Kevin Pixley, Deputy Director General for Research (Breeding and Genetics), a.i., and Director of the Genetic Resources Program, said, “This was not easy due to the challenges of gathering and analyzing complex data, but it’s a very important milestone for CIMMYT. Peer review in a highly respected journal is a gold standard that gives external critique and endorsement to the impact assessment methods used and estimates reported for CIMMYT and IITA’s work with partners in Africa.”
Around 60 percent of the 1,345 maize varieties released in this twenty-year period had a known CGIAR parentage.
Approximately 34 percent of the total maize area in 2015 was cultivated with CGIAR-related maize varieties from 1995 onwards, equivalent to 9.5 million hectares (ha); 13 percent of the maize area was under CGIAR-related varieties released before 1995.
The new maize varieties hold an economic benefit for the region, with an estimated value of US $1.1-1.6 billion in 2015 equally attributed to CGIAR, public-sector national research and extension programs, and private sector partners. With maximum annual investment in CGIAR maize breeding sitting at US $30 million, the estimated benefit-cost ratio for investment was between 12:1-17:1, depending on the underlying assumptions.
“This paper is a valuable contribution to literature on impact assessment, highlighting the real challenges and approaches to quantify impact of work that is a collaboration among many,” continued Pixley. “Both the methodologies and impact estimates will be valuable to researchers and funders of plant breeding programs.”
Over the next 10 years, maize is due to become the most widely grown and traded crop globally and is already the cereal with the highest production volume. Its versatility offers multiple purposes – as a livestock feed in both developed and developing economies, as a key component of human diets in several low- and middle-income countries in sub-Saharan Africa, Latin America and Asia, and for an array of non-food uses worldwide.
The study primarily focused on the Global South, where intensive work is being done to transform the agrifood systems in which maize plays a key role. Through scientific advancements over time, maize yields have increased, although heterogeneously, while the area under cultivation of maize has also expanded due to sharply growing demand.
Research determined that this transformation offers opportunities for investment in maize research and development (R&D) to determine ways that production and productivity can be significantly improved without expanding maize area or creating negative impacts on the environment.
The International Maize and Wheat Improvement Center (CIMMYT) Director General, Bram Govaerts, participated in a panel discussion on applied maize science to sustainably feed the world as part of the International Maize Congress on October 19-20, 2022 in Argentina.
The congress was organized by the governments of Córdoba and of the Central Region provinces of Argentina, together with the Argentine Maize and Sorghum Association (MAIZAR) and the Córdoba Grain Exchange.
Other panelists for the session included representatives from Argentina’s National Agricultural Technology Institute (INTA), the National Scientific and Technical Research Council (CONICET), and the National University of Mar del Plata.
In his presentation, Govaerts highlighted CIMMYT’s scientific efforts to improve the resilience of grain-based systems and produce sufficient, nutritious, and sustainable diets. He also shared CIMMYT’s determination to adopt a collaborative and future-proof approach to research, factoring in climate change to support effective decision-making processes for food producers and to meet demand for innovations and technologies.
Banner for the refresher webinar on fall armyworm management in South Asia. (Photo: CIMMYT)
The fall armyworm is a destructive polyphagous pest that feeds on more than 300 crop species, with a particular appetite for maize. The pest was first reported in Asia in 2018 and has been spreading in the region since then, especially in maize-producing countries of South Asia.
Several campaigns on identifying and managing fall armyworm have been conducted in South Asia, yet the challenge to control the pest remains. The damage caused by fall armyworm to farmers’ fields was reported widely during the 2022 spring maize season in Pakistan and Nepal’s Terai region. Many maize farmers complained about the current economic downturn, price hike of agricultural commodities and the unavailability of safe pesticides to reduce crop losses.
On 21 July 2022, the International Maize and Wheat Improvement Center (CIMMYT) initiated a refresher webinar to share the latest scientific advances and best practices for identifying and managing fall armyworm in South Asia. The platform extended an opportunity for the participants to understand and learn about effective integrated pest management (IPM) approaches being practiced in the region. It also addressed the importance of enabling policies that are crucial to foster innovations to reduce crop yield loss and save the environment from hazardous effects of toxic pesticides.
The Nepal Seed and Fertilizer Project (NSAF) team, supported by the United States Agency for International Development (USAID) and implemented by CIMMYT, organized the virtual event in collaboration with Nepal’s Plant Quarantine and Pesticide Management Center, the Nepal Agricultural Research Council, Nepal’s National Maize Research Program, the Maize and Millet Research Institute in Pakistan, the University of Agriculture Faisalabad and CGIAR’s Plant Health Initiative.
