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Tag: Green Revolution

Sowing seeds of change: CIMMYT leads crop diversification efforts in South Asia

Written by Julian Bañuelos-Uribe on . Posted in Blogs.

Farmers participate in a training on improved seeds and technologies. (Photo: S. Mojumder Drik/CIMMYT)

Rapid urbanization, globalization, economic development, technological advancement, and changing agriculture production systems in South Asia are transforming food systems and the food environment.

India and Bangladesh, particularly, have seen a significant transformation since the advent of the Green Revolution as each became able to feed their population without having to import major crops.

However, that policy focus on food self-sufficiency and yield intensification has incurred significant health, environmental and fiscal costs, including a precipitous drop in crop diversification*.

This loss of crop diversification threatens economic and social development and environmental stability while weakening the crucial link between agriculture and community health, particularly in undernourished rural areas. To ensure sustainable food production and nutritional security, it is imperative to manage and conserve crop diversification.

To address these issues and ensure sustainable food production, there is an urgent need to transition from intensive to sustainable farming practices.

CIMMYT exploring crop diversification pathways

CIMMYT’s ongoing projects in South Asia, including the Transforming Agrifood Systems in South Asia (TAFSSA) and Transforming Smallholder Food Systems in the Eastern Gangetic Plains (RUPANTAR) are conducting extensive on-site and on-farm trials, including socioeconomic dimensions of farmers to promote crop diversification.

“To effectively address the challenges of crop diversification, it is essential to integrate on-farm trials and participatory action research, involving farmers in the experimentation and adaptation process tailored to their unique regional needs,” said Ravi Nandi, innovation systems scientist at CIMMYT in Bangladesh. “This hands-on involvement provides valuable data to guide policymaking, ensuring relevance and applicability.”

In addition, TAFSSA and RUPANTAR are engaging in participatory action research to uncover the most viable options for crop and livelihood diversification, understand the socioeconomic factors impacting farmers, and identify the potential opportunities and challenges associated with the crop and livelihood diversification efforts among the farmers.

Researchers completed two comprehensive surveys, engaging with 2,500 farmers across the Eastern Gangetic Plains (EGP) of India, Nepal and Bangladesh, yielding valuable data that will inform future strategies for crop diversification in the region.

Ongoing investigations into the political economy of policies for crop diversification in Bangladesh generate novel insights, further contributing to the development of efficient crop diversification projects and sustainable agricultural policies.

The rise of crop diversification in practices and policy

In recent years, crop diversification has gained traction as a promising strategy to boost agricultural productivity, reduce risks (production, market, climate, and environmental), enhance nutritional outcomes, and promote sustainable agriculture.

Following the inaugural National Conference of Chief Secretaries in Dharamshala, India, led by the Prime Minister of India, state governments introduced numerous policies and schemes to support crop diversification. Some of these initiatives, highlighted in Figure 1, were backed by substantial budget allocations aimed at motivating farmers to diversify their crop production from the current intensive production system.

Figure 1: Author’s compilation from various public sources.

Similar initiatives have been started in Bangladesh, Nepal and other South Asian countries to promote crop diversification. These policies and schemes are important steps towards addressing inadequacies that intensive farming has created in agriculture and food systems.

While policies promoting crop diversification in South Asia are a positive step, their effectiveness is contingent on evidence-based decision-making. The complexities of implementing diversification strategies vary significantly depending on local contexts, particularly in countries like India, Nepal and Bangladesh, where most farmers operate on less than one hectare of land and face diverse weather conditions.

Smallholder farmers, at risk of losing economic stability from abandoning profitable monocrops, face additional challenges because of limited access to advanced technologies and fragmented markets, making the transition to diversified farming a precarious endeavor.

A shift towards comprehensive multi-criteria assessments, including qualitative methods and stakeholder interactions, is necessary for creating practical and locally relevant indicators. Supporting infrastructure, accessible extension services and market development, along with empowering farmers through education on agronomic practices and crop management, will play a crucial role in successfully implementing and reaping the benefits of crop diversification.

*Crop diversification is a process that makes a simplified cropping systems more diverse in time and space by adding additional crops. 

Farewell to the “Father of the Green Revolution in India”, M.S. Swaminathan

Written by Julian Bañuelos-Uribe on . Posted in News.

CIMMYT joins with members of the international development community to mourn the passing of renowned wheat geneticist and “Father of the Green Revolution in India,” Monkombu Sambasivan Swaminathan who died on September 27 at the age of 98.

