The Novo Nordisk Foundation and CIMMYT have launched the 4-year CropSustaiN initiative to determine the global potential of wheat that is significantly better at using nitrogen, thanks to Biological Nitrification Inhibition (BNI)âand to accelerate breeding and farmer access to BNI wheat varieties.
With a budget of US$ 21 million, CropSustaiN addresses the pressing challenges of nitrogen pollution and inefficient fertilizer use, which contribute to greenhouse gas (GHG) emissions and ecological degradation. Currently, no other seed or agronomic practice-based solution matches BNI cropsâ mitigation impact potential. Growing BNI crops can complement other climate mitigation measures.
The challenge
Agriculture is at the heart of both food and nutrition security and environmental sustainability. The sector contributes ca. 10-12% of global GHG emissions, including 80% of the highly potent nitrous oxide (N2O) emissions. Fertilizer use contributes to such N losses, because plants take up about 50%, the remainder being lost. Wheat is the world’s largest âcropâ consumer of nitrogen-based fertilizerâa relatively nitrogen-inefficient cerealâat the same time providing affordable calories to billions of resource-poor people and ca. 20% of globally consumed protein. CropSustaiN targets this nexus of productivity and planetary boundary impact by verifying and thus de-risking the needed breeding, agronomic, and social innovations.
A solution: BNI-wheat
BNI is a natural ability of certain plant species to release metabolites from their roots into the soil. They influence the nitrogen-transforming activity of nitrifying bacteria, slowing down the conversion of ammonium to nitrate in the soil. This preserves soil ammonium levels for a longer time, providing plants with a more sustained source of available nitrogen and making them more nitrogen-use efficient (nitrogen plant use efficiency). As a result, BNI helps reduce the release of N2O gas emissions and nitrate leaching to the surrounding ecosystem.
A research breakthrough in 2021, led by the Japan International Research Center of Agricultural Sciences (JIRCAS) in collaboration with CIMMYT, demonstrated that the BNI trait can be transferred from a wheat wild relative to a modern wheat variety by conventional breeding. BNI wheat can be made available to farmers worldwide.
Growing BNI wheat could reduce nitrogen fertilizer usage by 15-20%, depending on regional farming conditions, without sacrificing yield or quality.
Incorporating BNI into additional crops would reduce usage further. Farmers can get the same yield with less external inputs.
Other BNI-crops
CropSustaiN will work on spring and winter wheats. Rice, maize, barley, and sorghum also have BNI potential. CropSustaiN will build the knowledge base and share with scientists working on other crops and agronomic approaches.
Objectives and outcomes
This high risk, high reward mission aims to:
Verify the global, on-farm potential of BNI-wheat through field trial research and breeding.
Build the partnerships and pathways to meet farmer demand for BNI-wheat seeds.
Work with stakeholders on policy change that enables BNI crops production and markets
Success will be measured by determining nitrogen pollution reduction levels under different soil nitrogen environments and management conditions on research stations, documenting crop performance and safety, breeding for BNI spring and winter wheats for a wide range of geographies, and gauging farmer needs, interest, and future demand.
Wheat spikes against the sky at CIMMYT’s El BatĂĄn, Mexico headquarters. (Photo: H. Hernandez Lira/CIMMYT)
A collaborative effort
CIMMYT is the lead implementer of Novo Nordisk Foundationâs mission funding. CropSustaiNâs interdisciplinary, intersectoral, systems approach relies on building partnerships and knowledge-sharing within and outside this research initiative. 45+ partners are engaged in CropSustaiN.
The potential GHG emissions reduction from deploying BNI-wheat is estimated to be 0.016-0.19 gigatonnes of CO2-equivalent emissions per year, reducing 0.4-6% of total global N2O emissions annually, plus a lowering of nitrate pollution.
Impact on climate change mitigation and Nationally Determined Contributions (NDCs)
The assumption is that BNI wheat is grown in all major wheat-growing areas and that farmers will practice a behavioral shift towards lower fertilizer use and higher fertilizer use efficiency. That could lead to ca. a reduction of 17 megatons per year globally. This can help nations achieve their NDCs under the Paris Agreement.
International public goods, governance, and management
CIMMYT and the Foundation are committed to open access and the dissemination of seeds, research data, and results as international public goods. The governance and management model reinforces a commitment to equitable global access to CropSustaiN outputs, emphasized in partnership agreements and management of intellectual property.
Invitation to join the mission
The CropSustaiN initiative is a bold step towards agricultural transformation. You are invited to become a partner. You can contribute to the mission with advice, by sharing methods, research data and results, or becoming a co-founder.
Please contact CropSustaiN Mission Director, Victor Kommerell, at v.kommerell@cgiar.org or Novo Nordisk Foundationâs Senior Scientific Manager, Jeremy A. Daniel, at jad@novo.dk.
Participants at the mid-term review and planning meeting on the Guiding Acid Soil Management Investments in Africa (GAIA) project. Photo CIMMYT
The International Maize and Wheat Improvement Center (CIMMYT) and the Rwanda Agriculture and Animal Resources Development Board (RAB) recently held a mid-term review and planning meeting on the Guiding Acid Soil Management Investments in Africa (GAIA) project.
The meeting aimed to track the progress made in the first year of the projectâs implementation, identify challenges, document lessons learned, and develop an action plan for the following year, based on identified gaps and priorities.
In his welcoming remarks, RAB Director General Patrick Karangwa highlighted the close partnership between the two institutions.
âThe workshop is not only about reviewing the progress but also about creating a strong partnership and interaction with each other to form a lasting togetherness that can later be useful for supporting each other in running the programâs activities of GAIA in the region,â he said.
Karangwa also noted the dynamism and enthusiasm of the GAIA team and partners, who made âremarkable successesâ during a challenging period due to the COVID-19 pandemic.
