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Bridging borders: A South-South exchange between Ethiopia and Nepal to tackle soil health challenges

Written by dmedina on . Posted in Blogs.

CIMMYT and Nepalese delegation and Debre Zeit Agricultural Research Center research team in the field (Photo: CIMMYT)

Soil health is fundamental to agricultural productivity, food security, and climate resilience. In Ethiopia and Nepal, deteriorating soil conditions—driven by acidity, nutrient depletion, and land degradation—pose a significant challenge to farmers and policymakers alike. Addressing these issues is not just a technical necessity but a pathway to ensuring long-term agricultural sustainability and economic stability.

Recognizing these shared challenges, CIMMYT facilitated a South-South exchange between Ethiopia and Nepal to foster collaboration, exchange knowledge, and explore innovative solutions for improving soil health.

Shared challenges, shared solutions

Both Ethiopia and Nepal face persistent soil health challenges that hinder agricultural productivity. In Ethiopia, soil degradation—stemming from issues like soil acidity, salinity, and nutrient depletion—has become a barrier to achieving higher agricultural productivity. Similarly, Nepal is navigating soil health concerns amidst small landholdings, urban migration, and climate impacts.

For both nations, sustainable soil management is critical to strengthening their agricultural sectors. This exchange provided an opportunity for researchers, policymakers, and agricultural experts to learn from each other’s experiences, leveraging successful approaches to improve soil quality and boost productivity.

CIMMYT and Nepalese delegation listening to explanations by Experts and technicians about the various activities taking place at the soil and plan analysis laboratory
(Photo: CIMMYT)

A unique exchange of knowledge

From November 25–28, a Nepalese delegation—including CIMMYT scientists and representatives from Nepal’s Ministry of Agriculture and Livestock Development (MoALD) and the Nepal Agricultural Research Council (NARC)—visited Ethiopia to gain insights into its soil health initiatives.

Ethiopia has made significant progress in soil management through collaborations between government agencies, research institutions, and international partners. With CIMMYT’s support, the country has developed a National Soil Information System (NSIS), a comprehensive data-driven approach that guides interventions to improve soil health, increase productivity, and enhance food security.

During the visit, the Nepalese delegation met with leading Ethiopian institutions, including:

  • The Ministry of Agriculture (MoA)
  • The Ethiopian Institute of Agricultural Research (EIAR)
  • The Agricultural Transformation Institute (ATI)
  • The Holeta Agricultural Research Center
  • The National Agricultural Biotechnology Research Center

Through site visits and discussions, the delegation explored Ethiopia’s Vertisol management strategies, sub-soil acidity solutions, and data-driven soil health policies—areas that could be adapted to Nepal’s agricultural landscape.

A shared commitment to agricultural innovation

Beyond knowledge exchange, the visit served as a catalyst for long-term collaboration between the two countries. CIMMYT has been working in Ethiopia for over three decades, supporting research and technology development to enhance soil health and food security. In Nepal, CIMMYT scientists collaborate with national partners to strengthen agricultural commercialization and climate resilience.

During their visit, Nepalese delegates expressed particular interest in Ethiopia’s Geo-Nutrition approach, which connects soil quality to human health by analyzing how soil nutrients influence the nutritional value of crops. Nepal sees great potential in adopting this model to enhance both agricultural and public health outcomes.

Shanta Karki, Joint Secretary at Nepal’s Ministry of Agriculture and Livestock Development (Photo: CIMMYT)

Shanta Karki, Joint Secretary at Nepal’s Ministry of Agriculture and Livestock Development, reflected on the visit: “The insights we gained in Ethiopia will be instrumental in improving our soil health strategies.

We see great potential for collaboration between Ethiopia and Nepal in tackling common challenges like soil acidity and water management.” She added that another key area of learning was Geo-Nutrition, an innovative field that connects soil health to human health.

The concept, which Ethiopia has been actively exploring, looks at how soil quality influences the nutritional value of crops and ultimately the health of the populations that depend on them. The Nepalese delegation saw this as an opportunity to further develop their own approach to improving soil and human health simultaneously.

Looking Ahead: Building stronger partnerships

Shanta Karki, Joint Secretary at the Ministry of Agriculture and Livestock Development (MoA), presents a token of appreciation to Dr. Samuel Gameda, Senior Soil Scientist at CIMMYT-Ethiopia, in recognition of his efforts to strengthen partnerships between Nepal and Ethiopia in the framework of improving soil health (Photo: Desalegne Tadesse/CIMMYT)

As CIMMYT continues to facilitate South-South exchanges, the goal is to adapt successful models from Ethiopia to Nepal while drawing lessons from Nepal’s unique agricultural landscape. The delegation left Ethiopia with renewed motivation to enhance soil health, not just for the benefit of farmers but for broader food security and economic resilience.

Narayan Prasad Khanal, Business Development Manager at CIMMYT Nepal, emphasized the importance of such exchanges. “The lessons learned here, particularly on sub-soil acidity management and Geo-Nutrition, will be crucial for enhancing our regulatory systems and addressing challenges in Nepal’s agriculture. This experience has shown us how important it is to adapt successful models from other countries and incorporate them into our own agricultural practices.

Dr. Shree Prasad Vista, Senior Scientist at the Nepal Agricultural Research Council (NARC), shares his reflections and lessons learned during the experience-sharing visit (Photo: Desalegne Tadesse/CIMMYT)

Shree Prasad Vista, Senior Scientist at the Nepal Agricultural Research Council (NARC), was particularly fascinated by Ethiopia’s innovative work on Vertisol management and soil acidity. He remarked, “The insights we gained from CIMMYT, particularly on Geo-Nutrition and soil acidity, will help enhance our agricultural practices and regulatory systems in Nepal.”

A Path toward collaborative solutions

As Ethiopia and Nepal continue to navigate similar agricultural challenges, the knowledge gained from this exchange will play a crucial role in shaping future soil health strategies. By learning from each other’s successes, both countries are positioning themselves to implement sustainable, climate-resilient soil management practices tailored to their unique context.

This exchange stands as a powerful example of how international collaboration fosters innovation, resilience, and food security. Through shared expertise and collective action, Ethiopia and Nepal are laying the foundation for stronger agricultural systems that will benefit future generations.

Sowing a Seed of Hope: Transforming Lives through Mixed Farming in Nepal

Written by dmedina on . Posted in Blogs.

Birma Sunar Tending (Photo: Lokendra Chalise/CIMMYT)

In Nepal, hope is slowly taking root in the mid-hills as communities and farmers transform traditional systems into productive, diversified, nutritious and market-oriented farming systems. Through the CGIAR Mixed Farming Systems (MFS) Initiative, farmers like Ms. Birma Sunar and communities like Gurbhakot in Surkhet are building a transformative pathway. Since 2022, CIMMYT and IWMI have been supporting communities in planning and engaging stakeholders in identifying organizational and technical solutions. The initiative aims to increase milk production through improved forages, improve nutrition and income diversification through high-value fruit trees, and improve water efficiency in vegetable production through micro-irrigation.   

Birma’s Journey: Overcoming Challenges, Cultivating Dreams

Birma Sunar, 49, a determined farmer from Surkhet, represents the aspirations of countless smallholder farmers struggling to survive on limited means. A Dalit woman and an amputee, her small plot of land was once dedicated to subsistence farming, leaving her family struggling to make ends meet. The maize and wheat she grew barely lasted a year, and her family of seven was struggling for food. With her husband earning meager wages as a day laborer, the family often faced food insecurity.  

