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Now showing items 651-660 of 676
Absorción de exponente 15 N de los fertilizantes en una rotación Allium sativum - Setaria italica, en lisímetros
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
Nitrogen uptake by an annual rotation of garlic (Allium sativum/ and millet Setaria italica) from tagged urea and ammonium sulfate applied toa Typic Haplus toll in a battery of differential weighing lysimeters was studied ...
Capacidad de la pulpa del café para la producción de biogas
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
Se investigó la degradabilidad de la pulpa de café mediante la fermentación anaeróbica metanogénica a escala de laboratorio de 250 cm3 en proceso discontinuo ("bath") y a escalas de 2.5, 20 y 200 dm3 en proceso semicontinuo. ...
Incidencia del virus de la tristeza de los cítricos en Venezuela
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
Citrus tristeza virus was detected by ELISA in 53% of the citrus trees tested in Aragua, Carabobo and Yaracuy states Vinus-like particles with the shape and size of CTV were visualized by electron microscopy. The severe ...
Resíduos, degradación y persistencia del fungicida maneb en patatas, en Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-01)
Residues of the fungicide maneb (manganese-1,2-ethylen-bisdithiocarbamate) were analyzed by the carbondisulfide evolution method in samples of potatoes, potato leaves and soil from a commercial crop located in Llano Grande ...
Fertilización potásica de papa (Solanum tuberosum L.) en cultivo bajo riego
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-01)
The objective of this research was to study the effect of potassium fertilization on potato.
During October 1979 — March 1980 measurements of yield, tuber quality and starch content were made in a field experiment on ...
Efecto de la fertilización nitrógeno-fosfatada sobre el crecimiento otoño-invernal y la absorción de fósforo en tepes de un pastizal natural.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-07)
The effect of fertilization with triple superphosphate and ammonium sulfate on the botanical composition and thy matter production in pods of a pasture of naturalized species was studied during an autum-winter period. The ...
Control de la mancha azul en madera de Pinus caribaea var. hondurensis Barr. et Golf. en Turrialba, Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-10)
This paper was designed to study the control of blue stain in Pinus caribaea var. hondurensis at Turrialba, Costa Rica.
The mixture of pentaclorophenol and diesel was not effective to avoid neither control blue stain in ...
Actividad amilásica durante la germinación del grano de trigo. Estudio electroforético
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
The alpha and beta's amilase activities in extracts of seeds of wheat (Buck Manantial) matured and at differents stages of germination was determined. In the matured seeds the main part of the activity belongs to beta ...
Pudrición del fruto del banano causada por Sclerotinia sclerotiorum (Lib.) de Bary (Whetzelinia sclerotiorum en Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
A disease of the banana fruit caused by Sclerotinia sclerotiorum (Lib) de Bary (Whetzelinia scierotiorum) was observed in the Experimental Station of the Tropical Agri
cultural Training & Research Center, CATIE, at ...
Efecto de tres tratamientos pregerminativos sobre la germinación y viabilidad de las semillas de Enterolobium cyclocarpum (Jacq) Griseb
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
Non-treated seeds of Enterolobium cyclocarpum (Jacq} Griseb achieved a 9% germination 30 days after planting. Soaking the seeds in concentrated sulfuric acid and in boiling water raised germination up to 87% and 83% ...