Working with smallholders to understand their needs and build on their knowledge, CIMMYT brings the right seeds and inputs to local markets, raises awareness of more productive cropping practices, and works to bring local mechanization and irrigation services based on conservation agriculture practices. CIMMYT helps scale up farmersâ own innovations, and embraces remote sensing, mobile phones and other information technology. These interventions are gender-inclusive, to ensure equitable impacts for all.
The International Maize and Wheat Improvement Center (CIMMYT) is offering a new set of elite, improved maize hybrids to partners for commercialization in southern Africa and similar agro-ecological zones. National agricultural research systems (NARS) and seed companies are invited to apply for licenses to register and commercialize these new hybrids, in order to bring the benefits of the improved seed to farming communities.
The deadline to submit applications to be considered during the first round of allocations is October, 24 2021. Applications received after that deadline will be considered during the following round of product allocations.
Information about the newly available CIMMYT maize hybrids from the Latin America breeding program, application instructions and other relevant material is available in the CIMMYT Maize Product Catalog and in the links provided below.
Specific questions or issues faced with regard to the application process may be addressed to GMP-CIMMYT@cgiar.org with attention to Nicholas Davis, Program Manager, Global Maize Program, CIMMYT.
With the past decade identified as the warmest on record and global temperatures predicted to rise by as much as 2 degrees Celsius over preindustrial levels by 2050, the worldâs staple food crops are increasingly under threat.
A new review published this month in the Journal of Experimental Botany describes how researchers from the International Maize and Wheat Improvement Center (CIMMYT) and collaborators are boosting climate resilience in wheat using powerful remote sensing tools, genomics and big data analysis. Scientists are combining multiple approaches to explore untapped diversity among wheat genetic resources and help select better parents and progeny in breeding.
The review â authored by a team of 25 scientists from CIMMYT, Henan Agricultural University, the University of Adelaide and the Wheat Initiative â also outlines how this research can be harnessed on a global level to further accelerate climate resilience in staple crops.
âAn advantage of understanding abiotic stress at the level of plant physiology is that many of the same tools and methods can be applied across a range of crops that face similar problems,â said first author and CIMMYT wheat physiologist Matthew Reynolds.
Abiotic stresses such as temperature extremes and drought can have devastating impacts on plant growth and yields, posing a massive risk to food security.
Harnessing research across a global wheat improvement network for climate resilience: research gaps, interactive goals, and outcomes.
Addressing research gaps
The authors identified nine key research gaps in efforts to boost climate resilience in wheat, including limited genetic diversity for climate resilience, a need for smarter strategies for stacking traits and addressing the bottleneck between basic plant research and its application in breeding.
Based on a combination of the latest research advances and tried-and-tested breeding methods, the scientists are developing strategies to address these gaps. These include:
Using big data analysis to better understand stress profiles in target environments and design wheat lines with appropriate heat and drought adaptive traits.
Exploring wheat genetic resources for discovery of novel traits and genes and their use in breeding.
Accelerating genetic gains through selection techniques that combine phenomics with genomics.
Crowd-sourcing new ideas and technologies from academia and testing them in real-life breeding situations.
These strategies will be thoroughly tested at the Heat and Drought Wheat Improvement Network (HeDWIC) Hub under realistic breeding conditions and then disseminated to other wheat breeding programs around the world facing similar challenges.
One factor that strongly influences the success and acceleration of climate resilience technologies, according to Reynolds, is the gap between theoretical discovery research and crop improvement in the field.
âMany great ideas on how to improve climate-resilience of crops pile up in the literature, but often remain âon the shelfâ because the research space between theory and practice falls between the radar of academia on the one hand, and that of plant breeders on the other,â Reynolds explained.
Translational research â efforts to convert basic research knowledge about plants into practical applications in crop improvement â represents a necessary link between the world of fundamental discovery and farmersâ fields and aims to bridge this gap.
Main research steps involved in translating promising technologies into genetic gains (graphical abstract, adapted from Reynolds and Langridge, 2016). Reprinted under licence CC BY-NC-ND.
The impacts of this research, conducted under HeDWIC â a project led by CIMMYT in partnership with experts around the world â will be validated on a global scale through the International Wheat Improvement Network (IWIN), with the potential to reach at least half of the worldâs wheat-growing area.
The results will benefit breeders and researchers but, most importantly, farmers and consumers around the world who rely on wheat for their livelihoods and their diets. Wheat accounts for about 20% of all human calories and protein, making it a pillar of food security. For about 1.5 billion resource-poor people, wheat is their main daily staple food.
