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	Provedor de dados 90 (1) Autor Kiehl,J. C. (1) Prochnow,L. I. (1) van Raij,B. (1) Palavra-chave Acidulated P fertilizers (1) Maize (1) Water-insoluble P (1) Water-soluble P (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2002 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Effect of water and citrate solubility on agronomic effectiveness of acidulated phosphates in three consecutive corn crops 90 Prochnow,L. I.; van Raij,B.; Kiehl,J. C.. In the process of phosphate rock acidulation, several impure P compounds may be formed along with the desirable Ca and NH4 phosphates. Such compounds normally reduce the content of water-soluble P and thus the agronomic effectiveness of commercial fertilizers. In order to study this problem, a greenhouse experiment consisting of three consecutive corn crops was conducted in samples of a Red-Yellow Latosol (Typical Hapludox) in a completely randomized design (6 x 2 x 2), with four replicates. Six commercial fertilizers were added to 2 kg of soil at a rate of 70 mg kg-1 P, based on the content of soluble P in neutral ammonium citrate plus water (NAC + H2O) of the fertilizers. Fertilizer application occurred either in the original form or leached to remove... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water-soluble P; Water-insoluble P; Acidulated P fertilizers; Maize. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832002000300018 Registros recuperados: 1 Primeira ... 1 ... Última

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