Pillar: Discovery

India transforms wheat for the world

Written by Mike Listman on October 16, 2023. Posted in Features.

India can applaud a hallmark in national food production: in 2023, the harvest of wheat—India’s second most important food crop—will surpass 110 million tons for the first time.

This maintains India as the world’s number-two wheat producer after China, as has been the case since the early 2000s. It also extends the wheat productivity jumpstart that begun in the Green Revolution—the modernization of India’s agriculture during the 1960s-70s that allowed the country to put behind it the recurrent grain shortages and extreme hunger of preceding decades.

“Newer and superior wheat varieties in India continually provide higher yields and genetic resistance to the rusts and other deadly diseases,” said Distinguished Scientist Emeritus at CIMMYT, Ravi Singh. “More than 90 percent of spring bread wheat varieties released in South Asia in the last three decades carry CIMMYT breeding contributions for those or other valued traits, selected directly from the Center’s international yield trials and nurseries or developed locally using CIMMYT parents.”

Wheat grain yield in Indian farmers’ fields rose yearly by more than 1.8 percent—some 54 kilograms per hectare—in the last decade, a remarkable achievement and significantly above the global average of 1.3 percent. New and better wheat varieties also reach farmers much sooner, due to better policies and strategies that speed seed multiplication, along with greater involvement of private seed producers.

“The emergence of Ug99 stem rust disease from eastern Africa in the early 2000s and its ability to overcome the genetic resistance of older varieties drove major global and national initiatives to quickly spread the seed of newer, resistant wheat and to encourage farmers to grow it,” Singh explained. “This both protected their crops and delivered breeding gains for yield and climate resilience.”

CIMMYT has recently adopted an accelerated breeding approach that has reduced the breeding cycle to three years and is expected to fast-track genetic gains in breeding populations and hasten delivery of improvements to farmers. The scheme builds on strong field selection and testing in Mexico, integrates genomic selection, and features expanded yield assays with partner institutions. To stimulate adoption of newer varieties, the Indian Institute of Wheat and Barley Research (IIWBR, of the Indian Council of Agricultural Research, ICAR) operates a seed portal that offers farmers advanced booking for seed of recently released and other wheat varieties.

Private providers constitute another key seed source. In particular, small-scale seed producers linked to the IIWBR/ICAR network have found a profitable business in multiplying and marketing new wheat seed, thus supporting the replacement of older, less productive or disease susceptible varieties.

Farm innovations for changing climates and resource scarcities

Following findings from longstanding CIMMYT and national studies, more Indian wheat farmers are sowing their crops weeks earlier so that the plants mature before the extreme high temperatures that precede the monsoon season, thus ensuring better yields.

New varieties DBW187, DBW303, DBW327, DBW332 and WH1270 can be planted as early as the last half of October, in the northwestern plain zone. Recent research by Indian and CIMMYT scientists has identified well-adapted wheat lines for use in breeding additional varieties for early sowing.

Resource-conserving practices promoted by CIMMYT and partners, such as planting wheat seed directly into the unplowed fields and residues from a preceding rice crop, shave off as much as two weeks of laborious plowing and planking.

Weeds in zero-tillage wheat in India. (Photo: Petr Kosina/CIMMYT)

“This ‘zero tillage’ and other forms of reduced tillage, as well as straw management systems, save the time, labor, irrigation water and fuel needed to plant wheat, which in traditional plowing and sowing requires many tractor passes,” said Arun Joshi, CIMMYT wheat breeder and regional representative for Asia and managing director of the Borlaug Institute for South Asia (BISA). “Also, letting rice residues decompose on the surface, rather than burning them, enriches the soil and reduces seasonal air pollution that harms human health in farm communities and cities such as New Delhi.”

Sustainable practices include precision levelling of farmland for more efficient irrigation and the precise use of nitrogen fertilizer to save money and the environment.

Science and policies ensure future wheat harvests and better nutrition

Joshi mentioned that increased use of combines has sped up wheat harvesting and cut post-harvest grain losses from untimely rains caused by climate change. “Added to this, policies such as guaranteed purchase prices for grain and subsidies for fertilizers have boosted productivity, and recent high market prices for wheat are convincing farmers to invest in their operations and adopt improved practices.”