Her perspective on farming began to change when she became involved with the Mixed Farming Initiative. Birma received training in the cultivation of high-value fruit trees and the planting of Napier grass to feed dairy cattle, as well as micro-irrigation techniques. With her new skills and the eight mango saplings and one lychee tree she received from the Initiative as part of  action research, she hopes to increase her family’s income..   

“I was unaware of commercial farming,” says Birma. “I have a lime tree and a banana tree in my field however, it used to be for home consumption. But now, once my mango and lychee trees start giving fruits, I hope to sell the produce in local markets and earn enough to buy essential household items and feed my family.”  

Last year, she planted high-value fruit saplings that are now growing into healthy plants, giving her hope for stability and food security in the future.   

Birma Sunar intercultivating a mango plant (Photo: Lokendra Chalise/CIMMYT)
Youthful Aspirations: Santosh’s Agricultural Renaissance

After working abroad for a few years in the hope of a brighter future, Santosh KC, 25, returned home, disheartened yet determined. Equipped with the knowledge gained from his agricultural education and a passion for change, he started a nursery for high value fruit trees and improved forages and ventured into dairy farming with Napier grass.  

The journey was not easy. In the first year, Santosh faced losses, and his family doubted the viability of his efforts. But with unwavering dedication, he turned his fortunes around. Today, Santosh cultivates 45 ropanis (2.29 hectares) of land, raises 22 goats, and earns a steady income. He also participates in the Mixed Farming Initiative training organized jointly with the Gurbhakot municipality and mentors farmers on the benefits of mixed farming.   

“For many youths, farming doesn’t seem like a viable option. However, with support for modern agricultural techniques and market integration, we can build livelihoods that are not just sustainable but rewarding,” shares Santosh.  

A Municipal Vision: Building Resilient Communities

The Initiative has been jointly implemented by CIMMYT and IWMI in the local municipality of the working district. With the support of the initiative, the Gurbhakot municipality is playing a critical role in scaling up the benefits of mixed farming. Recognizing the value of the crops, the municipality has embraced Napier grass and high-value fruits as key components of its agricultural strategy. By prioritizing mangoes, lychees, oranges, and lemons, the municipality aims to improve household nutrition and create commercial opportunities for farmers.  

“We distributed high-value fruit trees to farmers last year under the theme ‘One Home, Two Fruit Plants’. This year, we’re planning a study to identify the best topography for different fruits. This knowledge will allow us to scale our goal to integrate these practices into larger public programs, creating decent livelihoods for farmers,” said Mr. Hasta Pun, Mayor of Gurbhakot Municipality.   

Mayor Hasta Pun (Photo: Lokendra Chalise/CIMMYT)
A Vision for the Future  

The Mixed Farming Initiative has been critical in identifying solutions to bring tangible improvements to smallholder farmers like Birma and Santosh, but it has also strengthened local governance and resilience. In the three years of implementation, the pilot program in Gurbhakot in Surkhet and Halesi-Tuwachung in Khotang has set the stage for scaling up these efforts in more municipalities. By 2030, the initiative aims to impact 13 million people and ensure equitable opportunities for women, youth, and marginalized communities.  

By nurturing the saplings of high-value fruits and integrating forages, local leaders and farmers in the mid-hills of Nepal remain motivated and committed to rewriting their story —One of hope, resilience, and the promise of a food-secure future.   

Sustaining Health and Soil: Sundhani Tharu’s 4Rs Approach to Farming

Written by dmedina on . Posted in Features.

Sundhani Tharu, a 44-year-old farmer from Pattharbojhi, Madhuwan-1 in the Bardiya district, in the mid-west of Kathmandu, is a leading example of how sustainable agricultural practices not only enhance crop production but also contribute to human and environmental health. Her dedication to a balanced approach to farming, which includes crop-livestock integration and the principles of the 4Rs of nutrient stewardship, has had a significant impact on her farm and the wider community.

Sundhani lives in a joint family of 58 members, with farming as the primary source of income. On their 8.13 hectares of land, they grow staple crops like rice, maize, mustard, and lentils, while also raising 26 cows, 17 buffaloes, and 45 sheep. Through this integration of crop production and livestock, Sundhani has built a closed-loop farming system where farmyard manure (FYM) from the livestock nourishes the crops, and crop residues feed the animals, ensuring minimal waste and promoting a natural balance between animals, crops, and soil health.

Sundhani with her family (Photo: Sirish Shrestha)

Central to her success is her application of the 4Rs of nutrient stewardship, which involves applying the right source of nutrients at the right rate, at the right time, and in the right place. This approach ensures that her crops receive the essential nutrients they need while minimizing environmental impact. With support from the USAID-supported Nepal Seed and Fertilizer (NSAF) Project, implemented by CIMMYT, Sundhani has been trained in nutrient management techniques, including the 4R principles. These practices have helped her optimize fertilizer use and significantly improve her crop yields, doubling her maize production from 30 to 60 quintals per hectare.

Sundhani also prioritizes the use of farmyard manure, which plays a vital role in her farming system. The manure from her livestock is carefully composted and used as a natural fertilizer, enriching the soil with organic matter and nutrients. This reduces her reliance on synthetic fertilizers, which can harm the environment and deplete soil health over time. By using farmyard manure, Sundhani is not only improving soil fertility but also promoting a healthier ecosystem for future generations.

Similarly, the importance of a healthy diet is another key focus of Sundhani’s farming journey. Her farm provides her family with a diverse range of crops, including rice, maize, mustard, and vegetables like cauliflower, tomatoes, and potatoes. These crops contribute to a balanced, nutrient-rich diet for her large family, ensuring that they receive essential nutrients from fresh, organic produce. Sundhani’s vegetable farming is further enhanced through climate-smart practices like intercropping and mulching, which protect the soil, conserve water, and increase the variety of crops she can grow.

In addition to her focus on nutrient management and healthy diets, Sundhani has embraced Integrated Soil Fertility Management (ISFM), a holistic approach to soil health. ISFM combines organic and inorganic fertilizers, along with improved crop varieties and efficient nutrient management techniques, to enhance soil fertility and ensure long-term agricultural productivity. Through ISFM, Sundhani has achieved sustainable growth in her farming operations while safeguarding the environment for future generations.

Sundhani Tharu (Photo: Sirish Shrestha)

Though Sundhani can hardly read or write, she is contributing to the “One Health” movement—a global initiative that connects the health of people, animals, and the environment through best management practices in agriculture. By integrating crops and livestock, using farmyard manure, and applying the 4Rs of nutrient stewardship, she promotes a sustainable, eco-friendly system that enhances food security, improves soil health, and protects natural resources.

Looking ahead, Sundhani is determined to expand her farming ventures. She plans to venture into seed production for rice and mustard and hopes to increase her earnings from NPR 5 lakh (USD 3,740) to NPR 8 lakh (USD 5,987). By continuing to inspire her community and advocate for local vegetable markets, Sundhani envisions a future where farming is not only a source of livelihood but a cornerstone for a healthy, thriving ecosystem.

Sundhani Tharu’s story highlights the power of nutrient stewardship and sustainable farming to create healthier soils, crops, and communities. Through her dedication to the 4Rs, ISFM, and promoting farmyard manure use, she is paving the way for a future where agriculture is in harmony with nature—benefiting both people and the planet.

Sundhani’s father-in-law (Photo: Sirish Shrestha)

Agro fair in Kailali rejuvenates farmers

Written by dmedina on . Posted in In the media.

In May, CIMMYT, in collaboration with the local government, organized an Agriculture Fair in Janaki Rural Municipality, Kailali district, Nepal, introducing farmers to modern farming techniques and machinery. The event inspired farmers like Ramfal Badayak, chairman of Biz Briddhi Krishak Cooperative, to adopt advanced tools, leading his cooperative to purchase two plant cultivators that now save time and labor for all members. With over 40 stalls and more than 4,000 daily visitors, the fair also benefited local suppliers by enabling direct sales to farmers, reducing costs by eliminating middlemen. This transformative event exemplified the potential of such platforms to modernize agriculture and support local communities.