Govinda Prasad Sharma, Secretary of Nepal’s Ministry of Agriculture and Livestock Development and Jason Seuc, director of the Economic Growth Office at USAID Nepal, delivered their opening remarks during the inaugural session. The Secretary emphasized the use of safer methods, including but not limited to mass rearing and releasing of natural enemies of fall armyworm and the deployment of fall armyworm tolerant maize varieties.
“USAID will continue working with partners to advocate and promote IPM practices till the pest becomes of non-economic importance,” said Seuc.
BM Prasanna, director of CIMMYT’s Global Maize Program and OneCGIAR Plant Health Initiative lead emphasized the importance of IPM practices to manage the pest. Prasanna discussed the global efforts to control the pest and shared the progress of fall armyworm tolerant maize seeds which are being released and deployed by CIMMYT partners to help resource poor farmers, especially in Africa.
AbduRahman Beshir, NSAF’s seed systems lead, emphasized the importance of the event and acknowledged the participation of approximately 525 attendees from public and private research institutions, academicians, civil society, private sector, policy decision-makers, CGIAR centers and USAID Nepal. The webinar gathered attendees from 15 countries, including Nepal, India, Bangladesh, Pakistan, Thailand, Myanmar, Sri Lanka and China.
Experts from South Asia presented on a range of topics including the status of fall armyworm and its management in Nepal, Pakistan, Bangladesh and the Pacific Region, IPM practices and experience of using safe pesticides, breeding for native genetic resistance to fall armyworm, and biological control and push-pull strategies. The experts emphasized on the need for collective efforts to strengthen national and international coordination, favorable policies, deployment of fall armyworm tolerant maize varieties, and best response interventions to help farmers battle the fall armyworm and limit its spread.
Efforts to mitigate the impact of fall armyworm attacks are still ongoing. CIMMYT is continuously working to alert farmers and stakeholders on the IPM practices of fall armyworm in the region.
Govinda Prasad Sharma, Secretary of Nepal’s Ministry of Agriculture and Livestock Development hands-over diverse maize seed inbred lines acquired by CIMMYT to the National Agricultural Research Council. (Photo: Bandana Pradhan/CIMMYT)
Maize is Nepal’s second most important crop for food security. Although the country’s diverse ecology can support maize production throughout the year, maize seeds and other grains, are largely imported each year.
Access to quality maize seed is one of the issues. Almost 85% of Nepalese farmers are unable to access quality certified maize seeds leaving them vulnerable to lower productivity. Traditional seeds, for example, are often unable to withstand extreme weather conditions induced by climate change. Nepal also has low seed replacement rates — around 20% for major cereals, which means that over 80% of farmers are either recycling seeds or use substandard quality seeds for each cropping season.
Over the past four years, researchers from the International Maize and Wheat Improvement Center (CIMMYT), through Nepal Seed and Fertilizer (NSAF) project supported by the United States Agency for International Development (USAID), have been assisting the National Agricultural Research Council (NARC) and private seed company partners to test market ready and multiple stress tolerant hybrid and synthetic maize varieties at various locations across Nepal and evaluate their suitability for cultivation. These maize varieties have come from CIMMYT’s maize breeding hubs in Mexico, Zimbabwe, Colombia and India as well as the International Institute of Tropical Agriculture (IITA).
After over two years of testing and identifying the best performing varieties, Secretary of the Ministry of Agriculture and Livestock Development, Govinda Prasad Sharma handed over the seeds of selected maize varieties to NARC and seven partner seed companies for further testing, variety registration and seed scale up in Nepal. The handover ceremony took place on August 18, 2022 at the Quality Hybrid Seed Production and Seed Business Management International Training Workshop, which gathered together a diverse range of maize stakeholders from Nepal and South Asia.
These new high-performing, climate-resilient varieties will help Nepal increase their national maize yield, enhancing food security and livelihoods.
Govinda Prasad Sharma, Secretary of Nepal’s Ministry of Agriculture and Livestock Development hands over diverse maize seed inbred lines acquired by CIMMYT to one of the private seed company partners of the NSAF project. (Photo: Bandana Pradhan/CIMMYT)
Nutritious and climate resilient
The maize seeds include varieties enriched with provitamin A and zinc, aflatoxin tolerant synthetics, white and yellow kernel hybrids, and sweet and popcorn maize varieties. As well as being good for nutrition, the seeds are high yielding. Synthetic varieties have the potential to yield 6-7 metric tons (t) per hectare, while the hybrid varieties may yield over 10t — a significant increase from 3-5t of local seeds.