With the world population projected to rise to almost ten billion by 2050, demand for food is predicted to increase with it. This is especially so for wheat, being a versatile crop both in terms of where it can grow and its many culinary and industrial uses. However, current wheat yield gains will not meet 2050 demand unless serious action is taken. Translational research and strategic breeding are crucial elements in ensuring that research is translated into higher and stable yields to meet these challenges.
BISA and CIMMYT gather for a virtual 10 year celebration.
A decade ago, a foundation was laid with a vision to secure food, nutrition, livelihoods, and the environment in South Asia. The Borlaug Institute of South Asia (BISA) was formed and the principles were set following the path of Norman Borlaug to translate the agrarian challenges into opportunities by collaborating with the International Maize and Wheat Improvement Center (CIMMYT) and the Indian Council of Agricultural Research (ICAR). BISA was established as an independent, non-profit research organization.
To commemorate the 10th anniversary of BISA, Bram Govaerts, Director General, CIMMYT-BISA, gathered BISA staff for a virtual celebration on 5 October 2021. He congratulated BISA colleagues and said â[âŠ] BISA has continued to expand Norman Borlaugâs vision and legacy. It has […] been committed and achieved excellence in science, seeds and partnerships by touching lives of millions of farmers and consumers.â
âPerhaps one of the most impactful outcomes of BISAâs work has been its contribution to build a strong and wide network for evaluating and disseminating new high yielding and climate-resilient wheat varieties for southern Asia in close partnership with ICAR and national agricultural research systems. CIMMYT-BISA has not only contributed towards this but will also make sure that Indiaâs farmers are the happiest. Efforts will and have been made towards their income generation, livelihood for families, a clean environment and building of future agricultural resilience,â he added.
Pramod Aggarwal, Regional Program Leader, BISA and CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), gave suggestions for the way forward and BISA’s future collaborations. He said, âItâs time to strengthen BISA and further expand it to other South Asian countries.â
Arun Joshi, Managing Director, BISA, spoke about the achievements of BISA throughout the last decade and about the establishment of the âFarms of the Futureâ. âBISA farms are equipped with state-of-the-art technology. BISAâs no residue burning, efficient resource management, precision phenotyping, climate resilient germplasm, quality seed and capacity development activities are just a few examples of BISAâs successful programs,â he said.
âBISA has been scaling climate smart agriculture technologies not only in Indian villages but to other countries of South Asia, as well, and has supported African colleagues in capacity development.â Joshi recalled the support provided by numerous funding partners, by ICAR (Government of India), state governments (Punjab, Bihar, Madhya Pradesh, Maharashtra), other governmental institutions, CIMMYTâs Board of Trustees and Management Committee team members and different research programs to strengthen BISA.
BISA’s Ludhiana team gathers for a celebration
Celebrations galore Â
In addition to the virtual celebration with the leadership of BISA and CIMMYT, numerous teams scattered across India celebrated the success and fruitful journey of BISA. The teams at BISA farms in Jabalpur (Madhya Pradesh), Pusa (Bihar), and Ludhiana (Punjab) marked the occasion by gathering at a COVID-19-appropriate distance and paid regards to Norman Borlaug and spoke about the objectives and vision of BISA.
BISA’s Jabalpur team gathers for a celebration
The New Delhi team celebrated by garlanding the statue of Borlaug, that stands in front of the office of BISA based at the National Agriculture Science Complex (NASC).
Capturing the decade-long journey
The ten-year journey of BISA is captured in “A Decade of Research in Borlaug Institute for South Asia (BISA) 2011-2021,” a research highlights report that was unveiled during the virtual celebration and that will soon be available online. Arun Joshi explained that the document encapsulates the spirit of BISA and its achievements throughout the last ten years. Its sixteen themes define the work of BISA and its reach across South Asia.
The report also informs of BISA’s outreach activities throughout the last decade and its impact on climate resilient agriculture. Themes such as âManaging Rice Residue Burningâ, âClimate Smart Village Approachâ, âPrecision Phenotyping in Wheat Breedingâ, âDeveloping Improved Crop Insurance Productsâ, âMainstreaming Gender in Climate-Resilient Agricultureâ reveal how BISA scaled up these approaches with its advanced technology mechanisms. In addition, every theme captures information related to funding and research partners.
Overall, the ten-year report is a robust document which showcases how millions of farmers in South Asia have benefitted from the strong scientific partnership of BISA and national programs.
Jannatul Ferdous Asha is a Machinery Development Officer working with CIMMYTâs Sustainable Agrifood Systems (SAS) program in Bangladesh. She joined CIMMYT in 2019.
