Location: Asia

As a fast growing region with increasing challenges for smallholder farmers, Asia is a key target region for CIMMYT. CIMMYT’s work stretches from Central Asia to southern China and incorporates system-wide approaches to improve wheat and maize productivity and deliver quality seed to areas with high rates of child malnutrition. Activities involve national and regional local organizations to facilitate greater adoption of new technologies by farmers and benefit from close partnerships with farmer associations and agricultural extension agents.

New publication: Scaling agricultural mechanization services in smallholder farming systems

Written by Emma Orchardson on February 27, 2020. Posted in Publications.

A new study by researchers at the International Maize and Wheat Improvement Center (CIMMYT) assesses how three large projects have scaled service provision models for agricultural mechanization in Bangladesh, Mexico and Zimbabwe. In what is possibly the first cross-continental assessment of these issues to date, the study gauges the extent to which each initiative fits with the needs of its environment to enable sustained machinery use by farmers at a large scale, while acknowledging the influence of project design on outcomes.

Each of the projects has made considerable progress towards increasing the adoption of agricultural machinery in their target area. In Bangladesh and Mexico, mechanization service providers and machinery dealers have been able to strengthen their business cases because the projects use geospatial and market data to provide targeted information on client segmentation and appropriate cropping systems. In Zimbabwe, CIMMYT and partners have worked to strengthen the market for two-wheeled tractors by creating demand among smallholders, developing the capacity of existing vocational training centers, and spurring private sector demand.

However, despite these initial successes, it can often be difficult to gauge the sustained change and transformative nature of such interventions.

Applying a scaling perspective

To address this challenge, research teams held a series of workshops with project partners in each country, including regional government representatives, national and local private sector stakeholders, and direct project collaborators such as extension agents and site managers. Participants were asked to answer a series of targeted questions and prompts using the Scaling Scan, a user-friendly tool which facilitates timely, structured feedback from stakeholders on issues that matter in scaling. Responses given during this exercise allowed project designers to analyze, reflect on, and sharpen their scaling ambition and approach, focusing on ten scaling ‘ingredients’ that need to be considered to reach a desired outcome, such as knowledge and skills or public sector governance.

Local service provider uses a bed planter for crop production in Horinofolia, Bangladesh. (Photo: Ranak Martin)

“Although at first sight the case studies seem to successfully reach high numbers of end users, the assessment exposes issues around the sustainable and transformative nature of the project interventions,” says Lennart Woltering, a scaling advisor at CIMMYT.

The added value of this approach, explains Jelle Van Loon, lead author and CIMMYT mechanization specialist, is that lessons learned from project-focused interventions can be amplified to generate broader, actionable knowledge and implement thematic strategies worldwide. “This is especially important for CIMMYT as we do exactly that, but often face different constraints depending on the local context.”

The use of a scaling perspective on each of these projects exposed important lessons on minimizing project dependencies. For example, though each project has invested considerably in both capacity and business development training, in all three case studies the large-scale adoption of recommended service provision models has been limited by a lack of finance and insufficient collaboration among the value chain actors to strengthen and support mechanization service provider entrepreneurs.

“While provision of market and spatial information helps local businesses target their interventions, local stakeholders are still dependent on the projects in terms of transitioning from project to market finance, facilitating collaboration along the value chain, and provision of leadership and advocacy to address issues at governance level,” Woltering explains. This, Van Loon adds, demonstrates a need for the inclusion of properly planned exit strategies from projects, as well as a degree of flexibility during the project development phase.

In all three regions, the supply of appropriate mechanization services is struggling to meet demand and few solutions have been found to support the transition from project to market finance. Continued capacity development is required at all stages of the value chain to ensure the provision of high-quality services and it has been suggested that incentivizing potential clients to access mechanization services and linking service providers with machinery dealers and mechanics might produce more satisfying results than simply supporting equipment purchases.

Read the full study: Scaling agricultural mechanization services in smallholder farming systems: Case studies from sub-Saharan Africa, South Asia, and Latin America. 2020. Van Loon, J., Woltering, L., Krupnik, T.J., Baudron, F., Boa, M., Govaerts, B. In: Agricultural Systems v. 180.

See more recent publications by CIMMYT researchers:

