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Now showing items 411-420 of 676
Aluminio activo en suelos derivados de cenizas volcánicas de Costa Rica y Guatemala
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-07)
Active aluminum extracted with 0.2 M ammonium oxalate, pH 30, and 4 M KOH of 51 samples of Andepts of Costa Rica and Guatemala was quantified and compared. Acid-oxalate extractable alumimum varied from 0.02 to 5.45 while ...
Efecto de la densidad de siembra en la distribución de materia seca en la planta de frijol (Phaseolus vulgaris L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
The purpose of this study was to evaluate the effect of sowing at four different densities on the production of dry weight per square meter, dry weight per plant, and relative distribution of dry weight among different ...
Efecto de la densidad de siembra sobre algunas características morfológicas y el rendimiento en frijol común (Phaseolus vulgaris L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
During the second semester of 1976, four varieties of common bean (Phaseolus vulgaris L.) of indetermined habit were sown at four densities; 6, 12, 14 and 48 x 104 plants/ha in a suitable site.
The varieties sown were Ica ...
Características del palmito fresco y procesado al horno de la palma de pejibaye (Bactris gasipaes)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
Some physical characteristics and chemical composition of the raw and oven baked heart (palmito) of pejibaye palm {Bactris gasipaes H B. K.) are reported.
The weight yield per unit of length (ke/m) was found to be closely ...
Elementos prioritarios en la nutrición mineral de Leucaena leucocephala (Lam) de wit en un suelo ácido de Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-01)
The response of Leucaena leucocephala (Lam) de Wit cv. Peri to different nutrients in an acid soil of Costa Rica was evaluated in a glasshouse experiment, using the missing or additive element technique. Fourteen treatments ...
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% ...
Fertilidad de Typic Dystrandepts de Costa Rica. I. Metodología, acidez y cationes (Ca, Mg, K, Fe, Mn, Zn, Cu)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
The fertility of nine Typic Dystrandeprs of Costa Rica was studied under laboratory and greenhouse conditions. Chemical soil analysis, retention curves for K, Mg. Mn, Zn, Qu, P, B and S. foliar analysis from sorghum plants ...
Fertilidad de Typic Dystrandepts of Costa Rica. II. Aniones (N, P, B, S, Mo), materia orgánica y textura
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
The studied anions present similar nutritional characteristics in the nine Typic Dystrandepts of Costa Rica. P deficiency is the main lümiting problem, and in practice, the only one. P retention percent varies between 80 ...
Actividad fito-estrogénica del trébol blanco in vitro e in vivo y su fluctuación en relación a variables climáticas. Estado metabólico y fermentación ruminal
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1984-04)
There is no clear understanding of estrogen activity in white clover, nor its effects on animal fertiłity. Because this plant is a major protein source for livestock in Latin America, estrogen activity was measured during ...
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 ...