To safeguard India’s wheat crops from the fearsome disease wheat blast, native to the Americas but which struck Bangladesh’s wheat fields in 2016, CIMMYT and partners from Bangladesh and Bolivia have quickly identified and cross-bred resistance genes into wheat and launched wheat disease monitoring and early warning systems in South Asia.

“More than a dozen wheat blast resistant varieties have been deployed in eastern India to block the disease’s entry and farmers in areas adjoining Bangladesh have temporarily stopped growing wheat,” said Pawan Singh, head of wheat pathology at CIMMYT.

Building on wheat’s use in many Indian foods, under the HarvestPlus program CIMMYT and Indian researchers applied cross-breeding and specialized selection to develop improved wheats featuring grain with enhanced levels of zinc, a micronutrient whose lack in Indian diets can stunt the growth of young children and make them more vulnerable to diarrhea and pneumonia.

“At least 10 such ‘biofortified’ wheat varieties have been released and are grown on over 2 million hectares in India,” said Velu Govindan, CIMMYT breeder who leads the Center’s wheat biofortification research. “It is now standard practice to label all new varieties for biofortified traits to raise awareness and adoption, and CIMMYT has included high grain zinc content among its primary breeding objectives, so we expect that nearly all wheat lines distributed by CIMMYT in the next 5-8 years will have this trait.”

A rigorous study published in 2018 showed that, when vulnerable young children in India ate foods prepared with such zinc-biofortified wheat, they experienced significantly fewer days of pneumonia and vomiting than would normally be the case.

Celebrating joint achievements and committing for continued success

The April-June 2018 edition of the “ICAR Reporter” newsletter called the five-decade ICAR-CIMMYT partnership in agricultural research “…one of the longest and most productive in the world…” and mentioned mutually beneficial research in the development and delivery of stress resilient and nutritionally enriched wheat, impact-oriented sustainable and climate-smart farming practices, socioeconomic analyses, and policy recommendations.

Speaking during an August 2022 visit to India by CIMMYT Director General Bram Govaerts, Himanshu Pathak, secretary of the Department of Agricultural Research and Education (DARE) of India’s Ministry of Agriculture and Farmers Welfare and Director General of ICAR, “reaffirmed the commitment to closely work with CIMMYT and BISA to address the current challenges in the field of agricultural research, education and extension in the country.”

“The ICAR-CIMMYT collaboration is revolutionizing wheat research and technology deployment for global food security,” said Gyanendra Singh, director, ICAR-IIWBR. “This in turn advances global peace and prosperity.”

India and CIMMYT wheat transformers meet in India in February, 2023. From left to right: Two students from the Indian Agricultural Research Institute (IARI); Arun Joshi, CIMMYT regional representative for Asia; Rajbir Yadav, former Head of Genetics, IARI; Gyanendra Singh, Director General, Indian Institute of Wheat and Barley Research (IIWBR); Bram Govaerts, CIMMYT director general; Harikrishna, Senior Scientist, IARI. (Photo: CIMMYT)

According to Govaerts, CIMMYT has concentrated on strategies that foster collaboration to deliver greater value for the communities both ICAR and the Center serve. “The way forward to the next milestone — say, harvesting 125 million tons of wheat from the same or less land area — is through our jointly developing and making available new, cost effective, sustainable technologies for smallholder farmers,” he said.

Wheat research and development results to date, challenges, and future initiatives occupied the table at the 28th All India Wheat & Barley Research Workers’ Meeting, which took place in Udaipur, state of Rajasthan, August 28-30, 2023, and which ICAR and CIMMYT wheat scientists attended.

Generous funding from various agencies, including the following, have supported the work described: The Australian Centre for International Agricultural Research (ACIAR), the Bill & Melinda Gates Foundation, the Federal Ministry for Economic Cooperation and Development of Germany (BMZ), the Foreign, Commonwealth & Development Office of UK’s Government (FCDO), the Foundation for Food & Agricultural Research (FFAR), HarvestPlus, ICAR, the United States Agency for International Development (USAID), funders of the One CGIAR Accelerated Breeding Initiative (ABI), and the Plant Health Initiative (PHI).