An R Package for Bayesian analysis of multi-environment and multi-trait multi-environment data for genome-based prediction. Montesinos-Lopez, O.A., Montesinos-Lopez, A., Luna-Vazquez, F.J., Toledo, F.H., Perez-Rodriguez, P., Lillemo, M., Crossa, J. In: G3: genes – genomes – genetics v. 9, no. 5, p. 1355-1369.
New deep learning genomic-based prediction model for multiple traits with binary, ordinal, and continuous phenotypes. Montesinos-Lopez, O.A., Martin-Vallejo, J., Crossa, J., Gianola, D., Hernandez Suárez, C.M., Montesinos-Lopez, A., JULIANA P., Singh, R.P. In: G3: genes – genomes – genetics v. 9, no. 5, p. 1545-1556.
QTL mapping for micronutrients concentration and yield component traits in a hexaploid wheat mapping population. Jia Liu, Bihua Wu, Singh, R.P., Velu, G. In: Journal of Cereal Science v.88, p. 57-64.
Climate Smart Agriculture practices improve soil organic carbon pools, biological properties and crop productivity in cereal-based systems of North-West India. 2019. Jat, H.S., Datta, A., Choudhary, M., Sharma, P.C., Yadav, A.K., Choudhary, V., Gathala, M.K., Jat, M.L., McDonald, A. In: Catena v. 181: 104059.
A cost-benefit analysis of climate-smart agriculture options in Southern Africa: balancing gender and technology. 2019. Mutenje, M., Farnworth, C.R., Stirling, C., Thierfelder, C., Mupangwa, W., Nyagumbo, I. In: Ecological Economics v.163, p. 126-137.
Yield and labor relations of sustainable intensification options for smallholder farmers in sub-Saharan Africa. A meta-analysis. 2019. Dahlin, S., Rusinamhodzi, L. In: Agronomy for Sustainable Development v. 39, no. 3.
Divergence with gene flow is driven by local adaptation to temperature and soil phosphorus concentration in teosinte subspecies (Zea mays parviglumis and Zea mays mexicana). 2019. Aguirre-Liguori, J.A., Gaut, B.S., Jaramillo-Correa, J.P., Tenaillon, M.I., Montes Hernandez, S., García-Oliva, F., Hearne, S., Eguiarte, L.E. In: Molecular Ecology v. 28, no. 11, p. 2814-2830.
Tillage, crop establishment, residue management and herbicide applications for effective weed control in direct seeded rice of eastern Indo-Gangetic Plains of South Asia . 2019. Jat, R.K., Singh, Ravi Gopal, Gupta, R.K., Gill, G., Chauhan, B.S., Pooniya, V. In: Crop Protection v. 123, p. 12-20.
Benefits to low-input agriculture. 2019. Reynolds, M.P., Braun, H.J. In: Nature Plants v. 5, p. 652-653.
Improving nutrition through biofortification: preharvest and postharvest technologies. 2019. Listman, G.M., Guzman, C., Palacios-Rojas, N., Pfeiffer, W.H., San Vicente, F.M., Velu, G. In: Cereal Foods World v. 64, no. 3.
Transcriptomics of host-specific interactions in natural populations of the parasitic plant purple witchweed (Striga hermonthica). 2019. Lopez, L., Bellis, E.S., Wafula, E., Hearne, S., Honaas, L., Ralph, P.E., Timko, M.P., Unachukwu, N., dePamphilis, C.W., Lasky, J.R. In: Weed Science v. 67, no. 4, p. 397-411.
Reduced response diversity does not negatively impact wheat climate resilience. 2019. Snowdon, R.J., Stahl, A., Wittkop, B., Friedt, W., Voss-Fels, K.P., Ordon, F., Frisch, M., Dreisigacker, S., Hearne, S., Bett, K.E., Cuthbert, R.D. In: Proceedings of the National Academy of Sciences of the United States of America (PNAS) v. 116, p. 10623-10624.
Understanding clients, providers and the institutional dimensions of irrigation services in developing countries: a study of water markets in Bangladesh. 2019. Mottaleb, K.A., Krupnik, T.J., Keil, A., Erenstein, O. In: Agricultural Water Management v. 222, p. 242-253.
15N Fertilizer recovery in different tillage-straw systems on a Vertisol in north-west Mexico. 2019. Grahmann, K., Dittert, K., Verhulst, N., Govaerts, B., Buerkert, A. In: Soil Use and Management v. 35, no. 3, p. 482-491.
Agricultural mechanization and reduced tillage: antagonism or synergy?. Debello, M. J., Baudron, F., Branka Krivokapic-Skoko, Erenstein, O. In: International Journal of Agricultural Sustainability v. 17, no. 3, p. 219-230.
Scaling – from “reaching many” to sustainable systems change at scale: a critical shift in mindset. 2019. Woltering, L., Fehlenberg, K., Gerard, B., Ubels, J., Cooley, L. In: Agricultural Systems v. 176, art. 102652.
Determinants of sorghum adoption and land allocation intensity in the smallholder sector of semi-arid Zimbabwe. Musara, J. P., Musemwa, L., Mutenje, M., Mushunje, A., Pfukwa, C. In: Spanish Journal of Agricultural Research v. 17, no. 1, art. e0105.
Genetic dissection of drought and heat-responsive agronomic traits in wheat. Long Li, Xinguo Mao, Jingyi Wang, Xiaoping Chang, Reynolds, M.P., Ruilian Jing In: Plant Cell and Environment v. 42, no. 9, p. 2540-2553.
Spending privately for education in Nepal. Who spends more on it and why?. Mottaleb, K.A., Rahut, D.B., Pallegedara, A. In: International Journal of Educational Development v. 69, p. 39-47.
Genotype x environment interaction of quality protein maize hybrids under contrasting management condition in Eastern and Southern Africa. 2019. Mebratu, A., Dagne Wegary Gissa, Mohammed, W., Chere, A.T., Amsal Tesfaye Tarekegne In: Crop Science v. 59, no. 4, p. 1576-1589.
Collaborative research on Conservation Agriculture in Bajio, Mexico: continuities and discontinuities of partnerships. Martinez-Cruz, T.E., Almekinders, C., Camacho Villa, T.C. In: International Journal of Agricultural Sustainability v. 17, no. 3, p. 243-256.
Conservation agriculture based sustainable intensification of basmati rice-wheat system in North-West India. 2019. Jat, H.S., Pardeep Kumar, Sutaliya, J.M., Satish Kumar, Choudhary, M., Singh, Y., Jat, M.L. In: Archives of Agronomy and Soil Science v. 65, no. 10, p. 1370-1386.
Gender and household energy choice using exogenous switching treatment regression: evidence from Bhutan. Aryal, J.P., Rahut, D.B., Mottaleb, K.A., Ali, A. In: Environmental Development v. 30, p. 61-75.
Weather shocks and spatial Market efficiency: evidence from Mozambique. 2019. Salazar, C.| Hailemariam Ayalew | Fisker, P. In: Journal of Development Studies v. 55, No. 9, p. 1967-1982.
Effects of Pakistan’s energy crisis on farm households. Ali, A., Rahut, D.B., Imtiaz, M. In: Utilities Policy v. 59, art. 100930.
Social inclusion increases with time for zero-tillage wheat in the Eastern Indo-Gangetic Plains. Keil, A., Archisman Mitra, Srivastava, A., McDonald, A. In: World Development v. 123, art. 104582.

Advancing Nutritious Food Crops: The Role of the Public Sector

Written by Mary Donovan on February 25, 2020. Posted in In the media.

The public sector plays a vital catalytic role, through enabling policies and programs, in ensuring that biofortified crops like iron pearl millet, zinc wheat, and zinc rice reach the most vulnerable populations to address the problem of ‘hidden hunger’.

Smartphones drive data collection revolution, boost climate-smart agriculture in Bangladesh

Written by Matthew O'Leary on February 20, 2020. Posted in News.

Farmer receiving information from a phone-based service. (Photo: Michelle DeFreese/CIMMYT)

Agricultural research is entering a new age in Bangladesh. The days, months and years it takes to collect farm data with a clipboard, paper and pen are nearing their end.

Electronic smartphones and tablets are gaining ground, used by researchers, extension workers and farmers to revolutionize the efficiency of data collection and provide advice on best-bet practices to build resilient farming systems that stand up to climate change.

Digital data collection tools are crucial in today’s ‘big data’ driven agricultural research world and are fundamentally shifting the speed and accuracy of agricultural research, said Timothy Krupnik, Senior Scientist and Systems Agronomist at the International Maize and Wheat Improvement Center (CIMMYT).

“Easy-to-use data collection tools can be made available on electronic tablets for surveys. These allow extension workers to collect data from the farm and share it instantaneously with researchers,” he said.

“These tools allow the regular and rapid collection of data from farmers, meaning that researchers and extension workers can get more information than they would alone in a much quicker time frame.”

“This provides a better picture of the challenges farmers have, and once data are analyzed, we can more easily develop tailored solutions to farmers’ problems,” Krupnik explained.

Through the USAID and Bill and Melinda Gates supported Cereal Systems Initiative for South Asia (CSISA), and the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) supported Big Data Analytics for Climate-Smart Agriculture in South Asia projects, 125 Department of Agricultural Extension (DAE) agents were trained throughout Bangladesh to use tablets to gather agronomic information from rice and wheat farmers.