Read the full story.

Positioning Nepal as a future seed production hub in South Asia

Written by dmedina on . Posted in Blogs.

MoU signing event between Nepal and Bangladesh seed companies (Photo: Sirish Shrestha/CIMMYT)

In August 2024, four Nepalese seed companies and six international seed companies from India, Bangladesh, Japan and Thailand signed a memorandum of understanding (MoU) for custom seed production of cereals and vegetables in Nepal, opening up game-changing economic opportunities in South Asia. This agreement will allow international seed companies to produce seed in a suitable agroecology in Nepal and export to international markets. To support this, the Government of Nepal has agreed to exempt variety registration for export-oriented custom seed production and expedite the process with added incentives to attract more international seed companies. This move aims to position Nepal as a future regional seed production hub. 

The signing of the MoU was the pinnacle of an international seed conference organized by CIMMYT in collaboration with Seed Quality Control Center (SQCC), the Nepal Agricultural Research Council (NARC), and Seed Entrepreneurs Association of Nepal (SEAN) in Kathmandu from August 22-24, 2024, focusing on innovation, partnership, and policy.  

The conference attracted over 150 participants from 11 countries, including Bangladesh, Ethiopia, India, Japan, Kenya, Nepal, Pakistan, Singapore, Switzerland, Thailand, and the USA, representing research centers, civil society organizations, private seed companies, and national agricultural research systems (NARS). The event was organized under the USAID’s Nepal Seed and Fertilizer (NSAF) project which aims to foster Nepal’s seed market systems through the enhancement of stakeholders’ capacity in seed research, quality seed production, as well as the creation of an enabling environment that links seed companies with input and output markets. 

Enhancing seed market systems in South Asia  

The MoU is expected to enhance the seed market system in the region, create new economic opportunities for Nepal, boost agricultural exports, and generate income for farmers. It will also facilitate the transfer of advanced seed technology and foster stronger partnerships between seed companies in the region and beyond. Mr. M Anis Ud Dowla, Board Chairman of Advanced Chemical Industries (ACI) Limited, one of the largest business conglomerates in Bangladesh, expressed optimism about the partnership, citing Nepal’s favorable conditions for producing seeds of cool-season crops and the potential benefits for farmers in Nepal and Bangladesh.  

In addition, ACI signed MoUs with Gorkha Seed Company and SEAN Seed Service Center, for the production of cereals and vegetable seeds, demonstrating growing confidence in Nepal’s seed sector where CIMMYT and its partners played a key role to enhance the capacity of the seed stakeholders for the past several years. “About 10 or 12 years ago, I had the opportunity to interact with the seed stakeholders in Nepal and at that time the seed sector was not viable, and the role of the private sector was insignificant. Now, I am impressed to see such seed sector transformation initiatives in Nepal,” says Manesh Patel, President of Asia and Pacific Seed Association (APSA) while acknowledging the effort made by CIMMYT and other seed stakeholders. He added that “it is time for Nepalese private seed companies to become a member of APSA to leverage regional opportunities.” 

Untapped potential 

Nepal’s diverse agroecology, encompassing tropical, subtropical, and temperate environments, provides an ideal condition for seed production of cereals, fruits, and vegetables. However, this potential remains largely untapped due to limitations within the country’s formal seed sector. The informal system dominates, leaving farmers with insufficient access to quality seeds. In 2023, the formal sector only met 25% of the total 180,000 metric ton requirement for cereal seeds. Consequently, Nepal heavily relies on imported seeds, particularly hybrid varieties of rice and maize, costing nearly half a billion dollars annually when accounting for both cereal seeds and grain imports. 

Several factors hinder the development of Nepal’s seed sector: limited availability of high-yielding varieties that are tolerant to major biotic and abiotic stresses; a lack of farmer awareness regarding quality certified seeds and modern technologies; inadequate infrastructure for improved storage and road access; vulnerability to climate change impacts; insufficient incentives for private sector investment; and limited human and institutional capacity across the seed value chain. 

To tackle these challenges and seize opportunities, the Government of Nepal has outlined key interventions through the National Seed Policy, National Seed Vision, and Agricultural Development Strategy (ADS). These policies aim to create seed roadmaps and foster an enabling environment to attract private sector participation. Recently, the government of Nepal approved the issuance of research and development licenses to private seed companies, allowing them to develop and deploy new seed varieties. Collaborative efforts by the Nepal Agricultural Research Council (NARC), Seed Quality Control Center (SQCC), and CIMMYT under the USAID-supported Nepal Seed and Fertilizer (NSAF) project are also leading to local seed companies producing hybrid seeds for rice, maize, and vegetables across various districts. However, this is at budding stage, and it needs to be scaled up further. 

The nexus of seed security and resilient agrifood systems  

The interplay between seed security and resilient agrifood systems is crucial for enhancing food security, particularly amidst climate change and global challenges. This relationship underscores the importance of robust seed systems that can adapt to various stresses while ensuring sustainable food production. “Seed systems are complex networks involving farmers, seed companies, service providers, and authorities, all working together to ensure high-yielding and resilient seeds reach farmers’ fields as quickly as possible,” said Bram Govaerts, Director General of CIMMYT, while addressing conference participants. He further emphasized that demand-oriented and effective seed systems help to harness the benefits of crop improvement.  

The conference brought together prominent figures from South Asia and beyond, who shared their insights. “A well-functioning seed system guarantees seed security for all farmers,” noted BM Prasanna, Director of the Global Maize Program at CIMMYT, during his keynote address. He highlighted the critical nexus between seed security and resilient agrifood systems, emphasizing the need for technical, organizational, and institutional innovations. Prasanna also called for continuous public-private-producer collaboration to develop and strengthen seed systems in the global south.  

Linking global and regional seed industry practices to fit into local conditions  

The Hon. Minister of Agriculture and Livestock Development of Nepal, Ram Nath Adhikari, inaugurated the conference, welcoming delegates and emphasizing the event’s significance to Nepal’s agricultural sector. Benu Prasad Prasai, Chief of SQCC, shared emerging trends in Nepal’s seed industry, highlighting efforts to engage the private sector and reduce seed import dependency. “We need to harmonize and link seed policies across South Asia and beyond to fully capture the benefits of plant breeding gains,” said Prasai, while emphasizing Nepal’s potential for seed business and investment. Dyutiman Choudhary, NSAF project lead, echoed these sentiments, emphasizing the importance of international and regional partnerships in developing a vibrant seed market. He highlighted the need for enabling seed policies and regulations that facilitate market system development.  

The discussions resulted in high-level recommendations to further augment Nepal’s seed sector: strengthening public-private partnerships in research and development to transform Nepal’s seed industry into a viable, resilient, and sustainable seed system; collaboration with foreign counterparts for joint research and technology exchange is vital to strengthening Nepal’s seed R&D and promoting custom seed production; legal frameworks must be developed and executed to create an enabling environment that strengthens public and private sector seed R&D efforts. 

Panel discussion on creating an enabling environment for private sector engagement in seed and varietal R&D (Photo: Sirish Shrestha/CIMMYT)
Official opening session of the International Seed Conference in Nepal (Photo: Deepa Woli/CIMMYT).

Harnessing the benefits of commercial agriculture

Written by dmedina on . Posted in Blogs.

