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Theme: Nutrition, health and food security

As staple foods, maize and wheat provide vital nutrients and health benefits, making up close to two-thirds of the world’s food energy intake, and contributing 55 to 70 percent of the total calories in the diets of people living in developing countries, according to the U.N. Food and Agriculture Organization. CIMMYT scientists tackle food insecurity through improved nutrient-rich, high-yielding varieties and sustainable agronomic practices, ensuring that those who most depend on agriculture have enough to make a living and feed their families. The U.N. projects that the global population will increase to more than 9 billion people by 2050, which means that the successes and failures of wheat and maize farmers will continue to have a crucial impact on food security. Findings by the Intergovernmental Panel on Climate Change, which show heat waves could occur more often and mean global surface temperatures could rise by up to 5 degrees Celsius throughout the century, indicate that increasing yield alone will be insufficient to meet future demand for food.

Achieving widespread food and nutritional security for the world’s poorest people is more complex than simply boosting production. Biofortification of maize and wheat helps increase the vitamins and minerals in these key crops. CIMMYT helps families grow and eat provitamin A enriched maize, zinc-enhanced maize and wheat varieties, and quality protein maize. CIMMYT also works on improving food health and safety, by reducing mycotoxin levels in the global food chain. Mycotoxins are produced by fungi that colonize in food crops, and cause health problems or even death in humans or animals. Worldwide, CIMMYT helps train food processors to reduce fungal contamination in maize, and promotes affordable technologies and training to detect mycotoxins and reduce exposure.

A model project

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CIMMYT E-News, vol 3 no. 3, March 2006

 

Donors and farmers agree – Project gets high marks for important work

The Africa Maize Stress project (AMS), in which CIMMYT is a key partner, was termed “A flagship project” in a recently completed review. A three-member panel from the German Corporation for Technical Cooperation (GTZ) spent the week from 24 February–1 March with AMS staff and partners, to assess the performance of the project’s work from 2003-20005 and make recommendations for its future direction. Two of the six days were spent on field visits to the Kenya Agricultural Research Institute’s (KARI) Embu Center, one of the project’s major maize breeding sites; Bar Sauri Millennium Village, a beneficiary of AMS maize varieties; and Western Seed Company, a local seed enterprise that is multiplying and marketing the varieties.

Team leader, Dr. Manfed van Eckert, said the reviewers saw in AMS, qualities that could serve as a model for similar multi-faceted projects in Africa. Among these were the “excellent working relations with national partners, and the Eastern and Central African Maize and Wheat (ECAMAW) Research Network.”

The review congratulated CIMMYT maize breeder and AMS project coordinator Alpha Diallo for his management of the complex, multi-donor funded, partnership project. AMS is supported by Germany’s Federal Ministry for Economic Cooperation and Development (BMZ), the International Fund for Agricultural Development (IFAD), the Swedish International Development Cooperation Agency (SIDA), and the Rockefeller Foundation, and works with national agricultural research systems (NARS), NGOs and seed companies in 10 eastern and central African countries.

Review team member Jeffrey Luhanga commented that all too often breeders’ improved varieties “sit on the shelf for lack of solid partnerships with the seed sector. But this project’s successes are having a direct bearing on household nutrition, and especially on weanling children, among the most vulnerable people in Sub-Saharan Africa.” The dramatic quadrupling of maize yields recorded in 2005 at the Sauri Millennium village illustrates the point.

“The program has gone to the grassroots level; it is benefiting the people of Africa. Congratulations!” said van Eckert.

The Africa Maize Stress project is developing maize varieties that are tolerant to drought, low soil fertility, Striga weed, and endemic pests and diseases (maize streak virus, blight, and grey leaf spot), and is working with local partners to ensure that these varieties reach resource-poor farmers in its mandate regions. The project’s current phase is stepping up the development of imidazolinone-resistant (IR) maize varieties for Striga weed control, and quality protein maize (QPM) suited for African ecologies.

The GTZ team recommended that in its next phase, AMS advance current activities, but also broaden its geographical horizons, through strategic partnerships in “
war-torn areas in Southern Sudan and Somalia,” and “investigate sustainable financing options for maize breeding programs in the region.”

Other partners in the project include the International Institute of Tropical Agriculture (IITA) and national research programs like KARI in Kenya.

For more information contact Alpha Diallo (a.diallo@cgiar.org)

Improved maize varieties and partnerships welcomed in Bhutan

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CIMMYT E-News, vol 5 no. 11, November 2008

nov02Sandwiched between China and India, the Kingdom of Bhutan is a small country that relies on maize in a big way. But maize yields are typically low due to crop diseases, drought, and poor access to seed of improved varieties, among other reasons. CIMMYT is committed to improving Bhutan’s food security by providing high-yielding, pest-resistant maize varieties to farmers and capacity-building for local scientists.

“If there is no maize there is nothing to eat,” says Mr. S. Naitein, who farms maize on half a hectare of land in Bhutan. But it’s not easy to grow, he says, citing challenges such as animals (monkeys and wild boars), insects, poor soil fertility, drought, poor access to improved seed varieties, and crop diseases like gray leaf spot (GLS) and turcicum leaf blight (TLB).