It is the first time extension workers have been involved in data collection in the country. Since the pilot began in late 2019, extension workers have collected data from over 5,000 farmers, with detailed information on climate responses, including the management of soil, water and variety use to understand what drives productivity. The DAE is enthused about learning from the data, and plans to collect information from 7,000 more farmers in 2020.

Bangladesh’s DAE is directly benefiting through partnerships with expert national and international researchers developing systems to efficiently collect and analyze massive amounts of data to generate relevant climate-smart recommendations for farmers, said the department Director General Dr. M. Abdul Muyeed.

Workers spread maize crop for drying at a wholesale grain market. (Photo: Dreamstime.com)

For the first time widespread monitoring examines how farmers are coping with climate stresses, and agronomic data are being used to estimate greenhouse gas emissions from thousands of individual farmers. This research and extension partnership aims at identifying ways to mitigate and adapt to climate change, he explained.

“This work will strengthen our ability to generate agriculturally relevant information and increase the climate resilience of smallholder farmers in Bangladesh,” Dr. Muyeed said.

Next-gen big data analysis produces best-bet agricultural practices

“By obtaining big datasets such as these, we are now using innovative research methods and artificial intelligence (AI) to examine patterns in productivity, the climate resilience of cropping practices, and greenhouse gas emissions. Our aim is to develop and recommend improved agricultural practices that are proven to increase yields and profitability,” said Krupknik.

The surveys can also be used to evaluate on-farm tests of agricultural technologies, inform need-based training programs, serve local knowledge centers and support the marketing of locally relevant agricultural technologies, he explained.

“Collecting farm-specific data on greenhouse gas emissions caused by agriculture and recording its causes is a great step to develop strategies to reduce agriculture’s contribution to climate change,” added Krupnik.

‘Sharing’ or ‘sparing’ land?

Written by Rodrigo Ordóñez on February 14, 2020. Posted in Blogs. 4 Comments on ‘Sharing’ or ‘sparing’ land?

Any fifth grader is familiar with the Cretaceous-Tertiary mass extinction, which saw dinosaurs — and three quarters of all species alive at that time — disappear from Earth, probably after it was struck by a very large asteroid. However, few people are aware the planet is currently going through a similar event of an equally large magnitude: a recent report from the World Wide Fund for Nature highlighted a 60% decline in the populations of over 4,000 vertebrate species monitored globally since 1970. This time, the culprit is not an asteroid, but human beings. The biggest threat we represent to other species is also the way we meet one of our most fundamental needs: food production.

As a response, scientists, particularly ecologists, have looked for strategies to minimize trade-offs between agriculture and biodiversity. One such strategy is “land sparing,” also known as the “Borlaug effect.” It seeks to segregate production and conservation and to maximize yield on areas as small as possible, sparing land for nature. Another strategy is “land sharing” or “wildlife-friendly farming,” which seeks to integrate production and conservation in the same land units and make farming as benign as possible to biodiversity. It minimizes the use of external inputs and retains unfarmed patches on farmland.

A heated debate between proponents of land sparing and proponents of land sharing has taken place over the past 15 years. Most studies, however, have found land sparing to lead to better outcomes than land sharing, in a range of contexts. With collaborators from CIFOR, UBC and other organizations, I hypothesized that this belief was biased because researchers assessed farming through a narrow lens, only looking at calories or crop yield.

Many more people today suffer from hidden hunger, or lack of vitamins and minerals in their diets, than lack of calories. Several studies have found more diverse and nutritious diets consumed by people living in or near areas with greater tree cover as trees are a key component of biodiversity. However, most of these studies have not looked at mechanisms explaining this positive association.

Forests for food

Studying seven tropical landscapes in Bangladesh, Burkina Faso, Cameroon, Ethiopia, Indonesia, Nicaragua and Zambia, we found evidence that tree cover directly supports diets in four landscapes out of seven. This may be through the harvest of bushmeat, wild fruits, wild vegetables and other forest-sourced foods. The study further found evidence of an agroecological pathway — that forests and trees support diverse crop and livestock production through an array of ecosystem services, ultimately leading to improved diets — in five landscapes out of seven. These results clearly demonstrate that although land sparing may have the best outcomes for biodiversity, it would cut off rural households from forest products such as forest food, firewood and livestock feed. It would also cut off smallholder farms from ecosystem services provided by biodiversity, and smallholders in the tropics tend to depend more on ecosystem services than on external inputs.

In Ethiopia, previous research conducted by some of the same authors has demonstrated that multifunctional landscapes that do not qualify as land sparing nor as land sharing may host high biodiversity whilst being more productive than simpler landscapes. They are more sustainable and resilient, provide more diverse diets and produce cereals with higher nutritional content.

The debate on land sparing vs. sharing has largely remained confined to the circles of conservation ecologists and has seldom involved agricultural scientists. As a result, most studies on land sparing vs. sharing have focused on minimizing the negative impact of farming on biodiversity, instead of looking for the best compromises between agricultural production and biodiversity conservation.

To design landscapes that truly balance the needs of people and nature, it is urgent for agronomists, agricultural economists, rural sociologists and crop breeders to participate in the land sparing vs. sharing debate.

This study was made possible by funding from the UK’s Department for International Development (DFID), the United States Agency for International Development (USAID) through the project Agrarian Change in Tropical Landscapes, and by the CGIAR Research Programs on MAIZE and WHEAT.

Representatives of the Satmile Satish Club (SSCOP) meet with members of the Grambikash Farmers Producer Company in Sitai, Cooch Behar, West Bengal, India. (Photo: SSCOP)

New year, new beginnings

Written by Rodrigo Ordóñez on February 12, 2020. Posted in News.

For many years, the International Maize and Wheat Improvement Center (CIMMYT) has been working to improve the productivity, profitability and sustainability of smallholder agriculture in India through conservation agriculture and sustainable intensification practices. The Sustainable and Resilient Farming Systems Intensification (SRFSI) project began in 2014 in the state of West Bengal, with participatory research in eight farming cooperatives from the cities of Cooch Behar and Malda. Through the SRFSI project, CIMMYT has helped encourage women to participate in agricultural processes, adopt sustainable practices for various crops and utilize new technologies to improve their livelihoods.

Women farmers in West Bengal have demonstrated an interest in part-time agribusiness occupations. Some of them are coming together to form farmer groups and cooperatives that make a profit.

Mooni Bibi and other women from her community founded the Mukta Self Help Group. This organization of female farmers, supported by CIMMYT through the SRFSI project, helped turned rice cultivation into a business opportunity that helps other women. As a result of these efforts, these women now enjoy more financial freedom, can afford healthier food, are able to provide a better education for their children and benefit from an improved social standing within the community.

