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research: Climate change science

Strengthen the soil, strengthen the future of agri-food systems: The Economics of Healthy Soils for Sustainable Food Systems

Written by mcallejas on . Posted in Blogs.

Soil health is not just a medium for healthy crop production; it’s also a vital pillar to support sustainable food production and ultimately a nation’s economy. In India, where over 45% of the population works in agriculture, soil health underpins household and national food security, rural incomes and the economy at large. Despite this dependence, the ratio of agricultural production to the national income, i.e. GDP has fallen from 35% in 1990 to 15% in 2023, a decline driven by low productivity, shrinking farm incomes, and environmental degradation (Government of India, 2023).

A tractor operates in an agricultural field in India (Photo: CIMMYT).

India faces an annual economic loss of  ₹2.54 trillion annually—about 2% of its GDP—due to land degradation and unsustainable land-use practices (TERI, 2018). For smallholder farmers, soil degradation is a silent economic burden that reduces yields and increases input costs. In Bihar, studies by the Cereal Systems Initiative for South Asia (CSISA) show that droughts have a lasting impact on soil quality and agricultural productivity, with increasing frequency and severity exacerbating vulnerabilities in states like of Bihar and its neighboring states (Nageswararao et al., 2016; Singh et al., 2022).

The frequency of these drought conditions pushes farmers into a vicious cycle of low productivity, high costs for irrigation, and a growing dependence on non-farm income sources exacerbating the state’s vulnerability to drought (Kishore et al., 2014).

“CIMMYT India scientists greatly value the opportunity to collaborate with colleagues from ICAR and other NARES partners in supporting farmers to enhance soil health and achieve sustainable productivity”, said Alison Laing, CSISA project lead in India. “We are proud of the contribution we make alongside the Indian national systems to improving farmers’ livelihoods”, she added

Investing in solutions for soil resilience

Addressing soil degradation and climate challenges requires investment in climate-resilient agricultural technologies, and robust agronomic research. Evidence-based policies are critical to sustain agriculture, improve farmer well-being and ensure food and economic security.

A promising innovation is the Soil Intelligence System (SIS), launched in 2019 under CSISA. Initially operational in Andhra Pradesh, Bihar, and Odisha, SIS generates high-quality soil data and digital maps to provide farmers with precise agronomic recommendations. These recommendations help reduce fertilizer and water overuse, improving efficiency and reducing greenhouse gas emissions. By empowering smallholder farmers with data-driven decision-making, SIS exemplifies how technology can enhance productivity and sustainability.

SIS’s success extends beyond the farm. Data-driven insights have influenced policies like the Andhra Pradesh State Fertilizer and Micronutrient Policy, demonstrating the potential of soil health management to drive systemic agricultural reforms.

Working in Andhra Pradesh, Bihar and Odisha, SIS uses soil spectroscopy and digital mapping to improve sustainable soil management, reduce costs and increase productivity for smallholder farmers. (Photo: CIMMYT)

The 3M Framework: measure, monitor and manage

This year’s World Soil Day theme, “Caring for Soils: Measure, Monitor, Manage,” highlights the importance of data driven soil management. By measuring key indicators like organic carbon levels and erosion rates, and monitoring changes overtime, policymakers can develop sustainable strategies for soil restoration.

Scaling initiatives like SIS is crucial. Robust soil monitoring programs can inform better alignment between subsidies and sustainable practices. Together with state and central governments, NGOs, and other research organizations, CIMMYT is actively collaborating with farmers to measure, monitor and manage soil health for long-term sustainability and resilience.

 

References:

  1. Government of India (2023). Contribution of agriculture in GDP. Department of Agriculture & Farmers Welfare. Accessed online.
  2. TERI (2018). Economics of Desertification, Land Degradation and Drought in India, Vol I. The Energy and Resources Institute. Accessed online.
  3. Nageswararao, M.M., Dhekale, B.S., & Mohanty, U.C. (2016). Impact of climate variability on various Rabi crops over Northwest India. Theoretical and Applied Climatology, 131(503–521). https://doi.org/10.1007/s00704-016-1991-7.
  4. Singh, A. & Akhtar, Md. P. (2022). Drought-like situation in Bihar: Study and thought of sustainable strategy. IWRA (India) Journal, 11(1). Accessed online.
  5. Kishore, A., Joshi, P.K., & Pandey, D. (2014). Droughts, Distress, and Policies for Drought Proofing Agriculture in Bihar, India. IFPRI Discussion Paper 01398. https://ssrn.com/abstract=2545463.

Svalbard Global Seed Vault Historic Deposit Bolsters Food Security Amid Crises

Written by dmedina on . Posted in In the media.

CIMMYT contributed over 5,400 maize and wheat samples to the Svalbard Global Seed Vault’s recent historic deposit, reinforcing its commitment to safeguarding crop diversity essential for global food security. These deposits protect genetic resources vital for adapting to climate change and improving resilience, especially in vulnerable regions. This backup effort ensures CIMMYT’s research on these staple crops remains available to support sustainable food systems and address crises worldwide.

Read the full story.

Linking sustainable agricultural methods

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

While agricultural food systems feed the world, they also account for nearly a third of the world’s greenhouse gas (GHG) emissions. Reducing the negative environmental footprint of agrifood systems while at the same time maintaining or increasing yields is one of the most important endeavors in the world’s efforts to combat climate change.

One promising mechanism is carbon credits, a set of sustainable agricultural practices designed to enhance the soil’s ability to capture carbon and decrease the amount of GHG’s released into the atmosphere.

Farmers generate these carbon credits based on their reduction of carbon released and then sell these credits in the voluntary carbon market, addressing the critical concern of sustainably transforming agricultural systems without harming farmers’ livelihoods.

Two is better than one

Conservation Agriculture (CA) is a system that involves minimum soil disturbance, crop residue retention, and crop diversification, among other agricultural practices. Its potential to mitigate threats from climate change while increasing yields has made it increasingly popular.

Using remote sensing data and surveys with farmers in the Indian states of Bihar and Punjab, four CIMMYT researchers quantified the effect on farmer’s incomes by combining CA methods with carbon credits. Their findings were published in the April 22, 2024, issue of Scientific Reports.

Previous CIMMYT research has shown that implementing three CA practices: efficient fertilizer use, zero-tillage, and improved rice-water management could achieve more than 50% of India’s potential GHG reductions, amounting to 85.5 million tons of CO2.

“Successfully implemented carbon credit projects could reward farmers when they adopt and continue CA practices,” said Adeeth Cariappa, lead author and environmental and resource economist at CIMMYT. “This creates a win–win scenario for all stakeholders, including farmers, carbon credit businesses, corporate customers, the government, and the entire economy.”

Farmers would enjoy an additional income source, private sectors would engage in employment-generating activities, the government would realize cost savings, and economic growth would be stimulated through the demand generated by these activities.