Transformative research provides pathways for including gender and socially marginalized groups

Written by Nima Chodon on October 15, 2023. Posted in Publications.

Intention, collaboration and commitment are critical to bridging the research and practice gap. Gender development practitioners and researchers from CGIAR centers, universities, national agricultural research and extension systems (NARES), civil society, and donor representatives this week shared insights from their research and work at the gender conference in New Delhi, India.

The discussion and exchange promises to create collaborations and opportunities devoted to improving the conditions and agency of women, youth and Indigenous communities in the Global South. “Transformative research can lead to meaningful impact,” said Angela Meentzen, senior gender researcher at CIMMYT. “We have been looking forward to this conference because coming together as researchers, scientists and development practitioners, we can discuss and share insights from each other’s practices and experiences from the field.”

Angela Meentzen (third from left) with CIMMYT colleagues from Asia and Africa at the CGIAR Gender 2023 conference in New Delhi. (Photo: Nima Chodon/CIMMYT)

Leading researchers and scientists from CIMMYT Asia and Africa presented their research and enriched the gender discussions at the conference. Meentzen said that CIMMYT is proud to support gender research that contributes meaningfully to transformative change and impact.

Below are highlights of four research poster presentations by our researchers (of the six presented by CIMMYT) at the conference:

Increased participation in agricultural processes does not mean more decision-making power for women farmers

Scientist Vijayalaxmi Khed examined how women manage excess workload (working inside and outside the house), a clear trade-off between productive and leisure time without change in domestic responsibilities. Due to domestic workload, she found that women’s time away from farms does not translate into leisure. Another important finding was that women with more agency had less time for leisure, unlike for men.

In her poster presentation, she concluded that rural women’s nexus of time poverty and decision-making has “clear implications for the development and diffusion of laborsaving technologies in agriculture.”

Working on the same study with Khed, Vijesh Krishna explored the relationship between women’s involvement in agricultural activities and decision-making. His presentation, ‘Farm managers or unpaid laborers?’, from the study covering 347 wheat-farming households across two years, concludes that “despite playing a crucial role in wheat farming in central India, most women lacked the ability to influence decisions.”

Gender-intentional maize breeding for better adoption and productivity in sub-Saharan Africa

Michael Euler, agriculture and resource economist, in his poster presentation explained how an on-farm trial to improve gender-intentional breeding and varietal adoption in maize was designed by CIMMYT breeders and researchers.

The study hypothesized that gender dynamics in household labor allocation and decision-making in maize systems influence trait preferences and farmers’ adoption of varieties. So, researchers conducted on-farm trials and household surveys with individual women and men household members to capture differences in their trait preferences in maize cultivation—production systems, seed demand and seed access—with 800 smallholder farmers in Zimbabwe and Kenya.

Euler emphasized the influence of socioeconomic and agroecological factors, including biotic–abiotic stress, in the household decisions on maize varietal adoption.

He concluded that the study results will help “guide the product development of regional maize breeding programs and strengthen communities’ adaptation to the changing environmental conditions for maize cultivation.”

Adoption of a weeding technology may lead to labor displacement of marginalized women laborers

Presenting a poster for the same session as Euler, Maxwell Mkondiwa—in a study coauthored with colleagues Khed and Krishna—highlighted how rapid diffusion of a laborsaving technology like herbicides could exclude the marginalized further. The study occurred in India’s state of Bihar, looking at nonfarming rural poor, primarily women, from socially marginalized groups.

From data on chemical weeding, the study analyzed the technology’s impact on inequality— highlighting how marginalized women laborers who work on manual weeding are then replaced by men who apply herbicides.

He stressed that not enough research is devoted to understanding whether farmer adoption of laborsaving technologies worsens economic inequalities or reinstates labor into better tasks. “We hope the evidence we generated will help researchers and policymakers develop relevant actions toward more inclusive innovations, and support laborers with new skills for the transitions,” said Mkondiwa.