Asha completed an undergraduate degree in agricultural engineering and a masters degree in farm power and machinery at Bangladesh Agricultural University.
In a small workshop in Ethiopiaâs Oromia region, mechanic Beyene Chufamo and his technician work on tractor repairs surrounded by engines and spare machinery parts.
Established in Meki in 2019, Beyeneâs workshop provides maintenance, repair and overhaul services for two-wheel tractors and their accessories, and it acts as a point of sale for spare parts and implements such as planters, threshers and water pumps. Beyene also works as a tractor operation instructor, providing trainings on driving, planter calibration and how to use threshers and shellers.
The city already had a well-established mechanics and spare parts industry based around four-wheel tractors and combine harvester hire services, as well as motorcycle and tricycle transportation services. But now, as market demand for two-wheel tractor hire services rises among smallholder farming communities and entrepreneurial youth race to become local service providers, business is booming.
A two-wheel tractor with an improved driver seat and hydraulic tipping trailer system sits in from of Beyene Chufamoâs workshop in Meki, Ethiopia. (Photo: CIMMYT)
Building a business
Beyeneâs business has benefitted from support from the International Maize and Wheat Improvement Center (CIMMYT) and the German development agency GIZ since its formation. Beyene was initially trained as a mechanic through the Innovative Financing for Sustainable Mechanization in Ethiopia (IFFSMIE) project, which promotes small-scale mechanization in the area through demand creation, innovative financing mechanisms and the development of private sector-driven business. He went on to receive additional technical and business skills development training to enable him to run his own enterprise.
His ongoing association with the project and its new leasing scheme has helped Beyene establish connections with local service providers, while also improving his own skills portfolio. Currently, he helps maintain the smooth operation of machinery and equipment at CIMMYT project sites in Amhara, Oromia and Tigray. This involves everything from training other local mechanics and troubleshooting for service providers, to facilitating the delivery of aftersales services in project areas.
In addition to this, Beyene receives orders for maintenance, repair and overhaul services for two-wheel tractors and implements. He sources replacement parts himself, though the cost of purchase is covered by his clients. In some cases â and depending on the distance travelled â CIMMYT covers the transport and accommodation costs while Beyene services equipment from service providers and sources equipment from local distributors. When individual parts are not readily available, he often purchases whole two-wheel tractors from the Metals and Engineering Corporation (METEC) and breaks them down into individual parts.
Tools and spare machinery parts lie on the ground during at Beyene Chufamoâs workshop in Meki, Ethiopia. (Photo: CIMMYT)
The way forward for sustainable mechanization
âMechanization take-off relies heavily on skilled staff and appropriate infrastructure to perform machinery diagnostics, repair and maintenance,â said Rabe Yahaya, a CIMMYT agricultural mechanization expert based in Ethiopia.
âAgricultural machinery should be available and functional any time a famer wants to use it â and a workshop can support this. Beyeneâs work in Meki reflects the way forward for sustainable mechanization success in Ethiopia.â
Creating an agricultural machinery workshop from scratch was a challenging task, Rabe explained, but support and guidance from partners like CIMMYT and GIZ helped to make it happen. âAlso, Beyeneâs commitment and flexibility to travel to CIMMYT project sites anywhere and at any time â even on bad roads in difficult weather conditions â really helped him achieve his goal.â
A sign hangs on the entrance of Beyene Chufamoâs agricultural machinery workshop in Meki, Ethiopia. (Photo: CIMMYT)
Beyene is excited about how quickly the local two-wheel tractor market has grown in the past few years. He currently has 91 service providers as regular clients at CIMMYT project sites â up from just 19 in 2016.
Trends show that â with support from local microfinance schemes and the removal of domestic taxes on imported machinery â aftersales services will continue to evolve, and the number of service providers will rise alongside increased market demand for mechanization services, both at farm level and beyond.
With this in mind, Beyene aims to remain competitive by diversifying the services offered at his workshop and expanding his business beyond CIMMYT project sites. As a starting point he plans to hire more staff, altering his organizational structure so that each mechanic or technician is dedicated to working with a specific type of machinery. Longer term, he hopes to transform his workshop into one that can also service four-wheel tractors and combine harvesters, and establish a mobile dispatch service team that can reach more locations in rural Ethiopia.