Climate change resilience is a vital trait for modern crops. Climate change is posing a threat to crops, with traditional varieties often unable to withstand extreme weather conditions. Included in the handover were climate resilient, early maturing seeds which take less than 100 days to mature in the summer season, reducing their exposure to drought. Among the handed over seeds were varieties tolerant to fall armyworm — a devastating pest threatening maize production in Nepal.
Stress tolerant and high yielding varieties suitable for such extreme conditions are needed now more than ever to increase on-farm yield levels. Nepal also needs a vibrant last mile seed delivery system and mechanisms to support and serve under-reached populations, including women and smallholder farmers. Sharma acknowledged CIMMYT’s support in sharing these elite and diverse maize seeds, which will contribute towards the government’s efforts of self-sufficiency in major cereals including maize.
“USAID is pleased to be collaborating with both the Government of Nepal and private sector partners through the NSAF project to enhance maize production and productivity at the farmer level,” said Jason Seuc, director of the Economic Growth Office at USAID.
“Once the range of maize seeds become widely available in the market, these varieties will play a major role in enhancing the food and nutrition security to millions of farmers who use maize directly or indirectly in the food chain, especially for those living in the hills.”
The exclusive allocation of the new products to partners complements the project team’s efforts to support private seed companies who have recently acquired research and development licenses and can subsequently register varieties under their own brands.
“We are handing over not only seeds and technologies to our partners but also responsibility, so that these varieties can make it to the farmers’ field in the shortest time possible,” said AbduRahman Beshir, NSAF’s seed systems lead at CIMMYT.
This crucial initiation also supports Nepal’s efforts to compete with imports and promote self-sufficiency through the private sector-led hybrid seed industry. Ultimately, farmers will have better access to quality maize seeds and increase crop productivity and income.
Nestlé and CIMMYT executives at CIMMYT HQ. (Photo: Francisco Alarcón/CIMMYT)
In the framework of National Maize Day, Nestlé Mexico, in collaboration with the International Maize and Wheat Improvement Center (CIMMYT), strengthens its commitment to support the development of farmers in Mexico, through the Plan Maíz initiative, which aligned with the goals of the Sustainable Development Goals (SDGs), seeks to boost productivity, increase and improve the practices of regenerative agriculture to positively impact food security, environmental impact and social inclusion of the Mexican fields.
In Mexico, maize is not only a staple food, but also a fundamental component of the gastronomic and cultural heritage and identity of Mexicans. For this reason, since 2017, Nestlé Mexico and CIMMYT signed a collaboration agreement to work together and contribute not only to improve the quality of life of farmers, but also to take care of the resources that produce one of the most important grains for our country, for the world and for the agrifood sector.
The event, Plan Maíz, commitment to regenerative agriculture and sustainability, was attended by Bram Goavaerts, director general of CIMMYT, and Julieta Loaiza, Vice President of Communication and Corporate Affairs of Nestlé Mexico, as well as representatives and managers of both institutions, in order to present progress and ratify the agreements for the future, with the aim of continuing to combine resources and actions for the development of agriculture in Mexico.
“At Nestlé we are committed to the sustainability and development of the Mexican fields. We have more than 90 years of work, commitment and experience in this beautiful country, so we will expand our support for the development and training of farmers to improve their production processes through regenerative agricultural practices for the care of natural resources and food security in Mexico,” said Loaiza.
Govaerts said, “At CIMMYT we are very committed to maize and wheat producers in Mexico, so this Nestlé-CIMMYT alliance allows us to multiply the impact to protect and conserve Mexico’s agricultural resources and strengthen the food security of Mexicans.”
The results of Plan Maíz obtained to date are significant: 400 farmers have benefited by adopting sustainable practices for the production of both maize and wheat, since they attended training and demonstration events that promoted a more sustainable commercial production model.
Thanks to the agreement’s training, the volume of maize and wheat produced grew to a cumulative total volume of more than 193,000 tons of maize and 21,690 tons of wheat. The project impacted more than 9,000 hectares of maize and wheat. In total, and during eight productive cycles, the accumulated number of hectares impacted amounted to more than 19,000, where there is a record of at least the adoption of sustainable practices such as: integral fertility, integral and responsible management of fertilizers and phytosanitary products, among others.
Nestlé has aimed to achieve zero net emissions in its operations by 2050. In this regard, it focuses its efforts on acting on climate change by supporting and expanding regenerative agriculture. This means refining and growing agricultural sustainability programs in key commodities.
