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Now showing items 41-50 of 56
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 ...
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 ...
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, ...
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 ...
Evaluación de los daños causados por el virus dorado del frijol (VMDF)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
Quantitative evaluation of losses caused by golden mosaic virus in beans (BGMV) is very difficult under field conditions due to the difficulty in having plots completely free of the disease for comparison with infected ...
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 ...
Formacao de ácidos orgánicos, acúcares e lipídeos a partir de acetato C em folhas de cafeeiro
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
The acetate 14C metabolism was studied in detached coffee leaves (Coffea arabica L. cv. 'Mundo Novo'). The leaves were incubated in 10 pCi of acetato-1-C and 10 uCi of acetato-12-25C out of Inminosity Incubation was ...
Estudios sobre la nutrición mineral del sorgo para grano. X. Eficiencia nutritiva comparativa entre sorgo para grano maíz
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-10)
This investigation was designed to estimate and to compare the nutritional efficiency of 5 grain sorghum and 6 corn cultivars. In the greenhouse, sorghum and corn plants were grown in nutrient solution until maturity, being ...
Turrialba; Vol. 30, no. 3
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)