Along with plant nutrition and improved land management, healthier soils contribute to more productive and profitable smallholder enterprises. The GAIA project uses scalable innovations to provide reliable, timely and actionable data and insights on soil health and crop performance, at farm and regional levels.
The workshop brought together about 49 participant including regional program implementing partners, key stakeholders, and scientists from Ethiopia, Kenya, Rwanda, Tanzania, and Zimbabwe to  participate in more than 20 face-to-face and virtual presentations,  breakout sessions, and team-building exercises.
âThe key to project success is a strong partnership and collaboration with national and regional partners, particularly with private and public sectors ââ said  Sieglinde Snapp, the director of the Sustainable Agrifood Systems (SAS) program at CIMMYT.
The participants addressed the work undertaken around eight work packages: spatial ex-ante analysis, adoption research on lime value chains, agronomy research for lime recommendations, support to the lime sector, policy support, coordination and advocacy, data use and management, and communication.
GAIA is funded by the Bill and Melinda Gates Foundation and implemented by CIMMYT in partnership with the Centre for Agriculture and Bioscience International; Dalberg; national agricultural research systems in Ethiopia, Kenya, Rwanda, and Tanzania; the Southern Agricultural Growth Corridor of Tanzania; Wageningen University; and the University of California – Davis. The project aims to provide data-driven and spatially explicit recommendations to increase returns on investment for farmers, the private sector, and governments in Africa.
A climate change hotspot region that features both small-scale and intensive farming, South Asia epitomizes the crushing pressure on land and water resources from global agriculture to feed a populous, warming world. Continuous irrigated rice and wheat cropping across northern India, for example, is depleting and degrading soils, draining a major aquifer, and producing a steady draft of greenhouse gases.
Through decades-long Asian and global partnerships, the International Maize and Wheat Improvement Center (CIMMYT) has helped to study and promote resource-conserving, climate-smart solutions for South Asian agriculture. Innovations include more precise and efficient use of water and fertilizer, as well as conservation agriculture, which blends reduced or zero-tillage, use of crop residues or mulches as soil covers, and more diverse intercrops and rotations. Partners are recently exploring regenerative agriculture approaches â a suite of integrated farming and grazing practices to rebuild the organic matter and biodiversity of soils.
Along with their environmental benefits, these practices can significantly reduce farm expenses and maintain or boost crop yields. Their widespread adoption depends in part on enlightened policies and dedicated promotion and testing that directly involves farmers. We highlight below promising findings and policy directions from a collection of recent scientific studies by CIMMYT and partners.
Getting down in the dirt
A recent scientific review examines the potential of a suite of improved practices â reduced or zero-tillage with residue management, use of organic manure, the balanced and integrated application of plant nutrients, land levelling, and precise water and pest control â to capture and hold carbon in soils on smallholder farms in South Asia. Results show a potential 36% increase in organic carbon in upper soil layers, amounting to some 18 tons of carbon per hectare of land and, across crops and environments, potentially cutting methane emissions by 12%. Policies and programs are needed to encourage farmers to adopt such practices.
Another study on soil quality in Indiaâs extensive breadbasket region found that conservation agriculture practices raised per-hectare wheat yields by nearly half a ton and soil quality indexes nearly a third, over those for conventional practices, as well as reducing greenhouse gas emissions by more than 60%.
Ten years of research in the Indo-Gangetic Plains involving rice-wheat-mungbean or maize-wheat-mungbean rotations with flooded versus subsoil drip irrigation showed an absence of earthworms â major contributors to soil health â in soils under farmersâ typical practices. However, large earthworm populations were present and active under climate-smart practices, leading to improved soil carbon sequestration, soil quality, and the availability of nutrients for plants.
The field of farmer Ram Shubagh Chaudhary, Pokhar Binda village, Maharajganj district, Uttar Pradesh, India, who has been testing zero tillage to sow wheat directly into the unplowed paddies and leaving crop residues, after rice harvest. Chaudhary is one of many farmer-partners in the Cereal Systems Initiative for South Asia (CSISA), led by CIMMYT. (Photo: P. Kosina/CIMMYT)
Rebooting marginal farms by design
Using the FarmDESIGN model to assess the realities of small-scale, marginal farmers in northwestern India (about 67% of the population) and redesign their current practices to boost farm profits, soil organic matter, and nutritional yields while reducing pesticide use, an international team of agricultural scientists demonstrated that integrating innovative cropping systems could help to improve farm performance and household livelihoods.
More than 19 gigatons of groundwater is extracted each year in northern India, much of this to flood the regionâs puddled, transplanted rice crops. A recent experiment calibrated and validated the HYDRUS-2D model to simulate water dynamics for puddled rice and for rice sown in non-flooded soil using zero-tillage and watered with sub-surface drip irrigation. It was found that the yield of rice grown using the conservation agriculture practices and sub-surface drip irrigation was comparable to that of puddled, transplanted rice but required only half the irrigation water. Sub-surface drip irrigation also curtailed water losses from evapotranspiration and deep drainage, meaning this innovation coupled with conservation agriculture offers an ecologically viable alternative for sustainable rice production.
Given that yield gains through use of conservation agriculture in northern India are widespread but generally low, a nine-year study of rice-wheat cropping in the eastern Indo-Gangetic Plains applying the Environmental Policy Climate (EPIC) model, in this case combining data from long-term experiments with regionally gridded crop modeling, documented the need to tailor conservation agriculture flexibly to local circumstances, while building farmersâ capacity to test and adapt suitable conservation agriculture practices. The study found that rice-wheat productivity could increase as much as 38% under conservation agriculture, with optimal management.
