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Now showing items 81-87 of 87
Relaciones fósforo-zinc en tres suelos ácidos de Costa Rica, 1: comportamiento en el suelo.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-07)
The effects of high P and Zn applications and their interactions were studied in three acid (pH 5 .3-5.9 ) soils of Costa Rica. It was observed that as all three soils fixed P strongly, the obtained available P levels, ...
Una poliedrosis de Spodoptera frugiperda en Venezuela [Zea mays].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-07)
A nuclear polvhedrosis virus (x polyhedra = 1.60 x 1.50 p) with multiple enveloped nucleocapsids was found infecting Spodoptera frugiperda larvae collected in corn (Zea mays) plants in Venezuela. A dosis of 6 106 polyhedra ...
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 ...
Determinación del potencial agroclimático para la producción de caña de azúcar (Saccharum officinarum L.) en Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-01)
The agroclimatic potential of sugar cane is defined by estimating a production function for dry matter, performing a rainfall frequential analysis, and calculating a climatic ripening index. This requires the use of data ...
Efecto de diferentes poblaciones de maíz (Zea mays) en la producción de raíces de yuca (Manihot esculenta) al cultivarlos en asocio. I. Aspectos agronómicos
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)
Maize (cv Tit-weft PB-C7) was intercropped with cassava (cv. Valencia) to assess the effect of different maize populations on cassava root yield with two levels of fertilization.
The experiment was conducted at Turrialba ...
Propagación vegetativa in vitro de pejibaye (Bactris gasipaes H.B.K.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1983-04)
Clonal propagation of pejibaye palm (Bactris gasipaes H. B. K.) was obtained by calhis culturing from shoot apices of young filed-grown plantlets on a modified Murashige and Skoog medium. Callus was induced from cultured ...
Status and trends in international trade and local utilization of wildlife in Central America
(Centro Agronómico Tropical de Investigación y Enseñanza, Turrialba, Costa Rica, 1983)