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Oil palm fertilization in Brazilian Central Amazonia.

dc.creatorRodriguez, M. R. L. 42516, autor. aut
dc.creatorChaillard, H. 42517.
dc.creatorMalavolta, E. 42518.
dc.date©1997
dc.descriptionThe effect of N, P, K and Mg fertilizers on oil palm growth and yields was studied from 1984 to 1990 on a latosol in the Manaus region, Brazil. Three fertilizer regimes were compared in the case of P, K and Mg but only 2 in the case of N. The fertilizers were applied at rates which increased in steps as plants aged. Increasing P rates significantly improved NP nutrition, oil palm development (up to 6 years) and yields (from 4 to 7 years). A modest P rate (50 kg/ha annually) rapidly corrected P deficiency without inducing a marked K deficiency. In the absence of K fertilizer application, K contents gradually fell to very low levels, from the age of 6 years (1989), though without any effect on palm yields in 1990.
dc.descriptionIncluye 9 referencias bibliográficas.
dc.descriptionThe effect of N, P, K and Mg fertilizers on oil palm growth and yields was studied from 1984 to 1990 on a latosol in the Manaus region, Brazil. Three fertilizer regimes were compared in the case of P, K and Mg but only 2 in the case of N. The fertilizers were applied at rates which increased in steps as plants aged. Increasing P rates significantly improved NP nutrition, oil palm development (up to 6 years) and yields (from 4 to 7 years). A modest P rate (50 kg/ha annually) rapidly corrected P deficiency without inducing a marked K deficiency. In the absence of K fertilizer application, K contents gradually fell to very low levels, from the age of 6 years (1989), though without any effect on palm yields in 1990.
dc.languageng
dc.publisher
dc.relation
dc.subjectAmazonas
dc.subjectBrazil
dc.subjectdeficiency
dc.subjectmagnesium
dc.subjectnitrogen
dc.subjectNPK fertilizers
dc.subjectoil palms
dc.subjectoilseed plants
dc.subjectphosphorus
dc.subjectplant nutrition
dc.subjectpotassium
dc.subjecttropical crops
dc.subjectScarcity
dc.subjectMagnesium
dc.subjectNitrogen
dc.subjectNitrogen
dc.subjectOilseed plants
dc.subjectPhosphorus
dc.subjectPlants
dc.subjectPlants
dc.subjectPotassium
dc.subjectTropical crops
dc.subjectFood.
dc.titleOil palm fertilization in Brazilian Central Amazonia.
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