Swaminathan devoted his life to sustainably feeding the world. His vision reshaped India almost overnight to a breadbasket for South Asia, through adoption of innovative high-yield wheat varieties and efficient farming techniques for Indian farmers. TIME magazine acclaimed him as one of the twenty most influential Asians of the 20th Century, making him one of three from India to be named alongside Mahatma Gandhi and Rabindranath Tagore.

M.S. Swaminathan. (Photo: MSSRF)

Swaminathan began his career in the world of academia. After earning his Ph.D. in plant genetics from Cambridge University in 1952, he moved to the United States to continue his research as a professor; however, his home country India eventually called him back home. With the crisis of a rapidly increasing population and low food production, Swaminathan returned to become a scientist at the Indian Agricultural Research Institute (IARI), where he later served as Director from 1961 to 1972.

It was during this time that he began his collaboration scientist Norman Borlaug, future Nobel Prize laureate and soon to be leader of CIMMYT wheat research. Swaminathan saw the value of the Mexican semi-dwarf wheat varieties, which were developed by Borlaug, for wheat production in India and requested that Borlaug send him a range of breeding materials containing the Norin dwarfing genes. The seeds arrived in 1963 along with Borlaug and the pair travelled the wheat-belt of India. Swaminathan arranged multi-location trials for the varieties and established an inter-disciplinary team to adapt the new varieties for Indian conditions.

Norman Borlaug with Swaminathan and Kohli, key promoters of modern varieties, in a seed production plot, India, 1964. (Photo: CIMMYT)

The next step was convincing local farmers to grow the varieties. By 1966, Swaminathan had established 2,000 model farms where farmers could see for themselves the benefits of the new wheats. Swaminathan’s final act in kickstarting the Green Revolution in India was to successfully lobby the Indian government to import 18,000 tons of the Mexican seed.

Just 4 years later India’s wheat harvest had doubled to 20 million tons, ending the nation’s dependence on wheat imports and saving millions from starvation. Swaminathan continued to work with the Indian government to maintain food security and long-term self-sufficiency across the country and the impact of his work earned him the first World Food Prize in 1987.

Swaminathan held a number of leadership roles in world agricultural and conservation organizations over his lifetime, including the FAO council, the International Union for the Conservation of Nature and Natural Resources, the World Wide Fund for Nature (India), and the National Academy of Agricultural Sciences. He also served as Director General of the Indian Council of Agricultural Research (ICAR), and Secretary to the Government of India at the Department of Agricultural Research and Education from 1972-79, as well as Director General of the International Rice Research Institute in the Philippines from 1982-88.

A humanitarian at heart

Not just a scientist, Swaminathan was an advocate and humanitarian. Shortly after winning the World Food Prize, he used the award funds to establish a research center, the M.S. Swaminathan Research Foundation (MSSRF), in Chennai, India. The MSSRF allowed him to work on his other passion, sustainable development, where he coordinated research and action on conservation of endangered species, protection of coastal ecosystems, precision farming, ecotechnology, community education and technical training, and programs for rural internet access.

M.S. Swaminathan won the World Food Prize in 1987. (Photo: World Food Prize)

He has received 84 honorary doctorate degrees from universities around the world and multiple awards including the Padma Shri (1967), Padma Bhushan (1972) and Padma Vibushan (1989) – the fourth, third and second highest civilian awards in India. He has also won numerous international awards including the 1994 UNEP Sasakawa Environment Prize, the UNESCO Gandhi Gold Medal in 1999 and the Franklin D. Roosevelt Four Freedoms Award in 2000.

“He was a real gentleman with a sharp memory,” recalls CIMMYT distinguished scientist Ravi Singh. “I always admired his capacity and his ability to link complicated topics into a nice synthesis.”

He was an inspiration to thousands and will be greatly missed for his scientific brilliance, his pioneering advocacy and humanitarianism, and his life mission to reduce world hunger through improved technology for citizens from all levels of society.

The CIMMYT family extends its deepest condolences to the Swaminathan family.

Children eat lunch at a mobile crèche outside Delhi, India. (Photo: Atul Loke/ODI)

High-yielding staple crops improve health and prosperity in developing countries

Written by Marcia MacNeil on . Posted in Features.

Several recent studies document the long-term health and economic benefits from the “Green Revolution” — the widespread adoption of high-yielding staple crop varieties during the last half of the 20th century — and argue for continued investment in the development and use of such varieties.

Analyzing data relating to more than 600,000 births between 1961 and 2000 across 37 developing countries, scientists led by the World Bank’s Jan von der Goltz found that the diffusion of modern crop varieties during the Green Revolution reduced infant mortality by 2.4 to 5.3 percentage points.

