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Alguns efeitos de diferentes concentracoes de vinhaca sobre o crescimento inicial de Phaseolus vulgaris L.
(1987-07)
Para lograr su germinación se colocaron semillas de P. vulgaris en dos estructuras diferentes: a) en cajas de PVC, con medio líquido y en la oscuridad, y en b) vasos con arena a la capacidad de campo y en régimen alternante ...
Citogenética do híbrido interespecífico (Coffea arabica L. var. Bourbon x C. canephora Pierre ex Froehner var. Robusta (Linden) Chev.) que originou of Café Icatu
(1987-04)
O café Icatu tem grande interesse na cafeicultura pela maior resisténcia á pragas e moléstias. Foi originado do cruzamento do hyaplóide de C. arabica duplicado, portanto com 2n = 44 cromossomos e homozigoto, com C. canephora ...
Consumo e longevidae de adultos de Labidura riparia (Pallas) (Dermaptera, Labiduridae) em ovos de Diatraea saccharalis (F.) (Lepidoptera, Pyralidae)
(1987-10)
Este trabajo trata del estudio de la longevidad de Labidura riparia (Pallas) (Dermaptera, Labiduridae) y su consumo de huevos del barrenador de la caña de azúcar, Diatraea saccharalis (F.) (Lepidoptera, Pyralidae). Los ...
Efeito da trifluralina na cinética de absorcao de fósforo pela soja
(1987-10)
The effects of Trifluralin upon soybean (Glycine max (L.) Merrill, c.v. Paraná) phosphorus uptake and translocation were studied in nutrient solution, utilizing 32 p. Concentrations of 0 to 4 ppm of trifluralin (a.i.) were ...
Molhamento foliar em cafezal recepado e decotado
(1980-01)
This paper reports on the study of the beginning termination and duration of the active period of leaf wetness in the coffee. Surface wetness was observed in two plots a vranged in a north-south orientation, on the sides ...
Fenologia de Melia azedarach L. no sul do Brasil
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
This paper reports 12 months of phenoloagical observations of Melia azedarach growing an the Horto Fiorestal “Navarro de Andrade", Rio Claro, Sao Paulo, Brasil. This place is located in an area with a mean annual rainfali ...
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 ...
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 ...
Evaluación de la actividad de enzimas del grupo de las fenoloxidasas en pulpa del camote (Ipomoea batatas)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
For the purpose of evaluating the enzymatic action of the phenol oxidase and polyphenol groups in sweet potato pulp, a suitable method was sought which would not involve very complex laboratory techniques. After testing, ...
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 ...