The Satmile Satish Club O Pathagar (SSCOP), a CIMMYT partner, has been vital in this process. SSCOP is now a resource for technical support and a training hub for conservation agriculture. It is now focused on introducing conservation agriculture practices to more areas, beginning with Sitai, a new neighborhood in Cooch Behar. This area is rich in proactive female farmers, but its agricultural sector is not fully modernized yet.

A group of women in Sitai founded Grambikash Farmers Producer Company, another farming cooperative that aims to increase crop yields and promote sustainability. The company challenges social norms and helps women become more financially and socially independent. This group of entrepreneurs is committed to apply conservation agriculture and sustainable intensification technology on 30 acres of land, beginning in 2020, with continuous support from SSCOP.

Through its work helping farmers in Cooch Behar, SSCOP is now a center of excellence for rural entrepreneurship as well as an advocate for conservation agriculture in West Bengal. They provide technical support and serve as a training hub for conservation agriculture and various associated sectors. Much of the training done by SSCOP is now self-funded.

Since 2014, CIMMYT has been collaborating with SSCOP to reach out to more than 70,000 farmers in Cooch Behar, spreading the benefits of conservation agriculture and sustainable intensification beyond the lifespan of the SRFSI project.

Growers issued yellow rust warning

Written by Mary Donovan on February 6, 2020. Posted in In the media.

The Mexico-based International Maize and Wheat Improvement Centre (CIMMYT) has warned wheat growing farmers in Pakistan to keep a close eye on the spread of yellow rust disease which might evolve in new forms.

Early Maturing Short Duration High Yielding White Maize open-pollinated variety. (Photo: MMRI)

Ten new CIMMYT-developed maize varieties released in Pakistan

Written by Mary Donovan on February 5, 2020. Posted in News.

Pakistan’s maize sector achieved a remarkable milestone in 2019 by releasing ten new maize varieties developed by the International Maize and Wheat Improvement Center (CIMMYT) for commercial cultivation. The new varieties were released by two public sector research institutes.

The Maize and Millets Research Institute (MMRI) in Yousafwala, one of the leading and the oldest maize research institutes in Pakistan, released four open-pollinated varieties (OPVs) sourced from CIMMYT. The varieties, named Gohar-19, CIMMYT-PAK, Sahiwal Gold, and Pop-1 are the newest additions to Pakistan’s maize variety list. All the varieties are short-duration, which means they can be harvested quickly to rotate land for the next crop. They can also be grown in the main and off season, which makes them suitable for many different cropping systems.

The Agricultural Research Institute (ARI) in Quetta received approval for six of CIMMYT’s white kernel OPVs from the Provincial Seed Council (PSC), a government body responsible for variety registration in Balochistan. The varieties are named MERAJ-2019, MAHZAIB-2019, NOOR-2019, PAGHUNDA-2019, SILVER-2019, and SAR-SUBZ-2019. They are early-maturing with high yielding potential & drought tolerance. Drought stress is a major challenge for farmers in the Balochistan province, which covers 45% of Pakistan’s territory.

A group of maize experts visits maize research and seed production fields at the Maize and Millets Research Institute (MMRI) in Yousafwala, Pakistan. (Photo: CIMMYT)

Muhammad Arshad, Director of MMRI, acknowledged CIMMYT’s efforts to deploy the wide range of maize germplasm in the country. Arshad added that the Institute is working with partners to widely distribute these seeds to smallholder farmers at a reasonable price. “We are able to harvest maize yields from these early maturing varieties by applying 4-6 irrigations, unlike other varieties that require a minimum of ten irrigations per crop cycle,” said Syed Asmatullah Taran, Director of Cereal Crops at the Agricultural Research Institute in Quetta, Balochistan. “These are the first ever released maize varieties in our province,” he added, applauding CIMMYT for this milestone.

Muhammad Imtiaz, CIMMYT’s Country Representative for Pakistan and leader of the Agricultural Innovation Program (AIP), appreciated MMRI and ARI for their dedication and impactful efforts to strengthen the local maize seed system. Imtiaz explained that these new varieties will help cash-strapped smallholder farmers improve their livelihoods.

Through the AIP project, CIMMYT and its partners are helping new seeds reach farmers. “We expect to see more releases in 2020, as many varieties are in the pipeline,” said CIMMYT’s Seed Systems Specialist for South Asia, AbduRahman Beshir. “What is important is to scale up the seed production and distribution of these varieties so that farmers can get their share from the interventions. Water-efficient maize varieties will not only contribute to climate change adaptation strategy, but will also support the livelihood of marginal farmers.” Beshir also emphasized the importance of private sector engagement for seed delivery.

A maize field is prepared manually for planting in Balochistan province, Pakistan. (Photo: CIMMYT)

Maize is Pakistan’s third most important cereal following wheat and rice, encompassing an area of 1.3 million hectares. Maize productivity is also among the highest in South Asia, with national yields reaching almost 5 tons per hectare.

Despite its growing demand, maize production in Pakistan faces various challenges such as a lack of diverse genotypes suitable for various uses and ecologies, a weak seed delivery system unable to reach marginal farmers, high retail price of seeds and unpredictable weather conditions due to climate changes.

To enhance the availability, accessibility and affordability of quality maize seeds, the Agricultural Innovation Program (AIP) for Pakistan, led by CIMMYT and funded by USAID, is working with partners to benefit smallholder farmers across the country. The project focuses on the development and deployment of market-ready maize products sourced from different breeding hubs and systematically testing their adaptation in order to accelerate seed and varietal replacement in Pakistan. In the last six years, AIP’s public and private partners were able to access over 60 finished maize products and more than 150 parental lines from CIMMYT and IITA for further testing, variety registration, demonstration and seed scale up.

All weather maize seed will reach farmers shortly: Dr Prasanna

Written by Mary Donovan on January 31, 2020. Posted in In the media.

B.M Prasanna, Director of CIMMYT’s Global Maize Program and the CGIAR Research Program on Maize, says agriculture scientists have set their focus on making cultivation a profitable venture.

http://timesofindia.indiatimes.com/articleshow/73791934.cmsutm_source=contentofinterest&utm_medium=text&utm_campaign=cppst

New publications: Optimum nitrogen fertilizer rates for rice and wheat in the Indo-Gangetic Plains of India

Written by Alison Doody on January 29, 2020. Posted in Publications. 1 Comment on New publications: Optimum nitrogen fertilizer rates for rice and wheat in the Indo-Gangetic Plains of India

Wheat spikes against the sky. (Photo: H. Hernandez Lira/CIMMYT)

New research by an international team of scientists, including International Maize and Wheat Improvement Center (CIMMYT) agricultural systems and climate change scientist Tek Sapkota, has identified the optimum rates of nitrogen fertilizer application for rice and wheat crops in the Indo-Gangetic Plains of India.

