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Showing items 1 through 9 of 14.-
Library ResourceReports & ResearchMarch, 1978Costa Rica
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Library ResourceJournal Articles & BooksDecember, 1978South America, Central America
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Library ResourceJournal Articles & BooksDecember, 1978Argentina, Bolivia, Brazil, Paraguay, Peru, South America, Central America
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Library ResourceReports & ResearchDecember, 1978Central America, South America
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Library ResourceReports & ResearchDecember, 1978Colombia, Ecuador, Bolivia, Peru, Venezuela, Nicaragua, South America, Central America
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Library ResourceJournal Articles & BooksDecember, 1978Colombia, South America, Central America
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Library ResourceJournal Articles & BooksDecember, 1978Colombia, South America, Central America
Se discuten varios conceptos relativos al mejoramiento de leguminosas forrajeras y a su adaptacion a suelos acidos de baja fertilidad. Se observa que es raro que un ecotipo nativo selecionado ofrezca todas las caracteristicas requeridas para praderas de pastoreo. Los objetivos del mejoramiento deben ser muy especificos, lo cual se logra con una estrecha colaboracion entre los introduccionistas de plantas, agronomos especialistas en leguminosas y cientificos en la utilizacion de pasturas.
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Library ResourceConference Papers & ReportsDecember, 1978Colombia, Central America, South America
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Library ResourceManuals & GuidelinesDecember, 1978Colombia, Central America, South America
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Library ResourceJournal Articles & BooksDecember, 1978Colombia, South America, Central America
A description is given of the different factors limiting to bean production in Latin America, type of damage caused, environmental conditions where they prevail, and possible control measures. With regard to diseases, the following are discussed: aphid-, whitefly- and beetle-transmitted viruses, foliage- and pod- infecting fungi, root- and stem-infecting fungi, bacterial diseases, nematodes and seed pathology. Insect pests are grouped according to the part of the plant attacked: seedlings, leaves, pods and the stored seeds.
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