But since planting Yangtsipa—an improved maize variety derived from Suwan-1, a variety introduced from CIMMYT’s former regional maize program in Thailand—Naitein has seen a real improvement in his maize yields. The local maize variety yielded 1,700 kilograms per hectare, whereas Yangtsipa gave him 2,400 kilograms per hectare, a 40% yield increase.

“It’s no wonder that Yangtsipa is by far the most popular improved variety among Bhutanese farmers,” says Guillermo Ortiz-Ferrara, CIMMYT regional cereal breeder posted in Nepal. “Nonetheless, many local varieties of maize still occupy large areas of the country and don’t yield well.”

Maize is a staple food in Bhutan. Many people eat Tengma (pounded maize) as a snack with a cup of tea and Kharang (maize grits) are also popular. “Among the food crops, maize plays a critical role in household food security, especially for the poor,” says Ortiz-Ferrara. About 38% of the rural Bhutanese population lives below the poverty line and some 37,000 households cultivate maize. It’s estimated that 80% of this maize is consumed at the household level, according to Bhutan’s Renewable Natural Resources Research Center (RNRRC).

Leaf us alone: CIMMYT maize varieties help combat foliar diseases

Many farmers in Bhutan have been struggling with crop diseases that cut maize yields. “The recent outbreak of gray leaf spot and turcicum leaf blight affected 4,193 households and destroyed over 1,940 hectares of maize crop,” says Thakur Prasad Tiwari, agronomist with CIMMYT-Nepal. He estimates that maize is grown on 31,160 hectares in the country.

Gray leaf spot is a devastating leaf disease that is spreading fast in the hills of Bhutan and Nepal. To deal with this threat, CIMMYT sent more than 75 maize varieties with possible resistance to GLS and TLB to Bhutan in 2007. Tapping into the resources of its global network of research stations, CIMMYT sent seed from Colombia, Zimbabwe, and Mexico that was planted in GLS and TLB ‘hot spot’ locations in the country.

Ortiz-Ferrara and Tiwari then worked with Tirtha Katwal, national maize coordinator-Bhutan, and his team to evaluate these materials for their resistance.

“Together we identified the top performing lines for gray leaf spot and turcicum leaf blight which will be excellent candidates for Bhutan’s maize breeding program,” says Ortiz-Ferrara. “We are now combining their disease resistance with Yangtsipa, because we know it is high-yielding and well-adapted to Bhutan.”

Kevin Pixley, associate director of CIMMYT’s Global Maize Program, helped to develop a detailed breeding scheme or work plan for Bhutan’s national GLS breeding program. “We want to provide capacity-building for local maize scientists so they themselves can identify and breed varieties that show resistance to crop diseases,” he says.

“We feel more confident in moving forward with the next steps in our breeding program,” said Katwal. He and his team also attended a training course on seed production, de-tasselling, and pollination given by Dr. K.K. Lal, former CIMMYT maize trainee and former chief of the Seed Quality Control Center at the Ministry of Agriculture and Cooperatives (MoAC) in Nepal.

nov03

That’s what friends are for: CIMMYT, Nepal, and Bhutan collaboration

In 2001, Bhutan began collaborating on maize research with CIMMYT-Nepal, the National Maize Research Program (NMRP) of Nepal, and the Hill Maize Research project (HMRP) funded by the Swiss Agency for Development and Cooperation (SDC) in Nepal. The terrain and agro-climatic conditions of Bhutan and the Nepalese highland are similar, meaning that technologies adapted for Nepal will likely work well in neighboring Bhutan.

CIMMYT aims to facilitate regional and national partnerships that benefit farmers. For instance, during the past 7 years CIMMYT-Nepal has worked with NMRP and RNRRP to introduce 12 open-pollinated varieties (OPVs) to Bhutan. These modern varieties yield more than the local varieties whose seed farmers save to sow from year to year. Included in these 12 OPVs were several quality protein maize (QPM) varieties; these have nearly twice as much usable protein as other traditional varieties of maize.

nov04“Our CIMMYT office in Nepal has assisted Bhutan with maize and wheat genetic material, technical backstopping, training, visiting scientist exchange, and in identifying key consultants on research topics such as grey leaf spot and seed production,” says Tiwari.

Simply put, CIMMYT has useful contacts. For example, at the request of Bhutan’s Renewable Natural Resources Research Center (RNRRC), CIMMYT-Nepal put forward Dr. Carlos De Leon, former CIMMYT regional maize pathologist, to conduct a course on identifying and controlling maize diseases in February 2007. In September 2008, CIMMYT and HMRP also recommended two researchers (Dr. K.B. Koirala and Mr. Govinda K.C.) from Nepal’s NMRP to give a course on farmer participatory research that has been successful in the dissemination of new technologies.