By measuring crop yield and nitrous oxide (N₂O) fluxes over two years, Sapkota and his colleagues reported that the optimum rate of N fertilizer for rice is between 120 and 200 kg per hectare, and between 50 and 185 kg per hectare for wheat. The results of the study have the potential to save farmer’s money and minimize dangerous greenhouse gas emissions while maintaining crop productivity.

Nitrous oxide, one of the most important greenhouse gases in the earth’s atmosphere, is responsible for ozone depletion and global climate change, and has a global warming potential 265 times that of carbon dioxide (CO₂).

Research has shown that agricultural soils account for around 60% of global nitrous oxide emissions. These emissions are directly related to the application of nitrogen fertilizers to croplands. While these fertilizers help crop yields, studies show that only about one third of the applied nitrogen is actually used by crops. The rest is released as nitrous oxide or seeps into waterways, causing harmful algal blooms.

In India, the total consumption of nitrogen fertilizer is about 17 million tons — expected to rise to 24 million tons by 2030 to feed a growing population. Nitrous oxide emissions will rise along with it if farmers do not minimize their fertilizer use and manage application more efficiently. What’s more, farmers receive a higher subsidy for nitrogen fertilizer — a policy that leads farmers to apply more fertilizer than the recommended dose.

Measured methods

The study, led by Sapkota, estimated the rate of nitrogen fertilizer application with the most economically optimum yield and minimum environmental footprint. Applying more fertilizer than this would be a waste of farmer’s money and cause unnecessary harm to the environment.

Researchers measured crop yield and nitrous oxide fluxes for two wheat seasons and one rice season from 2014 to 2016. The scientists found that nitrogen fertilization rate clearly influenced daily and cumulative soil nitrous oxide emissions in wheat and rice for both years. Nitrous oxide emissions were higher in both wheat and rice in the nitrogen-fertilized plots than in the control plots.

Using statistical methods, the researchers were able to measure the relationship between crop productivity, nitrogen rate and emissions intensity, in both rice and wheat. This gave them the optimum rate of nitrogen fertilizer application.

This work was carried out by International Maize and Wheat Improvement Center (CIMMYT) and implemented as part of the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), with support from the CGIAR Trust Fund and through bilateral funding agreements.

Read the full study:
Identifying optimum rates of fertilizer nitrogen application to maximize economic return and minimize nitrous oxide emission from rice–wheat systems in the Indo-Gangetic Plains of India

See more recent publications by CIMMYT researchers:

Landscape composition overrides field level management effects on maize stemborer control in Ethiopia. 2019. Kebede, Y., Bianchi, F., Baudron, F., Tittonell, P. In: Agriculture, Ecosystems and Environment v. 279, p. 65-73.
From plot to scale: ex-ante assessment of conservation agriculture in Zambia. 2019. Komarek, A.M.| Hoyoung Kwon, Haile, B., Thierfelder, C., Mutenje, M., Azzarri, C. In: Agricultural Systems v. 173, p. 504-518.
Importance of considering technology growth in impact assessments of climate change on agriculture. 2019. Aggarwal, P.K., Vyas, S., Thornton, P., Campbell, B.M., Kropff, M. In. Global Food Security v. 23, p. 41-48.
Evaluating maize genotype performance under low nitrogen conditions using RGB UAV phenotyping techniques. 2019. Buchaillot, M.L., Gracia-Romero, A., Vergara, O., Zaman-Allah, M., Amsal Tesfaye Tarekegne, Cairns, J.E., Prasanna, B.M., Araus, J.L., Kefauver, S.C. In: Sensors v. 19. No. 8, art. 1815.
Understanding tropical maize (Zea mays L.): the major monocot in modernization and sustainability of agriculture in sub-Saharan Africa. 2019. Awata, L.A.O., Tongoona, P., Danquah, E., Ifie, B.E., Mahabaleswara, S.L., Jumbo, M.B., Marchelo-D’ragga, P.W., Sitonik, C. In: International Journal of Advance Agricultural Research v. 7, no. 2, p. 32-77.
Genome-wide genetic diversity and population structure of tunisian durum wheat landraces based on DArTseq technology. 2019. Robbana, C., Kehel, Z., Ben Naceur, M., Sansaloni, C.P., Bassi, F., Amri, A. In: International Journal of Molecular Sciences v. 20, no. 6, art. 1352.
High-throughput phenotyping for crop improvement in the genomics era. 2019. Mir, R., Reynolds, M.P., Pinto Espinosa, F., Khan, M.A., Bhat, M. In: Plant Science v. 282, p. 60-72.
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Breaking Ground: Lara Roeven delves into complex gender dynamics

Written by Emma Orchardson on January 15, 2020. Posted in Features.

Lara Roeven completed her undergraduate degree in social sciences at the University of Amsterdam in the Netherlands, where she focused primarily on political science in a program that combined this with the study of psychology, law and economics. “I liked it a lot because it gave me an interdisciplinary look at how social injustice manifests itself.”

Having worked on gender and social inclusion issues in the past, she had already heard of CGIAR and its research portfolio, but it was the interdisciplinarity of CIMMYT’s approach that prompted her to apply to the organization at the end of a study abroad program in Mexico. “I had a strong interest in agriculture and I’d always wanted to look at how gender and social inclusion issues affect women and marginalized groups within the context of rural, environmental or climate change, so this role seemed like a good fit.”

Since joining CIMMYT’s Gender and Social Inclusion research unit in January 2019, Roeven has been part of a team of researchers analyzing the ways in which gender norms and agency influence the ability of men, women and young people to learn about, access and adopt innovations in agriculture and natural resource management.

So far, Roeven has mainly been supporting data analysis and helping to produce literature reviews. She has contributed to a number of studies simultaneously over the past year, from the feminization of agriculture in India to changing gender norms in Tanzania. “It’s very interesting because you learn the particularities of many different countries, and the extent to which gender norms can differ and really influence people’s opportunities.”

Searching for nuance

A lot of research follows a similar pattern in highlighting the relationship between women’s work and empowerment, but realities on the ground are often more nuanced. In India, for example, well-established social structures add another layer of complexity to gender dynamics. “What I found interesting when we started looking into the ways in which gender and caste interrelate was that nothing is straightforward.”

Women from higher castes can actually be more isolated than women from lower ones, she explains, for whom it can be more accepted to pursue paid work outside of the home. However, lower-caste women also frequently experience high levels of poverty and vulnerability and face social exclusion in other realms of life.

“These dynamics are actually a lot more complicated than we usually think. And that’s why it’s so interesting to do this kind of comparative research where you can see how these issues manifest themselves in different areas, and what researchers or development practitioners working at ground level have to take into account in order to address the issues these women face.”

