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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, ...
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 ...
Estudio microbiológico de maceración de arroz (Oryza sativa). II. Determinación de los contenidos de algunos ácidos orgánicos en el líquido de maceración del arroz
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
It is a usual procedure to soak the rice with water, before the husking process, to avoid fragmentation In Brazil, this is usually carried out at room temperature (25— 30°C), inducing off flavors in commercial products. ...
Acumulación de materia seca y micronutrimentos de dos cultivares de yuca (Manihot esculenta Crantz)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
This paper deals with the results obtained in the determination of dry matter and macronutrients in cassava setts in several periods of the life cycle of the plant. It was shown that setts had a three fold increase in dry ...
Estudio comparativo de cultivares de repollo (Brassica oleracea L. var. capitata L.) con relación a la producción de repollo fermentado: carbohidratos solubles, acidez total, pH y tiempo de fermentación
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1982-04)
In a comparative study of twenty-three cabbage cultivars, regarding sauerkraut production under natural fermentative process, contents of soluble carbohydrates, total acidity as lactic acid, pH and fermentation time were ...
Determinación de S cambiable del suelo por el método colorimétrico del metiltimol azul
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1982-04)
Traditional methods Jim determinist the exchangeable S of soils lack sensitivity, reproducibility, and are too time consuming. The method described in this paper is more favorable. Blue methylthymol in a high pH (12.70) ...
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 ...
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 ...