Key partner organizations in this research include the following: Indian Council of Agricultural Research (ICAR); Central Soil Salinity Research Institute (CSSRI), Indian Agricultural Research Institute (IARI), Indian Institute of Farming Systems Research (IIFSR), Agriculture University, Kota; CCS Haryana Agricultural University, Hisar; Punjab Agricultural University, Ludhiana; Sri Karan Narendra Agriculture University, Jobner, Rajasthan; the Borlaug Institute for South Asia (BISA); the Trust for Advancement of Agricultural Sciences, Cornell University; Damanhour University, Damanhour, Egypt; UM6P, Ben Guerir, Morocco; the University of Aberdeen; the University of California, Davis; Wageningen University & Research; and IFDC.
Generous funding for the work cited comes from the Bill & Melinda Gates Foundation, The CGIAR Research Programs on Wheat Agri-Food Systems (WHEAT) and Climate Change, Agriculture and Food Security (CCAFS), supported by CGIAR Fund Donors and through bilateral funding agreements), The Indian Council of Agricultural Research (ICAR), and USAID.
Cover photo: A shortage of farm workers is driving the serious consideration by farmers and policymakers to replace traditional, labor-intensive puddled rice cropping (shown here), which leads to sizable methane emissions and profligate use of irrigation water, with the practice of growing rice in non-flooded soils, using conservation agriculture and drip irrigation practices. (Photo: P. Wall/CIMMYT)
Written by Bea Ciordia on . Posted in Uncategorized.
The Mining Useful Alleles for Climate Change Adaptation from CGIAR Genebanks project, led by the International Maize and Wheat Improvement Center (CIMMYT), is expanding the use of biodiversity held in the worldâs genebanks to develop new climate-smart crop varieties for millions of small-scale farmers worldwide. It aims to identify plant accessions in genebanks that contain alleles, or gene variations, responsible for characteristics such as heat, drought or salt tolerance, and to facilitate their use in breeding climate-resilient crop varieties.
Through this project, breeders will learn how to use genebank materials more effectively and efficiently to develop climate-smart versions of important food crops, including cassava, maize, sorghum cowpea, and rice.
Building on 10 years of support to CIMMYT from the Mexican government, CGIAR Trust Fund contributors, and the UK Biotechnology and Biological Sciences Research Council, the Mining Useful Alleles for Climate Change Adaptation from CGIAR Genebanks project combines the use of cutting-edge technologies and approaches, high-performance computing, GIS mapping, and new plant breeding methods to identify and use accessions with high value for climate-adaptive breeding of varieties needed by farmers and consumers.
Support faster and more cost-effective discovery and deployment of climate -adaptive alleles from the world’s germplasm collections
Test integrated approaches for five major crops (i.e., cassava, maize, sorghum, cowpea, and rice), providing a scalable model for the rapid and cost-effective discovery and deployment of climate-adaptive alleles.
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.
Denise E. Costich, the recently retired head of the Maize Collection at the Germplasm Bank of the International Maize and Wheat Improvement Center (CIMMYT), sometimes likes to include a Woody Allen quote in her presentations.
âI have no idea what Iâm doing,â declares the text over a photo of a befuddled-looking Allen. âBut incompetence never stopped me from plunging in with enthusiasm.â
This is perhaps Costichâs tongue-in-cheek way of acknowledging the unusual trajectory that led her to the Germplasm Bank and her zeal for new and interesting challenges. But it is in no way an accurate reflection of the skill, knowledge and humane managerial style she brought to the job.
âCIMMYT requires individuals with a broad set of experiences,â says Tom Payne, head of the Wheat Collection at CIMMYTâs Germplasm Bank. Though she was not trained as a crop scientist, and despite having never worked in a genebank before, Costichâs rich set of professional and life experiences made her an ideal person for the job.
From Ithaca and back again
Born and raised in Westbury, NY, Costich spent much of her childhood on a tree nursery. Her grandfather was the manager, her father became the sales director and eventually her sister also went into the horticulture business. While her experiences on the nursery contributed to an early interest in plants and ecology, the business aspect of the nursery eluded her. âI just canât sell things. Iâm terrible,â Costich says. âBut I really do like to study them.â
This studiousness took her to Cornell University in Ithaca, NY, where she initially declared as a wildlife biology major. Her notion of what it meant to âstudy thingsâ was influenced by her early heroes, primatologists and field biologists Dian Fossey and Jane Goodall. It involved travel. Fieldwork in faraway places. So, when the opportunity arose at the end of her sophomore year to travel to Kenya with Friends World College, Costich didnât hesitate.
Costich eventually spent four years in Kenya, studying baboons. When she finally returned to Ithaca, she knew two things. Fieldwork was absolutely her thing, and she wanted to pursue a doctorate.
A chance conversation with her housemates in her last semester led to a post-graduation fieldwork stint in the Brazilian Amazon under the supervision of the legendary tropical and conservation biologist, Thomas Lovejoy. But instead of a dissertation topic, she stumbled across a parasite, a case of leishmaniasis and the realization that the rainforest was not the work environment for her.
Unexpected influences and outcomes continued to mark Costichâs career throughout her graduate studies at the University of Iowa. She found her plant not in the field, but while reading a dusty review paper as an exchange student at the University of Wisconsin. Her study of Ecballium elaterium (a wild species in the Cucurbitaceae, or squash, family) did not take her back to the tropics â where most of her peers were working and where she expected to be headed as a grad student â but rather to Spain where, incidentally, she first learned Spanish.
Several years after defending, Costich landed a tenure-track position in the Biology Department at The College of New Jersey. She continued to publish on Ecballium elaterium. Her career appeared to be settling into a predictable, recognizable academic trajectory â one with no obvious intersection with CIMMYT.
Then Costich saw an ad in the Ecological Society of America bulletin for a managing editor position for all of the Societyâs journals. Her husband, a fellow biology Ph.D., had been working as an academic journal editor for several years. When Costich saw the ad she immediately drove over to her husbandâs office. âI slapped the thing on his desk and said, âHereâs your job!ââ she recalls.
