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Maize lethal necrosis field day demonstrates promising maize germplasm

Participants see a demonstration of artificial inoculation at MLN screening site. photo K. Kaimenyi /CIMMYT
Participants see a demonstration of artificial inoculation at MLN screening site. Photo: K. Kaimenyi/CIMMYT

NAIROBI — Since maize lethal necrosis (MLN) was first reported in Kenya in 2011, CIMMYT and its partners, including Kenya Agricultural and Livestock Research Organization (KALRO), have been intensively engaged in breeding for resistance to the disease, which was later confirmed to be present in D.R. Congo, Ethiopia, Rwanda, Tanzania and Uganda.

KALRO and CIMMYT invited public and private sector partners in eastern Africa to a MLN field day at the screening facility at KALRO-Naivasha on 20 January 2016. KALRO Director General Eliud Kireger officially opened the field day, which was attended by about 70 participants from national agricultural research organizations, multinational, regional and national seed companies, national plant protection agencies, international institutions, the United States Agency for International Development (USAID) and CIMMYT.

The field day demonstrated 21,074 maize germplasm entries from 16 institutions, including public and private sector partners. Several promising inbred lines and pre-commercial hybrids with tolerance/ resistance to MLN were on display in the field blocks. These included MLN tolerant/resistant hybrids that are currently undergoing national performance trials (NPTs) in eastern Africa.

Kireger expressed his appreciation for the work being done at the facility and pointed out, “Last year there were very few germplasm entries offering promise against MLN at the screening site. Today we have seen materials that have potential to be released in the next two years or less.”

“Within the next few years, we can reach out to the farmers in eastern Africa with seed of MLN resistant varieties. We can now confidently tell farmers and the ministries of agriculture that there is a strong ray of hope,” he added.

Using molecular marker assisted breeding, CIMMYT is currently working on more than 25 elite inbred lines that are susceptible to MLN but are parental lines of several prominent commercial maize hybrids in sub-Saharan Africa.

“Our vision of replacing a large set of commercial MLN-susceptible varieties with MLN-resistant hybrids is well on track. Within three or four years we hope to have at least 20 to 25 MLN-resistant hybrids released, scaled up and delivered to farmers in eastern Africa with the help of our seed company partners,” stated B.M. Prasanna, Director of CIMMYT’s Global Maize Program and the CGIAR Research Program MAIZE.

Collaborative work at the MLN facility will continue to help partners identify MLN-resistant germplasm, including inbred lines and hybrids. “The work being done at the MLN screening facility is critical in successfully responding to the MLN epidemic in eastern Africa,” said L.M. Suresh , CIMMYT maize pathologist and manager of the MLN screening facility.

Participants also visited a seed treatment trial, where seed care treatments from Syngenta and Bayer are being evaluated for their effectiveness on a selected set of six hybrids. “Today we have not only seen excellent work on breeding for MLN resistance, but also very good research work being done on seed treatments. This is very important for seed companies,” said Maarten van Ginkel, consultant breeder, SeedCo. “From the trials we have seen today, we are assured that in the near future we will have MLN resistance introgressed in all our hybrids, enabling seed companies to improve the quality of seed delivered to the market.”

FAO has its finger on the ‘pulse’ when it comes to food security

The Food and Agriculture Organization of the United Nations (FAO) has declared 2016 the International Year of Pulses under the motto “Nutritious seeds for a sustainable future.” Pulses, an annual leguminous crop yielding from one to 12 seeds (dry beans, kidney beans, dry peas, lentils and others), have been named by the FAO as essential in the fight for food security for their nutrient value and their key role in crop rotations through the ability to fix nitrogen.

When we plant the same species on the same land every year, we are engaging in what is called monoculture. Monoculture has unfavorable consequences for production, since it increases the incidence of weeds, pests and diseases, which become resistant to control methods.

To counteract this, one of the principles of Conservation Agriculture (CA) is crop rotation, which involves planting different crops in the same field in a specific order. Crop rotation reduces the incidence of pests and diseases by interrupting their life cycles; it also maintains weed control and promotes more appropriate nutrient distribution in the soil profile (crops that have deeper roots extract nutrients at a greater depth) and helps reduce the economic risk when an unforeseen event affects one of the crops. It also enables farmers to balance residue production because crops that produce few residues can be rotated with crops that produce a large amount.

Crop rotation should include pulses (leguminous crops) that make efficient use of water and provide soil nutrients (such as nitrogen) that are extracted by grains.

The year will be a unique opportunity to foster connections all along the food chain in order to benefit more from proteins derived from pulses, increase pulse production worldwide, make better use of crop rotation and face the challenges of commercializing pulses.

New book details benefits of holistic approach to agricultural development in Mexico

foto-nota-4The creation, development and strengthening of farmers’ and technicians’ capacities are a pillar of the MasAgro strategy. For this reason, besides investing in research and technological development, SAGARPA and CIMMYT are also investing in building the capacities of agents of change to foster testing and implementation of new technologies with farmers. To this end, as part of the MasAgro Productor (Take It to the Farmer) extension strategy, in 2013, they set up a network of trainers responsible for detecting areas of opportunity for the technicians they supervise and designing a training plan to develop their technical and social skills, which will enable them to innovate together with farmers.

