%0 Journal Article
%T Produ  o anual e qualidade de pastagem de Brachiaria decumbens diferida e estrat¨¦gias de aduba  o nitrogenada = Annual production and quality of Brachiaria decumbens pastures deferred and strategies nitrogen fertilization
%A F¨¢bio Andrade Teixeira
%A Paulo Bonomo
%A Aureliano Jos¨¦ Vieira Pires
%A Fabiano Ferreira da Silva
%J Acta Scientiarum : Animal Sciences
%D 2011
%I 
%X O objetivo deste trabalho foi avaliar a produ  o de Brachiaria decumbens diferidos por per¨ªodos de 95 e 140 dias. Foram realizados dois ensaios experimentais (95 e 140 dias) e em cada ensaio foram estudadas quatro estrat¨¦gias de aduba  o no in¨ªcio e no final do ver o(0-0, 100-0, 50-50, 0-100 kg ha-1 de N), respectivamente, com quatro repeti  es. A maior (p < 0,05) produ  o anual de mat¨¦ria seca (MS) foi verificada para a estrat¨¦gia de aduba  o com 100 kg ha-1 de N aplicados no in¨ªcio do ver o (100-0), nos pastos diferidos com 95 dias. Entretanto, no outono, inverno e primavera, a estrat¨¦gia de aplica  o de 100 kg ha-1 de N no final do ver o (0-100), proporcionou maiores (p < 0,05) produ  es de forragem. A produ  o di¨¢ria de mat¨¦ria seca, quando comparada ao ver o, sofreu redu  es de 8, 89 e58% para as esta  es outono, inverno e primavera, respectivamente, no ensaio de 95 dias de diferimento. Pode-se inferir que a estrat¨¦gia de aplica  o de 100 kg ha-1 no final do ver o ¨¦ uma estrat¨¦gia adequada para aumentar a produ  o de mat¨¦ria seca para os pastos avaliadosnos dois per¨ªodos de diferimento estudados, reduzindo a curva de sazonalidade da produ  o anual de forragem. The aim of this work was to evaluate the production of Brachiaria decumbens deferred for periods of 95 and 140 days. Two experimental trials (95 and 140 days) were carried out and, in each one, four fertilization strategies were studied at the beginning and end of summer (0-0, 100-0, 50-50, 0-100 kg ha-1 of N), respectively, with four replications. The highest (p < 0.05) annual production of drymatter (DM) was verified for the fertilization strategy with 100 kg ha-1 of N applied in early summer (100-0), in pastures deferred for 95 days. However, in autumn, winter and spring, the application strategy of 100 kg ha-1 of N at end of summer (0-100) had greater (p < 0.05) forage production. Daily dry matter production, when compared to that of summer, was reduced by 8, 89 and 58% for autumn, winter and spring, respectively, in the 95-day deferring trial. It can be inferred that the strategy of application of 100 kg ha-1 in late summer is an appropriate strategy to increase dry matter production for grasses in the two studied deferral periods, reducing the curve of seasonal annual forage production.
%K aduba  o nitrogenada
%K diferimento
%K mat¨¦ria seca
%K prote¨ªna brutanitrogen fertilizer
%K defferring
%K dry matter
%K crud protein
%U http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10194/p10194