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Weed control in Latin America is costly and heavily dependent upon herbicides. Often irrigated rice farmers spray herbicides in late post-emergence at 30 to 44 days after emergence (d.a.e.). The economic benefits from such late applications are often unclear. Two experimental approaches involving...


Fischer, Albert J.Ramírez Suárez, A.[Mixed weed infestations : prediction of crop losses for economic weed management in rice]Mixed weed infestations : prediction of crop losses for economic weed management in rice

Results of a study on bean cultivation in El Salvador are given. Aspects analyzed were as follows: consumption structure (apparent, per capita, and rural-urban; preferences, consumption and cooking ways, and nutritive value); area, production, and yields (at national and regional levels, by cropp...


Portillo de Villegas, MEGaona R, J[El frijol en El Salvador: implicaciones para la investigacion agricola]El frijol en El Salvador: implicaciones para la investigacion agricola

Tergas, Luis EduardoUrrea, G.A.[Efecto de tres niveles de fertilidad sobre la produccion de pastos tropicales en un ultisol de Colombia]Efecto de tres niveles de fertilidad sobre la produccion de pastos tropicales en un ultisol de Colombia

Grof, BThomas, D.[Agronomic evaluation of grasses in the tropical savannas of South America. 3]Agronomic evaluation of grasses in the tropical savannas of South America. 3

Mesa, EAmézquita, María CristinaToledo, José M.[Rango de adaptacion de B. dictyoneura cv. llanero; A. gayanus cv. carimagua1 y S. capitata cv. Capica en Colombia]Rango de adaptacion de B. dictyoneura cv. llanero; A. gayanus cv. carimagua1 y S. capitata cv. Capica en Colombia

Keller-Grein, GerhardToledo, José M.[Nueva tecnologia de pasturas para la Amazonia]Nueva tecnologia de pasturas para la Amazonia

Torres G., C.Lenne, J.M.[Enfermedades bacterianas de algunas leguminosas forrajeras promisorias]Enfermedades bacterianas de algunas leguminosas forrajeras promisorias

Thomas, D.[Development of forage species for the acid infertile soils of tropical South America]Development of forage species for the acid infertile soils of tropical South America

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