Less carbon and more income

The researchers found by adopting CA practices in wheat production season, farmers can reduce GHG emissions by 1.23 and 1.97 tons of CO2 per hectare of land in Bihar and Punjab States, respectively.

The researchers determined that CA practices, when combined with carbon credits, could boost farmer income by US $18 per hectare in Bihar and US $30 per hectare in Punjab. In Punjab, however, there is a ban on burning agricultural residue, which reduces potential earnings from carbon markets to US $16 per hectare.

“More farmers engaging CA methods is an overall positive for the environment,” said Cariappa. “But convincing individual farmers can be a struggle. By showing them that carbon credits are another potential source of income, along with increased yields, the case for CA is that much stronger.”

While the potential benefits are significant, there are challenges to linking CA and carbon credits.

“To achieve these potential benefits, carbon credit prices must rise, and projects must be carefully planned, designed, monitored, and implemented,” said Cariappa. “This includes selecting the right interventions and project areas, engaging with farmers effectively, and ensuring robust monitoring and implementation mechanisms.”

Eight-year study in India by CGIAR and ICAR scientists suggests adoption of Conservation Agriculture can boost yields and manage an increasing carbon footprint

Written by Nima Chodon on . Posted in Publications.

Twenty-twenty four is set to become one of the hottest years on record. Warmer temperatures are destabilizing ecosystems, threatening human life, and weakening our food systems. On Earth Overshoot Day, CIMMYT calls for increased attention to the interplay between environmental health and efficient, abundant food production through sustainable practices.

Food systems are one of the top contributors to greenhouse gas (GHG) emissions, accounting for one-third of all human-caused GHG emissions. While contributing to climate change, food production is also sorely impacted by it, undermining agrarian livelihoods and the ability to feed an increasing global population. Extreme and unpredictable weather is causing economic hardship, food and nutrition insecurity, and use of environmentally harmful practices.

In the Western Indo-Gangetic Plains of India, rice and wheat are the dominant staple crops, grown yearly in rotations covering more than 13 million hectares. But conventional tillage-based methods have been unable to increase yields. Some of these traditional methods based on intensive tillage have harmed the soil, exhausted aquifers, and increased GHG emissions, without raising crop yields. CGIAR soil and climate scientists and agronomists have partnered to find solutions that help increase rice and wheat production, while minimizing harmful environmental effects.

One of the CA-based practice research fields at ICAR-CSSRI. (Photo: Nima Chodon/CIMMYT)

At CIMMYT, we interviewed a group of CGIAR scientists who recently published a long-term study on sustainable intensification in the Western Indo-Gangetic Plains. Their work, conducted at the Central Soil and Salinity Research Institute (ICAR-CSSRI) in Karnal, India, demonstrates how integrating Conservation Agriculture (CA)-based principles into cropping systems can support climate-resilient and sustainable food systems.

“Today, agriculture faces many challenges, such as increasing input costs to maintain yield in the face of climate change and ensuring the sustainability of agricultural land,” said Mahesh Gathala, senior scientist at CIMMYT.

He mentioned that the collaborative research spanned over eight years, covering various crops and cropping cycles, and studying seven scenarios representing different farming practices. One scenario was based on farmers’ existing practices, while the other six involved combining and integrating the agronomic management practices and crop diversification options based on CA principles. The team collected data on yield, profitability, soil health, global warming potential, and fertilizer use, to name critical factors.

Gathala highlighted, “The findings are consistent with our previous research conclusions, while reinforcing the significant compounding impact of Conservation Agriculture-based cropping practices in the region, in the long-run.”

According to M.L. Jat, a former CIMMYT scientist who is global director for ICRISAT’s Resilient Farm and Food Systems Program, the CA-based measures that emerged from this research are applicable in much of the Western Indo-Gangetic Plains and beyond.

“Most of our research trials over some 2-5 years have provided substantial evidence in favor of Conservation Agriculture-based cropping diversification and sustainable intensification,” Jat said. “However, this study is one of very few long-term, collaborative research trials that provide strong evidence for policy decisions on resilient, climate-smart cropping system optimization to boost yields and nutrition, while improving soil health and fighting climate change.”

Other lead authors of the publication, Timothy Krupnik, principal scientist at CIMMYT and CGIAR South Asia, and Tek Sapkota, the Climate Change Science lead at CIMMYT, provided further explanation of important lessons from this eight-year study.

Two CA-based practice research scenarios at ICAR-CSSRI. (Photo: Nima Chodon/CIMMYT)
How does CA contribute to the sustainable and conscious use of natural resources? In what ways could CA be framed to governments to develop policies that do a better job of feeding us nutritious food while contributing to climate change adaptation and mitigation?

Tek Sapkota: Conservation Agriculture promotes the production of nutritious, diversified crops, sustainable yield improvements, climate change adaptation, economic benefits, and environmental protection. Governments can support these initiatives through financial incentives, subsidies, investment in research and extension services, and the development of supporting infrastructure and market access. This support further enables farmers to implement and benefit from sustainable agricultural practices.

CIMMYT and CGIAR-led projects in South Asia, like CSISA/SRFSI/TAFFSA, have already recorded some wins for CA implementation. What are some immediate implications of this study on CIMMYT’s ability to deliver this knowledge to more smallholders in the region?

Timothy Krupnik: The ICAR-CIMMYT partnership establishes long-term experiments, or living labs, across diverse ecologies to build trust among smallholder farmers, extension workers, and stakeholders. These initiatives aim to demonstrate CA’s benefits, as part of sustainable intensification. The science-based evidence generated will be co-owned by partners, through their extension networks, and shared with farm communities to highlight CA’s advantages. Additionally, the study supports reducing carbon footprints, contributing to climate change mitigation and sustainable agricultural practices and potentially used by carbon market players to disseminate CA.

Apart from climate resilience, could you explain what are the economic benefits of diversification in the rice-wheat dominant systems?

Tek Sapkota: Diversifying away from rice-wheat cropping systems provides significant economic benefits beyond climate resilience. It enhances income stability, improves resource use efficiency, maintains soil health, reduces production costs (such as irrigation expenses and water usage), and opens up new market opportunities. Diversification contributes to the creation of more sustainable and profitable farming systems.

How can CGIAR and national agricultural research and extension systems promote more widespread adoption of these technologies by farmers in South Asia and beyond?

Tek Sapkota: By establishing a multi-stakeholder platform for learning, knowledge sharing, and developing adoption pathways, CGIAR Research Centers could work together with national partners to create programs that support capacity building and knowledge transfer. Another crucial step would be to collaboratively adapt and customize the technology to local production conditions ensuring smooth implementation at the grassroots level. Additionally, it is important to encourage innovations in policies, markets, institutions and financial mechanisms to facilitate scaling.

Read excerpts of the full journal article: Enhancing productivity, soil health, and reducing global warming potential through diverse conservation agriculture cropping systems in India’s Western Indo-Gangetic Plains

Launch of a new Global Partnership for the Vision for Adapted Crops and Soils initiative

Written by Julian Bañuelos-Uribe on . Posted in Press releases.

