Library Resource
Documents de politique et mémoires
septembre, 2017
Pakistan, Asie, Asie méridionale
Résultats de la recherche
Résultats de la recherche
Showing items 1 through 9 of 755.-
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Library ResourceArticles et Livresdécembre, 1982Colombie, Amérique centrale, Amérique du Sud
Se describen los resultados obtenidos durante 1981 por la seccion de Microbiologia del Suelo del Programa de Pastos Tropicales del CIAT, cuyos objetivos especificos son: 1) seleccionar leguminosas forrajeras promisorias que no requieren inoculacion; 2) seleccionar cepas de Rhizobium para leguminosas que si necesitan inoculacion; y 3) evaluar el efecto de las tecnicas de inoculacion y practicas de manejo de pastos en la nodulacion y fijacion de N en el campo. Se presentan los resultados de 1) expt.
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Library ResourceArticles et Livresdécembre, 1980Pérou, Colombie, Argentine, Mexique, Brésil, Amérique centrale, Amérique septentrionale, Amérique du Sud
White mold, caused by the fungus Sclerotinia (Whetzelinia) sclerotiorum, is distributed worldwide and has more than 300 hosts. It infects flowers, cotyledons, seeds, leaves or injured plant tissue. The disease can be controlled by crop rotation, flooding, reduced seeding rates, application of chemical products in the middle of the flowering period, modifying plant architecture and the use of resistant var. Many soil microorganisms are associated with sclerotia and may cause them to degrade or fan to germinate. The symptoms and damage caused by the disease are illustrated in color.
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Library ResourceDocuments de politique et mémoiresseptembre, 2017Nicaragua, Amérique centrale, Amérique du Sud
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Library ResourceRapports et recherchesdécembre, 2015Amérique centrale, Caraïbes, Amérique du Sud
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Library ResourceArticles et Livresdécembre, 1979Colombie, Amérique centrale, Amérique du Sud
Some cultural control measures of weeds in cassava are discussed: quality of the material, planting system and density, density x plant type interaction and use of mulching. In order to study the interaction plant type x planting density, var. M Mex 59 (vigorous) and M Col 22 (nonvigorous) were planted in plots of 7500 and 15,000 plants/ha; and 3 levels of weed control were established: complete, intermediate and no control. The vigorous var.
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Library ResourceArticles et Livresdécembre, 1979Colombie, Amérique centrale, Amérique du Sud
Multiple cropping, sequential cropping, intercropping, mixed intercropping, intercropping in rows, in strips, relayed intercropping, cropping patterns, monoculture, crop rotation and land equivalent ratio are defined. The characteristics of multiple cropping and intercropping with beans are discussed; for the latter problems of competence are discussed (light, CO2, water and nutrients). Some cultural practices are recommended for cassava/bean intercropping: soil and fertilization type, water availability, propagation material, and weed, pest and disease control.
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Library ResourceDocuments de politique et mémoiresdécembre, 2017Ouganda, Afrique, Afrique orientale
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Library ResourceArticles et Livresavril, 2018Colombie, Amérique centrale, Amérique du Sud
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Library ResourceArticles et Livresdécembre, 1980Venezuela, Brésil, Amérique centrale, Amérique du Sud
Different nutritional deficiencies or toxicities may limit bean development and yield. N and P deficiencies are the most frequent, although deficiency of minor elements and Al/Mn toxicity can reduce yields considerably. Nutritional problems are usually diagnosed by soil and plant tissue analyses and the observation of symptoms produced by nutritional disorders. Optimum pH for bean production varies between 6.5-7.5; within these limits, the majority of the plant nutrients have their max availability. Color illustrations are given of the symptoms of plant deficiencies and toxicities.
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