Rajendra in the maize field (Photo: Deepa Woli, CIMMYT)

Rajendra Kathariya, a 41-year-old resident of Joshipur-2 in Kailali district, far-west of Kathmandu, has transformed his life and that of his family of five through commercial agriculture. Despite many challenges, Rajendra has remained committed to achieving financial sustainability through enhanced farming practices. Over the last two years, his partnership with Nepal Seed and Fertilizer (NSAF) and CIMMYT, in collaboration with Nisrau Multipurpose Cooperative, a partner cooperative of NSAF, has been instrumental in his success. 

Moving from traditional to modern farming

Previously, Rajendra cultivated cereal crops using traditional methods which often led to food crises for his family. However, he has now shifted to cultivating various crops throughout the year using modern farming techniques on his 1.02 ha of land and an additional 2.71 ha which he has leased. 

“Before NSAF’s support, we only cultivated two crops per year. Now we harvest three crops and are considering commercial maize production,” Rajendra said. 

Remarkable achievements in crop production

Last year, Rajendra cultivated rice on 3.72 ha, yielding 8.8 metric tons (t) worth NPR 250,000 (US $1,880.71). Similarly, he sold 3.8t of spring maize from 1.35 ha, earning NPR 110,000 (US $827.51). This year, he expanded maize cultivation to 2.03 ha, with an expected income of NPR 200,000 (US $1,504.57). His potato crop yielded 5.5t worth NPR 125,000 (US $940.35), with an additional 5.5t stored for future sale. 

In addition to crops, Rajendra has established a pig farm, earning NPR 400,000 (US $3,009.13) in 2023 from selling pigs. He received a feed-making machine for pigs from NSAF, under its support to agribusiness Micro, Small and Medium Enterprises (MSMEs).  

Embracing modern technology and techniques

Rajendra uses both organic and chemical fertilizers and follows improved farming techniques such as hybrid seeds, line sowing, and machinery use. He owns a mini tiller and rents other machinery as needed. This year, with support from NSAF, he used a drone to spray fertilizer on his spring maize, significantly reducing labor and time. 

“I have viewed videos of drones spraying fertilizer but never imagined it happening on my spring maize land. As a demonstration, 0.57 ha was used for nano urea spraying. The task was completed within five minutes of the drone taking flight. Similarly, I was astonished to learn that a drone can cover 2.02 ha in a mere 20 minutes,” he shared. 

Intercropping and future plans

Rajendra has also implemented intercropping, combining maize with legumes on a 0.10-hectare plot. “Spring maize-legume intercropping is productive and effective for farmers such as me. We can make a profit from legumes, as well as spring maize. I will continue using this practice in the future,” he said. 

Financial investments and community impact

The profits from agriculture have helped Rajendra to manage his household comfortably. He can now provide education for his four children, manage household expenses, and also pay the loan that he had taken for his household expenses. In addition, he recently invested NPR 250,000 (US $1,880.71) to build a new pig shed. He also sells his produce in local markets at Joshipur, Kailali.  

“I have travelled a long way from being a subsistence farmer to engaging in commercial farming. This shift from traditional to improved farming technologies has been made possible with the support of NSAF/CIMMYT. I am grateful for their assistance and encouragement,” Rajendra said. 

Vision for sustainability

Rajendra’s story reflects his dedication and hard work. “I was working as a daily wage laborer in India, hoping to secure a promising future for my children. Today, I can achieve complete sustainability through agriculture and provide quality education and a better life for my children,” he shared. 

Drone on maize field (Photo: by Shishir Sapkota, CIMMYT)

Driving innovation through digital agriculture: Digital Ag Nepal, 2024

Written by dmedina on . Posted in News.

Stakeholder collaboration to create a coherent digital agriculture framework, an ecosystem to promote digital agriculture, and local government participation emerged as top recommendations to bridge the gap between technology and agriculture during the International Digital Agriculture Forum, Nepal 2024, held in Kathmandu, Nepal.  

The event themed “Innovate, Cultivate, Thrive: Advancing Agriculture with Digital Solutions” brought together global and local stakeholders to explore the transformative potential of digital solutions in Nepal’s agricultural sector.  

The focus on addressing the digital divide in Nepal’s agricultural sector by sharing emerging technologies and innovations, generating research ideas to provide inputs to the upcoming digital agriculture strategy of Nepal National Digital Agriculture Strategy and Action Plan for Nepal, and promoting an inclusive and sustainable transformation in the agriculture and food systems of Nepal. 

Over the course of two days, the event attracted 135 participants, including 11 international experts and 29 national experts and representatives. It was organized by the Nepal Seed and Fertilizer Project (NSAF) and implemented by CIMMYT, with support from the United States Agency for Agriculture Development (USAID) in partnership with Pathway Technologies & Services Pvt Ltd, Seed Innovation Pvt Ltd, and Kathmandu Living Labs Pvt Ltd.

Key highlights from the event  

The forum included keynote presentations, success stories of ICT business practices, and panel discussions with global subject experts, industry leaders, government agencies and local agritech companies. The event also comprised breakout groups for in-depth discussions, and formal and informal networking opportunities. 

In his welcome address, Country Representative for Nepal and Coordinator of NSAF Dyutiman Choudhary highlighted the impact of digital agriculture on Nepalese farmers through the NSAF project. He shared how, in partnership with GeoKrishi and PlantSat, farmers now stay more informed on various issues through mobile app, SMS, IVR, farmer advisory services, and crop insurance.  

The opening session was chaired by Dr. Deepak Kumar Kharal, secretary, agriculture  development, Ministry of Agriculture and Livestock Development (MoALD). Keynote speeches included a global perspective on digital agriculture by Prof. Athula Ginige from Western Sydney University, and national perspective by Ms. Shabnam Shivakoti, joint secretary MoALD.  

Prof. Ginige presented on “Cultivating Innovation: Transforming Challenges into a Sustainable Digital Agrifood Future.” He highlighted the plight of 719 million smallholder farmers living below the poverty line and stressed the need to use digital opportunities such as IoT, AI, and big data to address challenges of food waste and climate change. He shared his experience in developing mobile platforms to improve the lives of smallholder farmers.  

In her keynote address Shivakoti set the context of Nepal’s digital agriculture and the initiatives undertaken by the government. She highlighted how digital innovations such as virtual agriculture commodity market E-hatbazar, programs such as digital land record maintenance, remote sensing data, and digital apps like GeoKrishi are driving growth in Nepal’s agricultural sector. She also shared details about the draft National Digital Agriculture Strategy.  

Judith Almodovar, acting director of the Economic Growth Office at USAID-Nepal, emphasized the importance of digital tools in enhancing productivity, efficiency and sustainability. She highlighted USAID’s investment through NSAF in digital innovations, such as seed and soil fertility management using digital tools.  

“By leveraging advanced technologies such as the Internet of Things (IoT), big data analytics, and remote sensing, we can provide real-time insights, improve supply chain management, and increase farmers’ resilience to climate shocks,” she said.  

The forum featured three technical sessions: innovations in digital agriculture; digital agriculture in action—policies and practices and; rapid fire presentations by seven Nepalese digital ag companies. Additionally, six local digital start-up companies displayed their products.  

The closing session was chaired by Dr. Narahari Prasad Ghimire, director general of the Department of Agriculture, while Dr. Rajendra Prasad Mishra, secretary of Livestock Development, was invited as chief guest. 