Thanks to this information and their efforts, a book titled Options Available for Implementing MasAgro Technologies has been published which analyzes the options available for implementing sustainable agricultural practices and technologies in 23 Mexican entities where MasAgro instructors have supported, mentored, followed up and evaluated the agents of change who have provided technical backup to farmers involved in this strategy.

This systems focus of agricultural innovation fosters interaction among different actors with the purpose of developing new technologies, better practices, new processes and new ways of organizing and managing. This in turn promotes learning and sets aside the old innovation paradigm––which considers innovation to be the result solely of scientific research and technological development––and regards innovation as a collective event for which everyone is responsible.

This option includes the hubs’[i] physical infrastructure and technological tools, agronomic management solutions and the human capital that has developed within the framework of MasAgro’s extension activities. The book also talks about various constraints and the potential for implementing the technologies promoted by MasAgro in different states of Mexico. This information is organized into five regions based on the distribution of MasAgro trainers: North (Chihuahua, Durango, San Luis Potosí and Zacatecas), Center (Estado de México, Guerrero, Hidalgo and Morelos) and West (Aguascalientes, Colima, Guanajuato, Jalisco, Michoacán and Querétaro).

This document will undoubtedly be useful to farmers, technicians, researchers, decision makers, input suppliers, development organizations, traders and other actors involved in MasAgro’s innovation network.

Consult the book at: http://conservacion.cimmyt.org/index.php/es/component/docman/doc_view/1618-libro-de-oferta-tecnologica-masagro

 

[i] A hub is an agricultural innovation node and a model of agricultural extension where farmers interact with technicians and technicians interact with researchers. These innovation nodes usually have similar agroecological conditions for establishing production systems where different technologies promoted by the MasAgro program are developed, disseminated, adapted and improved (for more information, go to http://conservacion.cimmyt.org).

With information from MasAgro

Recent publications from CIMMYT staff

The latest research from CIMMYT covers gender and agriculture in Malawi, topsoil and organic carbon variability, and reallocation of farm resources. Explore the latest publications below, and remember to stay current on new articles related to maize/wheat/conservation agriculture, CIMMYT journal articles, CIMMYT library’s acquisitions and related news at the Knowledge Center’s blog here!

  1. Agricultural innovations and food security in Malawi : gender dynamics, institutions and market implications. 2016. Mutenje, M.; Kankwamba, H.; Mangisonib, J.; Kassie, M. Technological Forecasting and Social Change 103 : 240-248.
  2. Diversity in crop residue management across an intensification gradient in southern Africa : system dynamics and crop productivity. 2016. Rusinamhodzi, L.; Corbeels, M.; Giller, K.E. Field Crops Research 185 : 79-88.
  3. Large topsoil organic carbon variability is controlled by Andisol properties and effectively assessed by VNIR spectroscopy in a coffee agroforestry system of Costa Rica. 2016. Kinoshita, R.; Roupsard, O.; Chevallier, T.; Albrecht, A.; Taugourdeau, S.; Zia Ahmed; Harold, M. van Es. Geoderma 262 : 254-265.
  4. Living within their means : Reallocation of farm resources can help smallholder farmers improve crop yields and soil fertility. 2016. Rusinamhodzi, L.; Dahlin, S.; Corbeels, M. Agriculture, Ecosystems and Environment  216 :125-136.
  5. Reduced tillage and nitrogen effects on soil water dynamics and maize (Zea mays L.) yield under semi-arid conditions. 2016. Mupangwa, W.; Twomlow, S.; Walker, S. International Journal of Agricultural Sustainability 14 (1) : 13-30.

Will we feed humanity by 2050?

Bram Govaerts, Leader of CIMMYT's program on Sustainable Intensification in Latin America, speaks at the Oxford Farming Conference. Photo: CIMMYT
Bram Govaerts, Leader of CIMMYT’s program on Sustainable Intensification in Latin America, speaks at the Oxford Farming Conference. Photo: CIMMYT

“Imagine a sports car designed to travel at high speed on paved highways, running on a gravel road. It’s going to break down, isn’t it? The same thing happens when agricultural technologies are applied without using smart agronomy to increase input use efficiency, protect the environment and ensure sustainability,” said Bram Govaerts, Leader of CIMMYT’s program on Sustainable Intensification in Latin America.

Govaerts presented at a keynote speech titled “Ending hunger: Can we achieve humanity’s elusive goal by 2050?” at the Oxford Farming Conference (OFC) of the University of Oxford, Oxford, United Kingdom, on 5-7 January. The conference has been held in Oxford for more than 70 years with the aim of contributing to the improvement and welfare of British agriculture. Farmers, researchers, politicians and economists from across the world attend the event. This year, the main theme was “Daring Agriculture,” including such subjects as global agriculture, innovation, sustainable intensification, technology and agribusiness.

As evidenced during the event, there are many challenges in agriculture. We need to produce more food with fewer resources and less environmental impact while reducing world hunger and poverty. In his speech, Govaerts highlighted the main challenges to achieving food security for a world population that is projected to reach nearly ten billion by 2050. These challenges include the growing demand for food, demographic changes and the impacts on agriculture of weather events such as El Niño. Govaerts also mentioned CIMMYT’s efforts aimed at fighting world hunger and how initiatives such as MasAgro are taking science to the farm.

“It was very exciting to talk about the sustainable strategies we’re working on with farmers, technicians, scientists, institutions and partners to be able to produce more with fewer resources and, especially, to produce intelligently by adapting technologies to the needs of farmers, by developing machine prototypes and by using appropriate varieties and post-harvest practices,” said Govaerts.