To achieve this, they are intensifying their commitment to farmers so that the solutions they create for and with them achieve a positive and sustainable change both in their agricultural processes and in the main raw materials. Therefore, the goal is for 20% of maize and wheat from Plan Maíz to come from regenerative agriculture practices by 2025 and 50% by 2030, thus continuing to build on the commitment to develop the full power of food to improve the quality of life, today and for future generations.
About Grupo Nestlé Mexico:
Nestlé is the world’s largest food and beverage company. It is present in 187 countries around the world, and its 300,000 employees are committed to Nestlé’s purpose of improving the quality of life and contributing to a healthier future. Nestlé offers a broad portfolio of products and services for people and their pets throughout their lives. Its more than 2,000 brands range from global icons to local favorites. The company’s performance is driven by its nutrition, health and wellness strategy. Nestlé is headquartered in the Swiss city of Vevey, where it was founded more than 150 years ago. With 90 years of presence in Mexico, Nestlé is also the leading Nutrition, Health and Wellness company in the country, with the support of 32 global Research Centers, 17 factories in 7 states and 16 distribution centers, where 13,000 jobs are generated. Visit: www.nestle.com.mx
About the International Maize and Wheat Improvement Center (CIMMYT):
The International Maize and Wheat Improvement Center (CIMMYT) is an international organization focused on non-profit agricultural research and training that empowers farmers through science and innovation to nourish the world in the midst of a climate crisis. Applying high-quality science and strong partnerships, CIMMYT works to achieve a world with healthier and more prosperous people, free from global food crises and with more resilient agri-food systems. CIMMYT’s research brings enhanced productivity and better profits to farmers, mitigates the effects of the climate crisis, and reduces the environmental impact of agriculture.
CIMMYT is a member of CGIAR, a global research partnership for a food secure future dedicated to reducing poverty, enhancing food and nutrition security, and improving natural resources.
Climate change is an undoubted contributor to the global food crisis. Natural disasters and poor weather is leading to 193 million people facing acute food insecurity.
While food aid is vital, improving food systems and reducing reliance on food imports is the route to a long-term solution. In an article for the Des Moines Register, Cary Fowler, US government food security envoy, details the importance of developing reliable local production and well-functioning markets to support farmers.
The United States government’s Feed the Future initiative is addressing some of these challenges, such as by supporting the International Maize and Wheat Improvement Center (CIMMYT) to develop drought-tolerant maize, which is now planted on 17 million acres in Africa. This variety is making a significant difference to food security.
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 Ethiopia’s 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 NAC’s 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 IMAGE’s 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.
“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,” 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 farmers’ 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 Committee’s 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.
Hybrid seeds exhibit a significant potential to boost on-farm productivity and attain food security. Still, the availability, affordability and accessibility of such quality seeds remain a challenge for farmers in South Asia. Primarily driven by the demand from the poultry industry, maize productivity in the region is increasing annually. Yet, the hybrid maize seed coverage is below 50% in most South Asian countries.
In continuation of its capacity-building initiatives, the International Maize and Wheat Improvement Center (CIMMYT) conducted an International Training Workshop on Quality Hybrid Maize Seed Production and Seed Business Management in South Asia on August 15-18, 2022, in Kathmandu, Nepal. The four-day hybrid training was jointly organized by Nepal’s Seed Quality Control Center, Nepal Agricultural Research Council (NARC), Seed Entrepreneurs’ Association of Nepal and CGIAR’s Seed Equal Initiative. Primarily, the event aimed at strengthening the capacity of seed stakeholders on the latest advances in quality hybrid maize seed production and establishing competitive hybrid seed business strategies.
Around 60 participants comprising of private seed company owners, national and international seed system specialists, maize breeders, crop inspectors, seed agronomists, marketers, policymakers and researchers working in hybrid seed production and marketing attended the training. Representatives were invited from Nepal, India, Bangladesh and Pakistan.
Principal trainer, John MacRobert, shared examples and knowledge in the principles of hybrid maize seed production and seed business. Former principal scientist of CIMMYT, MacRobert is currently the managing director of Mukushi Seeds Pvt Ltd in Zimbabwe and director of Quality Seed Pvt Ltd in South Africa. The training also involved group discussions and exercises on preparing a seed road map as well as developing profitable seed business plans. The participants used a seed business model canvas tool to chart their production plans, develop marketing strategies and diagnose profit. In 2018, MacRobert trained 15 private seed companies from Nepal and Pakistan on hybrid seed business mentorship course in Kathmandu. Since then, the participants brought in and shared rich practical experiences from their own businesses and regulatory organizations during this year’s program.
