Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/12611
Título: Soil phosphorus dynamics and availability and irrigated coffee yield
Título(s) alternativo(s): Dinâmica e disponibilidade de fósforo no solo e produtividade do cafeeiro irrigado
Palavras-chave: Phosphorus fractionation
Phosphate fertilization
Solo - Fertilização
Soil - Fertilization
Fracionamento de fósforo
Adubação fosfatada
Data do documento: Mar-2011
Editor: Sociedade Brasileira de Ciência do Solo
Citação: REIS, T. H. P. et al. Soil phosphorus dynamics and availability and irrigated coffee yield. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 35, n. 2, p. 503-512, Mar./Apr. 2011.
Resumo: Research data have demonstrated that the P demand of coffee (Coffea arabica L.) is similar to that of short-cycle crops. In this context, the objective of this study was to evaluate the influence of annual P fertilization on the soil P status by the quantification of labile, moderately labile, low-labile, and total P fractions, associating them to coffee yield. The experiment was installed in a typical dystrophic Red Latosol (Oxisol) cultivated with irrigated coffee annually fertilized with triple superphosphate at rates of 0, 50, 100, 200, and 400 kg ha-1 P2O5. Phosphorus fractions were determined in two soil layers: 0-10 and 10-20 cm. The P leaf contents and coffee yield in 2008 were also evaluated. The irrigated coffee responded to phosphate fertilization in the production phase with gains of up to 138 % in coffee yield by the application of 400 kg ha-1 P2O5. Coffee leaf P contents increased with P applications and stabilized around 1.98 g kg-1, at rates of 270 kg ha-1 P2O5 and higher. Soil P application caused, in general, an increase in bioavailable P fractions, which constitute the main soil P reservoir.
URI: http://repositorio.ufla.br/jspui/handle/1/12611
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