Recommendations from the forum  

The discussions and deliberations led to a series of recommendations primary among which were the importance of stakeholder collaboration to create a cohesive digital agriculture framework and developing partnerships and ecosystems to support digital agriculture, including data governance and personalized advisory services for farmers. Participants also emphasized that local governments must be encouraged to lead agricultural digitization initiatives, including staff training and adopting IoT-based intelligent irrigation systems, sensor-based drip irrigation, and drone technology for monitoring crops and livestock. Digital input certification and QR-based agri-input verification (seed, breed, saplings, and fertilizer) tracking systems to enhance trust and transparency emerged as a critical factor. Participants agreed that it was necessary to design technical information, including emergency agricultural alerts, in various formats (text, video, audio) to accommodate farmers with lower levels of literacy.  

Watch event video here. 

Heat tolerant maize: a solution for climate change-induced 360◩ water deficits

Written by Julian Bañuelos-Uribe on . Posted in Blogs.

Seed company partners observe the performance of heat-tolerant hybrids in the dry heat of southern Karnataka, India. (Photo: CIMMYT)

Millions of smallholders in the Global South depend on maize, largely cultivated under rainfed conditions, for their own food security and livelihoods. Climate change mediated weather extremes, such as heat waves and frequent droughts, pose a major challenge to agricultural production, especially for rainfed crops like maize in the tropics.

“With both effects coming together under heat stress conditions, plants are surrounded, with no relief from the soil or the air,” said Pervez H. Zaidi, maize physiologist with CIMMYT’s Global Maize Program in Asia. “Climate change induced drought and heat stress results in a double-sided water deficit: supply-side drought due to depleted moisture in soils, and demand-side drought with decreased moisture in the surface air. “

Extreme weather events

Weather extremes have emerged as the major factor contributing to low productivity of the rainfed system in lowland tropics. South Asia is already experiencing soaring high temperatures (≄40◩C), at least 5◩C above the threshold limit for tropical maize and increased frequency of drought stress.

A woman agricultural officer discusses the performance of heat tolerant hybrids at farmers’ field in Raichur districts of Karnataka, India. (Photo: CIMMYT)

“In today’s warmer and drier climate, unless farmers have copious amounts of water (which might not be a sustainable choice for smallholders in the tropics) to not only meet the increased transpiration needs of the plants but also for increased evaporation to maintain necessary levels of humidity in the air, the climate change mediated weather extremes, such as heat and drought pose a major challenge to agricultural production, especially for rainfed crops like maize in lowland tropics,” said Zaidi.

To deal with emerging trends of unpredictable weather patterns with an increased number of warmer and drier days, new maize cultivars must combine high yield potential with tolerance to heat stress.

Maize designed to thrive in extreme weather conditions

CIMMYT’s Global Maize Program in South Asia, in partnership with public sector maize research institutes and private sector seed companies in the region, is implementing an intensive initiative for developing and deploying heat tolerant maize that combines high yield potential with resilience to heat and drought.

By integrating novel breeding and precision phenotyping tools and methods, new maize germplasm with enhanced levels of heat stress tolerance is being developed for lowland tropics. Over a decade of concerted efforts have resulted in over 50 elite heat stress tolerant, CIMMYT-derived maize hybrids licensed to public and private sector partners for varietal release, improved seed deployment, and scale-up.

Popular normal hybrids (left) & CAH153, a heat tolerant hybrid (right) under heat stress. (Photo: CIMMYT)

As of 2023, a total of 22 such high-yielding climate-adaptive maize (CAM) hybrids have been released by partners throughout South Asia. Through public-private partnerships, eight hybrids are being already deployed and scaled-up to over 100,000 hectares in Bangladesh, Bhutan, India, Nepal, and Pakistan. Also, the heat tolerant lines developed by CIMMYT in Asia were used by maize programs in sub-Saharan Africa for developing heat tolerant maize hybrids by crossing these as trait donors with their elite maize lines.

Studies on the new CAM hybrids show that while their yield is like existing normal maize hybrids under favorable conditions, the CAM hybrids outperform normal hybrids significantly under unfavorable weather conditions.

“The unique selling point of the new CAM hybrids is that they guarantee a minimum yield of at least 1.0 tons per hectare to smallholder farmers under unfavorable weather when most of the existing normal hybrids end-up with very poor yield,” said Subhas Raj Upadhyay, from the Lumbini Seed Company Ltd. in Nepal.

Given the superior performance of CAM seeds in stress conditions, Nepali farmers have expressed willingness to pay a premium price: an average of 71% more with government subsidy, or at least 19% extra without a subsidy for CAM seed. Similarly, the farmers in hot-dry areas of the Karnataka state of India are ready to pay 37% premium price for CAM seed compared to normal hybrid seed. These reports strongly validate the demand of CAM seed and therefore a targeted initiative is needed to accelerate deployment and scaling these seeds in climate-vulnerable marginal agroecologies in tropics.

Strengthening maize value chains in Nepal

Written by Julian Bañuelos-Uribe on . Posted in News.

Stakeholders collaborate in a two-day workshop to discuss the inclusive development of maize value chains in Nepal. (Photo: CIMMYT)

From April 3-4, 2024, CIMMYT hosted the International Conference on Strengthening Maize Value Chains in Nepal, organized in collaboration with the Ministry of Agriculture and Livestock Development, the Department of Agriculture (DOA), the National Agriculture Research Council (NARC), and the Agri Enterprise Center (AEC) of the Federation of Nepali Chamber of Commerce and Industry (FNCCI), with support from the United States Agency for International Development (USAID).

“Maize holds the potential to yield manifold benefits for farmers, the private sector, and the Government of Nepal, through the development of an efficient market system,” said Judith Almodovar, acting director of the Economic Growth Office at USAID Nepal. With this in mind, the two-day conference held in Kathmandu brought together government officials, policymakers, industry leaders, and experts from Nepal and the wider region to explore avenues for advancing the country’s maize sub-sector. It served as a platform for participants from India, Bangladesh, and Nepal, representing various functions of the maize value chain to share and exchange innovative commercial maize production, post-harvest, supply chain, and marketing models and policies aimed at improving efficiency, ensuring sustainability, and fostering competitiveness.

Addressing the opening session, Honorable Minister of Agriculture, Jwala Kumari Sah, highlighted the Government of Nepal’s priority to increase maize production and marketing, emphasizing the need to provide maize for food, feed, and fodder to boost incomes and improve livelihoods. While highlighting objectives and expectations from the conference, Country Representative for CIMMYT in Nepal, Dyutiman Choudhary, shared information about CIMMYT’s mandate and global expertise in maize science, as well as interventions to develop a maize seed-to-feed model in Nepal. The organization’s model fosters public-private farmer partnerships for commercial maize production as a key approach to develop an inclusive and sustainable maize sub-sector in the country. “As a result, maize yields have doubled in Nepal and farmer gate prices have increased by 50% in the last two years,” Choudhary explained.

CIMMYT scientists and partners engage in a panel discussion on maize commercialization. (Photo: CIMMYT)

Recommendations for sustainable improvement

The conference involved five different technical sessions over the course of two days, each focused on various themes related to production, marketing, international best practices, and policies. Experts from Bangladesh, India, and Nepal were involved in insightful discussions and shared valuable knowledge and experience for advancing the commercialization of the maize sub-sector in Nepal.

Participants made recommendations for the sustainable improvement of national maize production and commercialization to meet the growing demand for food, feed, and fodder while reducing reliance on imports. These include developing high-yielding, short-duration, stress-tolerant maize varieties, and identifying models for commercial maize production, post-harvest, storage, market linkages, and supportive policies for improved investment and coordination among public sectors, market actors, and service providers to meet national maize demand.

At the closing session, Govinda Prasad Sharma, secretary at the Ministry of Agriculture and Livestock Development (MOALD), notified attendees that MOALD is in the process of strengthening a national strategy for maize commercialization and that the learning from the conference will provide valuable inputs. He added that the participation of experts from neighboring countries has provided deep insights for policy development.

