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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.

Opinion: Aid competes with long-term solutions to Sudan’s hunger crisis

Written by dmedina on . Posted in Blogs, Director General's corner.

This terrible season of global conflict just hit a particularly grim milestone in Sudan with the one-year anniversary of the violent civil war last month. One consequence of the conflict is that Sudanese families are beginning to starve — and while emergency food aid is needed, so is investment in longer-term food production.

Political, economic, and social upheaval in the country has displaced over 8 million people and left nearly 25 million people in need of urgent food assistance, including more than 14 million children. The anniversary saw major donors mark the day with more than $2 billion in new aid pledges.

While these pledges are important, the international community also needs to rethink some of its aid strategies. Emergency food assistance for those at immediate risk of starvation is understandably a high priority now, but restoring food production within the country is just as important — otherwise donors risk racing from crisis to crisis and always falling short. It is time to break away from an aid-dependency model and invest directly in farmers.

In fact, challenges to Sudan’s agriculture were likely a contributing factor to the current conflict. The livelihoods of most people in Sudan depend on the agri-food sector, which has been under pressure in recent years. Economic stagnation, weather shocks, land conflicts, high inflation, and health crises made 9.8 million Sudanese severely food-insecure by 2021.

Sudan’s already low-yielding cropping system has been hit by global tightening in fertilizer supplies. The livestock sector represents 60% of Sudan’s agricultural GDP, and has been suffering from diminished rangelands, water shortages, flood events, and lack of animal health services.

Sudan is not alone, and it’s important that the donor community understand how. Eight out of 10 of the world’s worst food crises are driven by war, persecution, and conflict, in places such as Sudan, Yemen, the Palestinian territories, Myanmar, and the Democratic Republic of Congo. The confluence of conflict, state fragility, climate change, and poverty is already overwhelming the international community’s ability to respond to escalating humanitarian needs. The international community has to put more emphasis on anticipatory action, because reaction is just not going to be enough anymore.

The need to get ahead of the growing scale of humanitarian disasters has provoked new thinking and partnerships among research, development, and humanitarian organizations, such as ours.

We are investing in better risk assessment, preparation for future food crises, and accelerated learning about how climate change is affecting agricultural productivity and production. The significant resources and expertise of the international research-for-development community can make humanitarian responses in fragile and conflict-affected states more effective and optimal.

Sudan will hopefully show how this kind of intervention can work. Our organizations are part of an international effort to partner with Sudan’s farmers to improve livelihoods in the country. We had started operating across six Sudanese states just before the outbreak of the current conflict, training farmers on how to manage their crops, livestock, and natural resources, and supporting them to access drought-tolerant seeds, with a specific focus on last-mile delivery to women and youth. When the civil war started last year, we quickly pivoted to supporting farmers in safer locations and focusing on the needs of internally displaced people in new areas.

Make no mistake: Implementing these interventions in the current conditions is a heavy lift. Roadblocks, skyrocketing fuel costs, denied travel permits, and breakdowns in telephone service all impede communication with farmers and the delivery of seeds, tools, and training. The threat of emergent violence is driving displacement and staff turnover.

Nonetheless, our coalition has continued to operate. Local partners, including cooperatives, microfinance institutions, and private sector players have shown themselves to be especially effective as the conflict has escalated. These cooperatives, strengthened by farmer training, enable farmers to improve their production and incomes by pooling their resources.

For example, the 72-member Al Etihad women-led farmer cooperative in South Kordofan has initiated multiple enterprises, guided by a structured business plan that steers them toward a more empowered role in local food value chains.

Through the program, last-mile seed retailers have helped nearly 6,000 farmers access agronomic advisories and seeds at a subsidized price. This has empowered farmers like Fatna Mohammed, a 48-year-old widow and mother of three, to build a better livelihood from her small-scale groundnut and vegetable production. She reports that an increased harvest of 18 sacks of groundnut, up from five sacks, enabled her to invest in her farm and better feed her family.

This unique last-mile delivery network, carefully tailored to local realities and drivers, is helping Sudanese communities to survive the current crisis and it can be activated for the rebuilding period — which cannot come soon enough.

Sudan, as with many war-affected nations, is caught in a doom loop of insecurity: Any restoration of political stability requires economic activity, but any economic activity requires political stability. Both depend on physical security, which is hard to achieve without political stability and economic activity.

While a cessation of violence and the restoration of civil order is ultimately up to the parties to the conflict, a direct, international investment in farmers is a way to potentially break the cycle, simultaneously addressing the growing hunger crisis and helping build the preconditions for peace.

