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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 ...
Variaciones morfométricas y respuesta de nueve hospedantes diferenciales a tres poblaciones de Meloidogyne javanica de Costa Rica
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
Three Meloidogyne javanica populations (MJ-1, MJ-2 and MJ-3) collected from Theobroma cacao, Nicotiana tabacum and Stachytarpheta jamaicense at different localities of Costa Rica, were characterized morphometrically and ...
Contenido de cianuro total y libre en parénquima y cáscara de raíces de diez variedades promisorias de yuca [Manihot esculenta]
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-10)
Because of the lack of cyanide content data and the great degree of variability in earlier such reports, roots of promising cassava gentoypes from the Cassava Varietal Improvement Program at CIAT were analyzed for total ...
Variación estacional de la reductasa de nitrato en el cafeto
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
The sesonal trends of nitrate reductase activily, of NO-3 induced activity of the same enzyme, and of the quotient between them, aRNi/aRNb, known as Nitrate Assimiletion Potential, were investigated. Assays were carried ...
Reseña de libros
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-07)
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 ...
Observaciones sobre la presencia de Exomalopsis pulchella Cresson, polinizador del tomate en Cuba; consecuencias para la producción de semillas
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
Durante varias estancias en Cuba, hemos observado la actividad polinizadora de Exomalopsis pulchella sobre tomate (Lycopersicon esculentum). Las altas tasas de alogamia observadas en condiciones comparables con las de Cuba ...
Acumulación de prolina libre en plántulas de maíz y su relación con la resistencia a la sequía [Zea mays]
(Instituto Interamericano de Cooperación para la Agrícultura (IICA), 1980-04)
The rate of free proline accumulation in root apices of young corn seedlings was studied under drought conditions, in a wide renge of hybrids lines and populations. Accumulation rates encountered ranged from 3 times normal ...