For now, however, he simply remains grateful for CIMMYTâs support and investment in his business. âI am happy that I have been able to secure an income for myself, my family and my staff through this workshop, which has changed our lives in such a positive way.â
Cover photo: Workshop owner Beyene Chufamo (left) speaks to CIMMYT researcher Abrham Kassa during a visit to Meki, Ethiopia. (Photo: CIMMYT)
A CIMMYT researcher and a field worker lay out wheat seed for planting at the center’s headquarters in Texcoco, Mexico. In experimental trials, hundreds or thousands of wheat lines are planted for evaluation, each in small quantities, and so they are carefully laid out and sown by hand. (Photo: CIMMYT)
To help feed a growing world population, wheat scientists have turned to innovative technologies like genomic selection to hasten selection for positive traits â such as high grain yield performance and good grain quality â in varieties that are still undergoing testing. Instead of being shackled by the long duration of traditional breeding cycles, genomic selection allows scientists to make predictions regarding which traits will present when crossing two varieties; allowing breeders greater guidance and lessening potential time lost when crossing varieties that do not display potential for genetic gain. To reap the benefits of genomic selection, it is vital that the predictive models employed are as accurate as possible.
Currently, wheat breeders select characteristics like grain yield performance early in the breeding process, while selecting traits like good grain quality at a later stage in the breeding process.
Considering two or more traits, like grain yield and good grain quality, is an example of a multi-trait model. The team examined this multi-trait model against a single trait model that improves one specific trait. Overall, the researchers found that prediction performance was highest using the multi-trait model.
However, the team also demonstrated that when breeding programs arrive at their genetic predictions, applying a specific correction method will account for differences between the predicted breeding value and the actual observed breeding value. Current correction models tend to underestimate that difference, which results in breeding programs not running as efficiently as possible.
By partnering selections from different stages in the breeding process and examining the resulting genetic predictions through a more appropriate correction model, the team has shown that breeding programs can use this to their benefit in developing and ultimately releasing improved wheat varieties that meet growing yield needs worldwide and respond to abiotic and biotic stressors.
Gyanendra Pratap Singh (center), Director of ICAR-IIWBR, presents at the 60th All India Wheat and Barley Research Workersâ Meet. (Photo: Courtesy of ICAR-IIWBR)
The International Maize and Wheat Improvement Centerâs (CIMMYT) legacy of work with the Indian Centre for Agricultural Research (ICAR) has once again produced more successful collaborations this year. This solid partnership resulted in the release of new varieties poised to bring new, superior yielding, disease-resistant, high-quality wheat varieties suitable for different production environments to Indian farms.
The National Variety Release Committee announced the release of nine new varieties at the 60th All India Wheat and Barley Research Workersâ Virtual Meet on August 23â24, 2021, hosted by the Indian Institute of Wheat and Barley Research (IIWBR) of ICAR. Of the nine new varieties identified, five were selected by national partners from CIMMYT international trials and nurseries.
At the event, ICAR-IIWBR director Gyanendra Pratap (GP) Singh highlighted the impressive growth trajectory of Indiaâs wheat production, estimated at 109.52 million tons of wheat harvested in 2021, a figure which was 86.53 million tons in 2015 and less than 60 million tons in 1991. Singh highlighted that this success is dependent upon the deployment of superior wheat varieties, bridging yield and information gaps, strengthened seed value chain, supportive government policies and, of course, farmer support to adopt new varieties and technologies.
The CIMMYT-derived varieties announced at the meeting include DBW296, DBW327, DBW332, HUW296 and JKW261. A few days earlier, variety PBW869 was released by the Punjab Agricultural University for growing in Punjab State under conservation agriculture practices.
âAn innovative and powerful feature of ICAR-CIMMYT collaboration has been the introduction of long-term (10-month) rotational involvement of Indian young scientists in CIMMYTs breeding program at Mexico as well as in wheat blast screening in Bolivia,â said Arun Joshi, CIMMYT Regional Representative for Asia and Managing Director, Borlaug Institute for South Asia (BISA). âIn this way, the breeding program of CIMMYT is an excellent example of joint breeding program with national institutions.â
At the 60th All India Wheat and Barley Research Workersâ Meet, participants highlighted new varieties, production growth and strengthened collaboration. (Photo: CIMMYT)
Beyond expectations
In addition to these important new wheat varieties, some CIMMYT-derived wheat varieties that were released in recent years have now been deemed suitable for regions beyond their initial region of cultivation, showing wide adaptation and yield stability.
Wheat variety DBW222, released in 2020 for the northwestern plain zone, has now been deemed suitable for cultivation in the northeastern plain zone. Similarly, DBW187, which was initially released for the northeastern plain zone, and then for northwestern plain zone as well for early sowing, is now also extended for sowing in the central zone, together representing 25 million hectares of the 31 million hectares of wheat grown in India.