Costich was right. Soon after, she was on her way back to Ithaca â where the Societyâs offices were located â with a family that now included three children. While it was the right move for her family, it came at the cost of her budding academic career. In Ithaca, she soon found herself stuck in the role of itinerant postdoc.
Denise Costich in Spain in 1986, doing fieldwork on Ecballium elaterium with her daughter Mara.
An amazing turn of events
Costich admits that, especially the beginning, the return to Ithaca was tough, even depressing. Her recollections of these years can sound a bit like a game of musical chairs played with research laboratories. As one post-doc or research project wound down, sheâd find herself scanning the campus for her next perch. She became very adept at it. âIn ten years, I never missed a paycheck,â Costich says.
The turn of the millennium found Costich scanning the horizon yet again. As the days wound down at her latest post, a maize geneticist moved into the lab next door. What started as hallway jokes about Costich jumping ship and joining the maize lab soon turned into an interview, then a job offer.
The job introduced her to nearly everyone at Cornell working in maize genetics. Costich soon found herself managing the Buckler Labâs work on maize population genetics. Meanwhile, she dabbled in side projects on Tripsacum, a perennial grass genus that is closely related to maize, and managed a major project on switchgrass. At the end of her postdoc, Buckler set to work trying to create a permanent position for her. Once again, Costichâs trajectory was beginning to take a stable, predictable form.
Then CIMMYT scientist Sarah Hearne showed up. âIâd heard through the grapevine â or maybe through the corn field â that the position of manager of the Maize Collection of CIMMYTâs Germplasm Bank was open… and that they were having a hard time trying to find a person for the position,â Costich recalls. She had met Hearne previously and personally knew and had worked with Suketoshi Taba, the pioneering longtime director of the germplasm bank. Naturally the topic emerged as she and Hearne caught up in Ithaca.
Hearne admitted that the search hadnât yet been successful. âBut I know the perfect person for the job,â she added.
âYeah, whoâs that?â Costich asked, not getting the setup.
Denise Costich, the maize collection manager at CIMMYTâs Maize and Wheat Germplasm Bank, shows one of the genebank’s more than 28,000 accessions of maize. (Photo: Luis Salazar/Crop Trust)
A stranger in a strangely familiar land
Costich was not a little surprised by the suggestion. She had never worked at a germplasm bank before. She was finally finding some stability at Cornell.
At the same time, her early dreams of exploring new places through her work, especially the tropics, beckoned. Her youngest son was nearly college-aged. Against the advice of some who had watched her work so hard to establish herself at Cornell, she took the plunge.
By the time she reached the CIMMYT campus in Texcoco, Costich had crisscrossed a good part of the globe, picking up Spanish here, management skills there, a deep knowledge of maize and its biological and cultural evolution yonder. During this life journey, she developed a deep humanism that is all her own.
It all seemed like happenstance, perhaps, until she reached Mexico and â suddenly, counterintuitively â found herself in the field she was perfectly adapted for. âIt turned out that being a germplasm bank manager was the perfect job for me, and I didnât even know it!â Costich says. âI ended up using everything I learned in my entire career.â
That isnât to say that it was easy, especially at first. Taba, her predecessor, had occupied the post for decades, was a trained crop scientist, and had grown the bank from a regionally-focused collection with 12,000 accessions to the preeminent maize germplasm bank globally with 28,000 accessions, a state-of-the-art storage facility, and a slew of pioneering practices.
Not only had Taba left enormous shoes to fill, during his tenure â as is common in the expansionary phase of many projects â it had been difficult for the bank to keep a full accounting and understanding of all the new material that had been added. According to germplasm bank coordinator Cristian Zavala, by the time Costich joined CIMMYT âwe knew very little about the material in our vaults.â
âTaba was primarily a breeder,â Costich says. âI actually think this oscillation between a focus on breeding and a focus on conservation and curation is good for the bank.â
Visiting a newly-built community seed reserve in Chanchimil, Todos Santos Cuchumatanes, Huehuetenango, Guatemala, in 2016. From left to right: Mario Fuentes (collaborator), a member of the community seed reserve staff, Denise Costich, Carolina Camacho (CIMMYT), Miriam Yaneth Ramos (Buena Milpa) and Esvin LĂłpez (local collaborator).
Costich with the winners of the Second Harvest Fair and Largest Mature Ear of Jala Maize Contest in Coapa, in Mexicoâs Nayarit state.
Costich (left) measures ears of corn for the Second Harvest Fair and Largest Mature Ear of Jala Maize Contest in Coapa, in Mexicoâs Nayarit state in 2019.
Costich (center) shares some comments from the stage at the Second Harvest Fair and Largest Mature Ear of Jala Maize Contest in Coapa, in Mexicoâs Nayarit state. To her left is Angel Perez, a participating farmer from La CofradĂa, and to her right, Rafael Mier, Director of the FundaciĂłn Tortillas de MaĂz Mexicana.
A bank for farmers
However, according to Zavala, because of the limited knowledge of much material they were working with, many in the bankâs rank-and-file didnât fully understand the importance of their work. Morale was mixed. Moreover, despite an assumption that her new job would see her working closely with local smallholders, Costich found that the institution was poorly known by everyday farmers in its host country. Where it was known, associate scientist on innovation and social inclusion, Carolina Camacho, notes, there was an assumption that CIMMYT only worked with hybrid varieties of maize and not the native landraces many smallholders in Mexico depend on.
These became the principal axes of Costichâs work at the bank: curation of backlogged material, staff development, and community outreach.
Thus, when Costich realized that records were being kept in a combination of paper and rudimentary digital formats, she sent Zavala, a promising young research assistant at the time, to an internship at the USDAâs Maize Germplasm Bank Collection in Ames, Iowa, to workshops at CGIAR germplasm banks in Colombia (CIAT) and Ethiopia (ILRI), and to meetings on specialized topics in Germany and Portugal.