Read the original piece on Devex

How improved seeds empower women farmers in South Kordofan

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

Fanta Mohamed, a 48-year-old widow with three children, lives in Aldagag village in South Kordofan. For years, Fanta has worked on her small farm to feed her children. Fanta used local seeds, and her agricultural yield was very poor. It made her wonder where she was going wrong. Fanta, like thousands of women farmers in remote and hard-to-reach areas of South Kordofan in central Sudan, has limited access to quality inputs and agricultural extension services.

In South Kordofan, Mercy Corps, aided by USAID-funded Sustainable Agrifood Systems Approach for Sudan (SASAS), trained 15 local farmers and producers in the Farmer Field School methodology and climate-smart agriculture with the support of officials from the State Ministry of Agriculture.

“At SASAS, we work to empower women farmers, especially those who live in remote areas such as South Kordofan. We help them with agricultural inputs such as improved seeds, new agricultural skills, and techniques to increase their production and help enhance food security amid the looming food crisis in Sudan,” said Abdelrahman Kheir, SASAS chief of party.

Women farmers apply new agricultural techniques in South Kordofan. (Photo: CIMMYT)

To address the challenges of poor seed quality, Mercy Corps contracted local supplier Alzahra Seed for Trade to sell improved seeds at a subsidized price and expand access by establishing last-mile seed retail networks. Alzahra Seed for Trade would also deliver agronomic extension training to farmers in remote villages such as Aldagag.

Fanta recalls how she and other women farmers came to know about the improved seeds. “We were at a coffee gathering at my neighbor’s house, when one of the women told us that Alzahra Seed for Trade’s retail agent had brought improved seeds from Dilling town for sale. We were not even aware of the existence of improved seeds,” she said.

With accessible and affordable improved seeds in Aldagag, Fanta was one of the smallholder farmers who bought seeds from a retailer in her village. She bought groundnut and vegetable seeds and received basic agronomic extension training from the retailer who offered it as an embedded service. In addition to getting access to improved seeds, Fanta was visited by an extension officer from Alzahra Seed for Trade.

Women farmers participate in an agronomic extension training. (Photo: CIMMYT)

Fanta recalls how she managed her farm before she was introduced to improved seeds. “In the seasons before I got the training, my farm looked disorganized. Like other farmers in my area, I didn’t care about the distances between the plants. Local seeds yielded about four or five sacks of groundnut per one feddan (unit of area in Sudan),” she shared. Post training, Fanta planted two feddans of groundnut using the improved seeds and followed the agronomic guidance. “I harvested 18 sacks from the two feddans–much higher than before.”

Increased income provides women farmers with greater financial resources, and many of them feel empowered. “Women famers in my area who have used improved seeds and followed new agricultural techniques have become stronger and feel confident enough to have a voice within our community,” said Fanta.

A sustainable agrifood systems approach in conflict-ridden Sudan

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

Sudan, the third largest country in Africa, has long been an epicenter of food production, due to its fertile lands and rich history of agricultural cultivation. But modern Sudan faces chronic food insecurity rooted in social and geopolitical challenges. A situation that has been exacerbated by the outbreak of war on April 15, 2023. The armed conflict has caused a sudden, further decline in agricultural productivity, displacing large populations and pushing millions of Sudanese into high levels of malnutrition and food insecurity.

In response to this crisis, CIMMYT, through the USAID-funded Sustainable Agrifood Systems Approach for Sudan (SASAS), is supporting agricultural development by creating robust and sustainable food production systems. SASAS adapts a modular and multi-crop approach to implement an integrated agrifood system that underpins food security, employment, and equity.

As the planting season of 2024 approaches, the project strives to strengthen food production to support the people of Sudan during these challenging times.

Experts speak: SASAS focuses on five key areas

Abdelrahman Kheir, SASAS chief of party, highlights how the agricultural innovations of the project are impacting multiple regions in Sudan. The focus of the project is on five broad intervention areas: promoting agricultural production for smallholder farmers, improving value chains and business development, supporting community management of natural resources, and providing horticultural and livestock services such as vaccination campaigns.

Further in the video, Murtada Khalid, country coordinator for Sudan, explains how the SASAS Food Security Initiative (SFSI) will provide 30,000+ farmers with a diversified package of four inputs: fertilizer, seeds, land preparation, and agricultural advisory services, to prepare for the upcoming 2024 sorghum and groundnut planting season. SFSI is a critical element of SASAS that uniquely provides agricultural development aid during a time of conflict to directly improve the food security situation in Sudan.

How women farmers benefit from SASAS

SASAS works directly with women farmers and pastoralists to ensure an equitable approach to food security in the country. Hear farmers from the women-led El-Harram Agricultural Cooperative in Kassala, Sudan, explain how SASAS has positively impacted their lives and families.