Unlocking insights from literature: exploring adaptation options in ACASA

Written by Julian Bañuelos-Uribe on . Posted in Blogs.

To address the vulnerability of increased climate risks which impact agriculture, it is imperative to identify location-specific adaptation options. Atlas of Climate Adaptation in South Asian Agriculture (ACASA) is working on identifying commodity specific hazards at different geographical regions and the key adaptation options aligned with geography and hazards. This has been done for major cereal crops (rice, wheat, and maize), coarse grains (millets), oilseeds (coconut, mustard), legumes and vegetable crops (chickpea, potato), livestock, and fisheries. In ACASA, Systematic Literature Review (SLR) serves as a fundamental tool to identify key climate adaptation options and assess their effectiveness, considering agroecological factors.

Literature reviews are a customary approach for researchers to grasp existing knowledge and findings. The SLR methodically establishes clear research objectives, employs structured search queries to identify relevant literature, applies defined exclusion criteria, and extracts data for scientific analysis. This structured approach facilitates mapping the literature, validating findings, identifying gaps, and refining methodologies thereby minimizing biases, and ensuring comprehensive coverage of evidence.

Commodity-specific research questions, aligned with the problem/population, intervention, comparison/consequences, outcome, and time PICO(T) framework, have been used to guide the search process. By utilizing keywords specific to these questions, ACASA sourced literature from reputable databases such as Web of Science, Scopus, Google Scholar, and local databases of South Asian countries: Bangladesh, India, Nepal, and Sri Lanka. Local databases and gray literature further bolstered the understanding of local conditions and broadened the coverage of studied literature.

Systematic Literature Review (SLR)

The searched literature was then filtered using the well-established Preferred Reporting Items for Systematic Reviews and Meta Analysis (PRISMA) framework. PRISMA provides a minimum set of evidence-based literature to be used for further analysis. Let us look at maize as an example of a commodity under analysis in ACASA. For maize, a total of 1,282 papers were identified and based on four exclusion criteria pertaining to adaptation options, quantitative assessment, hazard, and risk only of which 72 papers were shortlisted. The PRISMA framework supported in getting a manageable dataset for in-depth analysis while ensuring transparency in the overall filtering process.

After filtering through PRISMA, a bibliometric analysis was conducted which contained research trend analysis, regional distribution patterns, adaptation option categorizations, and a co-occurrence analysis. Useful patterns in popularity of studied adaptation options, hazards, and their linkages were observed through this analysis. For instance, drought was the most studied hazard, while pest diseases and economics were major hazard impacts studied for the maize literature. In terms of adaptation options, stress tolerant varieties were the most popular adaptation option. Further, co-occurrence analysis provided linkages between adaptation options and hazards, and demonstrated that researchers have also studied bundled technologies.

SLR helped understand the effectiveness of certain adaptation options. Going ahead, this step will be fully realized through a “meta-analysis” which will be pivotal in quantifying the evidence and prioritizing adaptation options for different agroecologies. SLR has proven to be an effective research method to build a comprehensive database that can be used across different thematic areas of ACASA. Adaptation options enlisted through SLR can be further substantiated through expert elicitations via heurism, crop modelling, cost-benefit analysis, and other important pillars of ACASA to identify efficient and cost-effective options.

SLR also provided the ACASA team with the opportunity to identify certain literature gaps such as uneven geographical coverage and excessive emphasis on certain adaptation options versus the rest. Conceptualization of systematically reviewing climate adaptation options in the South Asian context by integrating bibliometric and meta-analysis adds novelty to the current efforts of ACASA.

Blog written by Aniket Deo, BISA-CIMMYT India; Niveta Jain, ICAR-IARI India; Roshan B Ojha, NARC Nepal; and Sayla Khandoker, BARI Bangladesh

Successful surveillance results in early first detection of Ug99 in South Asia

Written by dmedina on . Posted in In the media.

The detection of the Ug99 wheat stem rust strain TTKTT in Nepal showcases the effectiveness of CIMMYT-led global surveillance efforts. Identified early through diligent field surveys by Nepal’s NPPRC and NWRP and confirmed by Denmark’s GRRC, this proactive response helped prevent further spread. Despite no subsequent detections in South Asia, the case underlines the importance of ongoing surveillance and development of resistant wheat varieties, supported by international initiatives.

Read the full story.

Unlocking the power of collaboration in global wheat science

Written by Julian Bañuelos-Uribe on . Posted in News.

CIMMYT Global Wheat Program (GWP) scientists visited National Agricultural Research Systems (NARS) partners in Pakistan, Nepal, and India during February 2024. The key purpose was to review current approaches and explore new opportunities to enhance collaborative wheat improvement activities.

NARS partners described their current priorities and recent changes in their activities, while CIMMYT shared recent modernization efforts of its wheat breeding and highlighted opportunities to enhance collaborative wheat improvement. GWP representatives included Interim Wheat Director Kevin Pixley, and scientists Naeela Qureshi, Velu Govindan, Keith Gardner, Sridhar Bhavani, T.P. Tiwari, and Arun K Joshi.

Representatives from the Pakistan Agricultural Research Council (PARC) and CIMMYT meet to identify chances for improved cooperation in wheat breeding research. (Photo: Awais Yaqub/CIMMYT)

Planning the future of South Asian wheat

In each country, CIMMYT and NARS leaders held a one-day meeting to review and plan their wheat improvement partnership, with attendance from 25-30 wheat scientists in each country. The sessions aimed to review and identify bottlenecks to the wheat impact pathway in each country, describe recent changes in the breeding programs of CIMMYT and NARS partners, and prioritize and agree updates to the NARS-CIMMYT wheat improvement collaborations.

NARS partners highlighted their wheat improvement programs through field visits to research stations. Visitors attended Wheat Research Institute (ARI), Faisalabad and National Agricultural Research Center (NARC), Islamabad in Pakistan; National Wheat Research Program (NWRP), Bhairahawa and National Plant Breeding & Genetics Research Center (NPBGRC), Khumaltar in Nepal; and Indian Institute of Wheat and Barley Research (IIWBR), Punjab Agricultural University (PAU), Borlaug Institute for South Asia (BISA), and the Indian Agricultural Research Institute (IARI) in India.

The GWP team also visited: Faisalabad Agricultural University, with a special focus on collaborative zinc biofortification work in Pakistan; farmers’ fields in Nepal to see participatory evaluations of elite wheat lines (candidates for release as new varieties) and to hear from farmers about challenges and expectations from improved varieties; and the Lumbini Seed Company to learn about the crucial role of seed companies, bottlenecks, and opportunities in the pathway from research to impact in farmers’ fields.

NARS scientists and directors in all three countries were enthusiastic about the opportunities for enhanced partnership to adopt some of the modernizing technologies that AGG has brought to CIMMYT. Partners are especially keen to –

  1. Receive earlier generation varieties, segregating breeding lines to empower them to select in their own environments.
  2. Model and explore strategies to shorten their breeding cycles.
  3. Apply quantitative genetics tools to better select parents for their crossing blocks.
  4. Adopt experimental designs that improve efficiency.
  5. Explore opportunities for co-implementing improvement programs through shared testing schemes, communities of practice (e.g. for quantitative genetics or use of exotic germplasm to address challenges from climate change), and more.
A highlight of the trip in Nepal: visiting on-farm trials, where farmers share insights about their preferences for improved varieties, where they often mentioned tolerance over lodging. (Photo: CIMMYT)

“The visit provided CIMMYT and NARS wheat scientists with the opportunity to exchange experiences and ideas, and to explore ways of enhancing collaborations that will strengthen our joint impact on wheat farmers and consumers,” said Pixley.