Traditional and nutrient-rich crops are vital for global food security. (Photo: CIMMYT)

Rome/Texcoco, Mexico – An initiative to build resilient agrifood systems grounded in diverse, nutritious, and climate-adapted crops grown in healthy soils, today marked another milestone through a new partnership between the Food and Agriculture Organization of the United Nations (FAO) and CIMMYT, a CGIAR Research Center.

FAO and CIMMYT signed a Memorandum of Understanding establishing a Partnership for the Vision for Adapted Crops and Soils (VACS) initiative. The joint Partnership will play a pivotal role leading efforts to coordinate, grow, and strengthen the VACS movement across a wide range of public and private stakeholders.

“By joining forces with CGIAR and CIMMYT, we bring together our collective capacities to build a strong momentum and platform to advance the VACS,” said FAO’s Director-General QU Dongyu. “VACS effectively brings together the Four Betters set out in the FAO Strategic Framework 2022-31: better production, better nutrition, a better environment and a better life – leaving no one behind.”

“Our 2030 Strategy focuses on strengthening agrifood systems to increase nutritional value and climate resilience,” said CIMMYT’s Director General, Bram Govaerts. “We are proud to stand united, through VACS, with FAO, whose excellent track record on policy work and networking with national governments will help equip farmers with resilient seed and climate-smart cropping systems that regenerate, rather than degrade, the soils on which their diets and livelihoods depend.”

Launched in 2023 by the U.S. Department of State in partnership with the African Union and FAO, the VACS movement aims to build sustainable and resilient agrifood systems by leveraging opportunity crops and building healthy soils to enhance agricultural resilience to climate change and improve diets. Nutrient-rich and traditional crops like sorghum, millet, cowpea, and mung bean are vital for food security and nutrition under climate change but have seen little attention so far. VACS recognizes the interdependence of crops and soils: Crops need good soil to be productive, and different crops can only be sustainably grown on some types of land.

FAO-CIMMYT partnership aims to boost farm productivity and nutrition

Since its launch the VACS initiative has supported many activities including the Quick Wins Seed Systems Project in Africa, which promotes the adoption of climate-resilient dryland grains and legumes and helps smallholders access seeds of local nutritious crops like pearl millet, finger millet, and mung bean, and connects them with markets and agri-services. Meanwhile, the VACS Fellows programme trains African breeding professionals, strengthening regional agrifood systems. In Central America, InnovaHubs partner with CGIAR, Mexico, and Norway to connect farmers with markets, technologies, and high-quality seeds. FAO, through its work, including as part of the International Network on Soil Fertility and Fertilizers (INSOILFER) and the Soil mapping for resilient agrifood systems (SoilFER) project, assists members with the implementation of sustainable and balanced soil fertility management for food security and to promote actions to enhance the link between nourished healthy soils and opportunity crops.

Leveraging on the expertise and mandates of both CIMMYT and FAO, the new joint VACS Partnership will support, coordinate and amplify the impact of all stakeholders of the VACS movement, public and private, through the following functions:

  • Strategy: The Partnership will develop and maintain a VACS strategy, including by defining its mission, objectives, and approach.
  • Resource Mobilization: The Partnership will work with public and private sector donors to increase investments in VACS-aligned work.
  • Donor and Implementer Coordination: The Partnership will coordinate work among major VACS donors and implementers, including by coordinating the VACS Implementers’ Group.
  • Stakeholder Engagement: The Partnership will strengthen ties across public and private stakeholders to catalyze action in support of VACS, including by coordinating the VACS Community of Practice and the VACS Champions program.
  • Shaping the Policy Environment: The Partnership will coordinate the development of a VACS policy agenda and work to advance it at the local, national, and multinational levels.
  • Communications: The Partnership will elevate the importance of diverse crops and healthy soils as a fundamental means of advancing a range of sustainable development goals.
  • Results Management: The Partnership will develop and maintain a results management framework to track progress in achieving VACS objectives.

About CIMMYT

CIMMYT is a cutting edge, non-profit, international organization dedicated to solving tomorrow’s problems today. It is entrusted with fostering improved quantity, quality, and dependability of production systems and basic cereals such as maize, wheat, triticale, sorghum, millets, and associated crops through applied agricultural science, particularly in the Global South, through building strong partnerships. This combination enhances the livelihood trajectories and resilience of millions of resource-poor farmers, while working towards a more productive, inclusive, and resilient agrifood system within planetary boundaries.

About FAO

The Food and Agriculture Organization (FAO) is a specialized agency of the United Nations that leads international efforts to defeat hunger.

Our goal is to achieve food security and nutrition for all by enabling all people to have regular access to enough locally appropriate high-quality nutritious food to prevent all forms of malnutrition and to lead active, healthy lives. With 195 members – 194 countries and the European Union, FAO works in over 130 countries worldwide.

For more information or interviews:

Jelle Boone
Interim Head of Communications, CIMMYT
j.boone@cgiar.org
Mobile/WhatsApp: +52 595 1247241

Peter Mayer
FAO News and Media
peter.mayer@fao.org

Innovation hubs in western Honduras, cornerstones for agricultural sustainability

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

Visit to the hub located at Elmer’s plot in Lentago, Belén Gualcho Ocotepeque, Honduras. (Photo: Erardo Díaz)

We are paving the way for significant agricultural change in the community of Lentago, Belén Gualcho, Ocotepeque. By means of the AgriLAC Resiliente initiative, we have taken firm steps towards more sustainable and resilient agrifood systems in Honduras through continuation efforts at the agricultural innovation hub.

“Fertilization is one of the main issues identified through plot diagnosis and the participation of several producers from three areas (Lentago, El Aguacatillo and La Mohaga),” says Jesús Erardo Díaz Gómez. He is a technician participating in the project and provided Elmer Valeriano with technical support during the installation of the hub on his plot, where sustainable practices are currently being implemented and compared with conventional local practices.

Traditionally, fertilization occurs 15 to 22 days after planting. “The innovation hub seeks to improve this practice by evaluating fertilization during planting in order to ensure adequate nutrient availability maize plants,” says Erardo, who is part of the InnovaHub West Honduras technical team, which coordinates local organization and stakeholder AgriLAC Resiliente efforts, promoting innovation and sustainability in the Honduran agricultural sector.

InnovaHub Occidente is not just impacting fertilization methods. Erardo states that the seed selection processes for future crops also needs to be reexamined. Currently, seeds are selected once they “tapizcan” (harvest) the maize, taking it out of the field. However, this has its problems. “With the innovation hub, we aim to start this process in the field, carefully selecting the healthiest plants most suited to the needs of local producers,” he explains.

Hubs like the one in Lentago help disseminate knowledge about sustainable practices. The CIMMYT and ODECO technical team has played a pivotal role resolving questions and orienting farmers about sustainable maize management.

