Over 80% of the world’s 570 million farms are smallholder farms under 2 hectares, supporting rural livelihoods in impoverished regions. Smallholder farmers, who form a significant portion of the 690 million people experiencing hunger, need improved crop varieties to thrive under challenging conditions like low inputs, climate change stresses, and pests.
Challenges of breeding for smallholder farmers
Particularly at early stages, breeding programs face difficulties replicating the diverse and resource-constrained environments of smallholder farms, referred to as the Target Population of Environments (TPE). The TPE encompasses all locations where new crop varieties will be grown, characterized by varied biophysical conditions, environmental stresses, and farming practices.
Conventional research stations, where new selection candidates are tested, don’t fully replicate smallholder conditions. Practices like manual labor for weed management or intercropping are common among smallholders but rarely modeled on research stations. This mismatch can lead to inaccurate predictions of crop performance on farms and discarding potentially successful candidate varieties.
Early-Stage On-Farm Sparse Testing (OFST)
Early-stage OFST shifts testing to hundreds of smallholder farms at early stages, addressing two major issues. First, it evaluates crops under real-world, farmer-managed conditions. Second, it captures the diversity within the TPE by conducting trials on numerous farms.
Using farm-as-incomplete-block (FAIB) designs, small farms test 3–5 candidate varieties, aligning with their plot size and resource constraints. A genomic relationship matrix connects trials across farms, ensuring comparability between farms and enhancing selection accuracy through the sharing of information. This approach reduce replication and enable testing more candidates, thereby improving breeding efficiency and providing a basis for accelerated parent recycling. Smallholder farmers are highly diverse, and careful sampling ensures a wide range of farmers can participate. The small land requirements of this approach allow small, poor and/or women farmers to equally participate.
(Photo: CIMMYT)
On-Farm Testing and on-station testing: complementary yet demanding approaches
Early-stage on-farm testing complements, rather than replaces, on-station trials. Controlled assessments for traits like disease resistance and managed abiotic stresses remain essential at research stations. Conversely, insights from early-stage OFST can help refine on-station testing to better represent farming realities.
Scaling early-stage OFST demands strong partnerships between CGIAR, NARES, and farmers for decentralized trial management. Farmers must consent to participate and be compensated for risks. Additionally, significant resources and coordination are required to ensure trials are representative and reliable.
Despite these challenges, early-stage OFST holds transformative potential. By aligning breeding programs with smallholder realities, it can deliver improved crop varieties faster and more effectively, enhancing food security for those who need it most.
For more information, see the article: Accelerating Genetic Gain through Early-Stage On-Farm Sparse Testing by Werner et al., Trends in Plant Science.
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:
Government of India (2023). Contribution of agriculture in GDP. Department of Agriculture & Farmers Welfare. Accessed online.
TERI (2018). Economics of Desertification, Land Degradation and Drought in India, Vol I. The Energy and Resources Institute. Accessed online.
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.
Singh, A. & Akhtar, Md. P. (2022). Drought-like situation in Bihar: Study and thought of sustainable strategy. IWRA (India) Journal, 11(1). Accessed online.
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.
The collaborative long-term experiments (LTEs) established by CIMMYT and Ambo University on the Guder Mano Mezemer campus, specifically at the Abebech Gobena Agricultural Research Center (Photo: CIMMYT)
A collaboration effort between CIMMYT and Ambo University has positioned CIMMYT as the national leader in implementing high-impact technologies to improve the quality and quantity of cereal crop production in Ethiopia. This partnership, established over three decades ago at national and regional levels, has become a vital element in driving innovations and advancements in the agricultural sector.
A recent field visit to the LTEs, which were established three years ago, at the Abebech Gobena Agricultural Research Center in Guder, West Shewa Zone of the Oromia Region, demonstrated the importance of collaboration between research and development partners. The LTEs were established to study three main climate-smart interventions: nutrient management (including organic, inorganic, and residue-based practices), crop rotation, and intercropping, over an extended period of time. The event highlighted CIMMYT’s ongoing efforts to improve Ethiopia’s agricultural production, particularly by testing agronomic practices that increase yields and enhance soil health through the use of different organic fertilizers along with inorganic fertilizer and proper cereal-legume rotation over the past two years at the center and in farmers’ fields.
Focus areas of research
Research will focus on developing the best combination of locally available organic inputs with inorganic fertilizer, together with appropriate cereal-legume rotation on LTE plots, to monitor yield and soil health parameters such as organic matter accumulation over time, improve resource use efficiency, and enhance soil health. The main crops involved are:
Maize (Zea Mays): Jibat variety
Wheat (Triticum aestivum): Wane variety
Teff (Eragrostis teff): Quncho variety
Legumes: Faba bean, soybean, haricot bean, and pigeon pea
The LTE sites have served as demonstration and learning platforms for local communities. The cropping system in the area has traditionally been dominated by continuous monocropping of cereals for decades. In response, this collaborative LTE initiative has introduced four legume crops into rotation and intercropping systems, three of which are new to the area. Some of these new crops have been well received by farmers, who have selected the most promising options to try on their fields as “baby trials,” with the LTE plots referred to as “mother trials.” These efforts have been accompanied by training and resources for farmers and extension workers.
