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Now showing items 11-20 of 30
Sistema radical de la caña de azúcar 'V58-4' a los seis y doce meses de edad en un suelo del orden Mollisol del Estado Portuguesa [Venezuela, Saccharum officinarum, raíces]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The root system was studied in a sugar cane field, variety V 58-4, twelve and six months after germination. The soil is of the order Mollisol (Aquic Haplustoll) which is representative of the 26 per cent of the flat land ...
Análisis del incremento de madera en plantaciones de Pinus caribaea var. hondurensis Barr et Golf en Turrialba, Costa Rica.
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The increment of Pinus caribaea var hondurensis between 9 and 12 years of age has been calculated for 10 sample plots of 0,1 ha each established within small plantations in the Valley of Turrialba, Costa Rica. The mean ...
Eficacia de varios insecticidas en el control del gusano blanco de la papa Premnotrypes vorax (Hust.) [Solanum tuberosum, Ecuador]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
The potato white tubberworm Premnotrypes vorax (Hust) is the mmost serious pest of potato crop in Ecuador. Since 1958 control has been achieved with Aldrin and Dieldrin incorporated to the soil before planting but its no ...
Anacardium excelsum, especie forestal de los trópicos americanos
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
Caracterización morfométrica de cuatro poblaciones de Meloidogyne incognita de Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
Four Meloidogyne incognita populations (M-50, M-53, M-55 and M-56) collected from different areas of Costa Rica were characterized morphometrically. Significant differences among them were found in tail length, anal body ...
Evaluación del efecto de dosis crecientes de nitrato sobre la actividad de la reductasa del nitrato; nitrógeno derivado del fertilizante en cafeto
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
Defficient Coffea arabica L. plants were treated with CaNO, (114%15N) in doses ranging from 25 to 200 kg/ha of N The effect of the treatments on the activity of nitrate reductase and on Nitrate Assimilation Potential was ...
Desarrollo de subsistemas de alimentación de bovinos a base de rastrojo de frijol (Phaseolus vulgaris, L). III. Producción de carne
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
An experiment was conducted to evaluate common bean crop residues (CBR) as a feed for beef cattle. Feed conversion to beef was poor, this being in contrast to other favorable nutritional features of CBR. Consequently, and ...
Correlación entre los principales componentes del rendimiento y la calidad de fibra en tres variedades comerciales de algodón (Gossypium hirsutum L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
Commercial plots were planted ont in cotton (Gossypium hirsutum L) during the first half of 1978, varieties nsed included: Del Cerro, Acala 151770 and Stroman 254. A positive and significant correlation was found to exist ...
Susceptibilidad de diez cultivares de maíz (Zea mays L.) a cuatro poblaciones de Meloidogyne incognita
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
The susceptibility of ten corn cultivars (the bybrids X105A (XA) and Tico H4 (T4), and the composites Yonsafwala 7435 (Y), Tuxpeño 1 (Tx1), Poza Rica 7422 (P22), Tlaltizapan 7322 (Tz), Honduras 7322 (H), Poza Rica 7322 ...
Desarrollo de sub-sistemas de alimentación de bovinos con rastrojos de frijol (Phaseolus vulgaris L.).II.Balance metabólico a varios niveles de energía y proteína suplementaria
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
In order 10 effectively develop cattle feeding systems based on the me of common black bean crop residue, a nitrogen balance and digestibility study was conducted wing 15 Romo Sinuano bull calves averaging 150 kg in ...