Of course, the success of efforts like this one requires commitment and active participation from farmers like Elmer Valeriano. Elmer is a proactive farmer open to new techniques. He is an inspirational model showing how collaboration between technicians and farmers drive the shift towards more sustainable and efficient practices, like the installation of a rain gauge that promises to yield vital data for informed decision making in the hub.

Though seemingly simple, the rain gauge provides a way to better understand crop irrigation requirements and adjust agricultural practices accordingly. “The results will allow us to compare the amount of water received with actual crop requirements, providing a reliable foundation for making decisions,” says Erardo, noting Elmer’s commitment to collecting and recording the data from the rain gauge.

Elmer reads the rain gauge. (Photo: Erardo Díaz)

The work by InnovaHub Occidente de Honduras is not isolated. It is a part of a broader initiative: AgriLAC Resiliente. This CGIAR driven effort aims to transform agrifood systems in Latin America and the Caribbean by increasing resilience and competitiveness. The InnovaHubs in Honduras, in collaboration with organizations such as the Alliance of Bioversity International and CIAT and CIMMYT, are paving the way towards a more prosperous and sustainable future for agriculture in the region.

Ultimately, success for these initiatives will depend on continued collaboration among all stakeholders: farmers, technicians, organizations, and local communities. More resilient agrifood systems that not only feed present generations, but also protect and restore land for future generations, are possible as long as we continue to focus on innovation and sustainability.

The original piece was published in Spanish. 

Translating strategy into scientific action

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

Participants at the SAS Africa implementation roadmap retreat. (Photo: Maria Monayo/CIMMYT)

Stronger partnerships, innovation, and agile science for impact were resounding themes when CIMMYT researchers from the Sustainable Agrifood Systems (SAS) program in Africa gathered in Nairobi to develop the program’s implementation roadmap in alignment with the CIMMYT 2030 Strategy.

The three-day retreat from 25-28 March, attended by research teams from the eastern, western, southern, and Horn regions of Africa, provided a platform to share insights and chart a course towards sustainable agricultural development for the continent.

Routes to amplifying research impact

In her opening remarks, SAS Program Director, Sieglinde Snapp, emphasized the importance of grounding the CIMMYT 2030 Strategy in the African context and the urgent need for actionable plans to address pressing challenges in agrifood systems. Snapp drew attention to the significance of collaboration with public, private, and civil society stakeholders, highlighting how inclusive partnerships are essential for driving meaningful change. She urged the team to focus on turning strategic vision into tangible plans, with clear milestones to track progress.

“Humanity pulled together and got to the moon in the 60s. Conventional science and engineering got us there,” said Snapp. “However, when we have high uncertainty and high-value conflicts, we need to have all stakeholders at the table. We need to do action science and think of what the actual science looks like.”

Christian Witt, senior program officer at the Bill & Melinda Gates Foundation, delivered a keynote address focusing on the importance of advancing agronomy globally and exploring opportunities at the national level. He advocated for a balanced approach to tackling macroeconomic challenges while fostering grassroots innovation that augments impact. He also underscored the CIMMYT 2030 Strategy’s critical role across CGIAR, calling for a pivot in funder influence towards a unified, demand-driven research methodology.

Bill & Melinda Gates Foundation Senior Program Officer, Christian Witt, gives a keynote speech on advancing global agronomy. (Photo: Maria Monayo/CIMMYT)

Deep diving into the strategy

The retreat also featured a panel discussion on the CIMMYT 2030 Strategy. From the value of strategic partnerships to the need for excellence in research and delivery, the panel highlighted the key pillars of CIMMYT’s strategy and underscored the importance of aligning efforts with global priorities and challenges.

Participants discussed the role of data systems for agile agronomy, noting the need for innovative methodologies to harness the vast amount of data available. They placed key focus on empowering farmers, particularly through initiatives like the BACKFEED Farmer Agency. This inclusive feedback system enables knowledge co-creation via mobile phones, fostering networking among farmers of diverse backgrounds. Regular and spontaneous interactions facilitate data collection, addressing social exclusion in agricultural information channels faced by those with multiple vulnerabilities.

Paswel Marenya, SAS associate program director for Africa, shared thought-provoking insights on the Pathways to Impact​. He demonstrated how complementarity and bundled approaches, impact orientation, evidence-supported scaling, subsidiarity, localization, and training of farmers and communities, and inclusive seed systems, can transform food systems.

During an analysis of the strategy in the African context, central inquiry focused on identifying areas where SAS could deliver the greatest value. Discussions revealed a consensus on several key priorities: the need of developing and implementing policies from the ground up, addressing the specific needs of smallholder farmers, enhancing capacity for sustainable development, ensuring inclusivity for youth and women, expanding innovative solutions, and encouraging regional collaboration. These common themes highlight a united drive towards comprehensive and impactful agricultural advancement across Africa’s diverse landscapes.

On implementing the strategy, attendees discussed a range of plans and proposals:

  • Diversify from maize to alternative crops, such as pigeon peas.
  • Engage stakeholders in agile agronomy discussions to identify impact pathways.
  • Train the private and public sectors for climate-smart agriculture.
  • Address concerns regarding prevailing inefficiencies within the formal seed system and the lack of business models for non-hybrid seeds like groundnut or wheat.
  • Identify opportunities for financial inclusion through aggregator and off-taker models.
  • Consider the importance of mechanization policies, markets, and extension services.
  • Engage strategically in the humanitarian-development-peace nexus, as the majority of food insecurity is found in conflict areas.
  • Improve nutrition education and meet local demand for nutritious crops like pigeon pea and groundnut.
  • Consider the role of data and analytics in humanitarian-development-peace pathways, policy engagement for building value chains, and the significance of impact pathways.
  • Promote the importance of open science, data sharing, and addressing gaps between product enhancement and production.
Participants discuss how SAS can further contribute to CIMMYT’s 2030 Strategy. (Photo: Maria Monayo/CIMMYT)

Eyes on the future

In reflections at the end of the retreat, Snapp reiterated the importance of investing in soil resilience through agile agronomy and participatory research to foster collaboration and inclusivity in decision-making processes. She focused on the significance of foresight targeting and market intelligence, particularly in regions grappling with soil degradation and the impact of the climate crisis. Her presentation highlighted key priorities for driving impactful agricultural development, including effective data management, climate adaptation, and alignment of existing solutions with climate goals. The interconnectedness of foresight targeting, seed systems, and agile agronomy was underscored, emphasizing the importance of collaboration and addressing essential topics like nitrogen and climate change. Additionally, Snapp reiterated the crucial role of collaborative efforts between different teams and organizations in effectively advancing agricultural research and development initiatives.

To cap off three days of intense discussions and strategy-building, participants took part in fun team-building activities that echo CIMMYT’s core values of excellence, integrity, and teamwork.