To see the presentation, click here.

How to work with agricultural innovation systems

Participants of the “Designing projects focusing on agricultural innovation systems” workshop. Photo: CIMMYT

Agricultural innovation systems (AIS) are networks that contribute to creating, disseminating and using scientific and technological knowledge, as well as coordinating and supporting technological processes. However, the way in which farm projects are designed and research processes are organized has hindered the implementation of these systems. In order to establish guidelines for designing these type of initiatives, the CGIAR Research Program on MAIZE and the Royal Tropical Institute (KIT) of the Netherlands organized a workshop called “Designing projects focusing on agricultural innovation systems” in Wageningen, the Netherlands, on 11-13 December 2015.

Representatives of the CGIAR, Sustainable Intensification of Maize and Legume Systems for Food Security in Eastern and Southern Africa (SIMLESA), Cereal Systems Initiative for South Asia (CSISA), Intensification of Maize-Legume Systems in the Eastern Province of Zambia (SIMLEZA) and CIMMYT’s MasAgro and Buena Milpa projects attended the workshop in order to exchange knowledge on lessons learned from their own experiences implementing AIS.

One of the main activities of the workshop included defining AIS as having a holistic and integrated focus that includes technology, innovation and methodology. Workshop participants indicated that based on the lessons they had learned, each farmer has unique needs and it’s essential to integrate technologies at the farm level.

Another subject discussed at the workshop was the scaling out of knowledge to other locations and at different system levels. Scaling out depends on establishing strong and complementary partnerships, on the interaction of the actors in the system and on organizational and institutional change. In agricultural research, it is important to get out of the lab and into the field to understand the social drivers behind technology uptake, recognize diversities of needs and understand the reasons behind the adoption – or failure to adopt – certain technologies. Participants completed the workshop with an understanding of the complex, multidimensional aspects of AIS.

Learning partnerships turn research into results for Mexican agriculture

“CIMMYT is famous for helping farmers all over the world, but what fewer people know is that they also help Mexican researchers and students who will become the next generation of researchers through the courses and workshops they offer,” said Alejandro Ledesma, maize researcher at Mexico’s National Forestry, Agricultural and Livestock Research Institute (INIFAP). Above, Ledesma (L), receives certificate from CIMMYT Director General Martin Kropff, Juan Burgueño Ferreira, Head of CIMMYT’s Biometrics and Statistics Unit, and Kevin Pixley, Head of the Genetic Resources Program at a course on statistical analysis of genetic and phenotypic data for breeders held at CIMMYT. Photo: CIMMYT

The Seeds of Discovery (SeeD) project seeks to empower the next generation of Mexican scientists to use maize and wheat biodiversity to effectively meet the needs of Mexican agriculture in the future. By providing professional agricultural research and development opportunities for current and future maize and wheat scientists, SeeD works to ensure that the materials they develop will reach those who need it most. For this reason, SeeD is developing a platform of publicly available data and software tools that enable the efficient use of maize and wheat genetic resources. These genetic resources, or biodiversity, include more than 28,000 maize and 140,000 wheat samples, known as accessions, that are conserved in CIMMYT’s seed bank and available to researchers worldwide.

Genetic resources are the raw materials or building blocks used to develop new maize and wheat varieties needed to meet the demands of a growing population in a changing climate. Many of these maize and wheat accessions contain positive traits such as drought tolerance or disease resistance, which if bred into new varieties  have the potential to improve food security and livelihoods in countries such as Mexico in the global south.

However, the specific potential impact of SeeD on Mexican agriculture and society will only be realized if breeders and scientists effectively use the products resulting from the project. By inviting researchers, professors and students to participate in workshops, training courses and diverse research projects, a growing cadre of scientists is learning how to use the databases and software tools developed by SeeD and validating their utility.

Cynthia Ortiz places DNA samples into a thermal cycler in the CIMMYT Biosciences laboratory. Photo: Jennifer Johnson

“Sharing the knowledge generated by SeeD and making it available to the scientific community will help accelerate the development of new varieties that will benefit long-term food security in Mexico and the world,” said Cynthia Ortiz, a graduate student in biotechnology at the Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) in Mexico City.

Ortiz is conducting research for her Master of Science thesis mentored by SeeD scientist Sukhwinder Singh, who is helping her map the quantitative trait loci (QTL) for phenological and grain yield-related traits in wheat varieties created by crossing synthetic wheat varieties with elite lines. She has participated in two SeeD workshops focusing on wheat phenotyping for heat, drought and yield as well as on the use of the maize and wheat molecular atlas, where she learned to use SeeD software such as Flapjack and CurlyWhirly to visualize the results of genetic diversity analyses.

“The materials SeeD has developed have opened the door for identifying genetic resources with positive traits such as heat and drought tolerance, or resistance to pests and diseases that affect crops all over the world,” Ortiz said. “And the best part is that at the same time, they have sought to protect the genetic diversity of these crops, using the native biodiversity we have in Mexico and the world to confront the challenge of ensuring food security.”

David Gonzalez, a recent graduate of the Chapingo Autonomous University in Texcoco, a city about 30 km (20 miles) from Mexico City, agrees. He worked with SeeD scientists Sarah Hearne and Terence Molnar on his Master of Science thesis, identifying genetic resources with resistance to the maize leaf disease “tar spot complex” (TSC) by using genome-wide association study (GWAS) and genomic selection.