Joining MacRobert were 14 national and international experts from CIMMYT and other institutions, who delivered sessions related to hybrid maize breeding principles and techniques, seed quality control measures and regulations, and variety registration and licensing policies and procedures.
The forum offered an excellent learning opportunity for the national and international participants to exchange knowledge and experiences from seed specialists on developing competitive hybrid maize and seed production technologies that will bring cost-efficiency in production and maximize crop yields and business profits. It also served as a ground for establishing networks and collaborations. The mutual learnings will contribute to building national and regional partnerships in the seed sector.
Participants reflected on the learnings and benefits gained from the comprehensive course, which they would apply to improve maize productivity in their respective countries.
Muhammad Aslam, assistant professor from the University of Agriculture Faisalabad in Pakistan, acknowledged the opportunity provided to him and his university. He mentioned the support of CIMMYT in Pakistan in strengthening the local maize seed industry, where the market share of local seed companies is gradually increasing due to the elite germplasm support and capacity development efforts by CIMMYT. He added that the practical knowledge gained from the training will enhance the university students’ skills.
Attendees at the International Training Workshop on Quality Hybrid Maize Seed Production and Seed Business Management in South Asia. (Credit: Bandana Pradhan/CIMMYT)
An ode to seeds
During the closing session of the training, Govinda Prasad Sharma, Secretary of the Ministry of Agriculture and Livestock, handed over diverse maize seeds to the NARC and seven private seed company partners of the Nepal Seed and Fertilizer (NSAF) project. CIMMYT acquired the elite maize parental lines and breeder seeds from its international maize breeding hubs in Mexico, Zimbabwe, Colombia and India. The seeds have the potential of yielding 6-7 metric tons per hectare for synthetics and more than 10 metric tons for hybrids–a significant increase from 3-5 metric tons of local seeds. More importantly, given the current climate challenges Nepali farmers are facing, these climate-resilient seeds reach maturity earlier than local varieties which reduces their exposure to drought. These seeds will also withstand Fall Armyworm infestations, a devastating pest threatening maize production in Nepal.
“Genetic materials that will not only enhance yield but diversify the gene pool of crops in Nepal is extremely important,” said Lynn Schneider, deputy director of the Economic Growth Office at United States Agency for International Development (USAID) Nepal. “Agriculture must combat climate change and malnutrition, which are critical for the South Asia region. So, I am really proud that we are working on these areas,” shared Schneider.
“Food security is a priority for the Government of Nepal,” explained Sharma. He mentioned maize as an essential commodity from the food and feed perspective for South Asia and plans to collaborate with the private sector and donor organizations to increase maize productivity in the country. “The event will definitely help in augmenting the activities and accelerate the pathway towards achieving food and feed security,” he added.
Moreover, a certificate of appreciation was presented to Nepal’s National Maize Research Program to recognize their effective collaboration in hybrid maize varietal promotion and source seed distribution. Similarly, three partner seed companies of the project were also recognized for the breakthrough in becoming the first recipients of the Government of Nepal’s research and development license to register and produce hybrid seeds on a commercial basis.
CIMMYT also launched an assessment report on Cereal Seeds Value Chain in Nepal that provides evidence-based recommendations for developing Nepal’s formal cereal seed sector, specifically maize and rice. The publication highlights the need for a well-performing seed system where high-quality seeds of a wide range of varieties and crops are produced and available in time and affordable to farmers.
Deepak Bhandari, executive director of NARC, also congratulated the authors and expressed the significance of formulating and implementing inclusive strategies to build a vibrant seed industry in Nepal. He also acknowledged the event organizers for conducting an exceptional international workshop on hybrid maize seeds for the public and private seed stakeholders.
Cover photo: Training attendees gather to discuss competitive hybrid maize seed production technologies and build relationships with seed systems professionals. (Credit: Bandana Pradhan/CIMMYT)
A multitude of research on the benefits of conservation agriculture in South Asia has predominantly focused on favorable environments where farmers have reliable access to energy supporting irrigation and inputs.
Farmers calibrate their machines for strip tillage in communities participating in experiments. (Credit: Ranik Martin)
Responding to the identified research gap, this research tests the hypothesis that seasonally alternating tillage (SAT) practices that alternate between strip-tillage in the winter season for maize and conventional tillage (CT) prior to rice can reduce energy use, increase energy productivity, and reduce yield-scaled emissions while increasing or maintaining yield and profit, even under these challenging conditions.