Zavala had never left the country before, spoke little English, and remembers being ârebelliousâ at work. âI needed more responsibility,â he says. âDr. Denise saw that and helped me grow.â Upon returning from an early trip, Zavala helped implement up-to-date traceability and data management processes, including migrating the genebankâs data onto the USDAâs GRIN-Global platform.
But as Payne points out, Costichâs tenure was never about simple bean â or, in this case, grain â counting. âShe sees a more human aspect of the importance of the collections,â he says. The main tasks she set for the bank came to be subsumed into the overarching goal of a fuller understanding of the contents of the bankâs vaults, one that encompassed both their biological and sociocultural importance.
When Costich came across a collection of maize landraces from Morelos state assembled by Ăngel Kato in the mid 1960s that conserved the name of the farmer who had donated each sample, she worked with Camacho and graduate student Denisse McLean-Rodriguez to design a study involving the donor families and their communities. McLean-Rodriguez, Camacho and Costich set out to compare the effects of ex-situ versus in-situ landrace conservation in both genetic and socioeconomic terms.
Similarly, when a colleague at INIFAP invited Costich to be a judge at a yearly contest for largest ear of Jala landrace maize in Mexicoâs Nayarit state, they soon began discussing how they could contribute more than just their participation as judges to the community. Starting in 2016 Costich was a co-lead on a study of the landraceâs genetic diversity as well as an initiative to rematriate Jala seeds conserved at CIMMYT for over 60 years.
Costich and members of the Maize Collection team hosting Pedro Bello from UC Davis (center, glasses) at the CIMMYT Germplasm Bank in Texcoco, Mexico, for a workshop on seed longevity and conservation techniques.
A genebank is not an island
Genebanks are bulwarks against genetic erosion. But, as Camacho explains, this mission can be understood in both very narrow and very broad senses. The narrow sense focuses on genetic processes per se: the loss of alleles. The broad sense includes the loss of cultural practices and knowledge built and sustained around the cultivation of a given landrace. Through the initiatives the bank has undertaken during her tenure, Costich has tried to demonstrate, both scientifically and in practice, how germplasm collections such as CIMMYTâs can complement, reinforce, and be enriched by the work of smallholders â de facto germplasm conservators in their own right â while contributing to the difficult task of combating genetic erosion in the broad sense.
One gets the sense that in Costichâs view this isnât about a one-way process of big institutions âhelpingâ smallholders. Rather itâs about collaboration among all the participants in an interdependent web of conservation. As she argued at her recent exit seminar, Costich views germplasm banks as one link in a chain of food security backups that begins at the farm level.
Indeed, Costichâs most recent initiative demonstrated how innovations intended for one link in the chain can travel upwards and find applications at bigger institutions.
Costich recently led an initiative with community seed banks in the Cuchumatanes mountain range of Guatemala to study the use of DryChain technology in post-harvest storage of maize. This experiment showed the enormous benefits that incorporating such technologies could yield for energy-insecure or low-tech family and community seed reserves.
Ultimately, however, the study led to a second experiment at CIMMYTâs tropical-climate station at Agua FrĂa in Mexico. With advice from collaborators at UC Davis and an industry partner (Dry Chain America), the seed conditioning team retrofitted an old drying cabinet at the station to dry maize without using heat, but rather by forcing air to circulate through sacks of drying beads. Under the direction of Filippo Guzzon, a postdoc and seed biologist working with Costich, the long-term viability of seeds dried using the accelerated technique versus traditional, slower techniques was tested. The study showed no loss in long-term viability using the accelerated drying technique.
Denise Costich, CIMMYT director general Martin Kropff, and the Maize Collection team confer certificates of participation to two visiting interns, Jiang Li (to the left of Kropff), a doctoral student from CAAS, Beijing, China, and Afeez Saka Opeyemi (to the right of Costich), a staff member of the IITA Germplasm Bank in Nigeria.
Costich and the Maize Collection team at the 2018 CIMMYT Christmas party. Filippo Guzzon, seated to the right of Costich, had just been offered a postdoc with the team.
Costich and the Maize Collection team at the 2018 CIMMYT Christmas party.
A very busy retirement
At her exit seminar, Costich was presented a plaque in appreciation of her service at CIMMYT by Kevin Pixley, director of the genetic resources program. Terence Molnar, maize breeder with the Genetic Resources Team, has succeeded Costich as the Maize Germplasm Bank Head.
For some of her close colleagues, however, Costichâs departure is not the end of the road. âThis is not a forever goodbye,â Guzzon says. âI will continue to be in touch with my cuatita,â says Camacho, who has also left CIMMYT.
For her part, Costich echoes that this is not a forever goodbye at all. Not to her friends and colleagues, and certainly not to her work. At a socially-distanced, maize-based farewell lunch Costich held just days before her departure, she was still busy weaving social connections and furthering collaborations among maize fanatics of all stripes â from chefs and designers to scientists and policy advocates.
She is already considering taking a part time position at her old lab at Cornell and a return to Tripsacum research. At the same time, she will be a visiting scientist at Mexicoâs National Center for Genetic Resources (CNRG), where officially she will be heading up part of an international switchgrass study. Costich is hoping to leverage her tenure at CIMMYT by getting involved in a push to help improve the Mexican national system for plant genetic resources. Additionally, she has recently accepted an invitation from Seed Savers Exchange to join their board and she is looking forward to volunteering her time and expertise to various seed-saving initiatives within that organization and their many collaborators.
Asked what sheâs looking forward to tackling in her retirement that isnât work related, Costich betrays her deep allegiance to the plant world. âI donât know,â she says, âIâm thinking of starting a big vegetable garden.â
Disclaimer: The views and opinions expressed in this article are those of Philip Pardey and do not necessarily reflect the official views or position of the International Maize and Wheat Improvement Center (CIMMYT).
