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Análisis comparativo del uso del tiempo por algunos agentes agrícolas en Venezuela
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-10)A sample of six agricultural agents in Venezuela to determine their use of time. An observation guide allowed checking several topics every five minutes and a questionnaire was used to determine the opinions of effective ... -
Comportamiento de pseudoestacas de cinco especies maderables variando dosel y época de plantación
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-10)The behaviour of five timber species was studied when planted by stumps, in two seasons and both under forest and grass canopies. Results showed that initial survival was higher under forest for mahogany (Swietenia humilis), ... -
Retardamiento de la germinación de semilla de cacao por medio de azúcares
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-10)Peeled cacao seeds were treated with solutions of sucrose and glucose of different concentrations. The treatments were found to cause the embryos to enter into a state of dormancy. This inhibition effect disappeared when ... -
Studies on the effect of mulch and irrigation on root and stem development in Coffea arabica L. 2. A five year water-budget of a coffee irrigation experiment
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-10)Se presenta un análisis retrospectivo de un presupuesto de agua en un experimento de riego de café, siguiendo métodos desarrollados en Kenya. Los resultados indicaron que el nivel medio de irrigación fue inadecuado para ... -
Estudio silvicultural y económico del sistema Taungya en condiciones de Turrialba
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-07-01)Two different systems of reforestation were compared, the taungya system in which the planting of agricultural crops is combined with the planting of valuable timber trees, and the current system of reforestation, which ... -
Pesos al destete y aumentos de peso en ganado de carne
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-07-01)Data were analized on growth of Brahman and Santa Gertrudis beifers, from weaning to an age of 18 months. Accumulated data from 1956 to 1961, involved 28 Brahman and 40 Santa Gertrudis The avevage birth weight was 316 kgs ... -
Discorea Friedrichsthalii, another sapogenin-bearing species
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-07-01)Un name silvestre que contiene sapogenina, recibido de Costa Rica, ha sido identificado con el nombre botánico de Dioscorea friedrichsthalii R Knuth Esta espe-cie crece satisfactoriamente en Puerto Rico y ha sido incluida ... -
Desarrollo de una ración práctica para la alimentación de pollos. II. Uso de varios suplementos
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-10)Several experiments were carried out to determine the necessary supplements for a simplified ration for growing chicks. All the ingredients of the rations were available in Central America. The results indicate that the ... -
La roya de la papa causada por Puccinia Pittieriana y su combate químico en Ecuador
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-07-01)Irish potato crops in certain high altinde places of Ecuador we beavily infected by Puccinia Pittieriana, destroying completely the plants. In order to determine its che-mical control, a field experiment was made at Tufiño, ... -
Ciencia Agrícola en las Américas
(Instituto Interamericano de Ciencias Agrícolas (IICA), 1963-07-01)En esta sección se publican notas de interés técnico sobre conferencias internacionales programas de investigación, extensión y educación, nombramiento de personal directivo, organización de nuevas instituciones, distinciones ...
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