Maxwell Mkondiwa presents his poster under the session Gender Dynamics in Agri-Food System Innovation at the CGIAR Gender 2023 conference. (Photo: M Mkondiwa/CIMMYT)

Women exhibit limited technical knowledge and experience social benefits differently in male-headed households of CASI technology adoption

Emma Karki, in her poster, explained that there is limited knowledge of the impact of technology adoption on women in a male-headed household in South Asia—with decision powers generally resting with male household members. The research tried to understand the gendered differences in the evaluation of technology adoption in male-headed households using conservation agriculture-based sustainable intensification (CASI) technology as a case study.

The study focused on identifying the commonalities and differences in the experiences and evaluation of CASI technology. Results indicated that “despite technology adoption, women had limited mechanistic understanding compared to men, with similar limitations on women’s time use and capacity development,” said Karki.

For future CASI promotion, Karki concluded: “Reducing information gaps and incorporating technological preferences of women needs prioritizing, including creating opportunities for them to access knowledge and engage both men and women in critical discussions surrounding gender norms.”

Similarly, Moti Jaleta’s research presentation highlighted the challenges of mechanization adoption for smallholder farmers in Ethiopia, primarily women. “Intentional research, whether in gender or social development, helps identify problems and opportunities for change,” endorsed Jaleta.

Meaningful research helps achieve gender and social inclusion goals

The ‘From Research to Impact: CGIAR GENDER Impact Platform and ICAR Conference 2023’, between October 9-12, 2023, in New Delhi, gathered researchers from 68 countries. In her inaugural address at the conference’s opening, the President of India Smt. Draupadi Murmu affirmed, “For ecologically sustainable, ethically desirable, economically affordable and socially justifiable production, we need research which can enable conditions to reach these goals.”

At the end of the four-day conference—with 60 research presentations and six plenary sessions—the organizers and participants reflected on their resolve ‘From Research To Impact,’ and the promise to recognize and collectively address the gender and social inequities in agrifood systems development.

In sub-Saharan Africa, mineral fertilization and agroecology are not incompatible

Written by Julian Bañuelos-Uribe on October 10, 2023. Posted in Press releases.

Are agroecological approaches, based for example on the use of legumes and manure, enough by themselves to ensure a long-term increase in annual crop yields in sub-Saharan Africa (SSA), without using more mineral fertilizer?

The answer is no, according to a team of agronomists who have published an in-depth analysis of 150 scientific articles on annual crops (maize, sorghum, millet, rice, cassava, etc.) and tropical legumes, both annual grain legumes (cowpea, groundnut) and legume trees (acacia, sesbania) in tropical environments.

These publications collate 50 years of knowledge on nutrient balances in sub-Saharan Africa, biological nitrogen fixation by tropical legumes, manure use in smallholder farming systems and the environmental impact of mineral fertilizer.

“When we look at comparable climate conditions and physical soil constraints, yields of maize – the main source of calories for people – in sub-Saharan Africa are three to four times lower than elsewhere in the world. This is largely due to the fact that mineral fertilizer use (nitrogen, potassium) is on average four times lower there”, says Gatien Falconnier, a researcher at CIRAD based in Zimbabwe and lead author of the article. “On average, 13 kg of nitrogen are used per hectare and per year in sub-Saharan Africa, for all crops, bearing in mind that the poorest farmers have no access to nitrogen fertilizers and therefore do not use them. It is mainly agri-business and vegetable farmers that have access to fertilizers”, adds François Affholder, an agronomist at CIRAD based in Mozambique and co-author of the article.

Maize and cowpea intercropping in the Maravire field. (Photo: CIMMYT)

“Our objective is not to produce like Europe or North America, but to produce more and more regularly according to the seasons and the years, and thus to increase the economic sustainability of our farming systems. To do so, we must ensure a minimum level of nutrients for crops, which require essential mineral elements for efficient photosynthesis, and therefore growth. Soils are typically lacking in mineral elements in sub-Saharan Africa, and the largely insufficient organic inputs lead to nutrient deficiencies in crops. This is the main limiting factor for crop yields, excluding drought situations”, says Pauline Chivenge of the African Plant Nutrition Institute (APNI). “The work by Christian Pieri showed as early as 1989 that it is possible to restore high levels of fertility to African soils through a balanced approach to organic and mineral nutrient inputs”, says François Affholder.