Ali Atta Allah, a farmer in Kassala expresses her gratitude for SASAS support. “They provided us with seeds including jute, mallow, okra, and sweet pepper. We planted them, and they thrived.” Ali highlighted the financial gains—a bundle of jute mallow sells for 500 Sudanese Pound (SDG). The income from the entire area amounts to 200,000 to 300,000 SDG. “The seeds provided by SASAS are of superior quality,” she affirmed.

Aziza Haroun from El-Ghadambaliya village, shares her story of how improved seeds provided by SASAS activities helped double her yields compared to previous years. “We used to farm in the same land and the yield was poor. Mercy Corps, a SASAS partner, introduced us to a new method of planting legumes as natural fertilizer. Now our yield has increased significantly,” she said.

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

Harnessing econometric and statistical tools to support climate-resilient agriculture

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

Globally, climate extremes are adversely affecting agricultural productivity and farmer welfare. Farmers’ lack of knowledge about adaptation options may further exacerbate the situation. In the context of South Asia, which is home to rural farm-based economies with smallholder populations, tailored adaptation options are crucial to safeguarding the region’s agriculture in response to current and future climate challenges. These resilience strategies encompass a range of risk reducing practices such as changing the planting date, Conservation Agriculture, irrigation, stress-tolerant varieties, crop diversification, and risk transfer mechanisms, e.g., crop insurance. Practices such as enterprise diversification and community water conservation are also potential sector-specific interventions.

Atlas of Climate Adaptation in South Asian Agriculture (ACASA) aims to identify hazard-linked adaptation options and prioritize them at a granular geographical scale. While doing so, it is paramount to consider the suitability of adaptation options from a socioeconomic lens which varies across spatial and temporal dimensions. Further, calculation of scalability parameters such as economic, environmental benefit, and gender inclusivity for prioritized adaptation are important to aid climatic risk management and developmental planning in the subcontinent. Given the credibility of econometric and statistical methods, the key tenets of the approach that are being applied in ACASA are worth highlighting.

Evaluating the profitability of adaptation options

Profitability is among the foremost indicators for the feasible adoption of any technology. The popular metric of profitability evaluation is benefit-to-cost ratio. This is a simple measure based on additional costs and benefits because of adopting new technology. A benefit-to-cost ratio of more than one is considered essential for financial viability. Large-scale surveys such as cost of cultivation and other household surveys can provide cost estimates for limited adaptation options. Given the geographical and commodity spread, ACASA must resort to the meta-analysis of published literature or field trials for adaptation options. For example, a recent paper by International Food Policy Research Institute (IFPRI) based on meta-analysis shows that not all interventions result in a win-win situation with improvements in both tradable and non-tradable outcomes. While no-till wheat, legumes, and integrated nutrient management result in an advantageous outcome, there are trade-offs between the tradable and non-tradable ecosystem services in the cases of directed seed rice, organic manure, and agroforestry2.

Quantification of adaptation options to mitigate hazards

Past studies demonstrate the usefulness of econometric methods when analyzing the effectiveness of adaptation options such as irrigation, shift in planting time, and crop diversification against drought and heat stress in South Asia. Compared to a simple cost-benefit approach, the adaptation benefits of a particular technology under climatic stress conditions can be ascertained by comparing it with normal weather conditions. The popular methods in climate economics literature are panel data regression and treatment-based models. Subject to data availability, modern methods of causal estimation, and machine learning can be used to ascertain the robust benefits of adaptation options. Such studies, though available in literature, have compared limited adaptation options. A study by the Indian Council of Agricultural Research-National Institute of Agricultural Economics and Policy Research (ICAR-NIAP), based on ‘Situation Assessment Survey of Agricultural Households’ of National Sample Survey Office (NSSO), concluded that though crop insurance and irrigation effectively improve farm income and reduce farmers’ exposure to downside risk, irrigation is more effective than crop insurance1.

Statistical models for spatial interpolation of econometric estimates

Since ACASA focuses on gridded analysis, an active area of statistical application is the spatial interpolation or downscaling of results to a more granular scale. Many indicators used for risk characterization are available at coarser geographical units or points from surveys. Kriging is a spatial interpolation method where there is no observed data. Apart from spatial interpolation of observed indicators, advanced Kriging methods can be potentially used to interpolate or predict the estimates of the econometric model.

ACASA’s approach involves prioritizing adaptation options based on suitability, scalability, and gender inclusivity. Econometric and statistical methods play a crucial role in evaluating the profitability and effectiveness of various adaptation strategies from real world datasets. Despite challenges such as limited observational data and integration of econometric and statistical methods, ACASA can facilitate informed decision-making in climate risk management and safeguard agricultural productivity in the face of climatic hazards.

