funder_partner: Rothamsted Research

Ecological farming a boon for staple crop farmers in Africa, new study finds

Written by Mike Listman on July 20, 2022. Posted in Press releases.

Elufe Chipande (left), a farmer at Songani in Zomba District, Malawi, is rotating maize (background) and pigeonpea (foreground) under conservation agriculture practices to improve soil fertility and capture and retain more water. Christian Thierfelder (center), a cropping systems agronomist working out of the Zimbabwe office of CIMMYT, advises and supports southern African farmers and researchers to refine and spread diverse yield-enhancing, resource-conserving crop management practices. Photo: Mphatso Gama/CIMMYTSRUC

An international team of scientists has found that eco-friendly practices such as growing a range of crops, including legumes such as beans or pigeonpea, and adding plant residues or manure to soils can raise food crop yields in places such as rural Africa, where small-scale farmers cannot apply much nitrogen fertilizer.

Published in the science journal Nature Sustainability and examining data from 30 long-running field experiments involving staple crops (wheat, maize, oats, barley, sugar beet, or potato) in Europe and Africa, this major study is the first to compare farm practices that work with nature to increase yields and explore how they interact with fertilizer use and tillage.

“Agriculture is a leading cause of global environmental change but is also very vulnerable to that change,” said Chloe MacLaren, a plant ecologist at Rothamsted Research, UK, and lead author of the paper. “Using cutting-edge statistical methods to distill robust conclusions from divergent field experiment data, we found combinations of farming methods that boost harvests while reducing synthetic fertilizer overuse and other environmentally damaging practices.”

Recognizing that humanity must intensify production on current arable land to feed its rising numbers, the paper advances the concept of “ecological intensification,” meaning farming methods that enhance ecosystem services and complement or substitute for human-made inputs, like chemical fertilizer, to maintain or increase yields.

Boosting crop yields and food security for far-flung smallholders

The dataset included results from six long-term field experiments in southern Africa led by the International Maize and Wheat Improvement Center (CIMMYT). Africa’s farming systems receive on average only 17 kilograms of fertilizer per hectare, compared to more than 180 kilograms per hectare in Europe or close to 600 in China, according to Christian Thierfelder, a CIMMYT cropping systems agronomist and study co-author.

“In places where farmers’ access to fertilizer is limited, such as sub-Saharan Africa or the Central American Highlands, ecological intensification can complement scarce fertilizer resources to increase crop yields, boosting households’ incomes and food security,” Thierfelder explained. “We believe these practices act to increase the supply of nitrogen to crops, which explains their value in low-input agriculture.”

The CIMMYT long-term experiments were carried out under “climate-smart” conservation agriculture practices, which include reduced or no tillage, keeping some crop residues on the soil, and (again) growing a range of crops.

“These maize-based cropping systems showed considerable resilience against climate effects that increasingly threaten smallholders in the Global South,” Thierfelder added.

Benefits beyond yield

Besides boosting crop yields, ecological intensification can cut the environmental and economic costs of productive farming, according to MacLaren.

“Diversifying cropping with legumes can increase profits and decrease nitrogen pollution by reducing the fertilizer requirements of an entire crop rotation, while providing additional high-value food, such as beans,” MacLaren explained. “Crop diversity can also confer resilience to weather variability, increase biodiversity, and suppress weeds, crop pests and pathogens; it’s essential, if farmers are to improve maize production in places like Africa.”

Thierfelder cautioned that widespread adoption of ecological intensification will require strong support from policymakers and society, including establishing functional markets for legume seed and for marketing farmers’ produce, among other policy improvements.

“Dire and worsening global challenges — climate change, soil degradation and fertility declines, and scarcening fresh water — threaten the very survival of humanity,” said Thierfelder. “It is of utmost importance to renovate farming systems and bring us back into a safe operating space.”

Click here to read the paper, Long-term evidence for ecological intensification as a pathway to sustainable agriculture.

