measurements that identified certain spectral signatures correlated with aphid populations; this may help us to assess resistance in future field trials.â
The researchers also found that a cutting-edge approach known as âgenomic predictionâ provided good estimations regarding promising, aphid-resistant wheat breeding lines.
Motivating young researchers in research and development
Established in 2007, the Japan Award is an annual prize organized by the Agriculture, Forestry and Fisheries Research Council (AFFRC) of Japanâs Ministry of Agriculture, Forestry and Fisheries (MAFF) and supported by the Japan International Research Center for Agricultural Sciences (JIRCAS). Awardees receive a $5,000 cash prize.
In an excerpt of an official note regarding Crespo-Herreraâs research, those agencies said  ââŠThis study has been highly evaluated for developing (wheat) lines that have been distributed worldwide for use in wheat breeding, and the methods of this study have been applied to develop varieties with resistance mechanisms against various kinds of insects, not only aphids.â
Crespo-Herrera thanked JIRCAS and MAFF for the award. âI feel honored to have been selected.â
Kazakhstan is the ninth largest country in the world and the fourteenth largest producer of wheat; in 2021 alone, the country produced 14.3 million tons (t) of wheat on 12.1 million hectares (ha). Despite this impressive figure, wheat yield in the country falls below average at 1172.5 t/ha compared to 3474.4 t/ha globally.
Research into wheat diseases in Kazakhstan has primarily revolved around airborne fungal foliar diseases, such as stem rust, leaf rust and stripe rust, which can be devastating for farmers and their crops. However, the effects of fungi relating to wheat root and crown root were yet to be examined â these diseases affect yields, stands and grain quality due to infections that cause damping-off, blight, necrosis, and dry rotting.
Using plant samples taken during the 2019 growing season, scientists from the International Maize and Wheat Improvement Center (CIMMYT) conducted a quantitative survey to determine the distribution of this fungi. Using morphological and molecular tools on 1,221 samples from 65 sites across the central, eastern, and southeastern region, scientists found that Bipolaris sorokiniana and Fusarium acuminatum were the most predominant fungal species isolated.
In total, 74 isolates from 16 species were tested, revealing that F. culmorum and F. pseudograminearum, B. sorokinaiana, Fusarium sp., R. solani, F. redolens, C. spicifera, C. inaequalis, and N. orvzae were virulent fungi.
Results show the diverse spectrum of pathogenic fungal species linked to wheat crown and root rot in Kazakhstan and is highly likely to be the first report from the country on the presence of F. seudograminearum, Fusarium sp., C. spicifera, and C. inaequalis.
With this new data, scientists can develop mitigations to prevent crop loss and improve wheat yield across Kazakhstan.
Cover photo: The scientists from Turkey researching root and crown rot in Kazakhstani wheat: Abdelfattah A. Dababat (CIMMYT), Mustafa Imren (Bolu Abant Izzet Baysal University), Göksel Ăzer (Bolu Abant Izzet Baysal University) and Rauan Zhapayev. (Photo: Abdelfattah A. Dababat/CIMMYT)
Since the outbreak of FAW was reported in 2016, maize yields have dropped by between 30-50 percent, increasing the country’s challenges for food security.
Prasanna Boddupalli, Director of the Global Maize Program at CIMMYT, said, âłWe want farmers to dissociate from application of synthetic toxic pesticides and chemicals but revert to use of combined approaches like use of resistant varieties, bio-pesticides and related biological control methods that are environmentally friendly.”
Preliminary assessment of the viability of naturally tolerant maize varieties from Mexico suggests that at least two or three resistant varieties may be approved after certification from the regulator.
Learning to evaluate wheat stem rust, a significant cause of crop loss, in the field in Kenya. (Photo: Petr Kosina/CIMMYT)
With rising demand for food, it is more critical than ever to address the challenge of crop losses due to pests and diseases. Current limited understanding of the extent of the problem prevents the advancement and implementation of plant health solutions. Global scientific collaboration is integral to ensure policy recommendations are well-informed by robust evidence and therefore more likely to succeed in the long-term.
The issue of global burden of crop loss closely correlates with the objectives of the One CGIAR Plant Health Initiative, which aims to prevent and manage major pest and disease outbreaks through the development and deployment of inclusive innovations and by building effective national, regional, and global networks. The Initiative, which is being led by the International Maize and Wheat Improvement Center (CIMMYT), will support low- and middle-income countries in Africa, Asia, and Latin America to reduce crop losses due to pests and diseases, and improve food security and livelihoods for smallholder farmers.