David Gonzalez (L) scores maize plants for signs of tar spot disease alongside SeeD scientist Terence Molnar (R) in the state of Chiapas, Mexico. Photo: Jennifer Johnson

“The software and databases SeeD develops for analyzing genotypic and phenotypic data are novel tools that can be used for research as well as academic purposes,” Gonzalez said. “They are a valuable resource that can be utilized by academic institutions to train students in genetic analysis.”

Gonzalez attended the CIMMYT training course “Technologies for Tropical Maize Improvement,” where he learned about new tools for field trial design, data analysis, doubled haploid technology, molecular markers, GWAS and genomic selection.

“This training, as well as the valuable help and support from CIMMYT scientists, really helped me develop myself professionally,” he said. “It was exciting to work with such an ambitious project, doing things that have never been done before to discover and utilize maize and wheat genetic diversity for the benefit of farmers. I look forward to using what I’ve learned in my future career to develop varieties that meet the needs of farmers in Latin America.”

SeeD is a joint initiative of CIMMYT and the Mexican Ministry of Agriculture (SAGARPA) through the MasAgro project. SeeD receives additional funding from the CGIAR Research Programs on Maize (MAIZE CRP) and Wheat (WHEAT CRP), and from the UK’s Biotechnology and Biological Sciences Research Council (BBSRC).

Learning partnerships turn research into results for Mexican agriculture

“CIMMYT is famous for helping farmers all over the world, but what fewer people know is that they also help Mexican researchers and students who will become the next generation of researchers through the courses and workshops they offer,” said Alejandro Ledesma, maize researcher at Mexico’s National Forestry, Agricultural and Livestock Research Institute (INIFAP). Above, Ledesma (L), receives certificate from CIMMYT Director General Martin Kropff, Juan Burgueño Ferreira, Head of CIMMYT’s Biometrics and Statistics Unit, and Kevin Pixley, Head of the Genetic Resources Program, at a course on statistical analysis of genetic and phenotypic data for breeders held at CIMMYT. Photo: CIMMYT
“CIMMYT is famous for helping farmers all over the world, but what fewer people know is that they also help Mexican researchers and students who will become the next generation of researchers through the courses and workshops they offer,” said Alejandro Ledesma, maize researcher at Mexico’s National Forestry, Agricultural and Livestock Research Institute (INIFAP). Above, Ledesma (L), receives certificate from CIMMYT Director General Martin Kropff, Juan Burgueño Ferreira, Head of CIMMYT’s Biometrics and Statistics Unit, and Kevin Pixley, Head of the Genetic Resources Program, at a course on statistical analysis of genetic and phenotypic data for breeders held at CIMMYT. Photo: CIMMYT

The Seeds of Discovery (SeeD) project seeks to empower the next generation of Mexican scientists to use maize and wheat biodiversity to effectively meet the needs of Mexican agriculture in the future. By providing professional agricultural research and development opportunities for current and future maize and wheat scientists, SeeD works to ensure that the materials they develop will reach those who need them most. For this reason, SeeD is developing a platform of publicly available data and software tools that enable the efficient use of maize and wheat genetic resources. These genetic resources, or biodiversity, include more than 28,000 maize and 140,000 wheat samples, known as accessions, that are conserved in CIMMYT’s seed bank and available to researchers worldwide.

Genetic resources are the raw materials or building blocks used to develop new maize and wheat varieties needed to meet the demands of a growing population in a changing climate. Many of these maize and wheat accessions contain positive traits such as drought tolerance or disease resistance, which, if bred into new varieties, have the potential to improve food security and livelihoods in countries such as Mexico in the global south.

However, the specific potential impact of SeeD on Mexican agriculture and society will only be realized if breeders and scientists effectively use the products resulting from the project. By inviting researchers, professors and students to participate in workshops, training courses and diverse research projects, a growing cadre of scientists is learning how to use the databases and software tools developed by SeeD and validating their utility.

Cynthia Ortiz places DNA samples into a thermal cycler in the CIMMYT Biosciences laboratory. Photo: CIMMYT/J. Johnson

“Sharing the knowledge generated by SeeD and making it available to the scientific community will help accelerate the development of new varieties that will benefit long-term food security in Mexico and the world,” said Cynthia Ortiz, a graduate student in biotechnology at the Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV) in Mexico City.

Ortiz is conducting research for her Master of Science thesis mentored by SeeD scientist Sukhwinder Singh, who is helping her map the quantitative trait loci (QTL) for phenological and grain yield-related traits in wheat varieties created by crossing synthetic wheat varieties with elite lines. She has participated in two SeeD workshops focusing on wheat phenotyping for heat, drought and yield as well as on the use of the maize and wheat molecular atlas, where she learned to use SeeD software such as Flapjack and CurlyWhirly to visualize the results of genetic diversity analyses.

“The materials SeeD has developed have opened the door for identifying genetic resources with positive traits such as heat and drought tolerance, or resistance to pests and diseases that affect crops all over the world,” Ortiz said. “And the best part is that at the same time, they have sought to protect the genetic diversity of these crops, using the native biodiversity we have in Mexico and the world to confront the challenge of ensuring food security.”