1 Birthal PS, Hazrana J, Negi DS and Mishra A. 2022. Assessing benefits of crop insurance vis-a-vis irrigation in Indian agriculture. Food Policy 112:102348. https://doi.org/10.1016/j.foodpol.2022.102348

2 Kiran Kumara T M, Birthal PS, Chand D and Kumar A. 2024. Economic Valuation of Ecosystem Services of Selected Interventions in Agriculture in India. IFPRI Discussion Paper 02250, IFPRI-South Asia Regional Office, New Delhi.

Blog written by Prem Chand, ICAR-NIAP, India and Kaushik Bora, BISA-CIMMYT, India

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

Greater successes through NARS partnerships

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

Map: BISA works with National Agricultural Research Systems (NARS) of South Asia to develop ACASA.

Atlas of Climate Adaptation in South Asian Agriculture (ACASA) is different from many projects supported by our team. I would love to dive into the promising features of the ACASA platform and the exciting technical advances being made, but I want to focus here on how the Borlaug Institute for South Asia (BISA) has organized this program for greater and longer-term impact.

BISA is a strong regional partner and is the lead institution for the ACASA program. In fact, we could have simply asked BISA to build the ACASA platform and known they would make a great technical product. However, our goal is not just to have great technical products, but also to improve the lives of small-scale producers. For any great technical product to deliver impact, it must be used.

From day one, the ACASA program has not just kept the users’ needs in mind, indeed they have kept the users themselves engaged on the project. By establishing strong, financially supported partnerships with the National Agricultural Research Systems (NARS) in Bangladesh, India, Nepal, and Sri Lanka, they are achieving four key outcomes, among many others:

  1. Benefit from local expertise regarding national agricultural practices, climate risks, and solutions
  2. Leverage NARS connections to national and subnational decision makers to inform product requirements
  3. Establish national ownership with a partner mandated to support users of the product
  4. Strengthen climate adaptation analytics across South Asia through peer-to-peer learning.

These outcomes lead to more accurate and appropriate products, user trust, and the long-term capacity to maintain and update the ACASA platform. The latter being essential given the constantly improving nature of our understanding of and predictions around climate and agriculture.

If this model of working has such advantages over “if you build it, they will come”, you might wonder why we do not use it in all cases. This approach requires divergence from business-as-usual for most researchers and is not without a cost. The BISA team are not only putting deep emphasis on the technical development of this product, but they are also spending considerable time, effort, and budget to create a program structure where the NARS are catalytic partners. The NARS teams are empowered on the project to contribute to methodologies used beyond their national boundaries, they have the task of making the best data available and validating the outputs, the responsibility of understanding and representing stakeholder requirements, and the ownership of their national platform for long-term use. BISA has developed a structure of accountability, provided funding, facilitated team-wide and theme-specific workshops, and shared decision-making power, which all presents additional work.

In the end, we encouraged this approach because we see too many decision support tools and platforms developed by international researchers who merely consult with users a few times during a project. These efforts may result in building captivating products, meeting all the needs brainstormed by the research team, but their future is sitting in a dusty (and unfortunately crowded) corner of the internet. While this approach seems fast and efficient, the efficiency is zero if there is no value gained from the output. So, we look for other ways to operate and engage with partners, to work within existing systems, and to move beyond theoretically useful products to ones that are used to address needs and can be evolved as those needs change. BISA has been an exemplary partner in building and supporting a strong ACASA team, and we are eager to see how each NARS partner leverages the ACASA product to generate impact for small-scale producers.

Tess Russo is a senior program officer at the Bill & Melinda Gates Foundation, based in Seattle, United States.  

Women farmers enhance agricultural production in conflict-torn Sudan

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

Women farmers show their harvested vegetables, Kassala, East Sudan. (Photo: CIMMYT)

The ongoing conflict in Sudan continues to contribute to a food crisis threatening the lives of over 18 million people. Farmers, especially smallholders and vulnerable women, are facing extraordinary challenges in obtaining needed agricultural inputs, and access to markets is diminishing.

In Kassala State, East Sudan, which hosts hundreds of thousands of people displaced by ongoing armed conflict including Ethiopian and Eritrean refugees, the USAID-funded Sustainable Agrifood Systems Approach for Sudan (SASAS) is working with women farmers to prepare and safeguard the upcoming growing season. This work is critical to help meet the unprecedented demand for vegetables in the region and achieve sustainable development goals.

“At SASAS, we are working to empower women farmers, especially those who lost their traditional livelihood resources, and help them to acquire skills and techniques to increase their agricultural production to help improve food security,” said Abdelrahman Kheir, SASAS chief of party in Sudan.