Data-driven approaches
The Global Burden of Crop Loss project, which is run by the Centre for Agriculture and Bioscience International (CABI), is working to ensure that there is accurate data on the challenges posed by plant pests and diseases. Questions to understand include where crop losses are the highest, the causes behind these losses, and how best these they can be addressed.
Cambria Finegold, Global Director, Digital Development, CABI said, âIf you are not measuring crop loss well, then you donât know if the extraordinary $25.8 billion spent annually on agricultural research and development is working, or if we are spending it in the right ways.â
Research by the Plant Health Initiative will play a significant role in collecting and disseminating data on some major pests and diseases, which can guide scientists on which areas to prioritize, thereby contributing to an impactful research agenda.
Once data is gathered, CABI aims to inform decision-making for actors at the top levels of the plant health system and ensure that appropriate action is taken to safeguard global food security with the limited resources available.
Integrated pest management strategies have been key in dealing with fall armyworm in Africa and Asia. (Photo: B.M. Prasanna/CIMMYT)
Establishing global networks
The value of a data-driven approach was emphasized at a session organized by the Global Burden of Crop Loss on October 14 exploring evidence-based systems to tackle food security. This session was a side event of the UN Food and Agriculture Organization (FAO) Science and Innovation Forum, which this year focused on highlighting the centrality of science, technology and innovations for agrifood systems transformation.
Prasanna Boddupalli, One CGIAR Plant Health Initiative Lead and Director of CIMMYTâs Global Maize Program, explained how the Initiative will bridge knowledge gaps, build risk assessment and rapid response capability, improve integrated pest and disease management, design and deploy tools to prevent contamination of food chains, and promote gender-equitable and socially inclusive innovations for plant health.
With six devastating plant epidemics in Africa alone during the last decade and an increased number of climate change-induced droughts and floods, Boddupalli proposed a revitalized strategy using the objectives of the Plant Health Initiative.
Built on a foundation of partnerships, there are more than 80 national, regional, and international organizations involved in the Initiative across 40 countries in the Global South, in addition to the CGIAR research centers. Through this rapidly expanding collaboration, the focus will be on establishing regional diagnostic and surveillance networks and implementing Integrated Pest Management (IPM) and integrated mycotoxin management.
To address the need for evidence-based policy recommendations, Boddupalli explained the purpose of the Plant Health Innovation Platforms in Africa, Asia and Latin America, leveraging the partnersâ research sites. Combining innovations from the CGIAR system, national partners and the private sector, these platforms will enable the co-creation and validation of pest and disease management packages, with the aim of significantly improving adoption of effective and affordable plant health innovations by smallholder farmers.
Removing the barriers for data sharing
The Plant Health Initiative team has recently collected and collated information from national partners and the private sector on actions needed to remove constraints on sharing pest and disease surveillance data. Potential solutions include improved training of national partners, joint research projects, pre-defined processes for data sharing, and focusing on work that meets national and regional priorities.
These approaches will inform the sharing of data collected through the Initiative. For example, researchers are gathering surveillance data on 15 crop pests affecting seven different plants in 25 countries, with the expectation of collecting more than 44,000 samples from 2,100 sites in 2022 alone, with plans for sharing the results with partner institutions.
Boddupalli also emphasized the importance of ramping up remote sensing and drone usage, wherever feasible, for diagnostics and surveillance. However, the current gaps in accessing data and computing facilities in the Global South need to be addressed to make this a reality.
âThe OneCGIAR Plant Health Initiative and the Global Burden of Crop Loss project have excellent complementarity,â said Boddupalli. Both have an opportunity to generate and share robust data on crop loss due to existing and emerging crop pests and diseases and use this data to drive effective policy change on plant health management.â
About the Global Burden of Crop Loss:
The Global Burden of Crop Loss initiative is modelled after the Global Burden of Disease initiative in human health, which has transformed health policy and research, over the last 25 years through better use of data.Â
The initiative aims to have a similar impact in agriculture, providing evidence to enable the global plant health community to generate actionable information and lead to a dramatic reduction in crop loss, resulting in increased food security and trade.
About the Centre for Agriculture and Bioscience International (CABI):
CABI is an international, inter-governmental, not-for-profit organization that improves peopleâs lives worldwide by providing information and applying scientific expertise to solve problems in agriculture and the environment.
Their approach involves putting information, skills and tools into people’s hands. CABI’s 49 Member Countries guide and influence their work which is delivered by scientific staff based in their global network of centers.