David Gonzalez, a recent graduate of the Chapingo Autonomous University in Texcoco, a city about 30 km (20 miles) from Mexico City, agrees. He worked with SeeD scientists Sarah Hearne and Terence Molnar on his Master of Science thesis research, identifying genetic resources with resistance to the maize leaf disease “tar spot complex” (TSC) by using genome-wide association study (GWAS) and genomic selection.

David Gonzalez (L) scores maize plants for signs of tar spot disease alongside SeeD scientist Terence Molnar (R) in the state of Chiapas, Mexico. Photo: CIMMYT/J. Johnson

“The software and databases SeeD develops for analyzing genotypic and phenotypic data are novel tools that can be used for research as well as academic purposes,” Gonzalez said. “They are a valuable resource that can be utilized by academic institutions to train students in genetic analysis.”

Gonzalez attended the CIMMYT training course “Technologies for Tropical Maize Improvement,” where he learned about new tools for field trial design, data analysis, doubled haploid technology, molecular markers, GWAS and genomic selection.

“This training, as well as the valuable help and support from CIMMYT scientists, really helped me develop myself professionally,” he said. “It was exciting to work with such an ambitious project, doing things that have never been done before to discover and utilize maize and wheat genetic diversity for the benefit of farmers. I look forward to using what I’ve learned in my future career to develop varieties that meet the needs of farmers in Latin America.”

SeeD is a joint initiative of CIMMYT and the Mexican Ministry of Agriculture (SAGARPA) through the MasAgro project. SeeD receives additional funding from the CGIAR Research Programs on Maize (MAIZE CRP) and Wheat (WHEAT CRP), and from the UK’s Biotechnology and Biological Sciences Research Council (BBSRC).

10 new studies from CIMMYT staff

11 January, 2016

The latest studies produced by CIMMYT’s scientists and researchers include new findings on resilient wheat and maize, conservation agriculture, recently discovered trade-offs for farmers and more. One study led by ETH Zürich graduate Stephanie Cheesman, along with CIMMYT senior agronomist Christian Thierfelder, Neal S. Eash from the University of Tennessee, Girma Tesfahun Kassie, ICARDA, and Emmanuel Frossard, professor at ETH Zürich, found limited increase in carbon sequestration under conservation agriculture (CA) after up to seven years of practice. Read the study “Soil carbon stocks in conservation agriculture systems of Southern Africa” here and learn about the rest of our recent publications below.

 

  1. Comparison of Economically Important Loci in Landraces and Improved Wheat Cultivars from Pakistan. 2016. Rasheed, A.; Xianchun Xia; Mahmood, T.; Quraishi, U.M.; Aziz, A.; Bux, H.; Mahmood, Z.; Mirza, J.I.; Mujeeb-Kazi, A.; He Zhonghu. Crop Science 56 : 1-15.
  2. Conservation agriculture affects arthropod community composition in a rainfed maize–wheat system in central Mexico. 2016. Rivers, A.; Barbercheck, M;. Govaerts, B.; Verhulst, N. Applied Soil Ecology 100 : 81-90.
  3. Field-scale modeling of tree–crop interactions : Challenges and development needs. 2016. Luedeling, E.; Smethurst, P.J.; Baudron, F.; Bayala, J.; Huth, N.I.; Meine van Noordwijk; Ong, C.K.; Mulia, R.; Lusiana, B.; Muthuri, C.; Sinclair, F.L. Agricultural Systems 142 : 51-69.
  4. Herbicide options for effective weed management in dry directseeded rice under scented rice-wheat rotation of western Indo- Gangetic Plains. 2016. Singh, V.; Jat, M.L.; Ganie, Z.A.; Chauhan, B.S.; Gupta, R.K. Crop Protection 841 : 168–176.
  5. Improving maize grain yield under drought stress and non-stress environments in Sub-Saharan Africa using marker-assisted recurrent selection. 2016. Beyene, Y.; Fentaye Kassa Semagn; Crossa, J.; Mugo, S.N.; Atlin, G.N.; Amsal Tesfaye Tarekegne; Meisel, B.; Sehabiague, P.; Vivek, B.; Oikeh, S.O.; Alvarado, G.; Machida, L.; Olsen, M.; Prasanna, B.M.; Banziger, M. Crop Science 56 (1) : 344-353.
  6. Initiating maize pre-breeding programs using genomic selection to harness polygenic variation from landrace populations. 2016. Gorjanc, G.; Jenko, J.; Hearne, S.; Hickey, J.M. BMC Genomics 17 : 30.
  7. Productivity, profitability, and energetics : a multi-criteria assessmentof farmers’ tillage and crop establishment options for maize inintensively cultivated environments of South Asia. 2016. Gathala, M.K.; Timsina, J.; Islam, S.; Krupnik, T.J.; Bose, T.R.; Islam, N.; Rahman, M.; Hossain, I.; Harun-Ar-Rashid; Ghosh, A.K.; Mustafa Kamrul Hasan; Khayer, A.; Islam, Z.; Tiwari, T.P.; McDonald, A. Field Crops Research 186 : 32-46.
  8. Progress in stacking aflatoxin and fumonisin contamination resistance genes in maize hybrids. 2016. Chiuraise, N.; Derera, J.; Yobo, K.S.; Magorokosho, C.; Nunkumar, A.; Qwabe, N.F.P. Euphytica 207 (1) : 49-67.
  9. Soil carbon stocks in conservation agriculture systems of Southern Africa. 2016. Cheesman, S.; Thierfelder, C.; Eash, N.S.; Kassie, G.T.; Frossard, E. Soil and Tillage Research 156 : 99-109.
  10. Weed emergence as affected by maize (Zea mays L.)-cover crop rotations in contrasting arable soils of Zimbabwe under conservation agriculture. 2016. Mhlanga, B.; Cheesman, S.; Chauhan, B.S.; Thierfelder, C. Crop Protection 81 : 47-56.