“Ultimately, our goal is to improve the food security and livelihood of rural households through increased productivity and sustainability of the maize-based cropping system,” says Thakur Prasad Tiwari.

For information: Guillermo Ortiz-Ferrara, cereal breeder, CIMMYT-Nepal (g.ortiz-ferrara@cgiar.org) or Thakur Prasad Tiwari, agronomist, CIMMYT-Nepal (tptiwari@mos.com.np)

Gap filler

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CIMMYT E-News, vol 3 no. 3, March 2006

Triticale finds a niche in Bangladesh

“This is just what I was looking for,” says Al Mahmoud Hasan, a farmer near the town or Rangpur in Bangladesh. “I wanted a crop to fill the fallow gap between the rice crops.”

In Bangladesh rice is king, with farmers often growing two rice crops a year. Now, in a pilot project funded by the Danish development agency, Danida, a new crop is making its debut. The aim of the on-farm trials is to see if triticale can make a difference in the lives of Bangladeshi farm families who keep dairy cattle.

Triticale is a cross between wheat and rye that CIMMYT researchers and partners have improved and promoted over recent decades. It makes good animal fodder because its leaves and stem are high in protein. In Bangladesh triticale was virtually unknown. Cows can eat Napier grass when it is in season but feed mostly on a diet of dry rice straw, a poor quality fodder. CIMMYT researchers realized that even in the intense cropping system in Bangladesh, there might be room for triticale as a high-quality cattle forage, filling a gap in the cropping season and a gap in cattle diets.

During the rainy season virtually every farmer in Bangladesh grows aman or monsoon rice. Then during the dry season they usually grow another rice crop (called boro), wheat, or even tobacco. Triticale can fit that second crop niche. The idea is to plant triticale as early as possible after the rice harvest and then cut it at 30 days and again at 50 days. The green cuttings are used as fodder. When the crop does mature, the grain can be used to feed chickens or ground and combined with wheat flour for Chapatti, the standard flat bread of south Asia.

Rokeya Begum has cash and 20% more milk from triticale-fed cows.

Farmers who grow two full rice crops also have an option with triticale. That is because there is a 60 day fallow period between the two rice crops. It isn’t enough time for triticale to mature and produce grain, but it is long enough to produce good green fodder. That is exactly what Al Mahmoud Hasan is doing. He and his family were among 120 households participating in the trials throughout Bangladesh. He, his wife and his two oldest children received instruction in triticale cultivation as part of a whole family training system organized by CIMMYT and partners.

Participation and training has paid off for other farmers, including Rokeya Begum and her family. She sold her first triticale cut to neighbors and used the money to buy new clothes for an important religious festival. Mrs Begum also says her cows are giving 20% more milk on triticale than they did on a diet of rice straw.

The triticale seed for the trials came from CIMMYT in Mexico. The one-year pilot project is near its end and the data are not yet analyzed but reports from participating farmers are encouraging. Many like Mrs. Begum say their neighbors will buy seed from them for next season so they too can try triticale.

For further information contact Stephen Waddington (s.waddington@cgiar.org)

Maize without borders: Reforming maize seed sector policies to meet farmers’ needs in Africa

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CIMMYT E-News, vol 5 no. 10, October 2008

Senior policy makers from sub-Saharan Africa have recently made recommendations for policy actions to reform operations in the maize seed sector. At stake is better access for millions of small-scale farmers to affordable, quality seed of maize, the region’s food staple. CIMMYT is closely involved.

oct01In the 2006-07 cropping season, 82 registered maize seed companies produced the bulk of just over 100,000 tons of improved maize seed that were marketed in the major maize producing countries of eastern and southern Africa (excluding South Africa) — enough to sow 35% of the maize land in those countries.

A recent CIMMYT study found that restrictive national policies, lack of credit opportunities, inadequate seed production capacities, insufficient numbers of recently released public sector varieties, and challenging marketing situations were the main reasons why maize seed sector growth is slow in many African countries. Worse, this situation contributes significantly to Africa’s poor food security and farm incomes.

“The good news is that we have today four times more seed companies than ten years ago and they have increased seed provision from 26% to 35% of the total planted maize area,” says CIMMYT socioeconomist Augustine Langyintuo. “Yet there is still a significant, unmet demand for seed, and this underscores the need for new policies that support efficient seed production, processing, and marketing.”

In 2007 Langyintuo led the above-mentioned study to characterize seed providers and bottlenecks to seed supplies in eastern and southern Africa. A total of 117 representatives from seed companies, national research programs, and CBOs/NGOs participated, and information was gathered on the seed sectors in Angola, Ethiopia, Kenya, Malawi, Mozambique, South Africa, Tanzania, Uganda, Zambia, and Zimbabwe.

In July 2008, more than 60 senior policy makers from agriculture ministries, private seed companies, seed trade associations, and regional trade blocs from 13 sub-Saharan African countries met in Nairobi, Kenya and recommended ways to improve farmers’ access to seed of improved drought tolerant maize varieties through specific policy actions to enhance the production, release, and marketing of these varieties. They agreed with the findings of the 2007 seed sector study.