Women farmers participate in a training on vegetable growing, Kassala, East Sudan. (Photo: CIMMYT)

SASAS works with the El-Haram Agricultural Cooperative, a women-led farmers group, based in Kassala, to help increase vegetable production. SASAS trains El-Haram Agricultural Cooperative members on modern agricultural techniques, irrigation techniques, pest control, and organic fertilizers to increase crop yields.

“SASAS trained us on new ploughing and land preparation techniques, which we never used before and then provided us with improved seeds of okra, tomato, chili, and mallow, and encouraged us to use legumes as organic fertilizers,” said Imtithal Atta, a farmer from the Alsawagi neighborhood in Kassala. “In the past, I used to buy vegetable seeds from the local market, but they grow poorly. The improved seeds given by SASAS are germinating extremely well. My income has doubled; I almost made $250 from my first harvest of vegetables.”

The ongoing conflict has interrupted traditional livelihood activities in many regions. In some areas, farmers missed the harvest, leading to a dramatic reduction in agricultural production and debilitating price increases for cereals and vegetables. SASAS is helping to restore agricultural production in key growing regions by ensuring farmers have timely access to necessary production inputs, including fertilizer and climate-adapted seeds.

SASAS staff examine the germination of vegetables in women-led farms, Kassala, East Sudan. (Photo: CIMMYT)

“For years, I have worked tirelessly on my family’s farm, season after season, without earning a good income, and I was not sure what was wrong. Luckily, this cultivation season, SASAS trained us on new ploughing techniques to better prepare the land for cultivation, using organic fertilizers to enrich the soil and offering us improved vegetable seeds,” said Fatima Ahmed, a woman farmer and a mother of three children from the El-Haram Agricultural Cooperative.

“Thanks to SASAS, both the quality and the quantity of my agricultural products have greatly improved. I am so happy that I got some good money from my vegetables. I feel empowered and now I can have a strong voice within my community. I am more confident and gained the courage to participate in important decision-making processes within my family and express my opinions without fear,” said Ahmed.

A critical part of SASAS are efforts to diversify food production in Kassala, where malnutrition among children under 5 years old, and breastfeeding, lactating, and pregnant women, are prevalent.

Women farmers process their onions, Kassala, East Sudan. (Photo: CIMMYT)

“I used to go to the main market in town to get my daily needs from vegetables, but now I buy what I need from women farmers closer to my home. They are selling me fresh vegetables at a good price. The taste of the vegetables is quite fresh and healthy, this is something I have been missing for a long time,” said Hanan, a resident of Alswagi.

“The vegetables produced by members of the El-Haram Agricultural Cooperative has led to an increased supply in the local market. I buy vegetables from women farmers and sell them here in the neighborhood market. This has cut my transportation cost as I used to buy vegetables from markets a long distance away,” said Osman, vegetables trader, also in Alswagi.

Flowers, learning, and a gender-based approach

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

Gender and social inclusion are fundamental themes for the Latin American regional initiative AgriLac Resiliente, which is why numerous regions bordering Guatemala and Honduras have been selected to implement priority actions with a gender approach.

In order to integrate a guideline that clears up why gender and social inclusiveness are relevant matters and incorporate it in all InnovaHubs activities in Guatemala and Honduras, social inclusion and gender experts from AgriLac have implemented a participatory process in the South Pacific and Chiapas Hubs to gather information and document research results to facilitate the Hub model for replication, developed by CIMMYT in Mexico and other countries.

In this way, Alejandrina Garcia in Oaxaca, Alejandro Ramirez in Chiapas, and Angela Meentzan, head of the AgriLac Gender and Social Inclusion Team, conducted individual and group interviews to learn how the different actors involved in the hubs perceived their own participation: farmers, workers, managers, and staff of the hubs, as well as partners who participated in this participatory process.

There are numerous and successful cases of rural women’s participation in the centers of Oaxaca and Chiapas that have been collected in this process. “It is expected that these case studies will become part of an annex to the guideline, just to illustrate why the participation of rural women is essential in their own vision,” said Meentzen, who highlights the case of Juanita, a Tzeltal woman from La Providencia in Ocosingo, Chiapas, Mexico.

“About five years ago, I started working alongside CIMMYT. Before we knew them, we were only planting maize and beans, but then we couldn’t produce any more. The plants stopped growing, and we had a lot of problems with pests, so we used to burn all the stubble. When the engineers came, they invited us to join them. At first, we weren’t that interested, but we let them teach us. They taught us how to grow other crops like sunflowers, peanuts, vegetables, and fruit trees like lemon and soursop,” said Juanita.