Stay current on new articles related to maize/wheat/conservation agriculture, CIMMYT journal articles, CIMMYT library’s acquisitions and related news at the Knowledge Center’s blog here!

Rebuilding livelihoods: CIMMYT helps Nepalese farmers recover from earthquake

A farmer uses a mini-tiller in the midwestern region of Nepal. Photo credit: CIMMYT/CSISA

The recent 7.6 magnitude earthquake that struck Nepal on 25 April, followed by a 7.3 magnitude aftershock on 12 May and several hundred additional aftershocks, has had huge negative impacts on the country’s agriculture and food security. Around two-thirds of Nepal’s population rely on agriculture for their livelihoods, and agriculture contributes 33% of Nepal’s GDP. It is estimated that about 8 million people have been affected by the earthquakes, with smallholders in hilly regions being the hardest hit.

The earthquakes damaged or destroyed agricultural assets, undermining the longer-term food production capacity of farm families and disrupting critical input supply, trade, and processing networks. Farmers lost grain and seed stocks, livestock, agricultural tools and other inputs, and are facing significant labor shortages. Widespread damage to seed and grain storage facilities has affected smallholder farmers’ ability to secure their harvested crops during the rainy season.

In response to the devastation, USAID-Nepal has provided US$1 million to the CIMMYT-led Cereal Systems Initiative for South Asia in Nepal (CSISA-NP) for earthquake relief and recovery. The Earthquake Recovery Support Program will be implemented for a period of 13 months in close coordination with the Ministry of Agricultural Development (MoAD), Department of Agriculture, Department of Livestock Services, Nepal Agricultural Research Council, and District Disaster Relief Committee. The districts that will receive support include Dolkha, Kavre, Khotang, Makwanpur, Nuwakot, Ramechap, Sindhupalchowk, and Solukhumbu, which suffered particularly high levels of damage.

According to Andrew McDonald, CIMMYT Principal Scientist and CSISA Project Leader, “Even if seed is available, farmers’ ability to plant and harvest crops has been severely diminished due to the loss of draft animals and the exacerbation of labor shortages.” To aid them, the earthquake recovery program will provide more than 33,000 farming households with 50,000 grain storage bags, 30 cocoons for community grain storage, 400 mini-tillers and other modern agriculture power tools (e.g., seeders, reapers, and maize shellers), 800 sets of small agricultural hand tools, and 20,000 posters on better-bet agronomic practices for rice and maize.

“First we will focus on getting horse-powered mini-tillers into affected communities, and subsequently broadening the utility of these machines to power a host of essential agricultural activities including seeding, reaping, threshing, and shelling, as well as driving small pumps for irrigation,” said Scott Justice, Agricultural Mechanization Specialist, CSISA-NP.

CIMMYT scientists train farmers on how to use a power tiller in Dadeldhura, Nepal.
Photo credit: Lokendra Khadka/CSISA-Nepal

At the program’s inception workshop on 28 August, Beth Dunford, USAID-Nepal Mission Director, remarked that USAID-Nepal has arranged for a special fund to help earthquake-affected people. Beyond the devastation of houses and public infrastructure such as roads, the earthquake has seriously disrupted agriculture and the rural economy in the impacted districts. Re-establishing vital agricultural markets and services is key to how quickly these communities will recover from the earthquake, underlined Dunford.

To coordinate and monitor program activities effectively, management committees at the central, district, and local levels have been formed with the purpose of identifying the earthquake-affected areas within a district and ensuring efficient and transparent distribution of aid items.

MoAD Joint Secretary Rajendra Adhikari highlighted that the Ministry feels a real sense of ownership over this program and is committed to implementing program activities through its network. The farm machinery support program will be a perfect platform for MoAD to expand its farm mechanization program into other areas of the country. The Earthquake Recovery Support Program also aligns with the Nepalese Government’s agricultural development strategies, which focus on community-wide inclusive development.

Inaugural Paula Kantor Award recognizes work on agriculture, gender, improved diets

gupta_

El BATAN, Mexico (CIMMYT) – Post-doctoral fellow Soumya Gupta is the winner of the inaugural Paula Kantor Award for Excellence in Field Research, the International Center for Research on Women (ICRW) announced on Thursday.

Gupta was recognized for research that “systematically and empirically assesses the empowerment of women in India as it relates to agricultural determinants and nutritional outcomes,” the group said in a statement.

The ICRW praised Gupta’s doctoral research at Cornell University for revealing that when women are empowered, they are better positioned to make their own choices in agriculture and help influence their own nutritional outcomes.

Gupta’s research showed that while diversification of production systems and diets is an important pathway to improved nutrition, the outcome is conditional on women’s status, the statement said.

Gupta found that empowered women tend to have better access to diet diversity and improved iron status.

