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Efecto del período de amamantamiento con calostro sobre el comportamiento de terneros de lechería
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
Colostmm feeding is an important practice in any calf feeding program due to its role in imparting protection against infections through the immunoglobulths it contains. The present study was designed in order to evaluate ...
Ciclos biogeoquímicos en un ecosistema forestal de los Andes Occidentales de Venezuela, 3: Ciclo hidrológico y translocación de elementos químicos con el agua [suelos].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-04)
The annual hydrological budget in the montane forest ecosystem of San Eusebio, Mdrida, Venezuela, was studied and water samples collected and analysed for chemical composition. Total rainfall was 1 576 mm, canopy rainfall ...
Germinación de dos especies de Tiliaceas arbóreas de la vegetación secundaria tropical: Belotia campbellii y Heliocarpus donell-smithii [México].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
Seeds were collected from two species of fast growing tropical pioneer trees from Mexico. The seeds were subjected to different conditions of temperature, light and storage Beloria campbellii showed strong initial endogenous ...
Ciclos biogeoquímicos en un ecosistema forestal de los Andes Occidentales de Venezuela, 4: Modelos y conclusiones [suelos].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-04)
Following a basic model for biogeochemical cycling, the stores and transfers of N, P, K, Na, Ca, Mg, Mn, Fe and Al in the montane forest ecosystem of San Eusebio, Merida, Venezuela, are presented. The input layer of the ...
Contribución al estudio del fósforo en suelos ácidos del noroeste de España. II. Relaciones entre valores representativos del P del suelo, obtenidos por incubación o agitación con solución 0.01 M de CaCl subíndice 2, y su absorción por trébol violeta
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
P- adsorption uptake by red clover grown in an acid brown soil heavily fertilized 6 years before sampling, was correlated with soil P estimated after the procedure followed to obtain their adsorption isotherm, with the ...
Evaluación del fruto del caulote (Guazuma ulmifolia, Lam) en la alimentación de terneros.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
In order to evaluate caulote fruit (Guazuma ulmifolia, Lam) as a feedstuff; Holstein steers were fed corn silage alone and supplemented with a concentrate containing 0, 15, 30 and 45% of caulote flour. Levels up to 30% did ...
Características tecnológicas y nutricionales de 20 cultivares de frijol común (Phaseolus vulgaris), 1: Características físicas del grano [valor nutritivo].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
The objective of this work was to estimate the possible effect of variety on the physical, organoleptic and culinary characteristics of 20 bean varieties (10 black, 4 red, 3 beige and 3 white) and, taking yield into ...
Observaciones sobre la distribución espacial de Meloidogyne incognita después de la cosecha en dos plantíos de tabaco burley [Nicotiana tabacum].
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-01)
Two burley tobacco (Nicotiana tabacum L.) fields (A and B) were sampled inmediately after harvest at Repunta, Perez Makin county, Costa Rica, to perform observations on the spatial distribution of Meloidogyne incognita ...
Una metodología para la estimación-simulación de áreas de captación de lluvia in situ que optimicen en el aprovechamiento de las precipitaciones en agricultura de secano.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
Methods and procedures are described for the estimation-simulation of rain water harvest areas in situ (rain harvest-runt on lands) to maximize yield considering climates variability. Emphasis is given to the introduction ...
Uso de la isoterma de adsorción para evaluar requerimientos de fósforo, 3: Comparación con otros métodos.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-10)
A comparison of the yield of Vigna unguiculata L. var. Tuy (Frijol bayo) as predicted by a traditional extraction method (Mendell reagent) and two methods which make use of the sorption characteristics of the soils are ...