Uptake and distribution of macronutrients in trees of Coffea arabica L. in Kenya as affected by seasonal climatic differences and the presence of fruits
Arboles de café nuevos y árboles en producción se arrancaron a intervalos de 2-3 meses durante más de un año. Cada uno se dividió en 10 partes y se secaron, pesaron y analizaron para N, P, K, Ca y Mg. Presentan importantes resultados sobre cambios estacionales de contenido de materia seca y de composición mineral. (Boletín Técnico - CENICAFE no.5:855. 1977)ively rapid over the cool, dry season 1967 (June-September), when the roots < 1 mm diameter grew rapidly, and during the subsequent Short Rains, but was slow during the hot, dry season 1968 (December-March) when the surface 2-3 ft of soil dried out. The concentration of P in the trees changed accordingly, especially in the branches. The flower buds took 39 of the small total _-uptake during the hot, dry season 1968. Trees bearing a light or moderate crop of fruits absorbed all the minerals determined more rapidly than deblossomed trees. The fruits on heavily fruiting trees took 89,95,98 and 99 of the net current increment in Mg,K, organic-N and P, respectively, but only 39 of the Ca. All leaves on the fruiting trees became rich in Ca, and most of their woody parts were depleted of P. Mineral uptake in a coffee plantation is compare with that in plantations of other woody perennial crops, and some practical implications are noted in relation to soil and plant factors affecting the
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| Format: | biblioteca |
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Jul
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| Subjects: | COFFEA ARABICA, TRANSPORTE DE NUTRIENTES, ESTACIONES DEL AÑO, PERIODICIDAD, ANATOMIA DE LA PLANTA, KENIA, ABSORCION DE SUBSTANCIAS NUTRITIVAS, FRUCTIFICACION, |
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