For more information or interviews:

Rodrigo Ordoñez, Communications Manager

Email: r.ordonez@cgiar.org

Tel: +52 55 5804 2004, ext. 1167

Double Burden of Malnutrition in Zimbabwe

Written by Rodrigo Ordóñez on November 11, 2020. Posted in Uncategorized.

The “double burden of malnutrition” refers to the seemingly paradoxical coexistence of obesity and undernutrition. It affects people whose diet consists primarily of “empty” calories: high-energy foods lacking in essential vitamins and minerals.

This project takes aim at both issues by combining improved agronomic practices with the use of biofortified maize varieties, to increase the nutritional value of maize, Zimbabwe’s most important, high-calorie staple food crop.

This project, whose full title is “Addressing malnutrition with biofortified maize in Zimbabwe: From crop management to policy and consumers”, will carry out on-station trials at Harare Research Station and Domboshava Training Centre, and conduct on-farm trials with 60 farmers in two wards in Murehwa district. These trials will help researchers predict the effect of bio + agro fortification at the national level. Project findings will be broadly disseminated through a well-defined stakeholder engagement strategy.

Objectives:

Evaluate new Provitamin A maize varieties and the next generation of multiple-biofortified lines under different agronomic practices to gain knowledge on the combination of bio + agronomic fortification.
Determine the actual nutrient content of the new Provitamin A lines in farmers’ fields with a range of different soil fertility levels and under farmers crop management.
Evaluate the possible impact of the combined bio + agro fortification approach on micronutrient uptake and human health by integrating the new grain composition with food supply data from household/individual dietary surveys at country level in Zimbabwe.
To move knowledge into practice, the information developed throughout the project will be distributed to stakeholders working in nutrition in Zimbabwe. This will ensure that the knowledge generated in the project helps farmers and consumers to maximize the benefits from biofortified crops.

Agricultural researchers forge new ties to develop nutritious crops and environmental farming

Written by Mike Listman on January 25, 2017. Posted in News.

EL BATAN, Mexico (CIMMYT)—Scientists from two of the world’s leading agricultural research institutes will embark on joint research to boost global food security, mitigate environmental damage from farming, and help to reduce food grain imports by developing countries.

At a recent meeting, 30 scientists from the International Maize and Wheat Improvement Center (CIMMYT) and Rothamsted Research, a UK-based independent science institute, agreed to pool expertise in research to develop higher-yielding, more disease resistant and nutritious wheat varieties for use in more productive, climate-resilient farming systems.

“There is no doubt that our partnership can help make agriculture in the UK greener and more competitive, while improving food security and reducing import dependency for basic grains in emerging and developing nations,” said Achim Dobermann, director of Rothamsted Research, which was founded in 1843 and is the world’s longest running agricultural research station.

Individual Rothamsted and CIMMYT scientists have often worked together over the years, but are now forging a stronger, broader collaboration, according to Martin Kropff, CIMMYT director general. “We’ll combine the expertise of Rothamsted in such areas as advanced genetics and complex cropping systems with the applied reach of CIMMYT and its partners in developing countries,” said Kropff.

Nearly half of the world’s wheat lands are sown to varieties that carry contributions from CIMMYT’s breeding research and yearly economic benefits from the additional grain produced are as high as $3.1 billion.

Experts predict that by 2050 staple grain farmers will need to grow at least 60 percent more than they do now, to feed a world population exceeding 9 billion while addressing environmental degradation and climate shocks.

Rothamsted and CIMMYT will now develop focused proposals for work that can be funded by the UK and other donors, according to Hans Braun, director of CIMMYT’s global wheat program. “We’ll seek large initiatives that bring significant impact,” said Braun.

Global wheat community discusses research, partnerships at Obregon pilgrimage

Written by on April 14, 2016. Posted in News.

Scientist Sukhwinder Singh (L) hosts a discussion in the wheat fields at the CIMMYT research station in Obregon, Mexico. CIMMYT/Julie Mollins

OBREGON, Mexico (CIMMYT) — For hundreds of international agricultural development experts, an annual gathering in northern Mexico provides a vital platform for sharing and debating the latest wheat breeding news and research.