Eventually, Roeven hopes to pursue a PhD and a career in academia, but for the time being she’s enjoying working on research that has so much potential for impact. “There are many studies showing that gender gaps need to be closed in order to increase food security and eliminate hunger,” she says. “I feel like many interventions, extension services or trainings don’t always have the desired effect because they do not effectively reach women farmers or young people. Certain people are continuously left out.”

Conducting this kind of research is a crucial step in working towards empowering women across the world, and Roeven would like to see more researchers incorporating this into their work, and really taking on gender as a relational concept. “We can keep on conducting research within the Gender and Social Inclusion research unit, but it would be interesting if our approaches could be mainstreamed in other disciplinary areas as well.”

Though it might not be easy, Roeven emphasizes that it is necessary in order to have an impact and prevent innovations from exacerbating gender and social inequality. “Besides,” she adds, “I think it’s great when research has a social relevance.”

CIMMYT and JAAS representatives signed the agreement to establish a screening facility for Fusarium head blight in Nanjing, China.

New international partnership to identify and develop resistance to dangerous wheat disease

Written by Marcia MacNeil on January 14, 2020. Posted in Press releases.

The CGIAR Research Program on Wheat (WHEAT), led by the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agriculture in the Dry Areas (ICARDA), recently announced a partnership with the Jiangsu Academy of Agricultural Sciences (JAAS) in China to open a new screening facility for the deadly and fast-spreading fungal wheat disease Fusarium head blight, or FHB.

The new facility, based near the JAAS headquarters in Nanjing, aims to capitalize on CIMMYT’s world-class collection of disease-resistant wheat materials and the diversity of the more than 150,000 wheat germplasm in its Wheat Germplasm Bank to identify and characterize genetics of sources of resistance to FHB and, ultimately, develop new FHB-resistant wheat varieties that can be sown in vulnerable areas around the world.

“The participation of JAAS in the global FHB breeding network will significantly contribute to the development of elite germplasm with good FHB resistance,” said Pawan Singh, head of wheat pathology for CIMMYT.

“We expect that in 5 to 7 years, promising lines with FHB resistance will be available for deployment by both CIMMYT and China to vulnerable farmers, thanks to this new station.”

Fusarium head blight is one of the most dangerous wheat diseases. It can cause up to 50% yield loss and produce severe mycotoxin contamination in food and feed, which affects farmers in the form of increased health care and veterinary care costs, and reduced livestock production.

Even consuming low to moderate amounts of Fusarium mycotoxins may impair intestinal health, immune function and fitness. Deoxynivalenol (DON), a mycotoxin the fungus inducing FHB produces, has been linked to symptoms including nausea, vomiting, and diarrhea. In livestock, Fusarium mycotoxin consumption exacerbates infections with parasites, bacteria and viruses — such as occidiosis in poultry, salmonellosis in pigs and mice, colibacillosis in pigs, necrotic enteritis in poultry and swine respiratory disease.

In China, the world’s largest wheat producer, Fusarium head blight is the most important biotic constraint to production.

The disease is extending quickly beyond its traditionally vulnerable wheat growing areas in East Asia, North America, the southern cone of South America, Europe and South Africa — partly as a result of global warming, and partly due to otherwise beneficial, soil-conserving farming practices such as wheat-maize rotation and reduced tillage.

“Through CIMMYT’s connections with national agricultural research systems in developing countries, we can create a global impact for JAAS research, reaching the countries that are expected to be affected the expansion of FHB epidemic area,” said Xu Zhang, head of Triticeae crops research group at the Institute of Food Crops of the Jiangsu Academy of Agricultural Sciences.

The new collaborative effort will target Fusarium head blight research but could potentially expand to research on other wheat diseases as well. Wheat blast, for example, is a devastating disease that spread from South America to Bangladesh in 2016. Considering the geographical closeness of Bangladesh and China, a collaboration with CIMMYT, as one of the leading institutes working on wheat blast, could have a strong impact.

Although the platform is new, the two institutions have a longstanding relationship. The bilateral collaboration between JAAS and CIMMYT began in early 1980s with a shuttle breeding program between China and Mexico to speed up breeding for Fusarium head blight resistance. The two institutions also conducted extensive germplasm exchanges in the 1980s and 1990s, which helped CIMMYT improve resistance to Fusarium head blight, and helped JAAS improve wheat rust resistance.

Currently, JAAS and CIMMYT are working on Fusarium head blight under a project funded by the National Natural Science Foundation of China called “Elite and Durable Resistance to Wheat Fusarium Head Blight” that aims to deploy resistance genes/QTL in Chinese and CIMMYT germplasm and for use in wheat breeding.

This research is supported by CGIAR Fund Donors.

INTERVIEW OPPORTUNITIES:

Xinyao He, Wheat Pathologist and Geneticist, Global Wheat Program, CIMMYT. x.he@cgiar.org, +52 55 5804 2004 ext. 2218

FOR MORE INFORMATION, CONTACT THE MEDIA TEAM:

Marcia MacNeil, Communications Officer, CGIAR Research Program on Wheat. m.macneil@cgiar.org, +52 55 5804 2004 ext. 2070.

Rodrigo Ordóñez, Communications Manager, CIMMYT. r.ordonez@cgiar.org, +52 55 5804 2004 ext. 1167.

ABOUT CIMMYT:

The International Maize and Wheat Improvement Center (CIMMYT) is the global leader in publicly-funded maize and wheat research and related farming systems. Headquartered near Mexico City, CIMMYT works with hundreds of partners throughout the developing world to sustainably increase the productivity of maize and wheat cropping systems, thus improving global food security and reducing poverty. CIMMYT is a member of the CGIAR System and leads the CGIAR Research Programs on Maize and Wheat and the Excellence in Breeding Platform. The Center receives support from national governments, foundations, development banks and other public and private agencies. For more information, visit staging.cimmyt.org.

ABOUT JAAS:

Jiangsu Academy of Agricultural Sciences (JAAS), a comprehensive agricultural research institution since 1931, strives to make agriculture more productive and sustainable through technology innovation. JAAS endeavors to carry out the Plan for Rural Vitalization Strategy and our innovation serves agriculture, farmers and the rural areas. JAAS provide more than 80% of new varieties, products and techniques in Jiangsu Province, teach farmers not only to increase yield and quality, but also to challenge conventional practices in pursuit of original ideas in agro-environment protection. For more information, visit home.jaas.ac.cn/.

Seed systems in Nepal are going digital

Written by Mary Donovan on January 6, 2020. Posted in Features.

In Nepal, it takes at least a year to collate the demand and supply of a required type and quantity of seed. A new digital seed information system is likely to change that, as it will enable all value chain actors to access information on seed demand and supply in real time. The information system is currently under development, as part of the Nepal Seed and Fertilizer (NSAF) project, funded by the United States Agency for International Development (USAID) and led by the International Maize and Wheat Improvement Center (CIMMYT).