Community engagement and outcomes
The initiative has involved 55 farmers from three villages, with a focus on optimizing crop yields and promoting sustainable agriculture. Dr. Tesfaye Sida, an Agronomist/Sustainable Agrifood Systems at CIMMYT, highlighted the importance of these trials in improving food security and soil health in the intervention areas. He added, “This streamlined client-based collaboration, based on capacity development and knowledge transfer, is helping us to drive the pathways for climate-resilient, sustainable, and inclusive agricultural development for food and nutrition security in Ethiopia.”
A diverse group of stakeholders visiting the collaborative research trial sites (Photo: CIMMYT)
On September 23, 2024, a significant stakeholder gathering, including academic professionals, research and development partners, and farmers, as well as local government decision-makers, visited the trial sites to observe the research activities and progress at the Guder Mano Mezemer campus in Birbirsa village, where CIMMYT and Ambo University are conducting collaborative research. During the event, Dr. Gizachew Kebede, a soil scientist at CIMMYT, highlighted the dual focus of the research: crop rotation and soil nutrient management. “Despite farmers’ familiarity with crop rotation, they often face challenges in identifying the best companion crops and appropriate sequences. We are addressing this by rotating cereals such as maize, wheat, and teff with legumes such as soybean and pigeon pea, some of which are new to the system and likely to improve soil fertility and system resilience. The other fascinating part of the research is the testing of both organic and non-organic fertilizers, an intelligent approach to determining best practices for soil health and productivity, with a particular focus on understanding long-term effects, with plans extending for at least a decade. This kind of knowledge transfer is crucial to improving agricultural productivity and sustainability in the community, and we have seen great results from the trials so far.”
Dr. Tesfaye Shiferaw, an agronomist/Sustainable Agrifood Systems emphasizes the model. “Initially these were long-term experiments (LTEs), which mainly established the long-term impacts of interventions (nutrient management, crop rotation, intercropping, etc.) on climate change effects, productivity, and soil health. However, during the demonstrations of these LTEs, local farmers expressed interest in trying the agricultural technology/intervention/practice of their choice. We then added potential other technologies that could be options and allowed them to conduct their own mini-trials (called baby trials) to increase the number of alternatives. In this context, the LTEs can now be referred to as “mother trials.”
Research collaborators also echoed this sentiment. Dr. Nigusie Bekele, Director of Guder Mezemer Campus, highlighted Ambo University’s pride in hosting trials and major events related to their research collaboration with CIMMYT. He emphasized the university’s commitment to multidisciplinary research and service to the community, noting that their partnership with CIMMYT is instrumental in this regard, particularly in promoting productive, inclusive, and resilient food systems in Ethiopia. Dr. Nigusie described their joint action research and innovation efforts as transformative, benefiting not only the local community but also the wider Ethiopian population dependent on smallholder agriculture.
New launch of common beans and farmer insights
Farmer Shelema Hirpasa proudly displays a thriving crop of haricot beans grown after receiving seeds from CIMMYT. This image highlights the positive impact of research and support in increasing agricultural productivity and empowering local farmers (Photo: CIMMYT)
The photo features young farmer Shelema Hirpasa proudly displaying a thriving crop of haricot beans grown after receiving seeds from CIMMYT. This image highlights the positive impact of research and support in increasing agricultural productivity and empowering local farmers.
The introduction of soybean and pigeon pea in the intervention villages has generated considerable interest among farmers, leading to increased participation and positive results. Farmer Shelema Hirpasa from Tuke Kutaye District was enthusiastic about the exceptional performance of these new crops, noting a stark contrast with the traditional varieties he had previously grown. Highlighting the advantages of crop diversification, he said: “I have been involved in farming since my childhood but have never seen such performance in my crops.” This reflects the transformative impact of these new agricultural practices on local farming communities.
CIMMYT researcher gives visitors a detailed briefing on the ongoing activities at the demonstration sites (Photo: CIMMYT)
This interaction highlights the importance of knowledge sharing and engagement in agricultural research, as stakeholders learn about innovative practices and advances being implemented in the field. The gathering also reflects the commitment of the various partners in the initiative, showcasing their shared interest in advancing agricultural research and promoting food security through collaboration between CIMMYT and Ambo University.
Media coverage and future directions
The collaboration and field visits have drawn media attention, with coverage from outlets such as the Oromia Broadcasting Network (OBN). This initiative, implemented by CIMMYT and Ambo University with support from One CGIAR’s Excellence in Agronomy (EIA) and Ukama Ustawi initiatives, is paving the way for sustainable and resilient agricultural practices in Ethiopia.
Through continued partnership and innovation, CIMMYT and Ambo University are not only transforming agricultural practices in the region but also contributing to the broader goal of food and nutrition security throughout Ethiopia.