Working with 35 farmers who managed experiments in partially irrigated and rainfed environments in southern coastal Bangladesh, researchers teamed up with farming communities to compare the full suite of conservation agriculture to SAT practices against CT and farmer’s own practices.
The research found that in these coastal environments, both conservation agriculture and SAT practices have the potential to increase cereal yields and energy productivity while reducing yield-scaled emissions, thereby enabling farmers even in challenging coastal environments to produce more while reducing energy use and mitigating greenhouse gas emissions.
However, in consideration of farmers’ aversion to the elimination of tillage in rice, the research suggests that adaptations in CA practices and seasonal tillage prior to rice may be a more practical fit for rice-maize systems managed by smallholders reluctant to eliminate tillage for rice in coastal Bangladesh.
This research gives implications for future research and development efforts to take into consideration farmers’ preferences or the trade-offs resulting from significant change to conservation agriculture management in otherwise fully tilled systems. It is also vital to integrate development efforts that focus not only on agronomic management, but also on building supportive value chains to improve availability and affordability of the inputs and farm machinery required to successfully establish crops with such practices.
A recently published study in Nature Communications Biology journal demonstrates the potential of a novel seed production technology to transform Africa’s seed production system, conferring important benefits to smallholder maize farmers and seed companies in sub-Saharan Africa.
The Seed Production Technology for Africa (SPTA) process enables production of non-pollen-producing inbred seed that can be used in a two-step multiplication process to produce commercial seed of hybrid varieties containing equal parts pollen producing and non-pollen producing plants. The pollen producing plants provide pollen for the entire field, while the non-pollen producing plants deliver additional grain since they save energy by not producing pollen. Hybrids in which fifty percent of the plants are non-pollen producing have a significant grain yield advantage compared with hybrids in which all plants produce pollen.
Farmers and researchers evaluated the performance of fifty percent non-pollen producing (FNP) hybrids in side-by-side comparisons across diverse farm sites in Kenya, South Africa, and Zimbabwe between 2016 and 2019. The results demonstrate that FNP hybrids deliver an average yield increase of 200 kg per hectare, representing a 10-20% increase at current sub-Saharan Africa yield levels where farmers face frequent drought and sub-optimal soil fertility. The FNP yield advantage was consistent in both low yielding and higher yielding conditions. Additionally, in extensive farmer surveys, farmers rated the FNP hybrids higher than the pollen producing counterparts, recognizing the grain yield advantage. Favorable rating of FNP hybrids suggests that farmers are likely to adopt them once available.
Although consistent and steady improvement is being made for grain yield potential through plant breeding, the yield benefit of FNP hybrids is the equivalent of approximately six years of breeding progress under stressful conditions. The FNP trait provided a consistent yield advantage in several genetically unique hybrids evaluated, indicating that the yield advantage from FNP will be complementary to and additive with progress from maize breeding efforts.
In sub-Saharan Africa, the challenge of delivering genetically pure, high-quality seed is substantial. Seed companies in the region contend with a complex and costly system to produce commercial seed. In addition to delivering higher grain yield to farmers through the FNP trait, the SPTA process will reduce the complexity of seed production, enabling seed producers to deliver higher purity improved hybrid seeds in sufficient quantities for smallholder farmers.
Hybrid seed production requires that one of the parents of the hybrid is prevented from producing pollen, ensuring that the seed harvested has been cross-fertilized by the pollen parent. Most hybrid seed production in sub-Saharan Africa involves physical removal of the tassels of the seed parent prior to the release of pollen, a process known as detasseling. Detasseling is important in commercial seed production to prevent self-fertilization of the seed parent plants. Nearly all detasseling in sub-Saharan Africa is done by hand, which is a labor-intensive and time-sensitive process. Poorly executed or ill-timed detasseling results in unwanted self-fertilization of the seed parent, leading to rejection of seed and incurring losses to the seed producer. Furthermore, timely detasseling typically involves removal of one or more leaves together with the tassel, reducing the photosynthetic capacity of the plant, and lowering the seed yield.
Use of the SPTA process ensures that the seed parent of the hybrid will not produce pollen, thereby eliminating the need for detasseling. This means seed producers can ensure higher integrity of hybrid seed while reducing costs and increasing seed yield. The technology is well suited for the three-way hybrid production commonly used in sub-Saharan Africa. Economic advantages to seed companies of using seed from the SPTA process is also expected to provide incentive to replace older, lower yielding varieties with more recently developed hybrids. Providing improved quality seed of better hybrids while delivering the yield advantage of the FNP trait can benefit smallholder maize farmers throughout the region. Saving costs can help the seed sector remain strong and competitive, which leads to increasingly better options for farmers in the future.