In this system, a national database allows easy access to an online seed catalogue where characteristics and sources of all registered varieties are available. A balance sheet simultaneously gathers and shares real time information on seed demand and supply by all the stakeholders. The digital platform also helps to plan and monitor seed production and distribution over a period of time.

Screenshot of the DESIS portal, still under development.

Challenges to seed access

Over 2,500 seed entrepreneurs engaged in production, processing and marketing of seeds in Nepal rely on public research centers to get early generation seeds of various crops, especially cereals, for subsequent seed multiplication.

“The existing seed information system is cumbersome and the process of collecting information takes a minimum of one year before a seed company knows where to get the required amount and type of seed for multiplication,” said Laxmi Kant Dhakal, Chairperson of the Seed Entrepreneurs Association of Nepal (SEAN) and owner of a seed company in the far west of the country. Similarly, more than 700 rural municipalities and local units in Nepal require seeds to multiply under farmers cooperatives in their area.

One of the critical challenges farmers encounter around the world is timely access to quality seeds, due to unavailability of improved varieties, lack of information about them, and weak planning and supply management. Asmita Shrestha, a farmer in Surkhet district, has been involved in maize farming for the last 20 years. She is unaware of the availability of different types of maize that can be productive in the mid-hill region and therefore loses the opportunity to sow improved maize seeds and produce better harvests.

In Sindhupalchowk district, seed producer Ambika Thapa works in a cooperative and produces hybrid tomato seeds. Her problem is getting access to the right market that can provide a good profit for her efforts. A kilogram of hybrid tomato seed can fetch up to $2,000 in a retail and upscale market. However, she is not getting a quarter of this price due to lack of market information and linkages with buyers. This is the story of many Nepali female farmers, who account for over 60% of the rural farming community, where lack of improved technologies and access to profitable markets challenge farm productivity.

At present, the Seed Quality Control Center (SQCC), Nepal Agriculture Research Council (NARC), the Centre for Crop Development and Agro Bio-diversity Conservation (CCDABC) and the Vegetable Development Directorate (VDD) are using paper-based data collection systems to record and plan seed production every year. Aggregating seed demand and supply data and generating reports takes at least two to three months. Furthermore, individual provinces need to convene meetings to collect and estimate province-level seed demand that must come from rural municipalities and local bodies.

A digital technology solution

CIMMYT and its partners are leveraging digital technologies to create an integrated Digitally Enabled Seed Information System (DESIS) that is efficient, dynamic and scalable. This initiative was the result of collaboration between U.S. Global Development Lab and USAID under the Digital Development for Feed the Future (D2FTF) initiative, which aimed to demonstrate that digital tools and approaches can accelerate progress towards food security and nutrition goals.

FHI 360 talked to relevant stakeholders in Nepal to assess their needs, as part of the Mobile Solutions Technical Assistance and Research (mSTAR) project, funded by USAID. Based on this work, CIMMYT and its partners identified a local IT expert and launched the development of DESIS.

The Digitally Enabled Seed Information System (DESIS) will help to create market and research linkages for Nepal's seed system. — The Digitally Enabled Seed Information System (DESIS) will help to create market and research linkages for Nepal’s seed system.

DESIS will provide an automated version of the seed balance sheet. Using unique logins, agencies will be able to place their requests and seed producers to post their seed supplies. The platform will help to aggregate and manage breeder, foundation and source seed, as well as certified and labelled seed. The system will also include an offline seed catalogue where users can view seed characteristics, compare seeds and select released and registered varieties available in Nepal. Users can also generate seed quality reports on batches of seeds.

“As the main host of this system, the platform is well designed and perfectly applicable to the needs of SQCC,” said Madan Thapa, Chief of SQCC, during the initial user tests held at his office. Thapa also expressed the potential of the platform to adapt to future needs.

The system will also link farmers to seed suppliers and buyers, to build a better internal Nepalese seed market. The larger goal of DESIS is to help farmers grow better yields and improve livelihoods, while contributing to food security nationwide.

DESIS is planned to roll out in Nepal in early 2020. Primary users will be seed companies, agricultural research centers, the Ministry of Agriculture and Livestock Development, agrovets, cooperatives, farmers, development partners, universities, researchers, policy makers, and international institutions. The system is based on an open source software and will be available on a mobile website and Android app.

“It is highly secure, user friendly and easy to update,” said Warren Dally, an IT consultant who currently oversees the technical details of the software and the implementation process.

Farmers in Nepal show their most popular digital tool, a mobile phone, during a training. (Photo: Bandana Pradhan/CIMMYT)

As part of the NSAF project, CIMMYT is also working to roll out digital seed inspection and a QR code-based quality certification system. The higher vision of the system is to create a seed data warehouse that integrates the seed information portal and the seed market information system.

Digital solutions are critical to link the agricultural market with vital information so farmers can make decisions for better production and harvest. It will not be long before farmers like Asmita and Ambika can easily access information using their mobile phones on the type of variety suitable to grow in their region and the best market to sell their products.

Fruitful year for wheat, maize varieties

Written by Mary Donovan on December 23, 2019. Posted in In the media.

Pakistan has released 20 new high-yielding, disease-resistant and climate change–resilient wheat and maize varieties during the year.

The achievement came mainly on the back of a partnership between the International Maize and Wheat Improvement Centre (CIMMYT) and the Pakistan Agricultural Research Council (PARC) with support from the US development agency USAID.

Policy brief highlights opportunities to promote balanced nutrient management in South Asia

Written by Matthew O'Leary on December 17, 2019. Posted in Publications.

Hafiz Uddin, a farmer from Ulankhati, Tanpuna, Barisal, Bangladesh. He used seeder fertilizer drills to plant mung beans on one acre of land, which resulted in a better yield than planting manually. (Photo: Ranak Martin)

Over the last few decades, deteriorating soil fertility has been linked to decreasing agricultural yields in South Asia, a region marked by inequities in food and nutritional security.

As the demand for fertilizers grows, researchers are working with government and businesses to promote balanced nutrient management and the appropriate use of organic amendments among smallholder farmers. The Cereal Systems Initiative for South Asia (CSISA) has published a new policy brief outlining opportunities for innovation in the region.

Like all living organisms, crops need access to the right amount of nutrients for optimal growth. Plants get nutrients — like nitrogen, phosphorus, and potassium, in addition to other crucially important micronutrients — from soils and carbon, hydrogen, oxygen from the air and water. When existing soil nutrients are not sufficient to sustain good crop yields, additional nutrients must be added through fertilizers or manures, compost or crop residues. When this is not done, farmers effectively mine the soil of fertility, producing short-term gains, but undermining long-term sustainability.

