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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 ...
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 ...