Gridded crop modeling to simulate impacts of climate change and adaptation benefits in ACASA

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

Global temperatures are projected to warm between 1.5-2 degrees Celsius by the year 2050, and 2-4 degrees Celsius by 2100. This is likely to change precipitation patterns, which will impact crop yields, water availability, food security, and agricultural resilience.

To prepare for these challenges, Atlas of Climate Adaptation in South Asian Agriculture (ACASA) uses process-based simulation models that can predict crop growth, development, and yield in order to understand the response of crops to climate change. Models such as Decision Support System for Agrotechnology Transfer (DSSAT), InfoCrop, and Agricultural Production Systems Simulator (APSIM) facilitate the field scale study of the biophysical and biochemical processes of crops under various environmental conditions, revealing how they are affected by changing weather patterns.

The ACASA team, along with experts from Columbia University and the University of Florida, met for a three-day workshop in January 2024 to boost the work on spatial crop modeling. The aim was to design a modeling protocol through a hands-on demonstration on high-performance computers. When scientifically executed, gridded spatial crop modeling–even though complex and data-intensive–can be a great way to frame adaptation and mitigation strategies for improving food security, which is one of ACASA’s goals.

ACASA’s Spatial Crop Modelling Group meets in Colombo, Sri Lanka, January 2024. (Photo: CIMMYT)

Decisions on data

The group decided to use DSSAT, APSIM, and InfoCrop for simulating the impact of climatic risks on crops such as rice, wheat, maize, sorghum, millet, pigeon pea, chickpea, groundnut, soybean, mustard, potato, cotton, and more. They chose harmonized protocols across all three models with standard inputs, such as conducting simulations at 0.05 degrees. The model input data about weather, soil, crop varietal coefficients, and crop management are being collected and processed for model input formats at 5 kilometer (km) spatial resolution.

A Python version called DSSAT-Pythia is now available to accelerate spatial and gridded applications. The programming for implementing InfoCrop on the Pythia platform is in progress. InfoCrop has been proven in India for past yield estimations, climate change spatial impact, and adaptation assessments for 12 crops.

For other crucial modeling components, a work plan was created including developing regional crop masks, crop zones based on mega-commodity environments as defined by CGIAR, production systems, crop calendars, and irrigated areas by crop. Genetic coefficients will then be calculated from measured past values and recent benchmark data of varietal units.

With this information, several adaptation options will be simulated, including changes in planting dates, stress-tolerant varieties, irrigation, and nitrogen fertilizer (quantity, methods, and technology), residue/mulching, and conservation tillage. The team will evaluate impact and adaptation benefits on yields, water, and nitrogen-use efficiency based on the reported percentage change from the baseline data.

As the project progresses, this work will make strides towards realizing food security for the planet and increasing the resilience of smallholder farming practices.

Blog written by Anooja Thomas, University of Florida; Apurbo K Chaki, BARI, Bangladesh; Gerrit Hoogenboom, University of Florida; S Naresh Kumar, ICAR-IARI, India

Roots of resilience: my journey as a Conservation Agriculture champion

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

I am Grace Malaicha, a proud native of the Zidyana Extension Planning Areas in Central Malawi, where my journey with Conservation Agriculture (CA) began. In 2005, I observed neighboring farmers practicing CA techniques on their land. Intrigued and inspired, I decided to embark on this path myself, joining the CA program initiated by CIMMYT and Total LandCare in 2006. I started practicing it on my demonstration plot and observed that yields were getting higher from the second year onwards.

My dedication to CA has changed not only myself but also influenced other members of my farming community. As a mother trial host farmer under the CGIAR Initiative: Diversification for resilient agribusiness ecosystems in East and Southern Africa today, I have been implementing different treatments, which include maize doubled-up legume system and improved drought-tolerant maize varieties planted under CA on flat land and comparing it to the traditional ridge tillage system that involves substantial soil movement.

But what does CA mean to me? It is more than just a set of principles that I apply like minimum soil disturbance, mulching, and crop rotation. CA reduces drudgery, secures yields, and maintains productivity in times of climate change. CA has changed my approach to farming, transforming my once conventional maize monocrop into a diverse maize-legume system. By intercropping with two crops, I have spread the risk of unanticipated crop failure, while incorporating groundnut, cowpeas, and pigeon pea into the mix, which are more drought tolerant. I increased the land area under CA and tried it on many other crops including different legumes as rotation or intercrops, birds-eye chili, vegetables, and cassava.

Over the years, I have witnessed firsthand the harsh realities of a changing climate in central Malawi, from intense heat to prolonged droughts and erratic rainfall patterns. This year, 2024, has even been worse due to the prolonged dry spells between January and February, and the erratic rainfall during this time. Despite these challenges, our CA plots have continued to thrive, showcasing the resilience and adaptability of climate-smart farming practices.

Grace trains farmers on Conservation Agriculture. (Photo: Christian Thierfelder/CIMMYT)

Recognizing the power of knowledge sharing and from the encouragement by CIMMYT and Total LandCare, I started to train fellow farmers, both locally and across borders. At first, I worked with women groups around my homestead and trained about 100 female farmers on the principles of CA. I was fortunate to be given the opportunity to train other farmers in other districts of Malawi. Since 2008, I have also trained farmers in eastern Zambia and from Mozambique where all farmers speak my language Chichewa. Farmers believe other farmers more and are now realizing the benefits of implementing CA in their own fields.

I enrolled to be a local trainer in CA within my community in 2016. My passion for teaching and catalyzing change has led to the adoption of CA by numerous farmers. I embrace my commitment to ongoing learning through carefully implementing these CA trials and playing an active role during awareness meetings.

My life had changed so much. I was speaking on the radio and television. In 2012, the Minister of Agriculture visited my plot, and I was asked to speak in front of a Parliamentary Committee about my experiences as a smallholder woman farmer in Malawi. I spoke about what women can do in agriculture and what changes I made on my land. From representing my country at high level meetings, each step has shaped me into a resilient and empowered woman.

However, my journey has not been without obstacles, including hardships in my personal relationship. In 2012, I made the decision to join my husband in South Africa where I took up menial jobs to earn a living, abandoning my plot back home. But my true passion lay in farming, and I decided to make the bold decision to come back home, leaving my husband and continue with farming. Through perseverance and determination, I have overcome these challenges, and I am now much stronger.

Grace Malaicha stands in her field. (Photo: Christian Thierfelder/CIMMYT)

Today, I stand with pride in front of my CA plot, not only sustaining my family but also sending all my children to school. I now converted all my land to conservation agriculture, 3ha are under maize and 2ha under groundnuts. Beyond farming, I have investments in housing, claiming rentals in the nearby town of Salima to sustain my financial income and expand in farming.

I will continue on this path as I learned so much over the years and believe that CA may be the only climate-smart agriculture response in reach of smallholder farmers that everybody can apply, and I will continue to support others as a champion of CA.