âFarmers prefer these types of varieties that give them flexibility during sowing time, and have high, stable yields, and disease resistance,â GP Singh said at the meeting.
A major achievement discussed at this yearâs event was that three of the new varieties â DBW187, DBW303 and DBW222 â achieved record-high demand in Breeders Seed Indent, with first, second and seventh ranks, respectively. This is a reflection and indirect measure of popularity and demand for a variety. IIWBRâs innovative strategy to implement pre-release seed multiplication and create demand for seeds from new varieties has led to a faster turnover of improved varieties.
According to Ravi Singh, Distinguished Scientist and Head of Global Wheat Improvement at CIMMYT, the collaborators are âfurther expanding our partnership through the support from the Accelerating Genetic Gains in Maize and Wheat (AGG) and zinc-mainstreaming projects, to expand testing of larger sets of elite lines in targeted populations of environments of the four South Asian countries where various IIBWR-affiliated institutions shall expand testing in the 2021â22 crop season.â CIMMYT looks forward to continuing ongoing and new collaborations with the ICAR-IIWBR programs to deliver even faster genetic gain for yield and grain zinc levels in new varieties, he explained.
Speaking during the meeting Alison Bentley, Director of CIMMYTâs Global Wheat Program, highlighted the collaborative efforts underway as part of the AGG project to accelerate breeding progress. âInnovations and discoveries in breeding approaches are being rapidly made â with further investment needed â to quickly and equitably accumulate and deploy them to farmers,â she said.
Given the very heterogeneous conditions in smallholder agriculture in sub-Saharan Africa, there is a growing policy interest in site-specific extension advice and the use of related digital tools. However, empirical ex ante studies on the design of this type of tools are scant and little is known about their impact on site-specific extension advice.
In partnership with Oyakhilomen Oyinbo and colleagues at KU Leuven, scientists at the International Maize and Wheat Improvement Center (CIMMYT) have carried out research to clarify user preferences for tailored nutrient management advice and decision-support tools. The studies also evaluated the impact of targeted fertilizer recommendations enabled by such tools.
Understanding farmersâ adoption
A better understanding of farmersâ and extension agentsâ preferences may help to optimize the design of digital decision-support tools.
Oyinbo and co-authors conducted a study among 792 farming households in northern Nigeria, to examine farmersâ preferences for maize intensification in the context of site-specific extension advice using digital tools.
Overall, farmers were favorably disposed to switch from general fertilizer use recommendations to targeted nutrient management recommendations for maize intensification enabled by decision-support tools. This lends credence to the inclusion of digital tools in agricultural extension. The study also showed that farmers have heterogeneous preferences for targeted fertilizer recommendations, depending on their resources, sensitivity to risk and access to services.
The authors identified two groups of farmers with different preference patterns: a first group described as âstrong potential adopters of site-specific extension recommendations for more intensified maize productionâ and a second group as âweak potential adopters.â While the two groups of farmers are willing to accept some yield variability for a higher average yield, the trade-off is on average larger for the first group, who have more resources and are less sensitive to risk.
The author recommended that decision-support tools include information on the riskiness of expected investment returns and flexibility in switching between low- and high-risk recommendations. This design improvement will help farmers to make better informed decisions.
Community leaders talk to researchers in one of the villages in norther Nigeria which took part in the study. (Photo: Oyakhilomen Oyinbo)
Members of the survey team participate in a training session at Bayero University Kano, Nigeria. (Photo: Oyakhilomen Oyinbo)
One of the sites of nutrient omission trials, used during the development phase of the Nutrient Expert tool in Nigeria. (Photo: Oyakhilomen Oyinbo)
Using data from a discrete choice experiment, the study showed that extension agents were generally willing to accept the use of digital decision-support tools for siteâspecific fertilizer recommendations. While extension agents in the sample preferred tools with a more userâfriendly interface that required less time to generate an output, the authors also found substantial preference heterogeneity for other design features. Some extension agents cared more about the outputs, such as information accuracy and level of detail, while others prioritized practical features such as the toolâs platform, language or interface.
According to the authors, accounting for such variety of preferences into the design of decision-support tools may facilitate their adoption by extension agents and, in turn, enhance their impact in farmarsâ agricultural production decisions.
Interface of the Nutrient Expert mobile app, locally calibrated for maize farmers in Nigeria.
Impact of digital tools
Traditional extension systems in sub-Saharan African countries, including Nigeria, often provide general fertilizer use recommendations which do not account for the substantial variation in production conditions. Such blanket recommendations are typically accompanied by point estimates of expected agronomic responses and associated economic returns, but they do not provide any information on the variability of the expected returns associated with output price risk.