Understanding the hurdles

The main findings were that investment capital requirements and a shortage of qualified staff hinder the growth of small, local seed companies that have emerged over the past decade, according to Langyintuo. “The costs of setting up and running an office, recruiting and retaining qualified personnel, and procuring and operating production, processing, and storage facilities are beyond what many local businesses can afford, and access to operational credit is limited or nil,” he says.

oct02

Up to 60% of a seed company’s operational budget goes into seed production. Seed companies, therefore, need affordable credit over the mid-to-long term to produce enough seed to meet farmers’ needs. Marketing seed is also costly. “Most companies rely on third-party agents such as agro-dealers, large retail stores, NGOs, or the government to retail most of their seed,” says Langyintuo. “The majority of the agro-dealers lack funds to purchase seed, and so must take it on consignment, forcing companies to retrieve unsold seed at cost. The dealers are normally not knowledgeable enough about the seed they sell to promote it effectively, and some of them have also been known to adulterate seed with mere grain.”

Other hurdles identified include cumbersome varietal release, registration, and seed certification regulations, as well as a weak producer base, slow access to the best germplasm, uncompetitive prices in local grain markets, low adoption rates of improved varieties, restrictions on cross-border trade in seed, and poor infrastructure (such as bad roads and inadequate storage facilities).

Policy actions needed

To get farmers the seed they want will involve a range of players in the maize seed sector and calls for specific policy actions. Participants in the July 2008 meeting identified ways in which governments and international centers like CIMMYT and the International Institute of Tropical Agriculture (IITA) can assist and support current seed companies to improve their seed outputs and profits.

“The government is supporting the maize seed sector through initiatives such as increasing investments in agricultural research and extension, training of agro-dealers, and developing the National Seed Industry Policy,” confirms Kenya’s Assistant Minister of Agriculture, Japheth Mbiuki.

“Seed companies would benefit from access to a wider range of improved maize varieties, good seed production sites, affordable inputs, and training in effective business practices,” adds Langyintuo. CIMMYT normally distributes its experimental varieties freely to everyone, but granting companies some degree of exclusivity in their use would facilitate branding and promote sales. This would have to be tailored to specific country and company contexts, according to Langyintuo.

Maize seed without borders

No country is an island, and with increasing regional integration of economies around the world, it makes sense that the region should move as one in developing its maize seed sector. Regional trade blocs such as the Common Market for Eastern and Southern Africa (COMESA) are key. “Specific actions and commitments by national governments include dedicating increased funds (at least 10% of their national budgets) for agricultural development and harmonization of regional seed regulations,” says Ambassador Nagla El-Hussainy, COMESA Assistant Secretary General. “This will improve rates of variety release, lower costs in dealing with regulatory authorities, increase trade in seed of improved varieties and, ultimately, adoption by farmers.” In East Africa, for instance, the national seed policies of Kenya, Uganda and Tanzania are at various stages of development and are set to be harmonized soon.

“Effective trade and risk management strategies that buffer seed supply within countries are needed to stabilize and increase maize production in the region,” says Marianne BĂ€nziger, CIMMYT Global Maize Program Director. “These will mitigate the impact of drought and national production fluctuations, which are some of the harsh realities that farmers and consumers face.”

“Where applicable, carrying out the distinctness, uniformity and stability (DUS) tests alongside national performance trials (NPT) could speed up varietal releases,” adds Langyintuo. “Farmers’ awareness of the usefulness and availability of new varieties can be raised through improved extension message delivery, widespread demonstrations, and better retail networks.”

According to Richard Amoussou, an Assistant Secretary in the Ministry of Agriculture in Benin: “The links between (community-based) seed producers and seed companies should be strengthened through contracts. This will ensure that quality seed is produced and sold to seed companies, who must finally distribute the seed to the farmers, thus improving their access.”

“Streamlining the seed sector will directly benefit the productivity and incomes of small-scale farmers and result in more and more affordable food for consumers – significant in the current global food crisis,” concludes BĂ€nziger. She says this is crucial, given the twin challenges of the global food price crisis and more frequent droughts due to climate change.

For more information: Augustine Langyintuo, socioeconomist (a.langyintuo@cgiar.org)

I have farmed forever

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June, 2005

How quality protein maize is changing lives in one Indonesian village.

“I have farmed forever,” says Yasam Saanim. He works the steep slopes of the mountainous land near the village of Carin on the Indonesian island of Java. From childhood his life has been one of hard labor with little reward. He and his wife struggled to raise seven children on their tiny piece of rented land. With no money of his own Yasam has to borrow from the landowner every year to buy fertilizer for his third of a hectare of rice. He also grows a few bananas, cassava, sweet potatoes, and durian, a pungent Southeast Asian delicacy. In return he pays the landowner 180 kg of rice at harvest. He does not think it is a fair deal but says he has no choice. The family survives but Yasam has never had money. It has been that way all his life.

Now, at the age of seventy, he finally sees some light in the seemingly endless tunnel of hopelessness that has been his lot as a tenant farmer.