Sustaining Conservation Agriculture initiatives: lessons from Malawi

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

Sub-Saharan Africa (SSA) has experienced the worst impacts of climate change on agriculture over the past decades and projections show such effects are going to intensify in the coming years. Diminished agricultural production has been the primary impact channel given the high reliance on rainfed agriculture in the region. Combined with a growing population, food security for millions of people is threatened.

Conservation Agriculture (CA) is a sustainable cropping system that can help reverse soil degradation, augment soil health, increase crop yields, and reduce labor requirements while helping smallholder farmers adapt to climate change. It is built on three core principles of minimum soil disturbance, crop residue retention, and crop diversification.

CA was introduced in southern Africa in the 1990s, but its adoption has been patchy and often associated with commercial farming. A group of researchers, led by Christian Thierfelder, principal cropping systems agronomist at CIMMYT, set out to understand the reasons why smallholder farmers adopt CA, or why they might not or indeed dis-adopt. Their results were published in Renewable Agriculture and Food Systems on March 12, 2024.

Conservation Agriculture plot. (Photo: CIMMYT)

“Conservation Agriculture can cushion farmers from the effects of climate change through its capacity to retain more soil water in response to high water infiltration and increased soil organic carbon. It is therefore a viable option to deal with increased heat and drought stress,” said Thierfelder. However, even with these benefits, adoption of CA has not been as widespread in countries like Malawi.

“There are regions within Malawi where CA has been promoted for a long time, also known as sentinel sites,” said Thierfelder. “In such places, adoption is rising, indicating that farmers are realizing the benefits of CA over time. Examining adoption dynamics in sentinel sites can provide valuable lessons on scaling CA and why some regions experience large rates of non- or dis-adoption.”

Thierfelder and his co-authors, Innocent Pangapanga-Phiri of the Center for Agricultural Research and Development (CARD) of the Lilongwe University of Agriculture and Natural Resources (LUANAR), and Hambulo Ngoma, scientist and agricultural economist at CIMMYT, examined the Nkhotakota district in central Malawi, one of the most promising examples of widespread CA adoption.

Total LandCare (TLC), a regional NGO working in Malawi has been consistently promoting CA in tandem with CIMMYT in the Nkhotakota district since 2005.

Results from both individual farmer interviews and focused group discussions revealed that farmers that implement CA saw higher yields per hectare than those who practiced conventional tillage practices. In addition, farmers using CA indicated greater resilience in times of drought, improved soil fertility, and reduced pest infestation.

Why adopt CA?

The primary factors enhancing CA adoption in the Nkhotakota district were the availability of training, extension and advisory services, and demonstration plots by the host farmers. Host farmers are farmers that have been trained by a TLC extension officer and have their own plot of land to demonstrate CA methods. In addition, host farmers train other farmers and share knowledge and skills through farmer field days and other local agricultural exhibitions.

“Social networks among the farmers serve a vital role in CA adoption,” said Ngoma. “Seeing tangible success carries significant weight for non-adopter farmers or temporal dis-adopters which can persuade them to adopt.”

Maize demonstration plot. (Photo: CIMMYT)

During focus group discussions facilitated by the authors, farmers indicated that demonstration plots also removed fear for the unknown and debunked some myths regarding CA systems, for example, that practitioners show ‘laziness’ if they do not conventionally till their land.

“This suggests that CA uptake could be enhanced with increased, targeted, and long-term promotion efforts that include demonstration plots,” said Ngoma.

Similarly, the longer duration of CA exposure positively influenced farmers’ decisions to adopt CA methods as longer exposure might allow farmers to better understand the benefits of CA practices.

Why not adopt CA?

Farmers reported socioeconomic, financial, and technical constraints to adopt CA. An example is that farmers might not have the labor and time available for weed control, a necessary step in the first few years after the transition to CA.

“Weed control is an important challenge during the early years of CA adoption and can be seen as the ‘Achilles heel’ of CA adoption,” said Thierfelder. CIMMYT scientists therefore focused a lot of research in recent years to find alternative weed control strategies based on integrated weed management (IWM) using chemical, biological, and mechanical control options.

Examining the stover in a maize plot. (Photo: CIMMYT)

In most cases, the benefits of CA adoption are seen only after 2 to 5 years. Having such a long-term view is not always possible for smallholder farmers, who often must make decisions based on current conditions and have immediate family obligations to meet.

As a contrast to adopters of CA, non-adopters reported a lack of knowledge about CA as a whole and a lack of specific technical knowledge needed to transition from more traditional methods to CA.

This scarcity of technical support is often due to the lack of strong agriculture extension support systems. Since CA adoption can be complex, capacity building of both farmers and extension agents can therefore foster adoption and implementation of CA. This reinforces that farmer-to-farmer approaches through host farmers could complement other sources of extension to foster adoption.

Next steps

The authors identified three policy recommendations to accelerate CA adoption. First, there is a need to continue promoting CA using farmer-centric approaches more consistently, e.g., the host farmer approach. Using a farmer-centered approach facilitates experiential learning and can serve as a motivation for peer-to-peer exchange and learning and can reduce misinformation. The host farmer approach can be augmented by mega-demonstrations to showcase CA implementation at scale. In addition, rapid and mass extension delivery can be enhanced by using digital technologies.

Second, CA promotion should allow farmers the time to experiment with different CA options before adoption. What remains unclear at the policy level is the types of incentives and support that can be given to farmers to encourage experimentation without creating economic dependence. NGOs and extension workers could help farmers deal with the weed pressure soon after converting from full to minimum tillage by providing herbicides and training.

Third, there is a need to build and strengthen farmer groups to facilitate easier access to training, to serve as conduits for incentive schemes such as payments for environmental services, and conditional input subsidies for CA farmers. Such market-smart incentives are key to induce initial adoption in the short term and to facilitate sustained adoption.

New technologies to mitigate impact of drought

Written by dmedina on . Posted in In the media.

CIMMYT is combating the effects of El Niño and climate change by fostering climate-smart agriculture, including drought-tolerant crops and conservation practices, to bolster smallholder farmer resilience and productivity. Through partnerships and sustainable farming innovations, CIMMYT aims to improve food security and adapt to environmental challenges, ensuring that advanced technologies benefit those most in need.

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A tale of two worlds: contrasting realities in southern and northern Zambia during El Niño

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

From the densely lush landscape of Zambia’s northern province to the arid terrain of the south, a stark reality unfolds, intensified by El Niño. Zambia’s agriculture faces contrasting realities yet potential lies in adaptive strategies, a diversified crop basket, and collaborative initiatives which prioritize farmers. Despite persistent challenges with climate variability and uneven resource distribution, the country navigates unpredictable weather patterns, emphasizing the intricate interplay between environmental factors and adaptation strategies.