The research was conducted by scientists from the Seed Production Technology for Africa project, a collaborative initiative of the Agricultural Research Council of South Africa (ARC), International Maize and Wheat Improvement Center (CIMMYT), CortevaTM Agriscience, Kenya Agricultural and Livestock Research Organization (KALRO), and QualiBasic Seed Company (QBS).
Cover photo: A woman with a baby on her back evaluating maize plants farmer’s plots hosting FNP trials in Embu, Kenya. Photo: Hugo DeGroote/CIMMYT
For a decade, scientists at the International Maize and Wheat Improvement Center (CIMMYT) have been at the forefront of a multidisciplinary and multi-institutional effort to contain and effectively manage maize lethal necrosis (MLN) disease in Africa.
The manual is relevant to stakeholders in countries where MLN is already present, and also aims to offer technical tips to “‘high-risk’ countries globally for proactive implementation of practices that can possibly prevent the incursion and spread of the disease,” writes B.M. Prasanna, director of CIMMYT’s Global Maize Program and MAIZE, in the foreword.
“While intensive multi-disciplinary and multi-institutional efforts over the past decade have helped in containing the spread and impact of MLN in sub-Saharan Africa, we cannot afford to be complacent. We need to continue our efforts to safeguard crops like maize from devastating diseases and insect-pests, and to protect the food security and livelihoods of millions of smallholders,” says Prasanna, who is presently leading the OneCGIAR Plant Health Initiative Design Team.
The demand for maize for poultry feed in Nepal has increased dramatically over the years. It constitutes about 60% of the poultry feed and is considered as the principal energy source used in poultry diets. About 70% of the total crop required by the feed industry is imported and such dependence on import could jeopardize its sustainability if any political, natural or health related crisis disrupts the supply chain. In addition to maize, the industry also imports synthetic amino acid to meet the requirements of poultry production since the regular maize grain used by the feed industry is deficient in essential amino acids that helps form proteins.
A recent assessment conducted by the International Maize and Wheat Improvement Center (CIMMYT) in Nepal highlights the prospects of using Quality Protein Maize (QPM) to mitigate protein deficiency found in regular maize. The authors suggest that the poultry feed industry can minimize the average feed cost by 1.5% by substituting regular maize with QPM. This would translate to a daily cost-saving of about US$26,000 for the industry. If this cost saving is shared across the value chain actors including farmers for domestic production of QPM and other biofortified maize vis a vis regular maize, then the dependency on imported maize can be significantly reduced.
The article published in the journal of International Food and Agribusiness Marketing, estimated least cost diet formulations for broilers and layers of different age groups, and the potential gains to be garnered by the maize seed and grain value chain actors in Nepal.
According to the study, a ton of feed produced using QPM reduces feed cost by at least US$7.1 for the broilers and by US$4.71 for layers. As a result, Nepal’s poultry feed industry can pay a maximum of 4% price premium with the cost saving for QPM.
“Considering the cost reduction potential QPM brings over regular maize, it can be a win-win situation for the poultry feed sector and maize value chain actors if they are strongly linked and operated in an integrated fashion,” explain the authors.
“By building awareness on the cost benefits, the feed industry exhibited a positive perception during the study period to use QPM for feed. Linking the seed companies with the feed mills is essential to leverage the benefits of the product.”
To promote and expand QPM production in Nepal, the authors also recommend provision of seed and fertilizer subsidies by the Government of Nepal to feed producers and cooperatives ensuring a continuous supply of the product to meet the demand.
The GoN has released two varieties of QPM maize but due to lack of effective seed production, extension and marketing programs, the potential of QPM maize remains unutilized. However, the authors firmly believe that appropriate policy focus on QPM seed production and grain marketing including premium price for QPM growers, can change the scenario where the demand for maize for feed industry can be gradually managed with domestic production.
The current focus in nutritional circles on micronutrient malnutrition and unhealthy eating habits has raised questions about continuing to invest in research on energy-rich cereal crops and related farming systems.
In this new paper in the International Journal of Agricultural Sustainability, development scientists make the case that cereal foods are an important vehicle for enhanced nutrition – with additional improvement possible through plant breeding and interventions in processing, manufacturing and distribution. It also explains cereals are a rich source of both dietary fiber and a range of bioactive food components that are essential for good health and well-being.