Following these visits, the Bangladesh Wheat and Maize Research Institute (BWMRI) soon reached out to CIMMYT to request a similar review and planning meeting, with a vision to modernize and strengthen their wheat improvement partnership.

Successful surveillance results in early first detection of Ug99 in South Asia

Written by Julian Bañuelos-Uribe on . Posted in News.

Successful global wheat disease surveillance and monitoring has resulted in early detection of wheat stem rust Ug99 in Nepal. A combination of vigilant field surveys and sampling by Nepal’s National Plant Pathology Research Centre (NPPRC) and National Wheat Research Program (NWRP), supported by rigorous and accurate disease diagnostics at the Global Rust Reference Center (GRRC), Denmark, resulted in confirmed detection of the Ug99 strain named TTKTT. The long running and sustained surveillance efforts undertaken by NPPRC and NWRP, including off-season surveys, proved vital in the detection of Ug99 in Nepal. Confirmed results were obtained from two field samples collected in early November 2023 from off-season summer wheat crops in Dolakha district, Nepal. Repeated experiments and high quality pathotyping and genotyping at GRRC confirmed the results.

“The combination of molecular genotyping of incoming samples, without prior recovery in our laboratory and independent diagnostic assays of recovered stem rust isolates, confirmed the presence of Ug99 and a highly virulent race variant termed TTKTT,” says professor Mogens Hovmþller, leader of the GRRC at Aarhus University in Denmark.

Suraj Baidya (NPPRC) and Roshan Basnet (National Wheat Research Program) undertake field surveys at Dandunghe, Dolakha, Nepal. (Photo: CIMMYT)

Ug99 was first detected in East Africa in 1998/99, and its unique virulence sparked fears that a large proportion of wheat cultivars globally would be at risk from this potentially devastating disease. The international wheat community came together through the Borlaug Global Rust Initiative (BGRI) to address the threats posed by Ug99. The BGRI partners have successfully monitored the evolution and spread of Ug99 and bred hundreds of resistant wheat varieties that are now being grown at scale in priority wheat growing regions. Migration of Ug99 from Africa to other regions, including South Asia, was always seen as likely due to the transboundary nature of the disease and long-distance dispersal of rust spores by wind.

Detection of a Ug99 race in Nepal is not therefore a surprise, but it highlights the effectiveness of the wheat rust surveillance and monitoring systems that have been developed. The disease was present at extremely low levels in the fields in Nepal, and early detection is one of the main factors in preventing disease spread. Other factors also contribute to reduced risk. The wheat on which the Ug99 race TTKTT was detected were fodder crops and cut soon after the surveys were completed, which prevented further buildup of disease. In addition, no wheat is grown in the main season in these areas, with farmers shifting to cultivation of potato (a non-host crop for stem rust).

According to Suraj Baidya, senior scientist and chief of NPPRC, “Extensive follow up surveys in the Dolakha detection area by NPPRC in the 2023/24 main season resulted in no wheat being observed and no detection of stem rust.” Similarly, extensive surveys by NPPRC throughout other wheat growing areas of Nepal in the 2023/24 main season have resulted in no reports of stem rust in the country. To date, extensive surveys in other countries in South Asia (Pakistan, Bangladesh, Bhutan) have not detected stem rust in 2023/24.

Although the current risk of stem rust outbreaks is considered to be low, detection of the Ug99 race TTKTT in Nepal is a clear reminder of the threat posed to wheat production in South Asia by the incursion of virulent stem rust races or other plant diseases of concern. “The spread and risk from transboundary diseases like stem rust is increasing,” says Dave Hodson, leader of the Wheat Disease Early Warning Advisory Systems (DEWAS) project at CIMMYT. “Sustained and increased surveillance efforts are needed across the region and expanded to include other important emerging diseases.” Successful deployment of Ug99 resistant cultivars through the BGRI partners, including CIMMYT, ICARDA and NARS, has decreased vulnerability, but it is important to note that the race TTKTT is a recently evolved variant of Ug99 with additional virulence compared to the original strains. As a result, not all cultivars in South Asia may have effective resistance today. Screening of germplasm and major cultivars from South Asia against TTKTT at the Kenya Agriculture and Livestock Research Organization (KALRO)/CIMMYT international stem rust screening nursery in Kenya is extremely important to get an accurate picture of current vulnerability.

The details of the diagnostic confirmation of Ug99 in Nepal are available at the GRRC website (see GRRC lab report)

Work on wheat disease surveillance and monitoring, plus breeding of resistant varieties is being supported by the DEWAS and AGG projects funded by BMGF and FCDO, UK.

Key partners –

National Plant Pathology Research Centre (NPPRC), Nepal. Contact: Suraj Baidya (suraj_baidya222@yahoo.co.in)

National Wheat Research Program (NWRP), Nepal. Contact: Roshan Basnet

Global Rust Reference Center (GRRC), Aarhus University, Denmark. Contact: Mogens HovmĂžller (mogens.hovmoller@agro.au.dk)

Cornell University. Contact: Maricelis Acevedo (ma934@cornell.edu)

CIMMYT. Contact: David Hodson (d.hodson@cgiar.org)

Enhancing wheat breeding efficiency in South Asia through early germplasm access

Written by Julian Bañuelos-Uribe on . Posted in Blogs.

Wheat field. (Photo: CGIAR)

In the dynamic landscape of wheat breeding, early access to germplasm emerges as a strategic catalyst for accelerating variety turnover and meeting the evolving challenges faced by farmers in South Asia. Since its inception, the Accelerating Genetic Gains in Maize and Wheat (AGG) project has pioneered new tools to optimize the wheat breeding process. One such tool, the efficient and low-cost 3-year breeding cycle, has been fine-tuned in Mexico, using the Toluca screenhouse and field advancement in ObregĂłn, laying the groundwork for faster variety turnover.

The inaugural set of lines generated through this enhanced breeding cycle is already undergoing Stage 1 trials in the ObregĂłn 2023-24 season. However, the innovation doesn’t stop there; to expedite the variety release process and garner robust data from the Target Population of Environments (TPE), Stage 2 lines are being rigorously tested at over 20 sites in South Asia through collaboration with National Agricultural Research and Extension Services (NARES) partners. In the seasons spanning 2021-2024, a total of 918 Stage 2 lines underwent rigorous trials, aiming to provide early access to improved wheat lines for testing and release by NARES and establish a genetic correlation matrix between ObregĂłn selection environments and diverse sites across South Asia.

These extensive trials serve a dual purpose. Firstly, they facilitate early access to improved wheat lines for testing and release by NARES, bolstering the agricultural landscape with resilient and high-yielding varieties. Secondly, they contribute to the establishment of a genetic correlation matrix between the selection environments in ObregĂłn and the diverse sites across South Asia. This matrix becomes a guiding compass, aiding in selecting the most promising lines for broader TPEs in South Asia and beyond.

Transformative impact on wheat varieties in South Asia

Through the support of our partners and funders from the Bill & Melinda Gates Foundation, the Foundation for Food and Agriculture Research (FFAR), the UK Foreign, Commonwealth & Development Office (FCDO), and the US Agency for International Development (USAID), great achievements have been recorded throughout the region. India, a prominent player in wheat cultivation, stands as a testament to the transformative impact of early access to advanced lines. The top three varieties, namely DBW187, DBW303, and DBW 222, covering over 6 million hectares, trace their roots to CIMMYT varieties. Adopting a fast-track approach through early-stage testing of these advanced lines at BISA sites in India, supported by the Delivering Genetic Gain in Wheat (DGGW) project, facilitated the release of these varieties two years ahead of the regular testing process. This expedited varietal release was complemented by the innovative early seed multiplication and dissemination approach introduced by the Indian Council of Agricultural Research (ICAR). Recent additions to this accelerated channel include varieties such as DBW 327, DBW 332, DBW 370, and 371, promising further advancements in wheat cultivation.