A healthy maize and groundnut stand in the northern Province (left) and a wilting maize crop in the southern Province (right). These photos were taken two days apart. (Photo: Blessing Mhlanga/CIMMYT)

Unpacking El Niño’s impact in Zambia

El Niño presents a common challenge to both southern and northern Zambia, albeit with varying degrees of intensity and duration. The 2022/2023 season had above normal rainfall amounts, with extreme weather events, from episodes of flash floods and flooding to prolonged dry spells, especially over areas in the south. In the 2023/2024 season, the southern region has already experienced irregular weather patterns, including prolonged droughts and extreme temperatures, leading to water scarcity, crop failures, and significant agricultural losses. Although the growing season is nearing its end, the region has only received less than one-third of the annual average rainfall (just about 250 mm). Dry spells of more than 30 days have been experienced and, in most cases, coincide with the critical growth stages of flowering and grain-filling. A glance at farmers’ fields paints a gloomy picture of the anticipated yield, but all hope is not lost.

In contrast, the northern province stands out receiving above-average rainfalls beyond 2,000 mm, providing a different set of challenges for crop production. In this region, incidences of waterlogging are prominent although the effects are not as detrimental as the drought in the southern province. In general, crops in the northern province promise a considerable harvest as compared to the ones in the southern province.

Maize stover and its competing use

The scarcity of resources in southern Zambia extends beyond water availability, with the competition for maize stover, a valuable byproduct used for animal feed which can also be retained on the soil surface for fertility improvement and soil moisture conservation. With limited access to alternative fodder sources, farmers face challenges in meeting the nutritional needs of their livestock while maintaining soil fertility and conserving moisture. The struggle to balance the competing demands for maize stover underscores the complex dynamics of resource management in the region. This is further worsened by the low maize stover yield expected due to the dry conditions.

Implementing fodder trials, which include cultivating fodder crops like mucuna and lablab, intercropped or rotated with maize, offers a lifeline to farmers. While maize crops may wilt under the stress of El Niño-induced droughts, leguminous crops such as mucuna, lablab, cowpea, and groundnuts exhibit resilience, thriving in adverse conditions and providing a crucial source of food, feed, soil cover, and income for farmers. The ability of legumes to withstand environmental stressors highlights the importance of crop diversification in building resilience to climate change and ensuring food security in vulnerable regions.

Conversely, in northern Zambia, the abundance of agricultural resources allows for a more sustainable utilization of maize stover. Farmers have greater access to fodder alternatives and can implement integrated farming practices to optimize the use of crop residues. This enables them to mitigate the adverse effects of soil degradation and enhance livestock productivity, contributing to the resilience of their agricultural systems.

Use of more climate-smart crops

Drought-tolerant cassava grown in the northern province. (Photo: CIMMYT)

In southern Zambia, maize stands as the main crop, often supplemented with the integration of some leguminous crops integrated to some extent, to diversify the agricultural landscape. However, the relentless and longevity grip of El Niño has taken a negative toll on maize production, despite efforts to cultivate drought-tolerant varieties. As the dry spell persists, maize plants at the critical tasseling and silking stage face an uphill battle, as the dry and hot air has adversely impacted pollen and silk development.

The dissimilarity with the northern province, where cassava thrives from abundant water, is striking. This resilient crop, known for its drought tolerance, presents a promising alternative for farmers in the southern province grappling with erratic rainfall patterns. As climate change continues to challenge traditional agricultural practices, exploring resilient crops like cassava may offer a lifeline for communities striving to adapt and thrive amidst adversity.

In response to these radically different realities, the Sustainable Intensification of Farming Systems (SIFAZ) project, a collaborative effort of CIMMYT with FAO, the Ministry of Agriculture in Zambia, and the CGIAR Initiative on Diversification in East and Southern Africa, also known as Ukama Ustawi, have jointly promoted sustainable intensification practices to enhance the resilience of smallholder farmers.

The SIFAZ project is designed around the idea that strip crops and intercrops can add nutritional and economic value to Conservation Agriculture (CA) systems for smallholder farmers in Zambia. While traditional yield metrics provide some insight across the several intercropping treatments being tested on-farm, the true benefits of these cropping systems extend beyond mere output. SIFAZ recognizes the diversification synergy, emphasizing that “two crops are better than one.”

However, the outcomes of the SIFAZ project and the CGIAR Initiative on Diversification in East and Southern Africa have varied over the years between the two regions, reflecting the discrepancy in their agricultural landscapes.

Notably, regional differences in the adoption and success of these cropping systems have become apparent. In the northern province, crop-centric approaches prevail, leading to a higher concentration of successful crop farmers. Meanwhile, in the southern province, mixed systems that incorporate mixed crop-livestock systems achieve desirable effects. These findings highlight the importance of tailoring agricultural interventions to suit the specific needs and conditions of diverse farming communities.

Navigating the complex challenges of climate change requires a multifaceted approach that acknowledges the unique realities of different regions. By embracing adaptive strategies, harnessing indigenous knowledge, and fostering collaborative partnerships, Zambia can forge a path towards a more resilient and sustainable agricultural future, where farmers thrive despite the uncertainties of a changing climate.

Study links climate change with wheat blast; warns crop yield could drop by 75% in South America, Africa by 2050

Written by dmedina on . Posted in In the media.

CIMMYT’s latest study reveals climate change could significantly expand wheat blast’s reach by 2050, threatening a 13% drop in global wheat production. The research highlights the critical need for developing resistant wheat varieties and adapting farming practices to counter this growing threat to food security.

Read the full story.

Reaching farmers in Zambia

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

Farmers are guided on how to use Atubandike and VIAMO. (Photo: CIMMYT)

It is challenging to disseminate information across far-flung areas of rural Zambia as extension officers must travel vast distances to reach farmers. The Southern Africa Accelerated Innovation Delivery Initiative (AID-I) MasAgro Africa Rapid Delivery Hub, managed by CIMMYT and funded by the United States Agency for International Development (USAID) helps alleviate these issues by engaging with existing mobile phone networks to reach farmers with agronomic information, weather data, and soil information.

To introduce farmers to these specific tools: Atubandike and VIAMO, AID-I conducted a community sensitization and engagement exercise in Zambia. Atubandike emphasizes farmer learning and feedback using mobile phones for disseminating knowledge about the new generation of drought-tolerant varieties, sustainable intensification practices, and collecting farmer feedback to enable demand-driven delivery under AID-I. VIAMO, accessible via a basic mobile phone, provides agronomic information for every farmer in a specific area. The platform comes in different languages and farmers access information on various crops such as maize, beans, and groundnuts in their native language, provide feedback on information content, and connect with other farmers.

An AID-staff facilitates a training session. (Photo: Nancy Malama/CIMMYT)

In Choma District, Morgan Katema, who provides extension services to farmers, explained that going digital is one way of reaching farmers through technology to ensure that all farmers have access to extension services. “In this case, lessons will be available through mobile phones and farmers will ask agriculture-related questions and get a response. This is a good initiative because farmers can access information on the spot instead of waiting for an extension officer to reach them, and information can be accessed after working hours, and the VIAMO initiative will help us overcome the challenge of long distances between farmers as we will no longer need to travel long distances,” Katema said.