The authors suggest a balanced, integrated research approach to support the sustainable production of both nutrient-rich crops and the basic cereals used in humanity’s most widely consumed and popular foods.
In sub-Saharan Africa, smallholder production is characterized by low agricultural productivity which is often cited as a major factor of food insecurity in the region. Recent research from multiple countries in the region suggests that average maize yields of around 1.7 t/ha in 2010 must increase to 6.8 t/ha to meet estimated demand in 2050. To achieve this, per-hectare maize output must grow by about 3.5% per year. Although addressing this challenge seems daunting, estimates suggest that such high yields are technically feasible. However, a shared understanding of the investments and policies required remain elusive.
Under the Taking Maize Agronomy to Scale in Africa (TAMASA) project, scientists from Wageningen University and the International Maize and Wheat Improvement Center (CIMMYT) conducted research on this question, using uniquely detailed farm surveys which provide integrated information about smallholders’ agronomic practices and farm management, soil health and other biophysical characteristics, as well as socioeconomic and other characteristics of farm households.
Decomposing yield gaps
Yield gaps for rainfed crops are defined as the difference between the water-limited yield potential and the actual yield observed in farmers’ fields. One framework to explain yield gaps decomposes the yield gap into efficiency, resource and technology components (Figure 1).
The study disaggregated maize yield gaps in Ethiopia based on field level and farming systems information (Figure 2), which helps to consider the variation in biophysical and socio-economic conditions observed in the country.
Major drivers of yield (and yield gap) outcomes in Ethiopia
The study showed that income from non-farm sources, value of productive assets, education and shorter plot distance from home reduced the efficiency yield gap. The resource yield gap was attributed to sub-optimal input use, specifically of pesticide and nitrogen. The technology yield gap comprised the largest share of the total yield gap, mostly due to limited use of fertilizer and improved varieties and not using the right type and placement of fertilizers and of improved seeds
The investigation further showed that crop residue and weeding frequency affected maize yield only when nitrogen was applied. In a related study, the authors also showed that maize yield reponse to fertilizer application was dependent on other inputs, specifically type of maize variety, manure application and high rainfall implying the need to integrate agricultural technologies in order to improve and sustain the maize productivity. The authors conclude that targeted but integrated policy design and implementation is required to narrow the overall maize yield gap and improve food security.
“Disaggregating and explaining maize yield gaps is essential to identify potential pathways that can narrow the yield gaps,” said Banchayehu Assefa from CIMMYT. “This can help guide policy and investments to be more effective at raising smallholder productivity.”
How to improve fertilizer profitability
Modern maize varieties and mineral fertilizers use have been increasing over time and are believed to be among the factors behind the maize yield improvements observed in Ethiopia. However, maize yield response to fertilizer depends on other inputs and management factors and higher fertilizer application rates may not always lead to higher profitability. Using the details of management decisions and biophysical and marketing context, the authors estimated a maize yield response function and evaluated fertilizer yield responses and economic profitability of fertilizer investments by smallholder maize producers. They found that maize yield response to fertilizer was variable with an average value of 7.3 kg maize/ kg N, and it varied from -9 to 18 kg maize /kg. The degree of response was positively affected by phosphorus input and type of maize variety, and negatively by manure input and high rainfall. The key pathways identified to increase the profitability of nitrogen fertilizer use by smallholder maize producers are: improving yield responses with better management (e.g. use of improved maize varieties, complementary use of phosphorus where appropriate); addressing risk aversion (e.g. via crop insurance) in order to strengthen economic incentives for fertilizer investments; enabling the delay of crop sales to take advantage of higher output prices (possibly through expanded access to storage facilities and/or post-harvest loans to alleviate liquidity needs); and improving farm gate price ratios through improved access to markets.
Implications and further research
Even though maize yields have improved recently, under existing management practices smallholders’ maize yield still falls far below the water-limited potential yield. This urges revising the maize sector in terms of input provision, extension services and output markets. Fertilizer use was highly variable and maize response to fertilizer use depended on other management choices. The study suggests that integrated management practices that work for specific conditions need to be identified, instead of sticking to blanket policy and management recommendations.
This work further points at the importance of additional detailed empirical research on the role of agronomic management practices, to decrease yield gaps. Studying the constraining factors that hinder timely input provision to the farmers might also help to improve input use and hence productivity. In addition, maize prices are too low to advance maize commercialization. Investigating potentials and constraints along the maize value chain might help to improve market participation.
Cover photo: Harvesting maize in East Shoa, Oromia, Ethiopia. (Photo: Banchayehu Assefa/CIMMYT)