Policymakers need a better understanding of how new digital agronomy tools for tailored recommendations affect the performance of smallholder farms in developing countries.
To contribute to the nascent empirical literature on this topic, Oyinbo and colleagues evaluated the impact of a nutrient management decision-support tool for maize â Nutrient Expert â on fertilizer use, management practices, yields and net revenues. The authors also evaluated the impacts of providing information about variability in expected investment returns.
To provide rigorous evidence, the authors conducted a three-year randomized controlled trial among 792 maize-producing households in northern Nigeria. The trial included two treatment groups who are exposed to site-specific fertilizer recommendations through decision-support tools â one with and another one without additional information on variability in expected returns â and a control group who received general fertilizer use recommendations.
Overall, the use of nutrient management decision-support tools resulted in greater fertilizer investments and better grain yields compared with controls. Maize grain yield increased by 19% and net revenue increased by 14% after two years of the interventions. Fertilizer investments only increased significantly among the farmers who received additional information on the variability in expected investment returns.
The findings suggest including site-specific decision support tools into extension programming and related policy interventions has potential benefits on maize yields and food security, particularly when such tools also supply information on the distribution of expected returns to given investment recommendations.
The research-for-development community has tried different approaches to optimize fertilizer recommendations. In Nigeria, there are several tools available to generate location-specific fertilizer recommendations, including Nutrient Expert. As part of the Taking Maize Agronomy to Scale in Africa (TAMASA) project, CIMMYT has been working on locally calibrated versions of this tool for maize farmers in Ethiopia, Nigeria and Tanzania. The development was led by a project team incorporating scientists from the African Plant Nutrition Institute (APNI), CIMMYT and local development partners in each country.
Next steps
Some studies have shown that dis-adoption of seemingly profitable technologies â such as fertilizer in sub-Saharan Africa â is quite common, especially when initial returns fall short of expectations or net utility is negative, producing a disappointment effect.
In the context of emerging digital decision-support tools for well-targeted fertilizer use recommendations, it remains unclear whether farmersâ initial input use responses and the associated economic returns affect their subsequent responses â and whether the disappointment effect can be attenuated through provision of information about uncertainty in expected returns.
Using our three-year randomized controlled trial and the associated panel dataset, researchers are now working on documenting the third-year responses of farmers to site-specific agronomic advice conditional on the second-year responses. Specifically, they seek to better document whether providing farmers with information about seasonal variability in expected investment returns can reduce possible disappointment effects associated with their initial uptake of site-specific agronomic advice and, in a way, limit dis-adoption of fertilizer.
Cover photo: A farmer shows maize growing in his field, in one of the communities in northern Nigeria where research took place. (Photo: Oyakhilomen Oyinbo)
In Nepal, agriculture contributes to a third of gross domestic product and employs about 80% of the rural labor force. The rural population is comprised mostly of smallholder farmers whose level of income from agricultural production is low by international standards and the country‘s agricultural sector has become vulnerable to erratic monsoon rains. Farmers often experience unreliable rainfall and droughts that threaten their crop yields and are not resilient to climate change and water-induced hazard. This requires a rapid update of the sustainable irrigation development in Nepal. The Cereal Systems Initiative for South Asia (CSISA) Nepal COVID Response and Resilience short-term project puts emphasis on identifying and prioritizing entry points to build more efficient, reliable and flexible water services to farmers by providing a fundamental irrigation development assessment and framework at local, district and provincial levels.
Digital groundwater monitoring system and assessment of water use options
Digital system of groundwater data collection, monitoring and representation will be piloted with the government of Nepal to facilitate multi-stakeholder cooperation to provide enabling environments for inclusive irrigation development and COVID-19 response. When boosting the irrigation development, monitoring is fundamental to ensure sustainability. In addition, spatially targeted, ex-ante assessments of the potential benefits of irrigation interventions provide insights by applying machine-learning analytics and constructing data-driven models for yield and profitability responses to irrigation. Furthermore, a customized set of integrated hydrological modeling and scenario analyses can further strengthen local, district and provincial level assessment of water resources and how to build resilient and sustainable water services most productively from them.
Toward a systemic framework for sustainable scaling of irrigation in Nepal
Through interview and surveys, the project further builds systemic understanding of the technical, socioeconomic and institutional challenges and opportunities in scaling water access and irrigation technologies. This will contribute to the construction of a comprehensive irrigation development framework, achieved by the collective efforts from multiple stakeholders across different line ministries, levels of government and local stakeholders and water users. Together with the technical assessments and monitoring systems, the end goal is to provide policy guidelines and engage prioritized investments that ensure and accelerate the process of sustainable intensification in irrigation in Nepal.