“Now we don’t burn all the stubble and we have crops all year round. We also grow other types of plants and use a lot of organic products that they taught us how to prepare. Our production has increased, and we sell more and more at the market. My daughter and I take care of the sale of the crops: beans, corn, vegetables, squash, corn, and flowers; the latter have given us such good results that we have earned some extra money,” said Juanita.

“The benefits we got from our land allowed us to give our children a future. Some of them have graduated from college and have jobs; others are about to graduate, but they have all learned to work the land. It feels a little harder, but I have been able to take care of both: my family and the land. I don’t know how I did it, but I did it,” said Juanita proudly, noting that the scientific knowledge gained from the research platform and Hub modules has had a real and positive impact on her and her family.

Photo: Juanita, a Tzeltal woman from La Providencia in Ocosingo, Chiapas, stands in her field. (Garcia, Ramirez and Meentzen/CIMMYT) 

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.

Digging in the Dirt: Detailed soil maps guide decision-making, from the field to the policy room

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

When a non-farmer looks upon a field, they might just see it as an expanse of dirt and give no more thought to it. But to a farmer, that dirt is soil, the lifeblood of agriculture. Among other things, soil delivers necessary nutrients to crops, allowing them to grow and flourish.

About 95% of the food consumed around the world grows from soil, which is rapidly deteriorating because of unsustainable human activity. Around 33% of all soils around the world are degraded, meaning they can no longer sustain the same level of agricultural activity. This leads to lower crop yields, which potentially leads farmers to increase their use of fertilizer to overcome the damaged soil. But increased nitrogen fertilizer use has profound climate change effects, as poor fertilizer management, including overuse, can lead to nitrous oxide (a greenhouse gas) leaking into the air and nitrates into groundwater, rivers, and other water systems.

Sampling points in the state of Celaya, Guanajuato Mexico. (Photo: CIMMYT)

An important implement in the effort to preserve soil fertility is the practice of soil mapping, a process which produces detailed physical and chemical soil properties within a region. Things like the amount of nutrients, acidity, water conductivity, and bulk density, help guide decision making from individual farmers all the way to regional and national stakeholders.

The Sustainable Productivity Growth Coalition, a United Nations initiative which aims to accelerate the transition to more sustainable food systems through a holistic approach to productivity growth to optimize agricultural sustainability, featured soil mapping as an innovative, evidence-based approach for accelerating sustainable productivity growth in its 2023 report.

A global soil mapping initiative is underway led by the Food and Agriculture Organization of the United Nations (FAO) and the Global Soil Partnership with important contributions from CIMMYT scientist working in Mexico.

“Soil mapping of an agricultural region for chemical and physical soil properties offers a range of benefits that can significantly improve agricultural practices, land management, and overall productivity,” said Ivan Ortiz Monasterio, CIMMYT principal scientist.

Map for Phosphorus Bray 1. (Photo: CIMMYT)

Soil maps = blueprints

Using up-to-date soil information at the national scale can help to plan agricultural and land planning interventions and policies, by excluding areas with higher carbon content or fertility from urbanization plans, or by planning the implementation of irrigation schemes with high-quality water in salt-affected areas.

For farmers, there are many benefits, including the creation of nutrient management plans, which are perhaps the most important. These plans guide decisions about application rates and timing of inputs like fertilizers, help avoid over-application, and reduce the risk of runoff and pollution. This supports sustainable agriculture while reducing costs and minimizing nutrient pollution.

Map for zinc. (Photo: CIMMYT)

“There are many other benefits,” said Ortiz Monasterio. “From improved irrigation management, to informed crop decisions, to things like climate resilience because more fertile soils are better able to cope with the challenges of climate variation.”

Collaboration across the seed system value chain

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

Collaboration among diverse seed value chain actors is essential to improving seed systems for dryland crops in Kenya and contributing to food security in an era marked by climate change. This holistic approach is essential at a time when sustainable agricultural practices are increasingly becoming pertinent in semi-arid and high-potential areas, as emphasized by participants attending a multi-stakeholder seed systems meeting in Nairobi.

The Kenya Drylands Crop Seed Systems Workshop in February 2024 brought together various stakeholders from the agricultural sector, including farmers, policymakers, researchers, and the private sector. The main aim of this meeting was to identify practical ways to address critical challenges in the seed system for key dryland crops—pigeon pea, chickpea, groundnut, millets, and sorghum—essential to the livelihoods of millions in Kenya. Organized by CIMMYT and the Kenya Agricultural and Livestock Research Organization (KALRO), this collaborative effort aimed to gather insights and jointly develop a seed systems strategy to strengthen a seed supply system that matches grain demand for these essential grains.

