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Growth of laurel (Cordia alliodora) in coffee and cacao plantations and pastures in the atlantic region of Costa Rica
(CATIE, Turrialba (Costa Rica), 1979)
A system of milk production for small farmers
(CATIE, Turrialba (Costa Rica), 1979)
The socioeconomic and biologic basis for the development of a prototype of a milk production system for the tropics is given. The system takes into account the resources and constraints that are characteristic of the small ...
Papel del fósforo y del cobre sobre el crecimiento y composición del café Arábica cultivado en arena
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1978-04)
Non-flowering two-year old Coffea arabica L. (cv.'S.L 34') plants were grown in sand culture and treated with varying combinations of copper and phosphorus. Increases in the number of leaves and flower buds were observed ...
Agua del suelo y aereación en la producción de frijol rojo. 1 Succión máxima media de humedad del suelo
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1978-01)
Grain and aerial dry matter production and the number of pods per plant were found to be maximum in the '27-R' cultivar of Phaseolus vulgaris L, a red bean grown in the tropics, when the maximum soil moisture suction was ...
Efectos de los macronutrimentos en el crecimiento y acumulación de materia seca en marañón (Anacardium occidentale L.)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1978-04)
In a sand culture experiment the effects of varying concentrations of N, P, K, Ca, Mg and S on the growth of cashew were investigated. Both deficiencies and excesses of the nutrients depressed the rate of growth and dry ...
Compatibilidad de la yuca con cuatro especies silvestres de Manihot de Brasil Central
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1978-01)
Hybridizations between cassava (Yuca), Manibol esculenta Crantz, and the wild species, M anomala Pohl, M. oligantha Pax subsp nesteli, M. gracilis Pax, and M. zehutneri Ule were fertile. Meiosis of the four species was ...
Efecto de los antitranspirantes sobre el crecimiento y producción del sorgo de grano
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1979-01)
Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, India during the summer and monsoon seasons of 1977 on grain sorghum (CSH 5) under the conditions of limited water supply. The results ...
Efectos de los nemátodos de quistes sobre las relaciones de agua de dos variedades de papa
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1979-01)
Studies have been made under controlled conditions of two potato varieties ‘Maris Piper and ‘Pentland Dell’ (ten weeks old) in small pots with soil infested with three levels of potato cyst-nematode, Globodera rostochiensis ...
Correlación de caracteres de la copa y de tasas de crecimiento en bosques de Puerto Rico
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1979-01)
Crown diameter, crown depth, crown area, crown volume, tree dbh and tree height measured in 1975 were found to correlate in several instances with previous periodic annual diameter increment through linear regressions in ...
La "Vapona" afecta el color de un lepidóptero
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1979-01)
El color de un esfingido se encontró que cambiaba cuando estaba expuesto a emanaciones de 'Vapona'.