An international collaboration has discovered a biological nitrification inhibition (BNI) trait that, when transferred to growing wheat varieties, can reduce the use of fertilizers for wheat crops and increase yields.
CGIAR turned 50 in 2021. To mark this anniversary, two independent and highly reputed experts have authored a history of CGIAR maize research from 1970 to 2020.
The authors, Derek Byerlee and Greg Edmeades, focused on four major issues running through the five decades of CGIAR maize research: the diversity of maize-growing target environments, the role of the public and private sectors in maize research in the tropics, the approaches adopted in reaching smallholder farmers in stress-prone rainfed tropical environments with improved technologies, and the need for maintaining strong financial support for international maize research efforts under the CGIAR.
The work of the International Maize and Wheat Improvement Center (CIMMYT), the International Institute of Tropical Agriculture (IITA) and the CGIAR Research Program on Maize (MAIZE) and its partners features prominently in this account. The authors also reviewed the history of maize policy research undertaken by the International Food Policy Research Institute (IFPRI).
The authors bring a unique perspective to the challenging task of tracing the evolution of maize research in CGIAR as both âinsidersâ and âoutsiders.â While they worked as CIMMYT researchers in the 1990s, and later on as reviewers of various projects/programs, both are currently unaffiliated with CIMMYT. Byerlee is affiliated with the School of Foreign Service at Georgetown University, Washington DC, USA, and Edmeades is an independent scholar based in New Zealand.
âA clear-eyed and unbiased appreciation of our past â both successes and missteps â can only enrich our efforts, make better progress, and effectively meet the challenges of the present and the future,â wrote B.M. Prasanna, director of CIMMYTâs Global Maize Program and of the CGIAR Research Program MAIZE , in the foreword.
According to Prasanna, âThe challenges to the maize-dependent smallholders in the tropics are far from over. Optimal, stable and long-term investment in international maize improvement efforts is critical.â
Disclaimer: The CGIAR Research Program MAIZE supported only the review, formatting, and online publication of this document. The findings and conclusions are completely of the authors, and do not necessarily represent the institutional views of CIMMYT, IITA, IFPRI or CGIAR and its partners.
An international collaboration has discovered and transferred to elite wheat varieties a wild-grass chromosome segment that causes roots to secrete natural inhibitors of nitrification, offering a way to dial back on heavy fertilizer use for wheat and to reduce the cropâs nitrogen leakage into waterways and air, while maintaining or raising its productivity and grain quality, says a new report in the Proceedings of the National Academy of Sciences of the United States of America.
Growing wheat varieties endowed with the biological nitrification inhibition (BNI) trait could increase yields in both well-fertilized and nitrogen-poor soils, according to G.V. Subbarao, researcher at the Japan International Research Center for Agricultural Sciences (JIRCAS) and first author of the new report.
âUse of wheat varieties that feature BNI opens the possibility for a more balanced and productive mix of nitrogen nutrients for wheat fields, which are currently dominated by highly-reactive nitrogen compounds that derive in large part from synthetic fertilizers and can harm the environment,â Subbarao said.
The most widely grown food crop on the planet, wheat is consumed by over 2.5 billion people in 89 countries. Nearly a fifth of the worldâs nitrogen-based fertilizer is deployed each year to grow wheat but, similar to other major cereals, vegetables, and fruits, the crop takes up less than half of the nitrogen applied.
Much of the remainder is either washed away, contaminating ground waters with nitrate and contributing to algae blooms in lakes and seas, or released into the air, often as nitrous oxide, a greenhouse gas 300 times more potent than carbon dioxide.
The study team first homed in on the chromosome region associated with the strong BNI capacity in the perennial grass species Leymus racemosus and moved it from the grass, using âwide crossingâ techniques, into the cultivar Chinese Spring, a wheat landrace often used in genetic studies. From there, they transferred the BNI chromosome sequence into several elite, high-yielding wheat varieties, leading to a near doubling of their BNI capacity, as measured through lab analyses of soil near their roots.
The new wheats â elite varieties from the International Maize and Wheat Improvement Center (CIMMYT) into which the BNI trait was cross-bred â greatly reduced the action of soil microbes that usually convert fertilizer and organic nitrogen substances into ecologically-harmful compounds such as nitrous oxide gas, according to Hannes Karwat, a CIMMYT post-doctoral fellow and study co-author.