“Our estimates provide compelling evidence that the health benefits of broad-based increases in agricultural productivity should not be overlooked,” the authors state. “From a policy perspective, government subsidies for inputs leading to a green revolution as well as investments in extension and R&D programs seem to be important.”

Norman Borlaug (fourth from right) shows a plot of Sonora-64 wheat — one of the semi-dwarf, high-yield, disease-resistant varieties that was key to the Green Revolution — to a group of young international trainees at CIMMYT's experimental station in Ciudad Obregon, Sonora state, Mexico. (Photo: CIMMYT)
Norman Borlaug (fourth from right) shows a plot of Sonora-64 wheat — one of the semi-dwarf, high-yield, disease-resistant varieties that was key to the Green Revolution — to a group of young international trainees at CIMMYT’s experimental station in Ciudad Obregon, Sonora state, Mexico. (Photo: CIMMYT)

The COVID-19 pandemic exposed the fragility of the global food system and the need to transform it, increasing its environmental and economic resilience to withstand future threats, and underpinning healthier diets. The studies suggest that improved versions of cereal crops such as rice, wheat, and maize can play a key role.

“Our work speaks to the importance of supporting innovation and technology adoption in agriculture as a means of fostering economic development, improved health, and poverty reduction, said author Jan von der Goltz. “It also suggests that it is reasonable to view with some alarm the steady decline in funding for cereal crop improvement over the last few decades in sub-Saharan Africa, the continent with least diffusion of modern varieties.”

Likewise, a study co-authored by Prashant Bharadwaj of the University of California, San Diego, concluded that farmer adoption of high-yielding crop varieties (HYVs) in India reduced infant mortality dramatically across the country. Between 1960 and 2000, infant deaths dropped from 163.8 to 66.6 per 1,000 live births, and this occurred during the decades of India’s wheat productivity leap from 0.86 to 2.79 tons per hectare, as a result of HYV adoption and improved farming practices.

“What both of these papers do is to carefully establish a causal estimate of how HYVs affect infant mortality, by only comparing children born in the same location at different points in time, when HYV use was different, and by checking that mortality before arrival of HYVs was trending similarly in places that would receive different amount of HYVs,” Bharadwaj said.

“In the absence of a randomized control trial, these econometric techniques produce the best causal estimate of a phenomenon as important as the spread of HYVs during and after the Green Revolution,” he added. These thoughts were echoed by University of California San Diego professor Gordon McCord, a co-author of the global study.

A child buys fruits and vegetables from a street cart in Varanasi, India. (Photo: Gert-Jan Stads/International Food Policy Research Institute)
A child buys fruits and vegetables from a street cart in Varanasi, India. (Photo: Gert-Jan Stads/International Food Policy Research Institute) (CC BY-NC-ND 2.0)

Many knock-on effects

Recent studies indicate that the Green Revolution also had long-term economic impacts, which also affected health outcomes.

In a 2021 update to the 2018 paper “Two Blades of Grass: The Impact of the Green Revolution,” Douglas Gollin, Professor of Development Economics at Oxford University and co-authors found that, in 90 countries where high-yielding varieties were adopted between 1965 and 2010, food crop yields increased by 44% and that, had this adoption not occurred, GDP per capita in the developing world could be half of what it is today.

Even a 10-year delay of the Green Revolution would, in 2010, have cost 17% of GDP per capita in the developing world, with a cumulative GDP loss of $83 trillion, equivalent to one year of current global GDP.

These GDP and health impacts were boosted by a related reduction in population growth. By observing causal inference at country, regional and developing world levels, and using a novel long-term impact assessment method, the study authors detected a trend: as living standards improved for rural families, they generally wanted to invest more in their children and have fewer.

“Our estimates suggest that the world would have contained more than 200 million additional people in 2010, if the onset of the Green Revolution had been delayed for ten years,” Gollin and his co-authors stated.  This lower population growth seems to have increased the relative size of the working age population, which furthered GDP growth.

Ethiopian farmers give feedback to CGIAR researchers about durum wheat varieties. (Photo: C.Fadda/Bioversity International)
Ethiopian farmers give feedback to CGIAR researchers about durum wheat varieties. (Photo: C.Fadda/Bioversity International) (CC BY-NC-ND 2.0)

A long-term investment in system transformation

It takes time from the point of an intervention to when broad health impacts can be observed in the population, the authors note. For example, although the development of modern high-yielding varieties began in the 1950s and 60s, the rate of adoption did not speed up until the 1980s, 1990s, and even into the 2000s, with evidence from sub-Saharan Africa showing that variety adoption has increased by as much in the 2000s as in the four preceding decades.

