Apparent recovery of surface applied nitrogen fertilizer by a coastcross pasture.

AUTOR(ES)

PRIMAVESI, A. C.

FONTE

INTERNATIONAL GRASSLAND CONGRESS

DATA DE PUBLICAÇÃO

2011

RESUMO

Nitrogen recoveries from fivel levels of urea and ammonium nitrate surface-applied on coastcross pasture, grown on a dark red lotosol (Hapludox), in Sao Carlos, SP, Brazil under tropical altitude climate, were estimated. Significant differences occurred within periods (P<0.05), depending on climatic conditions. Under adequate plant growth conditions, mean N recovery from urea was about 67%, sometimes reaching 80% of that from ammonium nitrate. Recovery of ammonium nitrate varied from 45 to 68% of applied N.

ASSUNTO(S)

ammonium nitrate cybodon dactylon cv coastcross pasture recovery urea

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