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Baseline soil characteristics of a humid tropical silvopastoral system and changes in selected soil properties
(IICA, San José (Costa Rica), 1993-01)
We established fast-growing leguminous trees (Erythrina berteroana Urban) in native grass pastures in Costa Rica's Atlantic region to determine the effects of tree pruning and cattle grazing on soil phosphorus availability ...
The effect various methods of land preparation on soil resistence to penetration and yield of corn (Zea mays L.), cassava (Manihot esculenta Crantz) ans sweet potato (Ipomoea batatas L.) in association. II. Effect on yield
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1985-10)
The effect of various of methods of land preparation on soil resistence to penetration and yields of corn (Zea mays L.) cassava (Manihot esculenta Crantz) and sweet potato (Ipomoea batatas L.) in association. I. Effect of croping systems and land preparation on the soil
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1985-10)
La resistencia del suelo a la penetración se midió cuando un suelo Typic Dystropept fue arado durante la estación seca (abril 1975) y la estación húmeda (junio), utilizando un tractor de oruga Caterpillar D4 de 60 kW (75 ...