Working with national agricultural research centers (NARS), CGIAR centers, including the International Maize and Wheat Improvement Center (CIMMYT), have played a pivotal role in staving off the last global food crisis, mainly through enhancing the yields of staple food crops like cereals.
A new report, commissioned by the Supporters of Agricultural Research (SoAR) Foundation and authored by experts from the University of California, Davis, the University of Minnesota and North Dakota State University shows that over the past five decades, CGIAR investment has generated returns of 10 times the amount invested.
We caught up with co-author Philip Pardey, a professor at the University of Minnesota and Director of the universityâs GEMS Informatics Center, to discuss the report’s implications, the importance of collaboration between NARS and CGIAR, and why investment in agricultural research and development (R&D) is needed now more than ever.
According to the report, CGIAR investment has returned a benefit-cost ratio of 10:1. How does this compare to other government investments?
A benefit-cost ratio of 10:1 means that on average, a dollar invested today brings a future return equivalent to $10 in present-day value. This is high: any ratio over the threshold of 1:1 justifies investment.
This indicates that governments â and others who invest in CGIAR and related public food and agricultural R&D â would have profited society by doing more agricultural R&D compared with the investment opportunities normally available to them. Opportunities for investment in other national and global public goods, like education and infrastructure, might also have yielded very high returns, but there is no comparable evidence that those other opportunities yielded similar return on investments.
Drawing on the findings of this report, and other related work, we conclude that the economic evidence justifies at least a doubling of overall investments in public food and agricultural R&D.
The report shows evidence of massive underinvestment in agricultural research and development (R&D) in past years. Why is that?
As we show in the report, inflation adjusted CGIAR funding has declined sharply by around 25% in the past few years. There is nothing in the economic evidence that justifies this scaling back.
Some commentators have suggested that the easy gains from agricultural R&D have already been made and that the historical returns-to-research evidence is no longer representative of the returns to more recent R&D. However, the empirical evidence refutes that notion. For example, a 2019 study from Rao et al. showed that the contemporary returns of agricultural R&D are as high as ever.
What are the risks of continuing on this path of underinvestment in agricultural R&D?
In the second half of the 20th century, global food supply grew faster than demand and real food prices fell significantly, alleviating hunger and poverty for hundreds of millions around the world. Whether or not that pattern can be repeated in the first half of the 21st century will depend crucially on investments in agricultural R&D, including investments made through CGIAR.
Global demand for food is projected to grow by 70% from 2010 to 2050. Simply meeting that increased demand will call for transformative innovations in agriculture to adapt to a changing climate, combat co-evolving pests and diseases, and increase productivity of a fairly fixed land base and a shrinking supply of agricultural water. To make food abundant and affordable for the increasingly urban, poorest of the poor demands doing much more â and much better â than simply keeping up. If adequate investments in agricultural R&D are absent, even the odds of keeping up look increasingly questionable.
Your report shows that returns are a joint effort between NARS and CGIAR. Can you elaborate on that?
The impact evidence we reviewed for our study made clear that the success of CGIAR research is inextricably intertwined with research undertaken by national programs. In fact, this national-international R&D connectedness makes it difficult to figure out what share of the overall benefits from research are attributable to CGIAR or national innovation systems.
CGIAR has appropriately shifted its attention to low-income countries that are still heavily dependent on agriculture for livelihoods and food security. These also tend to have lower national R&D capacities and more fragile innovation systems, as well as limited, albeit emerging, private sector capabilities to support their food and agricultural sectors.
Supporting the evolution of agricultural innovation systems within CGIARâs target economies requires doubling down on technology discovery, adaptation and delivery activities.
Philip Pardey at the University of Minnesota, USA. (Photo: InSTePP/University of Minnesota)
How can CGIAR better meet current global food challenges?
CGIAR has been demonstrably successful as an international instrument of technology discovery and in enhancing the international transfer, or spillover, of these new technologies. Tackling longer term agricultural technology challenges has been a key part of past successes.
However, a significant share of the funding for the CGIAR appears to have shifted away from the more strategic development of international public innovation goods to more localized economic development activities with a technology component. For example, the share of unencumbered CGIAR funding shrank from around 80% in 1971 to 50% in 2000, and since 2010 has plummeted to very low levels. The impact evidence provides little support for the notion that this shift in funding, which often implies a greater emphasis on more localized and shorter-term activities, is a high payoff strategy that best leverages CGIARâs comparative advantages.
As it continually repositions its role as a source of international public innovation goods targeted to agriculturally dependent low-income countries, CGIAR will need to rethink how it partners with the public agencies, universities and private research entities that are the major source of innovations in food and agriculture.
When CGIAR was founded, a large share of the worldâs agricultural R&D was done by public agencies in rich countries. Now the agriculturally large, middle-income countries spend on par with the rich countries, and the innovation landscape in rich and many middle-income countries is increasingly dominated by private firms. This comes with new partnership opportunities for CGIAR, but also new challenges, not least given the increasingly proprietary nature of the innovations and data that are driving developments in the food and agricultural sectors.
In your report you have documented clear evidence to support investment in agricultural R&D. What are the next steps in engaging national governments and decision makers to get agricultural R&D back on their agendas?
Today, as in the past, funding streams for CGIAR research are in decline and under threat. This mirrors a pattern of declining public support over recent decades for agricultural R&D conducted by national programs in many of the worldâs richer countries.
However, public expectations about the roles of government to address glaring market failures may be realigning. For instance, the COVID-19 crisis exposed weakness in many public health systems, with calls for renewed and hopefully sustained, long-term investments in these public programs. COVID has also revealed the fragility of food supply systems, even in rich countries. The tide of public opinion also seems to be turning regarding the growing risks associated with climate change.