The article highlights five reasons why more mineral fertilizer is needed in sub-Saharan Africa:

Farming systems are characterized by very low mineral fertilizer use, widespread mixed crop-livestock systems, and significant crop diversity, including legumes. Inputs of mineral elements to crops by farmers are insufficient, resulting in a widespread decline in soil fertility due to soil nutrient mining.
The nitrogen requirements of crops cannot be met solely through biological nitrogen fixation by legumes and manure recycling. Legumes can only fix atmospheric nitrogen if symbiosis with soil bacteria functions correctly, which requires absorption of different mineral elements by the plant. Ken Giller of Wageningen University highlights that the ability of legumes to capture nitrogen from the air through their symbiosis with rhizobium bacteria is a fantastic opportunity for smallholder farmers, “but the amounts on nitrogen fixed are very small unless other nutrients such as phosphorus are supplied through fertilizers”.
Phosphorus and potassium are often the main limiting factors of the functioning of plants and living organisms, including symbiotic bacteria: if there is not enough phosphorus and potassium in soils, then there is no nitrogen fixation. These nutrient elements, phosphorus, potassium and micro-elements, need to be provided by fertilizers, since they cannot be provided by legumes, which draw these elements directly from the soil. In the case of manure, this is simply a transfer from grazing areas to cultivated areas, which gradually reduces fertility in grazing areas.
If used appropriately, mineral fertilizers have little impact on the environment. The greenhouse gas emissions linked to nitrogen fertilizer use can be controlled through a balanced and efficient application. In addition, mineral fertilizers can be produced more efficiently in order to reduce the impact of their production on greenhouse gas emissions, keeping in mind that this impact is low, at around 1% of total anthropogenic emissions.
Further reducing mineral fertilizer use in SSA would hamper productivity gains and would contribute directly to increasing food insecurity and indirectly to agricultural expansion and deforestation. Producing for a population that will double by 2050 is likely to require the use of more agricultural land. An extensive strategy thus harms biodiversity and contributes to increasing greenhouse gas emissions, contrary to an agroecological intensification strategy combined with efficient and moderate mineral fertilizer use.

“If we take account of biophysical production factors, such as climate and soil, and shortages of land and agricultural workers, it will be impossible to reach a satisfactory production level by fertilizing soils only with manure and using legumes”, says Leonard Rusinamhodzi, an agricultural researcher at the Ghana International Institute of Tropical Agriculture.

However, “agroecological principles linked directly to improving soil fertility, such as recycling of mineral and organic elements, crop efficiency and diversity, with for example agroforestry practices and cereal-legume intercropping, remain essential to improve soil health. Soil fertility is based on its organic matter content, provided by plant growth that determines the biomass that is returned to the soil in the form of roots and plant residues. Efficient mineral fertilizer use starts a virtuous circle. These nutrients are crucial for the sustainability of agricultural productivity”, says Gatien Falconnier.

The researchers therefore argue for a nuanced position that recognizes the need to increase mineral fertilizer use in sub-Saharan Africa, in a moderate manner based on efficient practices, in conjunction with the use of agroecological practices and appropriate policy support. This balanced approach is aimed at ensuring long-term food security while preserving ecosystems and preventing soil degradation.

Référence
Falconnier, G. N., Cardinael, R., Corbeels, M., Baudron, F., Chivenge, P., Couëdel, A., Ripoche, A., Affholder, F., Naudin, K., Benaillon, E., Rusinamhodzi, L., Leroux, L., Vanlauwe, B., & Giller, K. E. (2023).