Nutrient management involves using crop nutrients as efficiently as possible to improve productivity while reducing costs for farmers, and also protecting the environment by limiting greenhouse gas emissions and water quality contamination. The key behind nutrient management is appropriately balancing soil nutrient inputs — which can be enhanced when combined with appropriate soil organic matter management — with crop requirements. When the right quantities are applied at the right times, added nutrients help crops yields flourish. On the other hand, applying too little will limit yield and applying too much can harm the environment, while also compromising farmers’ ability to feed themselves or turn profits from the crops they grow.

Smallholder farmers in South Asia commonly practice poor nutrition management with a heavy reliance on nitrogenous fertilizer and a lack of balanced inputs and micronutrients. Declining soil fertility, improperly designed policy and nutrient management guidelines, and weak fertilizer marketing and distribution problems are among the reasons farmers fail to improve fertility on their farms. This is why it is imperative to support efforts to improve soil organic matter management and foster innovation in the fertilizer industry, and find innovative ways to target farmers, provide extension services and communicate messages on cost-effective and more sustainable strategies for matching high yields with appropriate nutrient management.

Cross-country learning reveals opportunities for improved nutrient management. The policy brief is based on outcomes from a cross-country dialogue facilitated by CSISA earlier this year in Kathmandu. The meeting saw researchers, government and business stakeholders from Bangladesh, India, Nepal, and Sri Lanka discuss challenges and opportunities to improving farmer knowledge and access to sufficient nutrients. Several key outcomes for policy makers and representatives of the agricultural development sector were identified during the workshop, and are included in the brief.

Extension services as an effective way to encourage a more balanced use of fertilizers among smallholder farmers. There is a need to build the capacity of extension to educate smallholders on a plant’s nutritional needs and proper fertilization. It also details how farmers’ needs assessments and human-centered design approaches need to be integrated while developing and delivering nutrient application recommendations and extension materials.

Nutrient subsidies must be reviewed to ensure they balance micro and macro-nutrients. Cross-country learning and evidence sharing on policies and subsidies to promote balanced nutrient application are discussed in the brief, as is the need to balance micro and macro-nutrient subsidies, in addition to the organization of subsidy programs in ways that assure farmers get access the right nutrients when and where they are needed the most. The brief also suggests additional research and evidence are needed to identify ways to assure that farmers’ behavior changes in response to subsidy programs.

Market, policy, and product innovations in the fertilizer industry must be encouraged. It describes the need for blended fertilizer products and programs to support them. A blend is made by mixing two or more fertilizer materials. For example, particles of nitrogen, phosphate and small amounts of secondary nutrients and micronutrients mixed together. Experience with blended products are uneven in the region, and markets for blends are nascent in Bangladesh and Nepal in particular. Cross-country technical support on how to develop blending factories and markets could be leveraged to accelerate blended fertilizer markets and to identify ways to ensure equitable access to these potentially beneficial products for smallholder farmers.

Download the CSISA Policy and Research Note:
Development of Balanced Nutrient Management Innovations in South Asia: Lessons from Bangladesh, India, Nepal, and Sri Lanka.

The CSISA project is led by CIMMYT with partners the International Rice Research Institute (IRRI) and the International Food Policy Research Institute (IFPRI) and funded by the U.S. Agency for International Development and the Bill & Melinda Gates Foundation.

What is wheat blast?

Written by Matthew O'Leary on December 11, 2019. Posted in Explainers. 7 Comments on What is wheat blast?

What is wheat blast disease?

Wheat blast is a fast-acting and devastating fungal disease that threatens food safety and security in tropical areas in South America and South Asia. Directly striking the wheat ear, wheat blast can shrivel and deform the grain in less than a week from the first symptoms, leaving farmers no time to act.

The disease, caused by the fungus Magnaporthe oryzae pathotype triticum (MoT), can spread through infected seeds and survives on crop residues, as well as by spores that can travel long distances in the air.

Magnaporthe oryzae can infect many grasses, including barley, lolium, rice, and wheat, but specific isolates of this pathogen generally infect limited species; that is, wheat isolates infect preferably wheat plants but can use several more cereal and grass species as alternate hosts. The Bangladesh wheat blast isolate is being studied to determine its host range. The Magnaporthe oryzae genome is well-studied but major gaps remain in knowledge about its epidemiology.

The pathogen can infect all aerial wheat plant parts, but maximum damage is done when it infects the wheat ear. It can shrivel and deform the grain in less than a week from first symptoms, leaving farmers no time to act.

Where is wheat blast found?

First officially identified in Brazil in 1985, the disease is widespread in South American wheat fields, affecting as much as 3 million hectares in the early 1990s. It continues to seriously threaten the potential for wheat cropping in the region.

In 2016, wheat blast spread to Bangladesh, which suffered a severe outbreak. It has impacted around 15,000 hectares of land in eight districts, reducing yield on average by as much as 51% in the affected fields.

Wheat-producing countries and presence of wheat blast.

How does blast infect a wheat crop?

Wheat blast spreads through infected seeds, crop residues as well as by spores that can travel long distances in the air.

Blast appears sporadically on wheat and grows well on numerous other plants and crops, so rotations do not control it. The irregular frequency of outbreaks also makes it hard to understand or predict the precise conditions for disease development, or to methodically select resistant wheat lines.

At present blast requires concurrent heat and humidity to develop and is confined to areas with those conditions. However, crop fungi are known to mutate and adapt to new conditions, which should be considered in management efforts.

How can farmers prevent and manage wheat blast?

There are no widely available resistant varieties, and fungicides are expensive and provide only a partial defense. They are also often hard to obtain or use in the regions where blast occurs, and must be applied well before any symptoms appear — a prohibitive expense for many farmers.

The Magnaporthe oryzae fungus is physiologically and genetically complex, so even after more than three decades, scientists do not fully understand how it interacts with wheat or which genes in wheat confer durable resistance.

Researchers from the International Maize and Wheat Improvement Center (CIMMYT) are partnering with national researchers and meteorological agencies on ways to work towards solutions to mitigate the threat of wheat blast and increase the resilience of smallholder farmers in the region. Through the USAID-supported Cereal Systems Initiative for South Asia (CSISA) and Climate Services for Resilient Development (CSRD) projects, CIMMYT and its partners are developing agronomic methods and early warning systems so farmers can prepare for and reduce the impact of wheat blast.

CIMMYT works in a global collaboration to mitigate the threat of wheat blast, funded by the Australian Centre for International Agricultural Research (ACIAR), the CGIAR Research Program on Wheat (WHEAT), the Indian Council of Agricultural Research (ICAR) and the Swedish Research Council (Vetenskapsrådet). Some of the partners who collaborate include the Bangladesh Wheat and Maize Research Institute (BWMRI), Bolivia’s Instituto Nacional de Innovación Agropecuaria y Forestal (INIAF), Kansas State University and the Agricultural Research Service of the US (USDA-ARS).