Evidence-based efforts to communicate the inter-relatedness between climate, public health and agriculture risks, and the role of innovation in reducing these growing risks over the decades ahead is critical to right-sizing and realigning the public roles in agricultural R&D.
Just as strong public investments play a crucial and complimentary role regarding significant private investments in health research, so too does the basic and pre-competitive research, undertaken with public funding, prime the pump for the growing private roles in agricultural innovation.
And even as the worldwide demand for more diversified diets continues to increase, demand for staple crops such as wheat and maize will also continue to grow and will remain crucial to securing favourable nutrition and food security outcomes in the decades ahead. Innovations in agriculture are hard won, and there are long lags (often a decade or more) between spending on agricultural R&D and getting new crop technologies in the hands of farmers. Thus there is a real sense of urgency to revitalize the investments in agricultural R&D required to produce the innovations that are needed now more than ever to sustainably feed the world.
Philip Pardey is a Professor of Applied Economics and Director of the GEMS Informatics Center, a joint venture of the College of Food, Agricultural and Natural Resource Sciences (CFANS) and the Minnesota Supercomputing Institute (MSI), both at the University of Minnesota.
A new fact sheet captures the impact of CIMMYT after six decades of maize and wheat research in Pakistan.
Dating back to the 1960s, the research partnership between Pakistan and CIMMYT has played a vital role in improving food security for Pakistanis and for the global spread of improved crop varieties and farming practices.
Norman Borlaug, Nobel Peace Prize laureate and first director of CIMMYT wheat research, kept a close relationship with the nationâs researchers and policymakers. CIMMYTâs first training course participant from Pakistan, Manzoor A. Bajwa, introduced the high-yielding wheat variety âMexi-Pakâ from CIMMYT to help address the national food security crisis. Pakistan imported 50 tons of Mexi-Pak seed in 1966, the largest seed purchase of its time, and two years later became the first Asian country to achieve self-sufficiency in wheat, with a national production of 6.7 million tons.
CIMMYT researchers in Pakistan examine maize cobs. (Photo: CIMMYT)
In 2019 Pakistan harvested 26 million tons of wheat, which roughly matches its annual consumption of the crop.
In line with Pakistanâs National Food Security Policy and with national partners, CIMMYT contributes to Pakistanâs efforts to intensify maize- and wheat-based cropping in ways that improve food security, raise farmersâ income, and reduce environmental impacts. This has helped Pakistani farmers to figure among South Asiaâs leaders in adopting improved maize and wheat varieties, zero tillage for sowing wheat, precision land leveling, and other innovations.
With funding from USAID, since 2013 CIMMYT has coordinated the work of a broad network of partners, both public and private, to boost the productivity and climate resilience of agri-food systems for wheat, maize, and rice, as well as livestock, vegetable, and fruit production.
Resorting to conservation agriculture would not only increase crop yield, income and reduce the use of natural resources, but would also confer climate change benefits, according to a study by Indian agricultural scientists and others published in an international journal on Thursday.
The study, published in the journal Nature Sustainability, also showed that conservation agriculture was key to meeting many of the UNâs Sustainable Development Goals (SDGs) such as no poverty, zero hunger, good health and well-being, climate action and clean water. Conservation agriculture can offer positive contributions to several SDGs, said M. L. Jat, a Principal Scientist at the International Maize and Wheat Improvement Center (CIMMYT) and first author of the study.
During a conservation agriculture course, a young trainee operates a Happy Seeder mounted on a two-wheel tractor, for direct seeding of wheat in smallholder systems. (Photo: CIMMYT)
An international team of scientists has provided a sweeping new analysis of the benefits of conservation agriculture for crop performance, water use efficiency, farmersâ incomes and climate action across a variety of cropping systems and environments in South Asia.
The analysis, published today in Nature Sustainability, is the first of its kind to synthesize existing studies on conservation agriculture in South Asia and allows policy makers to prioritize where and which cropping systems to deploy conservation agriculture techniques. The study uses data from over 9,500 site-year comparisons across South Asia.
According to M.L. Jat, a principal scientist at the International Maize and Wheat Improvement Center (CIMMYT) and first author of the study, conservation agriculture also offers positive contributions to the Sustainable Development Goals of no poverty, zero hunger, good health and wellbeing, climate action and clean water.
âConservation agriculture is going to be key to meet the United Nations Sustainable Development Goals,â echoed JK Ladha, adjunct professor at the University of California, Davis, and co-author of the study.
Scientists from CIMMYT, the Indian Council of Agricultural Research (ICAR), the University of California, Davis, the International Rice Research Institute (IRRI) and Cornell University looked at a variety of agricultural, economic and environmental performance indicators â including crop yields, water use efficiency, economic return, greenhouse gas emissions and global warming potential â and compared how they correlated with conservation agriculture conditions in smallholder farms and field stations across South Asia.
A combine harvester equipped with the Super SMS (left) harvests rice while a tractor equipped with the Happy Seeder is used for direct seeding of wheat. (Photo: Sonalika Tractors)
Results and impact on policy
Researchers found that many conservation agriculture practices had significant benefits for agricultural, economic and environmental performance indicators, whether implemented separately or together. Zero tillage with residue retention, for example, had a mean yield advantage of around 6%, provided farmers almost 25% more income, and increased water use efficiency by about 13% compared to conventional agricultural practices. This combination of practices also was shown to cut global warming potential by up to 33%.
This comes as good news for national governments in South Asia, which have been actively promoting conservation agriculture to increase crop productivity while conserving natural resources. South Asian agriculture is known as a global âhotspotâ for climate vulnerability.