The input reduction principle of agroecology is wrong when it comes to mineral fertilizer use in sub-Saharan Africa. Outlook on Agriculture, 0(0). https://doi.org/10.1177/00307270231199795

*CIRAD, CIMMYT, International Institute of Tropical Agriculture (IITA), Wageningen University and the African Plant Nutrition Institute (APNI)

Contact: presse@cirad.fr

Scientists:

Gatien Falconnier
gatien.falconnier@cirad.fr

Pauline Chivenge
P.CHIVENGE@apni.net

Leonard Rusinamhodzi
L.Rusinamhodzi@cgiar.org

Exploring alternative solutions: the case for synthetic mulch in a changing world

Written by Julian Bañuelos-Uribe on October 10, 2023. Posted in Blogs.

Food security remains elusive for most smallholder farmers reliant on rainfed crop production, given the erratic rainfall patterns induced by climate change in Southern Africa. Among others, conservation agriculture (CA) is a concept often considered to be effective to adapt to these erratic rainfall patterns, enabling farmers to cope better with the prolonged dry spells that are characteristic of the semi-arid regions in Zimbabwe.

Conservation agriculture essentially involves three key pillars, namely, reduced soil disturbance, the use of crop rotations or intercrop associations, and the provision of permanent soil cover. The soil-cover component often requires the use of previous crop residues or other organic materials as a surface mulch. However, local farmers consider this task to be the most laborious aspect of implementing CA, which poses a significant challenge to its widespread uptake.

Collecting insights on influence of synthetic mulch. (Photo: CIMMYT)

Traditionally, farmers are advised to use organic mulch, such as maize residues, for soil cover. However, in most communal areas, there is a growing scarcity of organic mulches as they are predominantly used as livestock feed in mixed crop-livestock farming systems. Ironically, semi-arid regions that benefit from the use of crop residues as soil cover are also regions where the residues are the scarcest due to competing uses as livestock feed or as firewood. These competing interests pose a dilemma, as it is essential to cover the soil while also necessary to feed the animals. In neighboring countries like Malawi, maize residues are also used as fuel for firewood, further increasing the demand. It is clearly important, therefore, to develop alternative solutions to address this pressing issue.

“Since I embarked on my journey in conservation agriculture back in 1998, the matter of residues has been a topic of discussion. It is imperative that we walk the talk and develop practical solutions to meet the needs of farmers who rely on residues to feed their animals. One potential solution we are exploring is the use of synthetic mulches to cover the soil. By employing this method, we can cover the soil, apply fertilizer, and hopefully witness a positive impact. We certainly must develop synthetic materials that can be used sustainably as surface mulches in the semi-arid environments where organics are most scarce yet most needed,” stated Isaiah Nyagumbo, regional cropping systems agronomist.

To test such innovations, some water-conservation experiments were established in Buhera and Mutoko, Zimbabwe, during the last two seasons, and the results have been encouraging.

“I am grateful to work with the CIMMYT team on these water conservation trials, and I hope they continue. Before the trials, we were using organic mulch, but after using the synthetic approach and comparing it with organic mulches and none at all, we are seeing so many positive results. But there are challenges we can’t escape, including affordability. But I have seen higher yield returns this year as I harvested close to 15 by 50kgs of maize,” said Nyawasha, a farmer from Mutoko, Zimbabwe, ward 16.

Further detailed studies to understand these systems have also been established in the current dry season at the CIMMYT campus in Harare, to test the effectiveness of these synthetic mulches under conditions of severe moisture stress. The different treatments include clear synthetic mulch, black synthetic mulch, organic mulch and no mulch. So far, for the maize crop now at flowering stage, the growth and yield are strikingly better in plots under the synthetic mulches compared with the organic and no mulch plots. This clearly shows the importance of finding viable alternatives. The crop with synthetic mulches also developed much faster, all the way from crop emergence.

Exploring the tied-ridging system

In these trials, mulching treatments are being tested in conventionally tilled plots, CA basins (pfumvudza basins) and under the tied-ridging system. Tied ridging has been developed in Zimbabwe for use by smallholder farmers since the 1980s and is well known for its effectiveness in reducing sheet erosion and water run-off. This system employs ridges 15–20 cm high, with crossties in the furrows at 1–2 m intervals that trap rainwater and prevent runoff and soil erosion. However, in a typical rainfed system, poor germination challenges can arise when planting on top of these ridges due to excessive drying of moisture from the raised ridges. Furthermore, during prolonged dry spells, the exposed ridges tend to cause crops to wilt more than flat-planted conventional crops. To address these issues, scientists at CIMMYT in Zimbabwe are also exploring innovative ways to improve the tied-ridging system through ways that minimize water loss through direct soil evaporation.