âThe altered soil nitrogen cycle was even reflected in the plantsâ metabolism,â Karwat said, âresulting in several responses indicative of a more balanced nitrogen uptake in the plants.â
The scientists involved said BNI-converted wheats in this study also showed greater overall biomass and grain yield, with no negative effects on grain protein levels or breadmaking quality.
âThis points the way for farmers to feed future wheat consumers using lower fertilizer dosages and lowering nitrous oxide emissions,â said Masahiro Kishii, a CIMMYT wheat cytogeneticist who contributed to the research. âIf we can find new BNI sources, we can develop a second generation of elite wheat varieties that require even less fertilizer and that better deter nitrous oxide emissions.â
A recent PNAS paper by Subbarao and Princeton University scientist Timothy D. Searchinger mentions BNI as a technology that can help foster soils featuring a more even mix of nitrogen sources, including more of the less-chemically-reactive compound ammonium, a condition that can raise crop yields and reduce nitrous oxide emissions.
CIMMYT researcher Masahiro Kishii examines wheat plants in a greenhouse. (Photo: CIMMYT)
Scale out to slow global warming?
The present study comes just as the Intergovernmental Panel on Climate Change (IPCC) has released its Sixth Assessment Report, which among other things states that â⊠limiting human-induced global warming ⊠requires limiting cumulative CO2 emissions ⊠along with strong reductions in other greenhouse gas emissions.â
Globally, 30% of greenhouse gas emissions come from agriculture. BNI-enabled wheat cultivars can play an important role to reduce that footprint. Wheat-growing nations that have committed to the Paris Climate Accord, whose provisions include reducing greenhouse gas emissions 30% by 2050, could be early adopters of the BNI technology, together with China and India, the worldâs top two wheat producers, according to Subbarao.
âThis work has demonstrated the feasibility of introducing BNI-controlling chromosome segments into modern wheats, without disrupting their yields or quality,â said Subbarao. âTo realize the technologyâs full potential, we need to transfer the BNI feature into many elite varieties adapted to diverse wheat growing areas and to assess their yield in many farm settings and with varying levels of soil pH, fertilization and water use.â
A project to establish nitrogen-efficient wheat production systems in the Indo-Gangetic Plains using BNI has recently been approved by Japan and is under way, with the collaboration of JIRCAS, the Indian Council of Agricultural Research (ICAR), and the Borlaug Institute of South Asia (BISA). Under the project, BNI-converted wheat lines developed from JIRCAS-CIMMYT partnerships will be tested in India and the BNI trait transferred to popular national wheat varieties.
âAdaptation and mitigation solutions such as BNI, which help lessen the footprint of food production systems, will play a large role in CGIAR research-for-development, as part of One CGIAR Initiatives starting in 2022,â said Bram Govaerts, CIMMYT Director General.
Ridderâs smart technology is used by CIMMYT scientists to develop wheat and maize varieties that boost production, prevent crop disease and improve smallholder farmersâ livelihood.
The International Maize and Wheat Improvement Center (CIMMYT) is offering a new set of elite, improved maize hybrids to partners for commercialization in the tropical lowlands of Latin America and similar agro-ecological zones. National agricultural research systems (NARS) and seed companies are invited to apply for licenses to commercialize these new hybrids, in order to bring the benefits of the improved seed to farming communities. In some countries, depending on the applicable regulatory framework for commercial maize seed, successful applicants may first need to sponsor the products through the national registration / release process prior to commercialization.
The deadline to submit applications to be considered during the first round of allocations is September17, 2021. Applications received after that deadline will be considered during the following round of product allocations.
Information about the newly available CIMMYT maize hybrids from the Latin America breeding program, application instructions and other relevant material is available in the CIMMYT Maize Product Catalog and in the links provided below.
Applications must be accompanied by a proposed commercialization plan for each product being requested. Applications may be submitted online via the CIMMYT Maize Licensing Portal in English or Spanish.
Alternatively, applications may be submitted via email to GMP-CIMMYT@cgiar.org using the PDF forms available for download at the links below. Each applicant will need to complete one copy of Form A for their organization, then for each hybrid being requested a separate copy of Form B. (Please be sure to use these current versions of the application forms.)
The International Maize and Wheat Improvement Center (CIMMYT) is offering a new set of elite, improved maize hybrids to partners for commercialization in southern Africa and similar agro-ecological zones. National agricultural research systems (NARS) and seed companies are invited to apply for licenses to register and commercialize these new hybrids, in order to bring the benefits of the improved seed to farming communities.