The landowner has decided to plant maize—in particular, quality protein maize—on 1.2 hectares of land adjacent to Yasam’s. Quality protein maize is a high lysine and tryptophan type developed by CIMMYT. It can enhance the nutrition of the poor whose diets depend heavily on maize and raise the quality of maize-based pig and poultry feeds. The landowner’s maize production is for seed, which markets locally at five times the value of grain and reflects Java farmers’ growing interest in quality protein maize. To Yasam’s delight, he and some village women were hired to weed, fertilize, and harvest the plot. Yasam earns 12,500 Indonesian Rupiahs (US $1.30) for each half day he works. The women are paid less (7,500 Rupiahs), but in a village with little money this new income is very welcome.

On the island of Java, Yasam tends this plot of quality protein maize for his landowner.

Indonesia has released two open-pollinated varieties of quality protein maize. They were developed using experimental varieties from CIMMYT by Dr. Marsum Dalhan, head of the Breeding and Germplasm Section of the Indonesian Cereal Research Institute. Marsum has benefited both from CIMMYT training activities and through support for his work from the Asian Development Bank.

Virtually no maize is grown around Carin. That is good news for landowners who produce maize seed and, especially, that of quality protein maize. Because the quality protein trait is “recessive”—that is, both parents must carry it and pass it on, for it to be expressed in offspring—any plants that are fertilized with pollen from other types of maize will not produce quality protein seed.

The economics look good to the landowner. He produces two crops of quality protein seed a year. Still there is a risk. The market for this maize is in its infancy in Indonesia where most animal feed is artificially fortified with lysine at the feed mill. Nevertheless, Yasam Saanim, a person who has farmed forever, beams with cautious optimism. “It looks like we will have a benefit from the maize,” he smiles.

CIMMYT fights the food crisis in developing countries

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photo-storyAfter decades of stability, world food prices jumped more than 80% in 2008. Recent good harvests have brought prices down, but not to previous, historically-low levels, and most economists expect food costs to remain at much higher levels than before. At any moment catastrophic events like a drought or major crop disease outbreak could shock fragile grain markets and quickly send values skyrocketing anew.

People in wealthy nations feel food price inflation pinching their budgets, but may have a hard time imagining its effects on the extreme poor in developing countries. Poor people spend half or more of their meager incomes on food, and now must eat less each day or subsist on lower-quality fare. According to FAO Director General, Dr. Jacques Diouf, the number of persons who suffered from malnutrition had already risen from 850 to 925 million in 2007, even before the worst effects of the food price increases were felt in 2008. The current global financial crisis has exacerbated price increases and pushed already inadequate foodaid efforts to the breaking point. Rising unemployment will put even less-expensive food out of reach for many more of the world’s poor people.

CIMMYT trustee wins prize for work on boosting yields and zinc in wheat

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June, 2005

Ismail Cakmak, recently appointed to the CIMMYT Board of Trustees, accepted the International Crop Nutrition Award from the International Fertilizer Industry Association (IFA) this month for his work in Turkish agriculture to improve the grain yield and amount of zinc in wheat. In addition to the potential health benefits, his work has allowed farmers to reap an economic benefit of US $100 million each year.

In a NATO-Science for Stability program, Cakmak, a longtime CIMMYT partner, and colleagues from the University of Cukurova in Adana and National Research Institutions of the Ministry of Agriculture in Konya and Eskisehir, found that wheat harvests in Turkey were limited by a lack of zinc in the soil. When the plants were fed zinc-fortified fertilizer, researchers noticed spectacular increases in wheat yields. Ten years after the problem was diagnosed, Turkish farmers now apply 300,000 tons of the zinc-fortified fertilizers per year and harvest wheat with twice the amount of zinc.

HarvestPlus, a CGIAR Challenge Program, estimates that over 1.3 billion South Asians are at risk for zinc deficiency. Finding a more sustainable way to enrich the level of zinc in wheat is a goal for Cakmak, his CIMMYT colleagues, and HarvestPlus, which breeds crops for better nutrition. “Providing grain with high zinc content to people in Turkey should lead to significant improvements in their health and productivity. One can achieve this goal by applying fertilizers, a short-term answer, or through a more cost-effective and sustainable solution—breeding,” Cakmak says.

Zinc fertilizer was applied to the soil beneath

CIMMYT and HarvestPlus are set to do this and have already bred high-yielding wheat varieties with 100% more zinc than other modern varieties. CIMMYT agronomist and HarvestPlus Wheat Crop Leader Ivan Ortiz-Monasterio says, “We intend to have modern, disease resistant varieties be the vehicle for getting more micronutrients into people’s diets.” Further research this year involves testing the bioavailability of the grain’s doubled zinc content to see if it can improve human health in Pakistan.

“Today, a large number of the world’s peoples rely on wheat as a major source of dietary energy and protein. For example in Turkey, on average, wheat alone provides nearly 45% of the daily calorie intake, it is estimated that this ratio is much higher in rural regions,” Cakmak says. It is hoped that this project, which uses agricultural practices to address public health while improving crop production, can be extrapolated to other zinc-deficient areas of the world.