“This has been one of the shortcomings of the tied-ridging system, and we need ways to overcome this excessive moisture evaporation. Once the water has gone into the soil, it should only leave through plant uptake and not be wasted through direct soil evaporation,” said Nyagumbo.

Integrating synthetic mulch into the tied-ridge system. (Photo: CIMMYT)

One approach being considered is incorporating mulch into the system to reduce evaporation and ensure that captured water is retained. The results are evident in the vibrant greenery of the plants with mulch compared with those without. Observing the number of plants with tassels and silk, it is clear that the plots with clear synthetic material have faster growth and reach maturity sooner compared with the plots with black synthetic mulch.

“My outlook on the use of synthetic mulch on ridges is that they are much more effective, as it makes the soil very loose for good aeration to the plant and encourages high growth rate. I noticed that plants germinated in three days and the little water provided will directly benefit the plant without escaping. I am encouraged to continue doing this tied ridge approach using synthetic material,” said Nyekete, a farmer in Buhera, Zimbabwe, ward 7.

While exploring various options, it has also been important to prioritize and focus on one aspect at a time. The initial focus has been on maize residue, as it is a valuable resource for both soil cover and livestock feed. However, the scarcity of maize residue poses a significant challenge for many farmers, especially in regions like Buhera, Mberengwa and Shurugwi, where animals consume all available resources. Placing maize residues in open fields is not a very viable solution, as freely roaming livestock will just consume it. Fencing or creating structures to protect the residues from livestock also requires substantial effort and resources, thereby making this mulching a daunting task for farmers.

Food for thought

While the challenges faced in providing mulch for conservation agriculture are multifaceted, there is a growing need to develop innovative solutions that address the scarcity of organic mulch and explore alternative methods such as synthetic coverings. By continuously adapting and refining our practices, we can ensure the sustainability of agriculture in this region and improve the livelihoods of farmers.

Climate Adaptation Atlas will support evidence-based solutions in Sri Lanka

Written by Julian Bañuelos-Uribe on August 18, 2023. Posted in News.

We are all aware the immense challenges countries face due to climate change, particularly its impacts on vital sectors like agriculture, forestry and livestock. The agriculture industry is profoundly affected by unpredictable weather patterns and frequent incidences of extreme events such as floods, droughts and landslides. Consequently, finding effective solutions to address these issues becomes of paramount importance. Climate-resilient agriculture necessitates the adoption of sustainable crop and land management technologies.

In the context of South Asia, Sri Lanka stands out as one of the most severely affected countries by the impacts of climate change. The nation contends with a multitude of hazards, ranging from floods and landslides in the western and southwestern regions, drought and pest outbreaks in the northern region and coastal erosion along the coastal belts. These examples underscore the growing complexity and challenges associated with managing climate risks and patterns, especially when multiple hazards occur simultaneously.

In response, Sri Lanka has implemented climate-smart agricultural interventions, including the development and introduction of stress-tolerant crop varieties, rainwater harvesting, the introduction of energy-efficient irrigation systems, implementation of soil and water conservation programs and crop diversification. However, the agricultural sector still faces formidable challenges. There is a lack of up-to-date information on climate change and its impacts, a fragmented institutional setup, overlapping mandates and limited capacity for information sharing. To address these issues, we require zone-based planning and institutional collaboration. Integrating spatial considerations into rehabilitation and development interventions is the main consensus among stakeholders. All ongoing and planned programs need vulnerability information, and there is a consensus among stakeholders on the need to integrate spatial considerations into rehabilitation and development interventions.

