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Sistema radical de la caña de azúcar 'V58-4' a los seis y doce meses de edad en un suelo del orden Mollisol del Estado Portuguesa [Venezuela, Saccharum officinarum, raíces]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The root system was studied in a sugar cane field, variety V 58-4, twelve and six months after germination. The soil is of the order Mollisol (Aquic Haplustoll) which is representative of the 26 per cent of the flat land ...
Análisis del incremento de madera en plantaciones de Pinus caribaea var. hondurensis Barr et Golf en Turrialba, Costa Rica.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The increment of Pinus caribaea var hondurensis between 9 and 12 years of age has been calculated for 10 sample plots of 0,1 ha each established within small plantations in the Valley of Turrialba, Costa Rica. The mean ...
Eficacia de varios insecticidas en el control del gusano blanco de la papa Premnotrypes vorax (Hust.) [Solanum tuberosum, Ecuador]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The potato white tubberworm Premnotrypes vorax (Hust) is the mmost serious pest of potato crop in Ecuador. Since 1958 control has been achieved with Aldrin and Dieldrin incorporated to the soil before planting but its no ...
Caracterización morfométrica de cuatro poblaciones de Meloidogyne incognita de Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
Four Meloidogyne incognita populations (M-50, M-53, M-55 and M-56) collected from different areas of Costa Rica were characterized morphometrically. Significant differences among them were found in tail length, anal body ...
Evaluación del efecto de dosis crecientes de nitrato sobre la actividad de la reductasa del nitrato; nitrógeno derivado del fertilizante en cafeto
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
Defficient Coffea arabica L. plants were treated with CaNO, (114%15N) in doses ranging from 25 to 200 kg/ha of N The effect of the treatments on the activity of nitrate reductase and on Nitrate Assimilation Potential was ...
Desarrollo de sub-sistemas de alimentación de bovinos con rastrojo de frijol (Phaseolus vulgaris, L.). I. Disponibilidad, composición y consumo del rastrojo de frijol
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
An experiment was effected to determine the production of common black bean residue under different cropping situations found in Central American small farms. Laboratory analyses were carried out to characterize the chemical ...
Epocas de siembra y deshierbo para el cultivo de la quinua [Chenopodium quinoa] en condiciones del Altiplano de Puno, Perú.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
This study was undertaken to investigate the effects of two agricultural management variables, time periods for planting and weed control, on quinua (Chenoapodium quinoa) yield. On average rainfall distribution years it ...
Determinación cuantitativa de la floración en café Coffea arabica L
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
A quantitative method is described for determining flowering in coffee. The size of each bloom is estimated visually with the aid of the following scale: 1-25%, 2-50%, 3-75% and 4-100% after a general survey of the planiation. ...
Desarrollo de sub-sistemas de alimentación de bovinos con rastrojos de frijol (Phaseolus vulgaris L.).II.Balance metabólico a varios niveles de energía y proteína suplementaria
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
In order 10 effectively develop cattle feeding systems based on the me of common black bean crop residue, a nitrogen balance and digestibility study was conducted wing 15 Romo Sinuano bull calves averaging 150 kg in ...
Fertilización del cultivo de quinua [Chenopodium quinoa] en condiciones del Altiplano de Puno, Perú [fertilizantes NPK]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The purpose of this study was to determine quinua (Chenopodium quinoa) yield responses to applications of N.P.K, in conditions of Puno Highlands, Peru. Quinua production was significantly increased by N applications, while ...