Revistas: Recent submissions
Voici les éléments 161-170 de 3359
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Physiological studies on flowering in coffee under South Indian conditions, 4: Some physical properties and chromatographic assay of a gum-like substance exuded by flower buds
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-10-01)Se describen algunas propiedades físicas, tales como color, apariencia, textura, olor y solubilidad de la sustancia gomosa exudada por yemas florales maduras de Coffea arabica (cv `S.795'), Coffea canephora (cv `S.274') y ... -
Adsorcao de nitrato em Latossolos sob vegetacao de cerrado
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-10-01)Adsorption of nitrate by nine oxisols collected in cerrados (savannah) from Brazil was measured in solutions containing graded amounts of KNO, Nitvate adsorp-tion for B-horizons varied from 0.11 mmol/100 g for soil suspensions ... -
Effect of season on sun drying of cocoa beans in Brazil
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-10-01)Natural or sun-drying of cocoa beans in Brazil, after fermentation, takes place on a flat, smooth, horizontal platform called a "barcaca." This paper presents the results of an experimental study conducted at the Centro ... -
Studies on the shootborer Hypsipyla grandella (Zeller) (Lep., Pyralidae). XXIII. Electroantennograms (EAG) as a tool in the analysis of insect attractants
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)Las respuestas olfatorias en los insectos, tales como las representadas en un electroantenograma (EAG), rinden información sobre la capacidad sensoria de oler sustancias que sirven para reconocer parejas, alimentos, o ... -
Influencia del suministro de nitrógeno en la absorción de algunos minerales por el frijol (Phaseolus vulgaris L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)The investigation deals with the quantitative determination of ion uptake by the bean plant (Phaseolus vulgaris L.) namely, NO3-, Ca2+, Mg2+, K+ and phosphate, during the time elapsed between germination and preflowering ... -
Efeito do etileno sobre o tipo e qualidade da bebida de café
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)Previous studies have shown that Ethrel accelerated the process of maturation so that coffee fruits mature 15 days after application. In the present work the effect of 2-chloro ethane-phosphonic acid (Ethrel) applications ... -
Reseña de libros
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)Este artículo presenta comentarios de distintos autores, sobre diferentes libros; un resumen, los datos de cada libro y la opinión personal acerca del mismo. -
Low cone yields of Honduras pine in Puerto Rico not due to pollen abortion
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)El examen de 2200 gramos de polen por árbol de 10 ejemplares de Pinus caribaea var. hondurensis indicó que el aborto del polen por árbol era de 9,80 % ± 0.93 de error estándar. Se concluye que el polen del pino en Puerto ... -
Susceptibilidad de las larvas de Sibine apicalis (Dyar) a Bacillus thuringiensis var. kurstaki
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)It is shown that field applications of a laboratory preparation of Bacillus thuringiensis are efective against the banana saddleback caterpillar, Sibine apicalis -
Ensaios preliminares em laboratório para o controle do manhoso, Chalcodermus bimaculatus Fiedler, em feijão-de-corda, Vigna sinensis Endl., com inseticidas orgânicos sintéticos
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1974-01)The preventive action of Endrín, Diazinon, Toxaphene, Chlordane and Malthion was studied for the control of Chalcodermus bimaculatus Fiedler, in cowpeas, Vigna sinensis Endl. The Endrin and Diazinon had good lethal and ...