This year, more than 200 members of the wheat community from more than 30 countries met in the legendary wheat fields of Ciudad Obregon in Mexico’s state of Sonora to participate in Visitors’ Week, hosted by the Global Wheat Program (GWP) of the International Maize and Wheat Improvement Center (CIMMYT).

The event coincides with the birthday of Norman Borlaug, the late CIMMYT wheat breeder and Nobel Peace Prize laureate, known as the father of the Green Revolution for his contributions to global food security, many of which were undertaken in Obregon. This year, Visitors’ Week delegates toasted his 102^nd birthday at the Norman E. Borlaug Experimental Field research station.

The month of March also marks the peak wheat-growing season in Obregon, and participants attended a field day tour to see old and new wheat varieties, learn about CIMMYT programs and the latest research findings. Additionally, meetings and discussions were held with the goal of contributing to the improvement of wheat research across the globe by identifying key priorities.

INTERNATIONAL DIALOGUES

A brainstorming session between representatives from the British government and CIMMYT included discussions on collaborating on breeding for tolerance to high ambient temperatures, durable disease resistance, nitrogen use efficiency, and quality and nutrition.

Future collaborations between CIMMYT and Australia were explored with the Grains Research and Development Corporation and the CIMMYT-Australia-ICARDA Germplasm Exchange (CAIGE) group. 2Blades, a U.S.-based organization supporting the development of durable disease resistance in crop plants, joined the discussion and expressed the need to use safe, sustainable crop production strategies.

As part of discussions regarding international collaboration, the second meeting of the Expert Working Group on Nutrient Use Efficiency in wheat aimed to improve international coordination on NUE (nitrogen and other nutrients) research among Australia, Britain, France, Mexico, Italy, Spain and Germany.

During the NUE meeting, an executive committee was appointed, with Malcolm Hawksford, head of Plant Biology and Crop Science at Rothamsted Research as chair and Jacques Le Gouis, of the French National Institute for Agricultural Research, as vice chair.

As well, the International Wheat Yield Partnership (IWYP) held its first official conference during which IWYP director Jeff Gwyn discussed outcomes and objectives for the next 20 years.

Due to the large audience of global wheat researchers, the Borlaug Global Rust Initiative took the opportunity to launch its new project, Delivering Genetic Gain in Wheat (DGGW), supported by a $24 million grant from the Bill & Melinda Gates Foundation. Under the DGGW, CIMMYT scientists aim to mitigate serious threats to wheat brought about by climate change by developing and deploying new heat-tolerant, disease-resistant wheat varieties.

ENCOURAGING ENGAGEMENT

With the hope of increasing data and information sharing, the International Wheat Improvement Network (IWIN) awarded Mehmet Nazım Dincer of Turkey the IWIN Cooperator Award for contributing data on international nurseries. Through a lottery, Dincer was selected from among researchers who provided data on international seed nurseries to IWIN in 2015. Dincer was awarded a one-week paid visit to Obregón during GWP Visitors’ Week, and was also congratulated for his collaborative efforts during the festivities.

Another lottery will be held in November to select the next winner from among cooperators who return 2016 international nursery data. GWP director Hans Braun joked that he is not aware of other lotteries with so few participants in which the jackpot is a trip to Obregon, encouraging IWIN cooperators to return their data and win.

Visitors’ Week is not only an important time for international collaborations and brainstorming, but also for capacity development and training early career scientists. Coinciding with this year’s Visitors’ Week was the GWP Basic Wheat Improvement Course (BWIC), a three-month training course for young and mid-career scientists focusing on applied breeding techniques in the field. In addition to attending Visitors’ Week events, trainees were offered special courses with guest lecturers.

Joining the BWIC at this time were winners of the 2016 Women in Triticum Award who alongside women trainees attended a “Women in Agriculture” discussion led by Jeannie Borlaug, daughter of Norman Borlaug, to discuss difficulties and successes women face in achieving equality in the science and agriculture sectors.