âSmallholder farmers in South Asia will be impacted most by climate change and natural resource degradation,â said Trilochan Mohapatra, Director General of ICAR and Secretary of India’s Department of Agricultural Research and Education (DARE). âProtecting our natural resources for future generations while producing enough quality food to feed everyone is our top priority.â
âICAR, in collaboration with CIMMYT and other stakeholders, has been working intensively over the past decades to develop and deploy conservation agriculture in India. The country has been very successful in addressing residue burning and air pollution issues using conservation agriculture principles,â he added.
With the regionâs population expected to rise to 2.4 billion, demand for cereals is expected to grow by about 43% between 2010 and 2050. This presents a major challenge for food producers who need to produce more while minimizing greenhouse gas emissions and damage to the environment and other natural resources.
“The collaborative effort behind this study epitomizes how researchers, policy-makers, and development practitioners can and should work together to find solutions to the many challenges facing agricultural development, not only in South Asia but worldwide,” said Jon Hellin, leader of the Sustainable Impact Platform at IRRI.
Funders of this work include the Indian Council of Agricultural Research (ICAR), the Government of India and the CGIAR Research Programs on Wheat Agri-Food Systems (CRP WHEAT) and Climate Change, Agriculture and Food Security (CCAFS).
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.
A farm worker applies fertilizer in a field of Staha maize for seed production at Suba Agro’s Mbezi farm in Tanzania. (Photo: Peter Lowe/CIMMYT)
Crop yields in sub-Saharan Africa are generally low. This is in large part because of low fertilizer use. A recent study of six countries in sub-Saharan Africa showed that just 35% of farmers applied fertilizer. Some possible reasons for this could be that farmers may be unaware of the efficacy of fertilizer use; or have degraded soils that do not respond to fertilizer; they may not have the cash to purchase it; or because unpredictable rainfall makes such investments risky. It may also be because local fertilizer prices make their use insufficiently profitable for many farmers.
To better understand the potential fertilizer demand in a particular location, it is important to know how crops respond to fertilizer under local conditions, but it is critical to understand crop responses in terms of economic returns. This requires information about local market prices of fertilizers and other inputs, as well as the prices that a farmer could receive from selling the crop.
While national-level fertilizer prices may be available, it is necessary to consider the extent to which prices vary within countries, reflecting transportation costs and other factors. In the absence of such data, analysis of household-level behaviors requires assumptions about the prices smallholder farmers face â assumptions which may not be valid. For example, evaluations of the returns to production technologies settings have often assumed spatially invariant input and output prices or, in other words, that all farmers in a country face the same set of prices. This is at odds with what we know about economic remoteness and the highly variable market access conditions under which African smallholders operate.
An obstacle to using empirical data on sub-national disparities in fertilizer prices is the scarcity of such data. A new study focused on the spatial discrepancies in fertilizer prices. The study compiled local market urea price in eighteen countries in sub-Saharan Africa for the period between 2010-2018 and used spatial interpolation models â using points with known values to approximate values at other unknown points â to predict local prices at locations for which no empirical data was available. It was conducted by scientists at University of California, Davis, the International Maize and Wheat Improvement Center (CIMMYT) and the International Food Policy Research Institute (IFPRI). The authors note that this is the first major attempt to systematically describe the spatial variability of fertilizer prices within the target countries and test the ability to estimate the price at unsampled locations.
Predicted relative urea price (local price divided by the observed median national price) for areas with crop land in eight East African countries.
âOur study uncovers considerable spatial variation in fertilizer prices within African countries and gives a much more accurate representation of the economic realities faced by African smallholders than the picture suggested by using national average prices,â said Camila Bonilla Cedrez, PhD Candidate at University of California, Davis. âWe show that in many countries, this variation can be predicted for unsampled locations by fitting models of prices as a function of longitude, latitude, and additional predictor variables that capture aspects of market access, demand, and environmental conditions.â
Urea prices were generally found to be more expensive in remote areas or away from large urban centers, ports of entry or blending facilities. There were some exceptions, though. In Benin, Ghana and Nigeria, prices went down when moving away from the coast, with the possible explanation being market prices in areas with higher demand are lower. In other locations, imports of fertilizer from neighboring countries with lower prices may be affecting prices in another country or region, much like political influence. Politically, well-connected villages can receive more input subsidies compared to the less connected ones.
âThe performance of our price estimation methods and the simplicity of our approach suggest that large scale price mapping for rural areas is a cost-effective way to provide more useful price information for guiding policy, targeting interventions, and for enabling more realistic applied microeconomic research. For example, local price estimates could be incorporated into household-survey-based analysis of fertilizer adoption,â explained Jordan Chamberlin, CIMMYT spatial economist. âIn addition, such predictive âprice mapsâ can be incorporated into targeting and planning frameworks for agricultural investments. For example, to target technology promotion efforts to the areas where those technologies are most likely to be profitable.â
Predicted relative urea price (local price divided by the observed median national price) for areas with crop land in nine West African countries.
âThe evidence we have compiled in this paper suggests that, while investments in more comprehensive and spatially representative price data collection would be very useful, we may utilize spatial price prediction models to extend the value of existing data to better reflect local price variation through interpolation,â explained Robert J. Hijmans, professor at University of California, Davis. âEven if imperfect, such estimates almost certainly better reflect farmersâ economic realities than assumptions of spatially constant prices within a given country. We propose that spatial price estimation methods such as the ones we employ here serve for better approximating heterogeneous economic market landscapes.â
This study has illustrated new ways for incorporating spatial variation in prices into efforts to understand the profitability of agricultural technologies across rural areas in sub-Saharan Africa. Â The authors suggest that an important avenue for future empirical work would be to evaluate the extent to which the subnational price variation documented is a useful explanatory factor for observed variation in smallholder fertilizer use in sub-Saharan Africa, after controlling for local agronomic responses and output prices. One way to do that may be to integrate input and output price predictions into spatial crop models, and then evaluate the degree to which modeled fertilizer use profitability predicts observed fertilizer use rates across different locations.