“I could not imagine a more deserving researcher upon which to bestow the honor of the inaugural Paula Kantor Award,” said ICRW President Sarah Degnan Kambou. “Dr. Gupta’s work truly embodies the spirit and passion that Paula brought to her work every day. I see so many parallels between the important work that Paula was doing to better integrate gender into agriculture and rural development and Dr. Gupta’s field research.”

This is the first year that ICRW bestowed the award, which was designed to honor the legacy of the group’s former colleague Paula Kantor who died at age 46 in the aftermath of a Taliban attack in Pakistan last year.

At the time of her death, the prolific gender and development specialist was working at the Mexico-based International Maize and Wheat Improvement Center (CIMMYT) on a project focused on understanding the role of gender in the livelihoods of people in major wheat-growing areas of Afghanistan, Ethiopia and Pakistan.

Kantor was widely recognized in the international development community as an established and respected professional and writer, who pushed the realms of gender research to engage men more effectively. She published more than a dozen peer-reviewed academic publications, 10 peer-reviewed monographs and briefs, 15 other publications and 10 conference papers during her lifetime.

“I am honored to be the first recipient of the Paula Kantor Award,” Gupta said. “There is a great need for better data (and metrics) in the field of agriculture, nutrition and women’s empowerment. In light of that, the Paula Kantor Award acknowledges the importance of gathering primary data for evidence-based research.”

“At the same time the award also recognizes the tremendous effort that goes into designing a field-based data collection activity that is methodologically robust, contextually relevant, and ethically sound,” she said.

“I am inspired by Paula’s work and life, and with this award look forward to continuing my research on the linkages between nutrition and agriculture with a focus on women’s empowerment, and contributing to policy reform in a meaningful way.”

Gupta will receive the award at ICRW’s 40th Anniversary celebration in New Delhi, India on January 20th.

Gupta will receive a commemorative plaque  and the opportunity to meet with organizations, government officials, leaders of non-governmental organizations, and others in Delhi to discuss her work and the importance of understanding the connections between women’s empowerment, agricultural practices and nutritional outcomes.

Can maize help farmers in Odisha, India, cope with climate change?

Maize is a stable crop that requires less water, has lower input costs and earns farmers greater profit thanks to its growing demand as food and feed for livestock. Tribal farmers in Odisha are increasing maize yields with the use of new technologies and improved agronomic practices. Photo: Ashwamegh Banerjee/CIMMYT

Badbil is a remote and deeply impoverished tribal village in the plateau region of Mayurbhanj in the east Indian state of Odisha. The village is home to 200 families belonging to four indigenous tribes who have traditionally grown a local rice called Sathia.

Due to regularly occurring droughts and declining rainfall, families have started giving up rice cultivation. The rice crop’s high demand for water has resulted in about a 40% decline in total rice production in India’s eastern states during severe droughts, with an estimated loss of US$ 800 million. As a result, Mayurbhanj’s plateau area is now considered unsuitable for growing rice and remains fallow for most of the year.

“Farmers also face the problem of nutrient-depleted lateritic and acidic soils, which are dominant in these areas and commonly dismissed as degraded and unproductive by the local population,” said R.K. Malik, CIMMYT Senior Agronomist.

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Thirty years of supporting maize farmers in southern Africa

Over 100,000 packets of nearly 1,200 hybrids and varieties developed by CIMMYT-Zimbabwe and partners were distributed to national agricultural research systems and private seed companies throughout eastern and southern Africa. Regional trial requests are in high demand from emerging seed companies across the region as well as Egypt, Nigeria, Pakistan and other countries in Asia and Latin America. Photo: Amsal Tarekegne/CIMMYT.

The year 2015 marked 30 years of CIMMYT’s Southern Africa Regional Office (CIMMYT-SARO) developing new maize varieties adapted to smallholder farmer needs in Zimbabwe and across sub-Saharan Africa.

“Multiple stress tolerant and nutritious maize hybrids developed by CIMMYT-SARO have been released by partners throughout eastern and southern Africa,” said Amsal Tarekegne, CIMMYT-SARO Senior Maize Breeder.

CIMMYT-SARO and partners have also produced new maize varieties that yield 20-30% more than currently available widely grown commercial varieties under drought and low nitrogen stress conditions.

Farmers in eastern and southern Africa need maize varieties that are climate resilient, high-yielding and nutritious.

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Mobilizing gene bank biodiversity in the fight against climate change

Ancestors of modern wheat (R) in comparison with an ear of modern cultivated wheat (L). Photo: Thomas Lumpkin/CIMMYT.

In a world where the population is expected to reach 9 billion by the year 2050, grain production must increase to meet rising demand. This is especially true for bread wheat, which provides one-fifth of the total calories consumed by the world’s population. However, climate change threatens to derail global food security, as instances of extreme weather events and high temperatures reduce agricultural productivity and are increasing faster than agriculture can naturally adapt, leaving our future ability to feed the global population uncertain. How can we ensure crop production and food security for generations to come?

In order to continue feeding the planet, it is imperative that we identify crop varieties that display adaptive and quality traits such as drought and heat stress tolerance that will allow them to survive and flourish despite environmental stresses. For this reason, a recent study by Sehgal et al., “Exploring and mobilizing the gene bank biodiversity for wheat improvement,” was conducted to characterize wheat seed samples in the CIMMYT germplasm bank to identify useful variations for use in wheat breeding.