A group photo of the participants in the Kenya Drylands Crop Seed Systems Workshop. (Photo: Maria Monayo/CIMMYT)

While moderating the discussion, Patrick Ketiem, director of agricultural mechanization research at KALRO, highlighted the importance of the situation. “The demand for drought-tolerant dryland crops and varieties is a clarion call for breeders to innovate further,” he explained. This reflects a broader trend across the country, where even high-potential areas are shifting to dryland crops in response to unpredictable weather patterns.

Addressing farmer needs

The workshop allowed participants to delve into the intricacies of seed systems, from varietal preferences to market readiness, highlighting the importance of collaboration among breeders, distributors, and farmers. Moses Siambi, CIMMYT’s regional director for Africa, emphasized the importance of integrating passion with science to make a tangible difference in the lives of farmers. “Our work is not just about developing varieties,” Siambi remarked. “It’s about improving livelihoods and ensuring that the benefits of our research reach the smallholder farmer,” he explained, emphasizing the broader impact of CIMMYT’s efforts to boost agricultural productivity, food security, and livelihoods in the face of climate change.

Moses Siambi, CIMMYT’s regional director for Africa, engages in a conversation with a participant. (Photo: Maria Monayo/CIMMYT)

Chris Ojiewo, partnerships and seed systems lead at CIMMYT, explained the vision for the Dryland Crops program, referencing the journey of the Accelerated Varietal Improvement and Seed Delivery of Legumes and Cereals in Africa (AVISA) project, which was a culmination of a decade of research aimed at introducing new, diverse, and farmer-preferred crop varieties to farming communities through a variety of seed delivery models.

“The essence of our endeavor is to ensure that the genetic gains from our breeding efforts result in real benefits for the farmers,” he said. “Developing seed varieties with the end-user in mind is crucial to ensure that crops not only reach the farmers but also meet their specific needs effectively.”

Chris Ojiewo, partnerships and seed systems lead at CIMMYT, provides insights on the future of the Dryland Crops program, leveraging ten years of research from AVISA. (Photo: Maria Monayo/CIMMYT)

Improving seed systems

The workshop discussions also highlighted the importance of innovation in seed delivery models and the need for increased investment in the dryland crops sector as essential strategies for addressing current challenges and capitalizing on new opportunities. Investment decisions will be guided by granular data on local grain demand, enhancing seed production planning. Additionally, insights from institutions such as the Agriculture and Food Authority (AFA) and the State Department of Agriculture, consolidating per capita consumption data, will aid in determining the requisite seed supply per capita. Moreover, there is need for a mechanism for facilitating knowledge through consolidating data from existing projects that tackle comparable challenges related to food security and seed accessibility.

Lusike Wasilwa, crops systems director at KALRO, who represented the organization’s director general at the event, stressed the importance of seeds in agriculture. “From genes to gains, our focus is on developing climate-smart, nutritious crops that not only enhance soil health but also ensure food security in Kenya,” Wasilwa said. She further highlighted the importance of soil health and market development in achieving sustainable food production in arid and semi-arid lands, promoting biodiversity, and sustainable land management practices.

Lusike Wasilwa, the crops systems director at KALRO, who represents the organization’s director general at the event, emphasizes the importance of seeds in agriculture. (Photo: Maria Monayo/CIMMYT)

Cross-cutting issues

The workshop also addressed regulatory and control measures in seed production with Stellamaris Mulika, principal seed inspector from the Kenya Plant Health Inspectorate Service (KEPHIS), highlighting the importance of stringent quality control measures to ensure the dissemination of quality seed of superior crop varieties.

The importance of gender inclusivity and youth engagement in agriculture was also acknowledged, reflecting women and youth’s critical role in legume and cereal variety selection, diversifying seed sources, and meaningfully contributing to the seed value chain. Veneza Kendi, a student at Jomo Kenyatta University of Agriculture and Technology (JKUAT), proposed several interventions to increase investment capacity for farmers and aggregators, mainly from the assurance of high yields from certified seeds to farmers, serving as a motivation.

Gloria Mutheu, a seed merchant at Dryland Seed Company, highlighted the need for government support in investing in the grain sector, citing the school feeding program as an initiative to pull seed demand. Mutheu urged the government to expand the crop types in legumes and cereals, such as chickpeas, included in these school feeding programs to increase demand. This, she argued, would gradually establish an inclusive seed system for increasing uptake of these underutilized but opportunity nutrient-dense crops.

Gloria Mutheu, a seed merchant at Dryland Seed Company, and Veneza Kendi, a student at Jomo Kenyatta University of Agriculture and Technology (JKUAT), discuss the vital role of youth in the seed systems value chain. (Photo: Maria Monayo/CIMMYT)

The consensus was clear: to enhance the seed systems for dryland crops, there must be collaboration across the entire value chain—from breeders to farmers, from policymakers to the private sector. This integrated approach is critical for Kenya’s climate change adaptation, food security, and promotion of sustainable agricultural practices.