In addition, any nutrition and food security strategy which aims to reach the second Sustainable Development Goal of feeding 9 billion by 2050 must incorporate wider system transformation solutions, such as zero-emissions agriculture, affordable, diverse diets and increased land conservation.

As Gollin explained, “The Green Revolution taught us that we need to approach productivity increases, especially in staple crop yields, differently. The challenge now is more complex: we need to get the same productivity increases, with fewer inputs and resources, more environmental awareness, and in larger quantities for more people.”

In part, this means increasing productivity on existing agricultural land with positive environmental and social impacts, according to Bram Govaerts, director general of the International Maize and Wheat Improvement Center (CIMMYT).

“Breeding and sharing more productive, hardy crop varieties is as important as ever,” Govaerts said, “but also engaging farmers — in our case, smallholders — in shared research and innovation efforts to bridge yield gaps, build climate-resilient farming systems, and open access to better nutrition and market opportunities.”

Cover photo: Children eat lunch at a mobile crèche outside Delhi, India. (Photo: Atul Loke/ODI) (CC BY-NC 2.0)

The Green Revolution was built on manipulating genes to breed higher-yielding, disease resistant crops. Here’s an ode to one of its pioneers, Sanjaya Rajaram

Written by Bea Ciordia on . Posted in In the media.

This tribute to the life and work of Sanjaya Rajaram, one of Norman Borlaug’s most impactful collaborators, also flags CIMMYT’s contribution to improving livelihoods and fostering more productive sustainable maize and wheat farming in low- and middle-income countries.

Read more: https://geneticliteracyproject.org/2021/05/05/the-green-revolution-was-built-on-manipulating-genes-to-breed-higher-yielding-disease-resistant-crops-heres-an-ode-to-one-of-its-pioneers-in-emembering-world-food-prize-laureate-sanjaya-rajaram-s/

A collage of shows images relating to different stages of the nitrogen cycle. (Graphic: Alfonso Cortés/CIMMYT)

Nitrogen in agriculture

Written by Emma Orchardson on . Posted in Explainers.

Nitrogen is the most essential nutrient in crop production but also one of the most challenging to work with. The compound is central to global crop production — particularly for major cereals — but while many parts of the world do not have enough to achieve food and nutrition security, in others excess nitrogen from fertilizer leaks into the environment with damaging consequences. 

What is nitrogen? 

Around 78% of the Earth’s atmosphere is made up of nitrogen gas or N2 — a molecule made of two nitrogen atoms glued together by a stable, triple bond.  

Though it makes up a large portion of the air we breathe, most living organisms can’t access it in this form. Atmospheric nitrogen must go through a natural process called nitrogen fixation to transform before it can be used for plant nutrition.  

Why do plants need nitrogen? 

In both plants and humans, nitrogen is used to make amino acids — which make the proteins that construct cells — and is one of the building blocks for DNA. It is also essential for plant growth because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (photosynthesis). 

The nitrogen cycle 

The nitrogen cycle is the process through which nitrogen moves from the atmosphere to earth, through soils and is released back into the atmosphere — converting in and out of its organic and inorganic forms. 

It begins with biological nitrogen fixation, which occurs when nitrogen-fixing bacteria that live in the root nodules of legumes convert organic matter into ammonium and then nitrate. Plants are able to absorb nitrate from the soil and break it down into the nitrogen they need, while denitrifying bacteria convert excess nitrate back into inorganic nitrogen which is released back into the atmosphere. 

The process can also begin with lightning, the heat from which ruptures the triple bonds of atmospheric nitrogen, freeing its atoms to combine with oxygen and create nitrous oxide gas, which dissolves in rain as nitric acid and is absorbed by the soil. 

Excess nitrate or that lost through leaching — in which key nutrients are dissolved due to rain or irrigation — can seep into and pollute groundwater streams. 

A diagram shows the process through which nitrogen moves from the atmosphere to earth, through soils and is released back into the atmosphere – converting in and out of its organic and inorganic forms. (Graphic: Nancy Valtierra/CIMMYT)
A diagram shows the process through which nitrogen moves from the atmosphere to earth, through soils and is released back into the atmosphere – converting in and out of its organic and inorganic forms. (Graphic: Nancy Valtierra/CIMMYT)

What about nitrogen fertilizer? 

For thousands of years, humans didn’t need to worry about nitrogen, but by the turn of the Twentieth Century it was evident that intensive farming was depleting nitrate in the soil, which raised concerns about the world’s rising population and a possible food crisis.  

In 1908, a German chemist named Fritz Haber devised a process for combining atmospheric nitrogen and hydrogen under extreme heat and pressure to create liquid ammonia — a synthetic nitrogen fertilizer. He later worked with chemist and engineer Carl Bosch to industrialize this process and make it commercially available for farmers.  