For further information, contact Ismail Cakmak (cakmak@sabanciuniv.edu) or Ivan Ortiz-Monasterio (i.ortiz-monasterio@cgiar.org).

Genetic modification—yes or no? London Science Museum stages global debate

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CIMMYT E-News, vol 6 no. 1, January 2009

 

They draw fierce criticism from environmental groups, are hailed by some companies and scientists as a solution to global hunger, and chances are you’ve eaten them. Released commercially more than a decade ago, genetically modified (GM) crops and food products still cause controversy. In an attempt to set the record straight and generate productive discussion, the Science Museum in London recently hosted a debate on the pros and cons of GM technologies in the context of the global food price crisis. Rodomiro Ortiz, CIMMYT scientist and director of resource mobilization, took part with viewpoints from a science and development perspective.

Centers like CIMMYT and its partners in developing countries have achieved enormous success using conventional breeding methods to improve maize and wheat varieties. Farmers in developing countries grow seed derived from these efforts on nearly 100 million hectares worldwide, which has increased yields and helped lower the price of main staple crops.

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Reducing damage to grain stores of the poor

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December, 2004

Saving grain from hungry pests can significantly improve the food security and livelihoods of farm households in the developing world’s poorest areas.

Even if poor farmers have a good maize harvest, many who live in humid environments and do not have effective storage containers face significant grain losses in the following months. Grain can suffer 80% damage and 20% weight loss within six months after harvest in Mexico’s harsh tropical environments, where grain-damaging insects thrive, according to CIMMYT entomologist David Bergvinson. “Two major pests in Africa—maize weevil and larger grain borer—can consume as much as 15% of a harvest in a few months,” says Bergvinson. Working on reducing storage losses is one way that he and other CIMMYT scientists target impoverished areas, increasing food security and allowing farmers to enter grain markets when prices are favorable.

Participatory Breeding to Foil Weevils

There are several ways to lessen grain damage. Farmers can remove infested grain and thoroughly clean storage facilities to eliminate insects before storing new grain. Improved grain storage technologies, such as silos, also help. Finally, scientists can breed maize to be more insect resistant with tighter husks or harder kernels. “With resistance as an inherent part of seed, farmers can cut back on the use of noxious pesticides,” says Bergvinson.

Working to breed hardier maize, Bergvinson crossed farmers’ varieties in Mexico with insect-resistant and drought-tolerant CIMMYT varieties and returned the seed to farmers for planting in mid-2004. Researchers also planted these crosses on farms near CIMMYT research stations to evaluate their performance, to make controlled pollinations, and to compare farmers’ selections with their own. “Our ultimate goal is to increase the genetic diversity of landraces with resistance to production constraints identified by farmers,” says Bergvinson. Farmers most often asked for drought and weevil resistance to be added to their landraces.

Targeting Peaks of Poverty
Bergvinson and his associates are working with 54 farmer varieties for lowland tropical areas of Mexico and 36 for higher altitudes (1,200-1,800 meters above sea level). It is in many of these hill zones where poverty and maize-bean subsistence farming go hand in hand. The methods applied could have relevance for smallholder maize farmers in other parts of Latin America and in Africa.

In preparation for extending their efforts to reach more of the poor, the researchers have also sampled farmer varieties in eight Mexican locations identified in a recent CIMMYT study (see Maps Unearth New Insights for Research to Help the Poor) as having a high concentration of the poor. “We’re working with farmers in these areas to improve their varieties for traits they identify, such as resistance to storage pests and, in hill zones, stronger roots and stems so that plants don’t fall over in strong winds,” Bergvinson says. The researchers are also taking care to maintain other traits that farmers value. One example in lowland areas is the long husks that farmers remove and sell as wrapping for the popular Mexican dish known as “tamales.” In some communities, husks for this purpose are worth more than the grain (see Rural Mexico and Free Trade: Coping with a Landscape of Change).

Global Science to Protect Grain

Bergvinson belongs to a worldwide community of researchers applying science at all levels to develop pest-resistant maize. “A small but noticeable renaissance in the use of resistant varieties to minimize storage losses is taking place worldwide, especially for ecologies where storage infrastructure doesn’t exist,” says Bergvinson. He says researchers have made significant progress in understanding the biochemical, biophysical, and genetic bases for resistance, among other things to ensure the traits satisfy consumer demands. Such traits are being “mapped” using DNA technology to confirm their role in resistance and to identify the genes involved. “The real potential of this technology will be felt in developing countries,” Bergvinson explains. “The resistance is packaged in the seed and designed to ensure that farmers have the option to recycle seed, a practice common to small-scale farmers.”

