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Screening of leguminous trees for alley cropping on acid soils of the humid tropics Gliricidia sepium (Jacq.) Walp.: Management and improvement. Proceedings

by Brewbaker, J.L; (eds.); SALAZAR, A; CHERYL, A.P; Withington, D; Glover, N; Nitrogen Fixing Tree Association, Hawaii (EUA); CATIE, Turrialba (Costa Rica).
Series: Special Publication.Publisher: Honolulu, Hawaii (EUA), NFTA, 1987 Description: p.61-67.Subject(s): CULTIVO EN FAJAS | EVALUACION | SILVICULTURA | SUELOS | ABONOS | ESPACIAMIENTOS | RENDIMIENTO | GLIRICIDIA SEPIUM | LEUCAENA LEUCOCEPHALA | INGA | ERYTHRINA | LEGUMINOSAE | EVALUATION | SILVICULTURE | FERTILIZERS | YIELDS | GLIRICIDIA SEPIUM | LEUCAENA LEUCOCEPHALA | INGA | ERYTHRINA | LEGUMINOSAE | EVALUATION | SYLVICULTURE | ENGRAIS | RENDEMENT | GLIRICIDIA SEPIUM | LEUCAENA LEUCOCEPHALA | INGA | ERYTHRINA | LEGUMINOSAE In: Summary: Several factors need to be taken into account when selecting the appropriate tree for an alley cropping system. Some of these factors pertain to the environment and general adaptation to the climate and soils. Other factors are specific to characteristics of the trees, such as biomass production, response to pruning, rates of decomposition, and rooting patterns. Preliminary results on screening for species for alley cropping on acid soils are presented. Specific studies on decomposition and nitrogen mineralization and rooting patterns are described. In general, species native to the region perform better in terms of survival and biomass production than exotic species. Decomposition and nitrogen mineralization are greatly affected by leaf quality. This is important and should be taken into account for timing pruning applications to coincide with crop uptake patterns. Competition from the roots of the hedgerow can drastically reduce crop yields. The distribution patterns of tree roots should be determined for choosing appropriate alley widths.
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Several factors need to be taken into account when selecting the appropriate tree for an alley cropping system. Some of these factors pertain to the environment and general adaptation to the climate and soils. Other factors are specific to characteristics of the trees, such as biomass production, response to pruning, rates of decomposition, and rooting patterns. Preliminary results on screening for species for alley cropping on acid soils are presented. Specific studies on decomposition and nitrogen mineralization and rooting patterns are described. In general, species native to the region perform better in terms of survival and biomass production than exotic species. Decomposition and nitrogen mineralization are greatly affected by leaf quality. This is important and should be taken into account for timing pruning applications to coincide with crop uptake patterns. Competition from the roots of the hedgerow can drastically reduce crop yields. The distribution patterns of tree roots should be determined for choosing appropriate alley widths.

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