This is where the Atlas of Climate Adaptation in South Asian Agriculture (ACASA) project becomes an invaluable asset in expediting Sri Lanka’s journey towards climate-smart agriculture. Recent evidence highlights the need for a comprehensive assessment of location-specific climate actions to bridge knowledge gaps within the country. Through the Atlas, we will quantify localized climatic risks today and, in the future, assess their likely impacts on agriculture and identify key adaptation options to mitigate these risks. This knowledge will strengthen Sri Lanka’s food security and reduce its vulnerability to climate-related hazards. By complementing traditional methods of risk characterization with novel approaches like intensity and frequency analysis of hazards and historical crop yields, our efforts will gain added efficacy.

ACASA, therefore, offers us a unique opportunity to foster collaboration, share knowledge and develop evidence-based innovative solutions to confront the challenges posed by climate change in Sri Lanka. It serves as a platform to connect hazards, practices, tools and adaptation options. By intertwining various aspects of climate change and gaining a deeper understanding of its spatial and temporal dimensions through the Atlas, Sri Lanka is steadfast in its commitment to building resilience and creating a sustainable future for generations to come.

Piece by P. Malathy, DG-Agriculture, Sri Lanka

A new Climate Adaptation Atlas to safeguard South Asian agriculture

Written by Julian Bañuelos-Uribe on August 14, 2023. Posted in Blogs.

Climate change is no longer a distant threat but a reality that profoundly affects our lives. Among the most vulnerable regions to climate change, South Asia stands out because it is home to over 100 million farmers and produces over 285 million metric tons of milled rice and 128 million metric tons of wheat (FAO 2020-21). Among 193 countries worldwide, South Asian countries rank in the top quarter for climate risk and are experiencing rising meteorological and climate-related disasters. These pose significant challenges to farmers and the 216 million people in South Asia living in extreme poverty (World Bank, 2018), further jeopardizing their food security and livelihoods.

Considering this, with support from the Bill & Melinda Gates Foundation, the Borlaug Institute for South Asia (BISA) is working with national agriculture research systems in South Asia to develop the Atlas of Climate Adaptation in South Asian Agriculture (ACASA).

The Atlas brings together spatially explicit South Asian data on the nature and evolving patterns of climate hazards. It will assess climate risks using gridded, village-scale analyses and through historical crop yield data and satellite signatures. The Atlas will consider the exposure of smallholder populations, farms and crop and livestock enterprises. It will assess the vulnerability or adaptive capacity of those populations and impacts on the region’s critical commodities. Importantly, the Atlas will provide a unique set of on-line tools and a portfolio of adaptation options to underpin better decisions regarding investments in agricultural technologies, climate information services, and policies. The project will also focus on building the capacity of concerned stakeholders such as multi-lateral agencies, government bodies, NGOs, and the private sector in the use of Atlas assets, through training materials, tutorials, and periodic workshops. This will enable informed investments and policy decisions to benefit 100 million farmers in South Asian region. For wider use, the Atlas will be embedded online as an open-source, web-enabled and interactive and dynamic tool for easy access by all concerned stakeholders.

Drawing on the expertise and experience of South Asian nations such as Bangladesh, India, Nepal, and Sri Lanka, which have suffered from extreme heat, prolonged droughts, and severe flooding in key crop-producing areas, ACASA represents an example of collaboration and knowledge exchange to reduce farmers’ risks and offer them ways to adapt.

BISA and CIMMYT are pleased to anchor this remarkable collaboration that leverages multi-disciplinary expertise and perspectives to address the complex challenges posed by climate change, linking the detailed characterization of climatic risks with mitigation technologies and policies to meet the needs of diverse stakeholders. The proposed work will contribute actively to the CIMMYT2030 Strategy where one of the 5 impact areas is centered around Climate adaptation and Mitigation. The entire strategy designs a path toward a Food and Nutrition Secure world through science and innovation in the midst of a global climate crisis.

Established in 2011 by CIMMYT and the Indian Council of Agricultural Research (ICAR), the Borlaug Institute for South Asia (BISA) is a non-profit international organization that applies advanced technologies to improve food systems and food security, nutrition, livelihoods, and the environment in South Asia, home to more than 300 million undernourished people.