For more information: d.bergvinson@cgiar.org

Maize in Kenya: The search for a successful subsidy

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CIMMYT E-News, vol 6 no. 3, April 2009

It is a common dilemma for non-profits and assistance programs: how to deliver benefits to the needy without creating dependency or disrupting markets. Addressing this problem, Maize Seed for the Poor (MSP), a pilot project in Kenya, is exploring ways to offer farmers subsidized agricultural inputs to boost farm productivity, while also energizing local seed markets.

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New greenhouse supports research on yellow rust in Nepal

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December, 2004

On December 1, CIMMYT handed over a greenhouse to the Plant Pathology Division of the Nepal Agricultural Research Council (NARC). Built with the support of CIMMYT’s project on foliar pathogens and funded by Belgian Development Cooperation (DGCD), this greenhouse will help sustain research on wheat diseases, despite Nepal’s current social conflict.

At a ceremony in Khumaltar, CIMMYT regional pathologist Etienne Duveiller delivered the greenhouse keys to T.K. Lama, Chief of the Plant Pathology Division. The new facility will help NARC scientists screen for resistance in wheat against yellow rust, a potentially devastating disease in the hill areas of Nepal. Grain losses can soar to 30% when early outbreaks occur, as demonstrated by last year’s severe epidemic in parts of the Kathmandu Valley.

Replacing Outmoded Resistance

Due to the breakdown of resistance in popular varieties like Sonalika, which date back to the Green Revolution, yellow rust epidemics have occurred in Nepal since the mid-1980s. In 1997, a new strain of the rust pathogen became prevalent in the Nepal hills—a strain that is virulent against Yr9, a gene from rye that has conferred resistance to yellow rust in many improved wheats.

To develop disease resistant plants, breeders artificially inoculate fields of experimental varieties and select the individuals or families that survive and produce grain. With help from CIMMYT, advanced lines from Nepal are tested annually in Pakistan to ensure that promising genotypes are exposed to new pathotypes of yellow rust from western Asia. But research of this type in Nepal has suffered in recent years, mainly from a lack of inoculum to apply to experimental plants. First, insecurity in Nepal has caused severe financial constraints and reduced operations for national agricultural research scientists. Second, there is a lack of proper facilities to produce rust inoculum for the timely inoculation of breeders’ fields. An alternate approach used—collecting natural inoculum that survives in off-season wheat crops—became nearly impossible after a series of dry years eliminated this source of the pathogen and security restrictions made travel impossible in remote hilly regions. Finally, less than optimal moisture in the screening fields of Khumaltar, where the Plant Pathology Division is located, has necessitated repeated applications of fresh inoculum.

The timely production of inoculum in the new greenhouse will improve this situation. This greenhouse has a robust and simple cooling system to control temperature, as well as a misting system that guarantees proper humidity. It will allow both screening against yellow rust under optimal conditions and the multiplication of inoculum. Since the wheat season is just starting, researchers working on other diseases and crops will benefit from having inoculum ready for breeders’ plots in January.

Preserving Spores and Global Partnerships

In an important recent accomplishment, according to Duveiller, Senior Wheat Pathologist Sarala Sharma was able to produce fresh inoculum directly from leaf samples collected last season, using local methods and dried leaves. “This is the first time that she was able to preserve inoculum from last March,” says Duveiller. “Yellow rust must be kept alive for multiplication in the greenhouse and cannot be grown on artificial media. The main problem is that it is very sensitive to high temperatures. In Nepal, power failures, poor refrigeration, and no possibilities of vacuum preservation make it hard to keep spores.”

During the greenhouse opening ceremony, Sharma underlined the importance of the long-standing collaboration between NARC and CIMMYT. She acknowledged CIMMYT’s continuous support, initiated by former CIMMYT wheat pathologists Jesse Dubin and the late Eugene Saari, who encouraged scientists to collect inoculum from rust-prone areas as a way to record the disease’s incidence and spread. These surveys had continued with support from Duveiller until recently, when traveling by road became difficult. Also recognized at the ceremony were the benefits of training on yellow rust pathotyping that Nepali scientists had received at IPO-Wageningen, the Netherlands, and Shimla, India.

CIMMYT wheat pathologist, Etienne Duveiller, with colleagues in Nepal.

Similar work may become possible now in Nepal, according to Duveiller. “This greenhouse, built with Indian technology and including inexpensive but sturdy polyethylene sheets for siding, is another example of the importance CIMMYT ascribes to rust diseases on wheat in Nepal and south Asia,” says Duveiller. The center recently funded the installation of a sprinkler system for use in disease resistance experiments at Bhairhawa farm in the Tarai Plains, where the Nepal Wheat Research Program is based.

The greenhouse handover ceremony was combined with the farewell party for two NARC pathologists who retired recently, K. Shrestha and C.B. Karki. A recognized rust pathologist and longtime CIMMYT friend, Karki received his Ph.D. from Montana State University and attended the second Regional Yellow Rust Conference in Islamabad, Pakistan, in March 2004. Dr. K. Shrestha attended CIMMYT’s conference on helminthosporium blight in Mexico.