Spearheaded by CIMMYT with financial support from the Bill and Melinda Gates Foundation and the United States Agency for International Development (USAID), the AVISA project seeks to improve breeding and seed systems of dryland crops, as well as the livelihoods of small-scale producers and consumers in sub-Saharan Africa. CIMMYT is leveraging this opportunity to advance research and expand its influence through its 2030 strategy that shapes the future of agriculture as a driver of food and nutrition security, and climate resilient, sustainable, and inclusive agricultural development.

Sow, grow, and thrive: a pathway to improve cassava farming in Zambia

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

For decades, women farmers like Maureen Bwalya from the Musa camp in Kasama district of northern Zambia, have upheld the tradition of cultivating cassava on ridges. These small piles of soil created by hand hoes, 30-50 cm tall and 50 cm wide are intended to reduce water logging and facilitate cassava growth. But forming row after row takes a significant amount of physical labor. Establishing ridges follows a traditional practice known as chitemene, a Bemba word which means “place where branches have been cut for a garden.”

Chitemene, a slash and burn technique once common in Zambia, involves cutting down standing trees in the Miombo woodlands, stacking the logs, and then burning them to create a thick layer of ash believed to enhance soil fertility. The ashen fields are initially cultivated with pearl millet and followed by crops like cassava. As years progressed, this method has been associated with adverse environmental impacts disrupting the ecosystem balance due to increasingly shortened fallow and recovery periods. However, with the ever-changing climate, Bwalya and other farmers recognize the need for sustainable practices that require less labor.

Alternatives to the traditional methods

Since childhood, Maureen Bwalya, a mother of seven from Musa Camp in the Kasama District of northern Zambia, has dedicated her life to cassava farming. Thriving under very low fertility and acidic soils, cassava has offered a lifeline amid the challenges of rural agriculture. When the Sustainable Intensification of Smallholder Farming Systems in Zambia (SIFAZ) project was introduced in the northern province, where cassava is a strategic crop, Bwalya saw a valuable opportunity for change to cultivate better practices that not only improve cassava yields but also replenish soil fertility in her fields.

“When I started these trials, it was a tough transition,” said Bwalya, reflecting on her journey. “Shifting from ridge planting to flat land cultivation posed its challenges as this practice was new to me. But with time, I have learned the advantages of intercropping: increased yields, less labor, and enhanced productivity, all of which enrich my farming practices.”

Maureen Bwalya gazes through her plot. (Photo: CIMMYT)

Implemented over the last five years by CIMMYT, in collaboration with FAO and the Ministry of Agriculture, SIFAZ aims to advance the intensification of farming practices and catalyze widespread adoption among farmers in Zambia. In the Musa camp, key partners took on the challenge of advancing better farming techniques with cassava. Their collective objective was clear: to identify methods that minimized labor intensity while maximizing yields. Through rigorous trials, including comparing flat land planting against traditional ridge systems and experimenting with intercropping cassava with common beans and groundnuts, promising results have been seen.

The outcomes yielded thus far have been nothing short of inspiring across farmers. It has become clear to farmers and researchers that cassava planted on flat land, particularly within a Conservation Agriculture (CA) framework, was not only feasible in high rainfall areas but also yielded significantly higher returns. Despite observing fewer root structures, the roots themselves proved to be robust and weighty, ultimately translating to increased productivity for smallholder farmers. Furthermore, farmers have confirmed that cassava from the CA plots tastes better than the one from the ridged portions.

“As a cassava trial implementer,” Bwalya said, “I undertook various trials exploring intercropping cassava with beans and groundnuts, across both flat and ridge systems.”

Thriving and innovating

Her six-hectare plot has become a hub of experimentation, with 0.3 hectares dedicated to the ongoing trials. Encouraged by the successes and promising yields witnessed on flat land, Maureen extended these sustainable practices to the remaining expanse, intercropping maize with cassava. Her results have been noticed, drawing the interest of over fifty neighboring farmers, inspired by her flourishing plot.

As the harvesting season approaches, Bwalya faces no shortage of opportunities to market her produce. From cassava cuttings to nutrient-rich leaves and tubers, she never runs short of eager buyers in local markets, ensuring a steady income for her family.

Navigating through the different trials across the Kasama district, pockets of adoption in some farmers’ fields are noticeable. Through collaborative partnerships and community engagement, SIFAZ strives to empower farmers with the knowledge and tools stemming from the trials to become more food secure in the face of evolving climatic challenges.

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.