CIMMYT Research Data & Software Repository Network
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Fertility Maps of Chamic, Chiapas.
No full textSoil sampling with 1x1 km grid in the agricultural area of the Chamic Municipality at at 0 to 30 cm depth
2022 CIMMYT Maize Latin America Product Announcement for Product Profile LA-PP1 / Anuncio de Productos de Maíz de CIMMYT en Latinoamérica por el Perfíl de Productos LA-PP1
No full textNew and improved maize hybrids, developed by the CIMMYT Global Maize Program, are available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across Latin America and similar agro-ecological zones. Following a rigorous trialing and a stage-gate advancement process culminating in the 2020 Stage 5 trials, CIMMYT advanced a total of four new elite maize hybrids in Latin America in 2022 for Product Profile LA-PP1. These are yellow and white maize hybrids adapted for the tropical lowlands. Phenotypic data collected in Stage 4 and Stage 5 trials for the four selected hybrids as well as information about the trial sites are provided in this dataset. These trials were conducted through a network of partners, including NARS and private seed companies, in Latin America under various management and environmental conditions.
Nuevos y mejorados híbridos desarrollados por el Programa Global de Maíz del CIMMYT se ponen a disposición de instituciones del sector público y privado, especialmente para aquellas instituciones colaboradoras interesadas en la comercialización y diseminación de semilla de maíz en Latinoamérica o en zonas agroecológicas similares. Después de un riguroso proceso de evaluación de germoplasma en distintas etapas que culminó en ensayos de evaluación de híbridos en etapa cinco, el CIMMYT avanzó cuatro nuevos híbridos élite en Latinoamérica en 2022 por el Perfíl de Producto LA-PP1. Estos son híbridos amarillos y blancos adaptados a las tierras bajas tropicales. Datos fenotípicos recopilados en los ensayos en etapa cuatro y cinco por los cuatro hibridos avanzados, además de información sobre los sitios están incluidos en este conjunto de datos. Estos ensayos fueron conducidos bajo diferentes condiciones de manejo y ambientes a través de redes colaborativas con instituciones de investigación pública y empresas semilleras de Latinoamérica
Multi-year on-farm trial data on performance of timely and late sown wheat varieties against sowing dates in eastern Indo-Gangetic plain of India
No full textWheat productivity in eastern Indo-Gangetic plain is sub-optimal that can largely be attributed to delayed wheat sowing and use of late sown varieties. Ideal time of sowing wheat in eastern India is first fortnight of November but in general, it gets delayed by 15-25 days. This delay puts farmers in a situation where they tend to prefer late sown varieties whose potential yields are low. By 2020, more than half wheat farmers in Bihar more than one third in eastern Uttar Pradesh were using late sown wheat varieties.
To validate the effect of timely sowing and comparative performance of long and short duration varieties, multi-location on-farm trials were conducted continuously over five years starting from 2016-17. Krishi Vigyan Kendras, district-level extension centre of national agriculture research and extension system were involved in the process of evidence generation. Ten districts so ten centres were selected in a way that all agro-climatic zones of this area is covered. There were five treatments of sowing windows – 01 to 10 November, 11 – 20 November, 21 to 30 November, 01 – 15 December and 16 – 31 December. Varietal performance was compared in T3, T4 and T5 as short duration varieties can’t be sown before 20 November. There is asymmetry in distribution of samples within treatments and over years. That happened as trial was in farmer’s participatory mode and numbers were dependent completely on willingness of farmers to participate. Altogether, the trial was conducted at 3735 sites and we captured 60 variables including yield and yield attributing traits
Replication Data for: Low-density reference fingerprinting SNP dataset of CIMMYT maize lines for quality control and genetic diversity analyses
No full textCIMMYT develops and distributes elite tropical CIMMYT maize lines (CMLs) for use around the world. This dataset contains genotypic profiles for all 615 of the CML lines released by 2022 and fourteen temperate maize inbred lines. All lines were genotyped with 180 kompetitive allele-specific PCR (KASP) markers. These data were used to generate a reference fingerprinting dataset using 152 high-quality markers. These data were also used to perform analyses concerning the relationships between different CMLs and temperate materials in the accompanying journal article
Daily PM2.5 emissions from wheat and rice residue burning in northern India
No full textDataset of daily fine particular matter (PM2.5) emissions for the period 2012 though 2020. Emissions were calculated from wheat and rice production statistics and active fires from the Visible Infrared Imaging Radiometer Suite (VIIRS) 375-m product. Rice harvest period was considered from October to November, and wheat harvest from April through May
12th High Rainfall Wheat Yield Trial
No full textCIMMYT annually distributes improved germplasm developed by its researchers and partners in international nurseries trials and experiments. The High Rainfall Wheat Yield Trial (HRWYT) contains very top-yielding advance lines of spring bread wheat (Triticum aestivum) germplasm adapted to high rainfall, Wheat Mega-environment 2 (ME2HR)
6th Wheat Yield Collaboration Yield Trial
No full textThe WYCYT international nurseries are the result of research conducted to raise the yield potential of spring wheat through the strategic crossing of physiological traits related to source and sink potential in wheat.
These trials have been phenotyped in the major wheat-growing mega environments through the International Wheat Improvement Network (IWIN) and the Cereal System Initiative for South Asia (CSISA) network, which included a total of 136 environments (site-year combinations) in major spring wheat-growing countries such as Bangladesh, China, Egypt, India, Iran, Mexico, Nepal, and Pakistan
Fertility Maps of Salamanca, Guanajuato 2020.
No full textSoil sampling with 1x1 km grid in the agricultural area of the Salamanca Municipality at at 0 to 30 cm depth
Conservation agriculture for sustainable intensification in South Asia
No full textAgriculture’s contribution to the Sustainable Development Goals requires climate-smart and profitable farm innovations. In the
past decade, attention has been given to conservation agriculture as a ‘sustainable intensification’ strategy, although a lack of
evidence-based consensus on the merits of conservation agriculture prevails in the context of intensive smallholder farming
in South Asia. A meta-analysis using 9,686 paired site–year comparisons representing different indicators of cropping-system
performance suggest significant (P < 0.05) benefits when conservation-agriculture component practices are implemented
either separately or in tandem. For example, zero tillage with residue retention had a mean yield advantage of 5.8%, a water
use efficiency increase of 12.6%, an increase in net economic return of 25.9% and a reduction of 12–33% in global warming
potential, with more-favourable responses on loamy soils and in maize–wheat systems. Results suggest that there are opportunities
to maximize expected benefits, and policymakers and development practitioners should continue to be appraised of the
potential of CA for contributing to the Sustainable Development Goals in South Asia
Maize experiment with increasing rates of nitrogen to develop a calibration for the GreenSeeker in Hidalgo.
No full textThis experiments were established with different rates of nitrogen in order to generate a wide range of values for NDVI and grain yield in order to develop a calibration model for the GreenSeeker in Hidalgo