For more information: e.duveiller@cgiar.org

Moving uphill: Maize’s growing role in Ethiopia

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CIMMYT E-News, vol 6 no. 1, January 2009

 

Fueled by high-yielding varieties and national initiatives to promote the crop in highland areas, maize’s popularity is mounting rapidly in Ethiopia. Because farmers can get more food and income with the new varieties, they are calling out for seed. Suppliers—both private and government supported—are clamoring to meet the demand

“Farmers have expressed strong feelings for maize,” says a translator. A group of villagers at Sororo, Ejere District, Oromia, stand in the intense, mid-morning glare of highland Ethiopia and speak to visitors about their experiences with the improved maize varieties they had received from Demissew Abakemal, maize breeder with the Ethiopian Institute of Agricultural Research (EIAR). “It was a very dry year, and your maize is performing well,” the farmers say. “We have a surplus for food and even some for taking to the market—something we’d not seen in all our lives.” They have been harvesting and piling sheaves of wheat from the bottom of the hill, but take the visitors to maize fields up near their dwellings, and proudly show the large ears of the hybrid Arganne and a nearly-as-productive open-pollinated variety (OPV), Hora.

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New edition of popular field guide on maize diseases

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December, 2004
Reducing Damage to Grain Stores of the Poor

Saving grain from hungry pests can significantly improve the food security and livelihoods of farm households in the developing world’s poorest areas.

Even if poor farmers have a good maize harvest, many who live in humid environments and do not have effective storage containers face significant grain losses in the following months. Grain can suffer 80% damage and 20% weight loss within six months after harvest in Mexico’s harsh tropical environments, where grain-damaging insects thrive, according to CIMMYT entomologist David Bergvinson. “Two major pests in Africa—maize weevil and larger grain borer—can consume as much as 15% of a harvest in a few months,” says Bergvinson. Working on reducing storage losses is one way that he and other CIMMYT scientists target impoverished areas, increasing food security and allowing farmers to enter grain markets when prices are favorable.

Participatory Breeding to Foil Weevils

There are several ways to lessen grain damage. Farmers can remove infested grain and thoroughly clean storage facilities to eliminate insects before storing new grain. Improved grain storage technologies, such as silos, also help. Finally, scientists can breed maize to be more insect resistant with tighter husks or harder kernels. “With resistance as an inherent part of seed, farmers can cut back on the use of noxious pesticides,” says Bergvinson.

Working to breed hardier maize, Bergvinson crossed farmers’ varieties in Mexico with insect-resistant and drought-tolerant CIMMYT varieties and returned the seed to farmers for planting in mid-2004. Researchers also planted these crosses on farms near CIMMYT research stations to evaluate their performance, to make controlled pollinations, and to compare farmers’ selections with their own. “Our ultimate goal is to increase the genetic diversity of landraces with resistance to production constraints identified by farmers,” says Bergvinson. Farmers most often asked for drought and weevil resistance to be added to their landraces

Targeting Peaks of Poverty
Bergvinson and his associates are working with 54 farmer varieties for lowland tropical areas of Mexico and 36 for higher altitudes (1,200-1,800 meters above sea level). It is in many of these hill zones where poverty and maize-bean subsistence farming go hand in hand. The methods applied could have relevance for smallholder maize farmers in other parts of Latin America and in Africa.

In preparation for extending their efforts to reach more of the poor, the researchers have also sampled farmer varieties in eight Mexican locations identified in a recent CIMMYT study (see Maps Unearth New Insights for Research to Help the Poor) as having a high concentration of the poor. “We’re working with farmers in these areas to improve their varieties for traits they identify, such as resistance to storage pests and, in hill zones, stronger roots and stems so that plants don’t fall over in strong winds,” Bergvinson says. The researchers are also taking care to maintain other traits that farmers value. One example in lowland areas is the long husks that farmers remove and sell as wrapping for the popular Mexican dish known as “tamales.” In some communities, husks for this purpose are worth more than the grain (see Rural Mexico and Free Trade: Coping with a Landscape of Change).

Global Science to Protect Grain

Bergvinson belongs to a worldwide community of researchers applying science at all levels to develop pest-resistant maize. “A small but noticeable renaissance in the use of resistant varieties to minimize storage losses is taking place worldwide, especially for ecologies where storage infrastructure doesn’t exist,” says Bergvinson. He says researchers have made significant progress in understanding the biochemical, biophysical, and genetic bases for resistance, among other things to ensure the traits satisfy consumer demands. Such traits are being “mapped” using DNA technology to confirm their role in resistance and to identify the genes involved. “The real potential of this technology will be felt in developing countries,” Bergvinson explains. “The resistance is packaged in the seed and designed to ensure that farmers have the option to recycle seed, a practice common to small-scale farmers.”

For more information: d.bergvinson@cgiar.org

No maize, no life!

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CIMMYT E-News, vol 6 no. 4, June 2009

In Morogoro, a drought-prone area in Tanzania, farmers are using certified maize seed and urging other farmers to grow a new drought tolerant variety, TAN 250, which they say is like “an insurance against hunger and total crop failure, even under hot, dry conditions like those of recent years.”

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