Free, open access repository of research studies developed by CIMMYT scientists.
CIMMYT Research Data Repository
Studies: 220
46th International Durum Yield Nurseryby Global Wheat Program; IWIN Collaborators; Ammar, Karim; Payne, Thomas
Abstract:

International Durum Yield Nurseries are replicated yield trials designed to measure the yield potential and adaptation of superior CIMMYT-bred spring durum wheat germplasm that have been developed from tests conducted under irrigation and induced stressed cropping conditions in northwest Mexico. These materials have been subjected to numerous diseases (leaf, stem and yellow rust; Septoria tritici blotch) and varied growing environments. It is distributed to 70 locations, and contains 50 entries.

hdl:11529/10998
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Last Released: 14/08/2017
TAMASA Ethiopia. Variety phenology calibration dataset.by T Balemi; M Kebede; H Tonnang; B Golla; G Chala; G Gurumu
Abstract:

Experiments at five locations (Dedessa, Uke, Bako, Ambo, Holleta) in Ethiopia on an altitude gradient (1231 to 2351 m) to calibrate development or phenology of 20 maize varieties. There were two to three sowing dates at each location. Observations include dates of emergence, tassel, silking and maturity; biomass and grain yields.

hdl:11529/11011
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Last Released: 2/08/2017
Abstract:

Performance trials (N=52) in two zones (West Shewa and Jimma) in Ethiopia. Trials comprise four nutrient management treatments, namely control with zero fertilizer ; and three fertilizer recommendations to achieve the same target yield based on regional fertilizer recommendation, a Nutrient Expert (IPNI software) based recommendation and a soil-test NE based recommendation. Trials were conducted on-farm with four plots per farm. Observations include biomass and grain yields, as well as pre-sowing pH, nitrogen and phosphorus levels. Some N & K data are missing.

hdl:11529/11012
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Last Released: 2/08/2017
TAMASA Ethiopia. Yield, soil and agronomy data from farmers’ maize fields. 2016 Agronomy Panel Surveyby T Balemi; M Kebede; J Chamberlin; B Assefa; K Workneh; T Abera; T Tufa; G Hailu; G Chala; G Gurumu
Abstract:

Data from crop-cuts as part of the Agronomy Panel Survey (APS) implemented in Oromia in three Zones (East Wollega, West Showa and Jimma). The APS included 16 peasant associations and 76 communities across the western part of Ethiopia in 56 randomly selected 1 X 1 km areas from eight 10km x 10 km sampling grids. Replicated crop cuts were made on farmers maize fields and yield measured. Soil samples were also collected but have not been analysed yet.

hdl:11529/11013
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Last Released: 2/08/2017
Abstract:

This files ontains yiedl and soils data coillected by CSA (Central Statistical Agency) from four zones in Oromia (East Showa, Wollega, West and South West Showa and Jimma) and one Zone in Amhara (West Gojjam). A total of 38 primary sampling units were covered and making a total of 383 sampling points. Unreplicated crop cuts were made on farmers maize fields and yield measured. Soil samples were also collected at 0-20 and 20-50cm but are not all analysed yet.

hdl:11529/11014
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Last Released: 2/08/2017
Abstract:

Nutrient Ommission Trials (NOT's) conducted in two zones (West Showa and Jimma) in Ethiopia in 2015 and 2016. Trials comprise six nutrient management treatements, namely Control (zero fertilzer), PK, NK, PK, NPK, NPK+Ca+Mg+Zn+B. Trials were conducted on-farm with six plots per farm. Observations include soil analysis (0-20cm), biomass and grain yields

hdl:11529/11015
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Last Released: 2/08/2017
Abstract:

This dataset was obtained from maize Crop cut survey conducted in 2015 by EIAR and CIMMYT. Replicated crop cuts of 16m2 in farmers fields along with addition data on nutrient use and variety, and soil sample (0-20, 20-50 cm). Note that not all soil samples have been analysed yet.

hdl:11529/11016
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Last Released: 2/08/2017
Abstract:

Agronomy and yield survey of approximately 70 maize fields in one 10 x 10km2 area in Bako in 2015 conducted by EIAR and CIMMYT. Replicated crop cuts of 16m2 in farmers fields along with addition data on agronomy, household characteristics, fertilizer use, variety, and soil analysis.

hdl:11529/11020
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Last Released: 2/08/2017
Abstract:

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.

hdl:11529/10719
7 downloads
Last Released: 18/07/2017
Abstract:

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.

hdl:11529/10721
5 downloads
Last Released: 18/07/2017