Once production was industrialized, synthetic nitrogen fertilizer — used in combination with new, high-yielding seed varieties — helped drive the Green Revolution and significantly boost global agricultural production from the late 1960s onwards. During this time Mexico became self-sufficient in wheat production, as did India and Pakistan, which were on the brink of famine.  

In today’s intensive agricultural systems, synthetic nitrogen fertilizer has become increasingly crucial. Worldwide, companies currently produce over 100 million metric tons of this product every year, and the Food and Agriculture Organization of the United Nations predicts that demand will continue to rise steadily, especially in Africa and South Asia. 

Is it sustainable? 

As demand continues to rise worldwide, the challenge of nitrogen management is to provide enough to meet global food security needs while minimizing the flow of unused nitrogen — which is 300 times more polluting than carbon dioxide — to the environment.  

While many regions remain short of available nitrogen to achieve food and nutrition security, in others nearly half of the fertilizer nitrogen applied in agriculture is leaked into the environment, with negative consequences including increased environmental hazards, irreparable land degradation and the contamination of aquatic resources. 

This challenge can be addressed by improving nitrogen use efficiency — a complex calculation which often involves a comparison between crop biomass (primarily economic yield) or nitrogen content/uptake (output) and the nitrogen applied (input) through any manure or synthetic fertilizer.  Improving this ratio not only enhances crop productivity but also minimizes environmental losses through careful agronomic management and helps improve soil quality over time.  

Currently, average global nitrogen use efficiency does not exceed 50%, which falls short of the estimated 67% needed to meet global food demand in 2050 while keeping surplus nitrogen within the limits for maintaining acceptable air and water qualities.  

Cutting-edge technological options for nitrogen management are on the horizon, though in the short-term nitrogen use efficiency can best be improved at farmer-level, by targeting fertilizer application, use of slow-release nitrogen fertilizers, using precision nitrogen application tools (Green Seeker) or fertigation using micro irrigation. 

A woman in India uses a precision spreader to apply fertilizer on her farm. (Photo: Wasim Iftikar)
A woman in India uses a precision spreader to apply fertilizer on her farm. (Photo: Wasim Iftikar)

Blue-sky technology 

Much progress has been made in developing technologies for an efficient nitrogen management, which along with good agronomy are proven to enhance crop nitrogen harvest and nitrogen use efficiency with lower surplus nitrogen. 

Scientists are investigating the merits of biological nitrification inhibition, a process through which a plant excretes material which influences the nitrogen cycle in the soil. Where this process occurs naturally — in some grasses and wheat wild relatives — it helps to significantly reduce nitrogen emissions. 

In 2007, scientists discovered biological nitrification traits in a wheat relative and in 2018 they succeeded in transferring them into a Chinese spring wheat variety. The initial result showed low productivity and remains in the very early stages of development, but researchers are keen to assess whether this process could be applied to commercial wheat varieties in the future. If so, this technology could be a game changer for meeting global nitrogen use efficiency goals. 

Norman E. Borlaug stands on a wheat field in Ciudad Obregón, Sonora state, Mexico. (Photo: CIMMYT)

The man who fed the world

Written by Rodrigo Ordóñez on . Posted in Videos.

Norman Borlaug was awarded the Nobel Peace Prize in 1970 in recognition of his contributions to world peace through increasing food production. In the latest episode of the BBC radio show Witness History, Rebecca Kesby interviews Ronnie Coffman, student and friend of Norman Borlaug.

Among other stories, Coffman recalls the moment when Borlaug was notified about the Nobel Prize — while working in the wheat fields in Mexico — and explores what motivated Borlaug to bring the Green Revolution to India.

Dr. Norman E. Borlaug

Written by Rodrigo Ordóñez on . Posted in Videos. 1 Comment on Dr. Norman E. Borlaug

 
CIMMYT fights hunger and poverty in the developing world through smarter agriculture. We are the world’s number one caretaker and developer of maize and wheat, two of humanity’s most vital crops. Maize and wheat are grown on 200 million hectares in developing countries. 84 million of those hectares are planted with varieties of CIMMYT seed. We also maintain the world’s largest maize and wheat seed bank at our headquarters in Mexico.

We are probably best known for prompting the Green Revolution, which saved millions of lives across Asia and led to CIMMYT’s Norman Borlaug receiving the Nobel Peace Prize. Because of population growth, natural resource degradation, and climate change the current challenge is to feed more people, with less resources, and in a more environmentally responsible way than ever before. It can be done.