Pakistan

In Pakistan, the early access to advanced lines has been a catalyst for releasing high-yielding, climate-resilient, and nutritious wheat varieties. In 2023 alone, 12 new varieties were released, with the renowned ‘Akbar-19,’ introduced in 2019, covering a substantial 42% of cultivated land in Punjab. Data released by the Ayub Agricultural Research Institute (AARI), shows that this variety, known for its high yield potential, disease resistance, and enriched zinc content, has significantly contributed to increased wheat production in the region.

Nepal

Guided by policy interventions in the national varietal testing process, Nepal has experienced the fast-track commercialization of high-yielding and climate-resilient wheat varieties. Allowing multilocation testing of CIMMYT nurseries and advanced elite lines, Nepal released six biofortified zinc wheat varieties in 2020. The expeditious seed multiplication of these released and pre-release varieties has facilitated the rapid spread of new and improved wheat varieties.

The strategic utilization of early access to wheat germplasm in South Asia holds promise in accelerating variety turnover, offering farmers resilient and high-performing wheat varieties. Collaborative efforts between research institutions, government bodies, and international organizations exemplify the power of innovation in transforming agriculture. With an ongoing dedication to refining breeding cycles, expanding testing initiatives, and fostering collaboration, the AGG project contributes to building a sustainable and resilient agricultural future in South Asia. Early access to wheat germplasm emerges as a practical approach in this scientific endeavor, laying the foundation for a climate-resilient and food-secure region. The successes witnessed in India, Pakistan, and Nepal underscore the transformative potential of this approach, offering tangible benefits for agricultural communities in South Asia and beyond. In navigating the complexities of a changing climate and growing food demand, early access to wheat germplasm remains a pragmatic ally, propelling agricultural innovation and resilience to new heights.

Heat tolerant maize hybrids: a pursuit to strengthen food security in South Asia

Written by Julian Bañuelos-Uribe on . Posted in Blogs.

After a decade of rigorous effort, CIMMYT, along with public-sector maize research institutes and private-sector seed companies in South Asia, have successfully developed and released 20 high-yielding heat-tolerant (HT) maize hybrids across Bangladesh, Bhutan, India, Nepal, and Pakistan. CIMMYT researchers used a combination of unique breeding tools and methods including genomics-assisted breeding, doubled haploidy (a speed-breeding approach where genotype is developed by chromosome doubling), field-based precision phenotyping, and trait-based selection to develop new maize germplasm that are high-yielding and also tolerant to heat and drought stresses.

While the first batch of five HT maize hybrids were released in 2017, by 2022 another 20 elite HT hybrids were released and eight varieties are deployed over 50,000 ha in the above countries.

In South Asia, maize is mainly grown as a rainfed crop and provides livelihoods for millions of smallholder farmers. Climate change-induced variability in weather conditions is one of the major reasons for year-to-year variation in global crop yields, including maize in Asia. It places at risk the food security and livelihood of farm families living in the stress-vulnerable lowland tropics. “South Asia is highly vulnerable to the detrimental effects of climate change, with its high population density, poverty, and low capacity to adapt. The region has been identified as one of the hotspots for climate change fueled by extreme events such as heat waves and intermittent droughts,” said Pervez H. Zaidi, principal scientist at CIMMYT.

Heat stress impairs the vegetative and reproductive growth of maize, starting from germination to grain filling. Heat stress alone, or in combination with drought, is projected to become a major production constraint for maize in the future. “If current trends persist until 2050, major food yields and food production capacity of South Asia will decrease significantly—by 17 percent for maize—due to climate change-induced heat and water stress,” explained Zaidi.

From breeding to improved seed delivery–the CIMMYT intervention

In the past, breeding for heat stress tolerance in maize was not accorded as high a priority in tropical maize breeding programs as other abiotic stresses such as drought, waterlogging, and low nitrogen in soil. However, in the last 12–15 years, heat stress tolerance has emerged as one of the key traits for CIMMYT’s maize breeding program, especially in the South Asian tropics. The two major factors behind this are increased frequency of weather extremes, including heat waves with prolonged dry period, and increasing demand for growing maize grain year-round.

At CIMMYT, systematic breeding for HT maize was initiated under Heat Stress Tolerant Maize for Asia (HTMA), a project funded by the United States Agency for International Development (USAID) Feed the Future program. The project was launched in 2013 in a public–private alliance mode, in collaboration with public-sector maize research institutions and private seed companies in Bangladesh, Bhutan, India, Nepal, and Pakistan.

The project leveraged the germplasm base and technical expertise of CIMMYT in breeding for abiotic stress tolerance, coupled with the research capacity and expertise of the partners. An array of activities was undertaken, including genetic dissection of traits associated with heat stress tolerance, development of new HT maize germplasm and experimental hybrids, evaluation of the improved hybrids across target populations of environments using a heat stress phenotyping network in South Asia, selection of elite maize hybrids for deployment, and finally scaling via public–private partnerships.

Delivery of HT maize hybrids to smallholder farmers in South Asia

After extensive testing and simultaneous assessment of hybrid seed production and other traits for commercial viability, the selected hybrids were officially released or registered for commercialization. Impact assessment of HT maize hybrid seed was conducted in targeted areas in India and Nepal. Studies showed farmers who adopted the HT varieties experienced significant gains under less-favorable weather conditions compared to farmers who did not.

Under favorable conditions the yield was on par with those of other hybrids. It was also demonstrated that HT hybrids provide guaranteed minimum yield (approx. 1 t ha-1) under hot, dry unfavorable weather conditions. Adoption of new HT hybrids was comparatively high (19.5%) in women-headed households mainly because of the “stay-green” trait that provides green fodder in addition to grain yield, as women in these areas are largely responsible for arranging fodder for their livestock.

“Smallholder farmers who grow maize in stress vulnerable ecologies in the Tarai region of Nepal and Karnataka state in southern India expressed willingness to pay a premium price for HT hybrid seed compared to seed of other available hybrids in their areas,” said Atul Kulkarni, socioeconomist at CIMMYT in India.

Going forward–positioning and promoting the new hybrids are critical

A simulation study suggested that the use of HT varieties could reduce yield loss (relative to current maize varieties) by up to 36% and 93% by 2030 and by 33% and 86% by 2050 under irrigated and rainfed conditions respectively. CIMMYT’s work in South Asia demonstrates that combining high yields and heat-stress tolerance is difficult, but not impossible, if one adopts a systematic and targeted breeding strategy.

The present registration system in many countries does not adequately recognize the relevance of climate-resilience traits and the yield stability of new hybrids. With year-to-year variation in maize productivity due to weather extremes, yield stability is emerging as an important trait. It should become an integral parameter of the registration and release system.

Positioning and promoting new HT maize hybrids in climate-vulnerable agroecologies requires stronger public–private partnerships for increasing awareness, access, and affordability of HT maize seed to smallholder farmers. It is important to educate farming communities in climate-vulnerable regions that compared to normal hybrids the stress-resilient hybrids are superior under unfavorable conditions and at par with or even superior to the best commercial hybrids under favorable conditions.

For farmers to be able to easily access the new promising hybrids, intensive efforts are needed to develop and strengthen local seed production and value chains involving small-and medium-sized enterprises, farmers’ cooperatives, and public-sector seed enterprises. These combined efforts will lead to wider dissemination of climate-resilient crop varieties to smallholder farmers and ensure global food security.