The study analyzed the genetic diversity of 1,423 bread wheat seed samples that represent major wheat production environments around the world, particularly regions that experience significant heat and drought. The tested samples included synthetic wheat varieties, which are novel bread wheat varieties created by making crosses between the progenitors of modern bread wheat, durum wheat and wild grassy ancestors; landraces, which are local varieties developed through centuries of farmer selection; and elite lines that have been selectively bred and adapted. The samples were analyzed through genotyping-by-sequencing, a rapid and cost-effective approach that allows for an in-depth, reliable estimate of genetic diversity.

The results of the study suggested that many of the tested landraces and synthetics have untapped, useful genetic variation that could be used to improve modern wheat varieties. When combined with elite wheat germplasm, this genetic variation will increase stress adaptation and quality traits as well as heat and drought tolerance, thus leading to new wheat varieties that can better survive under climate change. The study also found new genetic variation for vernalization, in which flowering is induced by exposure to cold, and for glutenin, a major wheat protein responsible for dough strength and elasticity. Based on the information generated by the study, over 200 of the diverse seed samples tested have been selected for use in breeding, since they contain new specific forms of genes conferring drought and heat stress tolerance. This new genetic diversity will help bread wheat breeding programs around the world create new varieties to feed the world’s growing population in a changing environment.

This research is part of CIMMYT’s ongoing Seeds of Discovery (SeeD) project, which is funded by the Mexican Ministry of Agriculture, Livestock, Rural Development, Fisheries and Food (SAGARPA) through the Sustainable Modernization of Traditional Agriculture (MasAgro) project, as well as the CGIAR Research Program on Wheat (WHEAT). SeeD works to unlock the genetic potential of maize and wheat genetic resources by providing breeders with a toolkit that enables their more targeted use in the development of better varieties that address future challenges, including those from climate change and a growing population.

To read the full study, please click here:

Citation:

Sehgal D, Vikram P, Sansaloni CP, Ortiz C, Pierre CS, Payne T, et al. (2015) Exploring and Mobilizing the Gene Bank Biodiversity for Wheat Improvement. PLoS ONE 10(7): e0132112. doi:10.1371/journal.pone.0132112

Related Publications:

Exploiting genetic diversity from landraces in wheat breeding for adaptation to climate change (2015) Lopes, M.S., El-Basyoni, I., Baenziger, P.S., Sukhwinder-Singh, Royo, C., Ozbek, K., Aktas, H., Ozer, E., Ozdemir, F., Manickavelu, A., Ban, T., Vikram, P.

Coping with climate change: the roles of genetic resources for food and agriculture, Food and Agriculture Organization of the United Nations (FAO)

Climate change’s surprising opportunity for East African maize farmers

By 2050, seasonal temperatures are expected to increase over 2°C in all maize producing regions of eastern Africa. Africa is one of the most vulnerable continents in the world to rising temperatures and rainfall variability due to climate change, with 96% of Sub-Saharan African (SSA) farmers depending on rainfall to water their crops.

While climate change is expected to decrease maize yields in most parts of Africa by a margin of 6-12%, some countries like Ethiopia and Kenya may see overall maize yields increase under climate change, according to CIMMYT climate and crop models.

“Our results suggest that the likely maize yield increase in Ethiopia and Kenya is due to anticipated temperature increases in the highland regions,” says Jill Cairns, maize physiologist at CIMMYT. Current temperatures in this area are too low to produce good yields, so an increase in temperature could positively affect maize farmers’ harvests in the future.

“New maize varieties will be needed to capitalize on these potential yield gains in the highlands,” adds Cairns. Commercial maize varieties currently grown in the East African highlands will not tolerate future higher temperatures. Varieties that are adapted to the region’s future climate coupled with recommended agronomic practices and correct timing for planting will be necessary to increase farmers’ yields.

Maize production overall has been declining in Kenya since 1982, due largely to drought conditions experienced across Africa and lack of varieties that can withstand this stress. CIMMYT estimates that 40% of Africa’s maize growing areas face occasional drought stress, resulting in yield losses of 10-25%. As a result of these climate shocks, Africa yields just two tons per hectare of maize, compared to the world’s average of nearly five tons per hectare.

CIMMYT is currently developing climate and crop models to predict the impact of future climate on maize production, and has also established the world’s largest tropical maize stress screening network under public domain. This network is being used by partners, including national agricultural organizations in SSA, to develop improved varieties that will tolerate current and future climate challenges. Currently being addressed are drought, heat, low soil fertility, insect pests and diseases such as maize lethal necrosis (MLN).

Improved maize hybrids with drought tolerance and nitrogen use efficiency are already on the market across eastern Africa and in the larger SSA region. Significant efforts have been made in recent years to develop heat tolerant and MLN resistant maize varieties in Ethiopia, Kenya, Tanzania and Uganda. These improved varieties yield much more than current commercial varieties and most have stress tolerant traits that help farmers tackle multiple abiotic and biotic stresses.

CIMMYT, with the support of its partners, has developed 57 improved drought tolerant (DT) maize varieties for eastern Africa’s market, each with farmer-favored traits. Over 12 million people have benefited from DT maize varieties across Ethiopia, Kenya, Tanzania and Uganda. Through public and private seed companies, nearly 17,300 tons of certified DT maize seeds have been produced.

“With this work on climate resilient maize, we are playing an important part in making Africa a food-secure continent,” says Stephen Mugo, CIMMYT’s Regional Representative for Africa.