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Efectos de N, P y K en el contenido y producción de proteína en el sorgo para grano (Sorghum bicolor) en solución nutritiva
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-04)
Effects of N, P and K on protein contents and protein production of grain sorghum.
The experiment was designed to study the effects of nitrogen, phosphorus and potassium defficiences on protein contents of 5 grain sorghum ...
Los perfiles de humedad vertical de hojas en una plantación de café
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
This work studies the leaf wetness vertical profiles in a coffee crop. Visual observation of wetness was done at several heights on west and east faces of plants under recent low topping condition, on the west face of ...
Epoca de ataque de Acanthoscelides obtectus (Say, 1813) a la planta de frijol (Phaseolus vulgaris L.) bajo condiciones de campo
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-07)
With the objective of determining when bean (Phaseolus vulgaris L.) developing pods are more susceptible to infestation from Acanthoscelides obtectus Say, 1813), four separate infestations treatments were tested, under ...
Efecto del nivel de cloruro de potasio en la formación de agallas en trasplantes de café y en la reproducción de Meloidogyne exigua
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
The effect of potassium chloride on Meloidogyne exigua in coffee transplants was studied under greenhouse conditions. The dosages were 0, 10, 20 and 30 g of KCI/pot of 4 1 capacity and each plant was inoculated with 5 000 ...
Balance de energía en soya (Glycine max L. Merr)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
The energy balance method was used to estimate the partitioning of the avariable net radiation on a soybean crop. Results of the distribution of the net radiation into the various components of the energy balance ...
Temperatura do ar em cafezal
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
This paper studies the thermal 1egime of añ inside an unshaded conventional coffee crop.
Measmements were made al five levels corresponding lo 20, 40, 60, 80 and 100 per cent of mean crop height.
Air temperature inside ...
Análisis comparativo entre el uso de flujo constante y reducción del flujo inicial y sus efectos en la eficiencia de la irrigación por surco
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
A comparison study was made between two kinds of furrow irrigation with short furrows One consisted of the application of constant flow on the furrow, by means of siphons, for R values of 0.26, 1.0, and 2.0. The other was ...
Fluctuación de la población de parásitos y predatores de Perileucoptera coffeella (Guérin-Mèneville, 1842) en tres localidades del estado de Sao Paulo
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
The fluctuation of parasites and predators of the coffee leaf miner Perileucoptera coffeella (Guérin-Mèneville, 1842) (Lepidoptera-Lyonetiidae) was studied in Campinas, Franca and Pindorama in the State of Sao Paulo, Brazil, ...
Medidas simultáneas del potencial de agua tanto en el suelo como en las hojas y raíces de plantas de maíz (Zea mays L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
Experiments were undertaken using growth chamber grown corn plants (Zea mays, L. ) hybrid "United 108," to characterize the relative magnitude of the water-potential in the soil and within the plant. Root water potential ...
La determinación, por microscopio electrónico, de las dimensiones de las partículas del virus de la poliedrosis nuclear (NPV) de Anticarsia gemmatalis Hubner en Bombyx mori L
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-10)
A nuclearpolyhedrosis in caterpillars of A. gemmatalis was transmitted to the silkworm, B. mori. This might explain the occurrence of nuclear polyhedrosis in useful insects, acquired from other insects.
An examination of ...