16th Acid Soil Wheat Screening Nursery

Thomas Payne (2020, [Dataset])

The Acid-Soils Wheat Screening Nursery (ASWSN) contains spring bread wheat germplasm adapted to areas affected by low pH that are predominately in Brazil, the highlands of central Africa, and the Himalayas; the total estimated area is close to 2 million hectares. Disease and stress problems are similar to ME2. However, aluminum and manganese toxicities, plus phosphorus deficiency, are major constraints to production. Red grain is generally preferred, except in the Himalayas. High-level quality is demanded, especially in Latin America.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

10th Harvest Plus Advanced Nursery

Thomas Payne (2020, [Dataset])

The Harvest Plus Advanced Nursery (HPAN) contains spring bread wheat (Triticum aestivum) germplasm adapted to ME1 (Optimally Irrigated, low rainfall environment) and ME5 (Warmer area environment) environments. It has 100-200 entries with a single replication, white grain color and distributed to more than 35 locations.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

12th Semi-Arid Wheat Yield Trial

Thomas Payne (2019, [Dataset])

The Semi-Arid Wheat Yield Trial (SAWYT) is a replicated yield trial that contains spring bread wheat (Triticum aestivum) germplasm adapted to low rainfall, drought prone environments typically receiving less than 500 mm of water available during the cropping cycle. The combination of water-use efficiency and water responsive broad adaptation plus yield potential is important in drought environments where rainfall is frequently erratic across and within years. Stripe rust, leaf rust and stem rust, root rots, nematodes, and bunts are the key biotic constraints. Typical target environments include winter rain or Mediterranean-type drought associated with post-flowering moisture stress and heat stress such as those found at Aleppo (Syria), Settat (Morocco) and Marcos Juarez (Argentina), all classified by CIMMYT within Wheat Mega Environment 4 (Low rainfall, semi-arid environment; ME4: SA). It is distributed to 150 locations, and contains 50 entries.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

11th Semi-Arid Wheat Yield Trial

Thomas Payne (2019, [Dataset])

The Semi-Arid Wheat Yield Trial (SAWYT) is a replicated yield trial that contains spring bread wheat (Triticum aestivum) germplasm adapted to low rainfall, drought prone environments typically receiving less than 500 mm of water available during the cropping cycle. The combination of water-use efficiency and water responsive broad adaptation plus yield potential is important in drought environments where rainfall is frequently erratic across and within years. Stripe rust, leaf rust and stem rust, root rots, nematodes, and bunts are the key biotic constraints. Typical target environments include winter rain or Mediterranean-type drought associated with post-flowering moisture stress and heat stress such as those found at Aleppo (Syria), Settat (Morocco) and Marcos Juarez (Argentina), all classified by CIMMYT within Wheat Mega Environment 4 (Low rainfall, semi-arid environment; ME4: SA). It is distributed to 150 locations, and contains 50 entries.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Fifty years of semi-dwarf spring wheat breeding at CIMMYT: Grain yield progress in optimum, drought and heat stress environments

Suchismita Mondal Somak Dutta Leonardo Abdiel Crespo Herrera JULIO HUERTA_ESPINO Hans-Joachim Braun Ravi Singh (2019, [Dataset])

This dataset provides supplementary files related to fifty years of semi-dwarf spring wheat breeding at CIMMYT: Grain yield progress in optimum, drought and heat stress environments.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Enhancing smallholder access to agricultural machinery services: Lessons from Bangladesh

Khondoker Mottaleb (2019, [Dataset])

Resource poor smallholders in developing countries often lack access to capital goods such as farm machinery. Enabling adequate access through machinery services can thereby significantly contribute to food security and farm incomes. At the core of the service provision model is the lead farmer, who makes the initial investment in agricultural machinery, and provides services to others on a fee-for-service basis. Profiling the lead farmers can thereby provide important lessons and scaling implications. The present paper provides a case study of Bangladesh, using primary data to characterize the lead farmers. General education, credit availability and risk taking attitude play significant roles in whether or not a farm household will be a lead farmer in Bangladesh.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Projecting food demand of Nepal: Implications for policy

Khondoker Mottaleb Dil Bahadur Rahut Gideon Kruseman Olaf Erenstein (2019, [Dataset])

This study projected the consumption demand of a few major food items of Nepal. On average, 62% of the total daily dietary energy of a Nepalese comes solely from cereals. As the economy of Nepal is rapidly emerging, and given that 25% of the total population of Nepal is still poor, this study projects the aggregate consumption demand for rice, wheat, maize and other cereals, pulses, vegetables, and fish and meat in Nepal by 2025 and 2030. Findings indicate that the consumption demand of the sampled commodities would increase with the GDP and population growth of the country. For example, by 2030, the demand for wheat, maize, and rice will increase by 63%, 46%, and 8%, respectively, from the consumption level in 2018/19. This study also demonstrates that the consumption demand for noncereal food items such as pulses, vegetables, meat and fish would also increase by 2030. Based on the findings, this study strongly suggests policymakers to invest both in cereal and noncereal subsectors of agriculture in Nepal to enhance the domestic production capacity. Investment in agricultural capacity enhancement can also reduce extreme poverty in Nepal, as more than 66% of the employed labor force in Nepal is currently engaged in agriculture.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

36th International Bread Wheat Screening Nursery

Ravi Singh Thomas Payne (2019, [Dataset])

The International Bread Wheat Screening Nursery (IBWSN) is designed to rapidly assess a large number of advanced generation (F3-F7) lines of spring bread wheat under Mega-environment 1 (ME1) which represents diversity for a wide range of latitudes, climates, daylengths, fertility conditions, water management, and (most importantly) disease conditions. The distribution of these nurseries is deliberately biased toward the major spring wheat regions of the world where the diseases of wheat are of high incidence. It is distributed to 180 locations and contains 300-450 entries.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

36th Semi-Arid Wheat Screening Nursery

Thomas Payne Ravi Singh (2019, [Dataset])

The Semi-Arid Wheat Screening Nursery (SAWSN) is a single replicate trial that contains diverse spring bread wheat (Triticum aestivum) germplasm adapted to low rainfall, drought prone, semi-arid environments typically receiving less than 500 mm of water available during the cropping cycle. CIMMYT's breeding approach attempts to combine high yield potential with drought resistance for ME4. The combination of water-use efficiency and water responsive traits plus yield potential is important in drought environments where rainfall is frequently erratic across years. When rains are significantly above average in certain years, the crop must respond appropriately (water responsive) with higher yields, while expressing resistance to the wider suite of diseases that appear under more favorable conditions. Constrains including leaf, stem and yellow rusts, and Septoria spp., Fusarium spp., Pyrenophora tritici-repentis tan spot, nematodes and root rots must be considered. It is distributed to 120 locations, and contains 150-250 entries.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

17th High Temperature Wheat Yield Trial

Ravi Singh Thomas Payne (2019, [Dataset])

CIMMYT annually distributes improved germplasm developed by its researchers and partners in international nurseries trials and experiments. The High Temperature Wheat Yield Trial (HTWYT) is a replicated yield trial that contains spring bread wheat (Triticum aestivum) germplasm adapted to Mega-environment 1 (ME1) which represents high temperature areas.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA