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Trampa para determinar la densidad poblacional de la babosa, Vaginulus plebeius, plaga de frijol común
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)Pit fall traps baited with a mixture of bran, molasses, beer and carbaryl are accurate indicators of the population density of active slugs, Vaginulus plebeius. For each active slug encountered in direct nighttime counts, ... -
Evaluación al sacrificio en cabritos provenientes de los sistemas de crianza intensivo y extensivo
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)In order to evaluate carcass yield of goats, two groups of kids from 8 to 9 months old were slaughtered and weighed. Fifteen animals had been raised with an intensive feeding system using sugar cane pods supplemented with ... -
Organización del capítulo fructífero y heterocarpia en Bidens pilosa L.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)Bidens pilosa L.. (Compositae) one among the World's worst weeds, produces open globose heads of desmochorous achenes disposed radially around the receptacle. These achenes are more numerous (about 60%) in the inferior ... -
Susceptibilidad de Solanum elaeagnifolium Cav. a la acción de dos herbicidas
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)Two herbicides, glifosate and MCPA picloram, were sprayed at different doses throughout the year's growth cycle of SoIntim theagnifolium. Greatest susceptibility of the plants was registered when chemicals were applied on ... -
Influencia de la premaduración de la leche en la elaboración del queso tipo Minas
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)The objective of this study was to verify the influence of the pre ripening of milk on the manufacture of Minas cheese. The treatments were. A) fresh milk; B) pre ripened milk for 2:30 hours, raised the acidity from 0.03 ... -
Adaptación de una técnica de inmunosorbencia (ELISA) a la detección del virus del rayado fino del maíz en su insecto vector
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)An enzyme-linked immunosorbent assay (EWA ) was adapted for the detection of maize rayado lino vims (REV) in its insect vector Dalbulus midis. Optimization of experimental conditions for the assay included the use of ... -
Influencia de algunos factores meteorológicos en el consumo de agua por transpiración de Nothofagus obliqua (Mirb) Oerst, y Nothofagus dombeyi (Mirb) Oerst
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)The daily and seasonal variations of water consumption by transpiration and the influence of meteorological parameters on the transpiration intensity were studied in two species of the Fagaceas, Nothofagus obliqua and ... -
Relación entre densidad poblacional de la babosa Vaginulus plebeius y el daño en frijol común, Phaseolus vulgaris
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)Direct nighttime observations and baited pit fall traps were used to determine population densities of active slugs, Vaginulus plebeius at various distances from a source of infestation. These observations were related to ... -
Intercambio P-OH en andosoles
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)The release of OH groups and phosphate fixation on andosols soil samples were compared It is concluded that as the degree of wheathering increase, OH groups other than those of single coordination are involved in the ... -
Zonificación agroecológica para el cultivo de caña de azúcar (Saccharum spp.) en Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)This paper establishes agro-ecological zones for sugar cane crop in Costa Rica. Definitions of zoning units are based on the combination of three indexes: potential yield, climatic conditions needed for saccharose accumulation, ...