Judith Simuliye, a farmer who grows maize and groundnuts, said, “I was told about this meeting by the camp officer, and I am happy to learn about this project. I have learned how to manage my crop by using the right seed varieties and how to space the crops.”

During the meeting, two community facilitators were selected through a voting process, after farmers nominated community members who are literate, trustworthy, energetic, and able to use a smart phone. Facilitators register farmers on the VIAMO platform, assist them in accessing the information they require, and support them in their learning journey.

Namasumo Rithay, a farmer in the village of Kalalasa, said, “Mobile phone access to extension services has come at the right time. We have faced a lot of challenges with the poor rain patterns and pests. Through this meeting organized by AID-I, we have learned how we can obtain information to mitigate these challenges through our mobile phones.”

A participant casts her vote. (Photo: Nancy Malama/CIMMYT)

An additional community meeting was held in the village of Namuswa and was attended by 150 farmers. AID-I and Atubandike Research Associate, Brian Mpande, informed farmers that AID-I, with the assistance from VIAMO, will help them overcome the challenges of climate change by delivering timely and useful information via their phones. 

CIMMYT joins global efforts to curb greenhouse emissions and strengthen food systems

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

The 2023 UN Climate Change Conference (COP 28) took place from November 30 to December 12, 2023, in Dubai, UAE. The conference arrived at a critical moment when over 600 million people face chronic hunger, and global temperatures continue to rise at alarming rates. CIMMYT researchers advocated for action into agriculture’s mitigating role in climate change, increasing crop diversity, and bringing the tenets of sustainability and regenerative agroecological production systems to a greater number of farmers.

Directly addressing the needs of farmers, CIMMYT proposed the creation of an advanced data management system, training, and protocols for spreading extension innovations such as digital approaches and agronomic recommendations to farmers via handheld devices to harmonize the scaling in Africa of regenerative agriculture—diverse practices whose outcomes include better productivity and environmental quality, economic feasibility, social inclusivity, and nutritional security.

CIMMYT presented research showing that in times of fertilizer shortages, targeting nitrogen supplies from inorganic and organic sources to farms with minimal access to nitrogen inputs can improve nitrogen-use efficiency and helps maintain crop yields while limiting harm from excesses in fertilizer use. Examining how food production is driving climate change, CIMMYT promoted ways to lessen climate shocks, especially for smallholder farmers who inordinately suffer the effects of climate change, including rising temperatures and extended droughts. Improved, climate-resilient crop varieties constitute a key adaptation. Boosting farmer productivity and profits is a vital part of improving rural livelihoods in Africa, Asia, and Latin America.

When asked about CIMMYT’s contribution to COP 28, Bram Govaerts, CIMMYT’s director general, highlighted the inclusion of agriculture in the COP28 UAE Declaration on Sustainable Agriculture, Resilient Food Systems, and Climate Action as part of various potential solutions for climate change, an effort that CIMMYT supported through advocacy with leaders and government officials.

“Our participation addressed some of the pressure points which led to this significant recognition. It further cleared our role as an active contributor to discussions surrounding the future of food and crop science,” said Govaerts.

Unlocking the potential of crop genetic diversity

“The diversity stored in today’s gene banks contains the potential to unlock genes that can withstand drought and warmer temperatures,” said Sarah Hearne, CIMMYT’s director of Genetic Resources at a side-event: Crop diversity for climate change adaptation and mitigation contributing to resilient and nature positive futures for farmers globally.

Sarah Hearne presents on the potential of crop diversity to help combat climate change impacts on agrifood systems. (Photo: Food Pavilion/COP 28)

Hearne explained the process that characterizes plant DNA to identify the ideal, climate-adaptable breeding traits. This classification system also opens the door for genetic modeling, which can predict key traits for tomorrow’s climatic and environmental conditions.

“Our thinking must shift from thinking of gene banks to banks of genes, to make vibrant genetic collections for humanity, opening up genetic insurance for farmers,” said Hearne.

Working towards a food system that works for the environment

With an increased strain on food production, sustainability becomes critical for long-term human and environmental health. Sarah Hearne and Tek Sapkota, agricultural systems and climate change senior scientist, from CIMMYT participated in a panel discussion: Responsible consumption and sustainable production: pathways for climate-friendly food systems. They shared how progress in genetic innovation and fertilizer use can contribute to sustainable consumption and a resilient food system.

Fertilizer use remains highly skewed, with some regions applying more fertilizer than required and others, like sub-Saharan Africa, not having sufficient access, resulting in low crop yields. However, to achieve greater food security, the Global South must produce more food. For that, they need to use more fertilizer. Just because increased fertilizer use will increase greenhouse gases (GHGs) emissions, institutions cannot ask smallholder farmers not to increase fertilizer application. Increased GHGs emission with additional fertilizer application in low-input areas can be counterbalanced by improving Nutrient-Use Efficiency (NUE) in high-output areas thereby decreasing GHGs emissions. This way, we can increase global food production by 30% ca with the current level of fertilizer consumption.

Tek Sapkota speaks on how sustainable and efficient fertilizer use can contribute to a resilient food system. (Photo: Food Pavilion/COP 28)

“This issue needs to be considered through a holistic lens. We need to scale-up already proven technologies using digital extensions and living labs and linking farmers with markets,” said Sapkota.

On breeding climate-resilient seeds, Hearne addressed whether farmers are accepting new seeds and how to ensure their maximum adoption. Hearne detailed the partnership with CGIAR and NARS and the numerous technologies advancing the selection of ideal breeding traits, considering shortened breeding cycles, and responding to local needs such as heat or flood tolerance, and traditional preferences.

“Drought-tolerant maize, developed by CIMMYT and the International Institute of Tropical Agriculture (IITA), has benefited over 8 million households in sub-Saharan Africa, which proves that farmers are increasingly receptive to improved seeds. With a better selection of appropriate traits, we can further develop and distribute without yield penalties,” said Hearne.

Regenerative and agroecological production systems

Researchers have studied regenerative and agroecological production systems for decades, with new and old research informing current debates. These systems restore and maintain ecosystems, improving resource use efficiency, strengthening resilience, and increasing self-sufficiency. In his keynote presentation, Sapkota presented 3 examples of regenerative agriculture and agroecological systems:  conservation agriculture, cropping system diversification and site-specific nutrient management and their impact on food production, climate change adaptation and mitigation.

“As the science continues to develop, we need to harness digital capacity to co-create sustainable solutions alongside local, indigenous knowledge,” said Sapkota. “While we should continue research and innovation on cutting-edge science and technologies, we should also invest in knowledge sharing networks to spread access to this research; communication is fundamental for further adoption of these practices.”