Effect of sources and rates of nitrogen on nutrients extraction in coastcross pastures.

The contents and the extraction of mineral nutrients were determined in a coastcross pastures established on a dark red lotosol (Hapludox), in Sao Carlos, SP, Brazil, under tropical altitude climate, receving five rates of urea and ammonium nitrate, applied on surface. There weredifference (P<0.05) among sources and rates of N. Nutrients extractionincreased with the nitrogen lelves. Especial high werw total N (319 and 446 kg ha) and K (341 and 467 kg ha) extraction. When forage yield was high (treatment with 500 kg of N ha) and for both fertilizers, macronutrientns extraction was greater for K and, followed by Ca, S. PandMg. Micronutrients extraction ocurred in the following decreasing order: Fe, Mn Zn and Cu.

Bibliographic Details

Main Authors:	PRIMAVESI, A. C. P. de A., PRIMAVESI, O. M. A. S. P. R., CORREA, L. de A., CANTARELLA, H., SILVA, A. G. da, FREITAS, A. R. de
Other Authors:	ANA CANDIDA PACHECO DE A PRIMAVESI, CPPSE; ODO MARIA ARTUR S P R PRIMAVESI, CPPSE; LUCIANO DE ALMEIDA CORREA, CPPSE; H. CANTARELLA, IAC; ALIOMAR GABRIEL DA SILVA, CPPSE; ALFREDO RIBEIRO DE FREITAS, CPPSE.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2001-02-19
Subjects:	Mineral extraction cynodon dactlon cv, Surface application, Extracao mineral, Coastcross, Aplicacao de superficie, Nitrato de amonia, ammonium nitrate, urea,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/45255
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