%0 Journal Article
%T Sistemas de cultivo e uso de diferentes adubos na produ  o de silagem e gr os de milho = Culture systems and use of different fertilizers in the production of corn silage and grains.
%A Gustavo Castoldi
%A M£¿nica Sarolli Silva de Mendon£¿a Costa
%A Luiz Antonio de Mendon£¿a Costa
%A La¨¦rcio Augusto Pivetta
%J Acta Scientiarum : Agronomy
%D 2011
%I 
%X O presente trabalho teve por objetivo avaliar o desempenho do milho para produ  o de silagem e gr os, cultivado em diferentes sistemas e aduba  es. O delineamento experimental adotado foi de blocos inteiramente casualizados, em esquema fatorial 2 x 3, composto por dois sistemas de cultivo (sucess o e rota  o de culturas) e tr¨ºs fontes de aduba  o (organica, mineral e organomineral), com quatro repeti  es. Para produ  o de silagem de planta inteira, os sistemas e as aduba  es n o diferiram estatisticamente entre si (p < 0,05). Para produ  o de silagem de gr o ¨²mido, o sistema em sucess o e a aduba  omineral mostraram-se superiores aos demais, produzindo 10.823 e 10.815 kg ha-1, respectivamente, n o incrementando, contudo, qualidade ¨¤ silagem. J¨¢ na colheita dos gr os, o sistema em sucess o produziu em m¨¦dia 6.820 kg ha-1 e foi superior ao sistema em rota  o. A aduba  o mineral foi superior ¨¤s demais, produzindo em m¨¦dia 7.277 kg ha-1, contudo apresentou 54,62% de plantas acamadas, fato este que resultaria em perdas significativas na produtividade, caso a colheita tivesse sido mecanizada. The aim of this research was to evaluate the performance of the corn crop for silage and grain production, cultivated under different culture systems and fertilizations. The experiment was performed using a completely randomized design in a factorial scheme. The factors were two culture systems (no-tillage with crop succession andno-tillage with crop rotation) and three sources of fertilization (organic, mineral and organic-mineral), with four repetitions, totaling 24 plots. The results of production of fullplant ensilage in the systems as well as in the fertilization did not differ statistically. The results of humid grain production in the system in succession and in mineral fertilization were superior than the others treatments, producing 10,823 and 10,815 kg ha-1, respectively; however, they did not increase ensilage quality. Regarding the grain harvest, the system in succession produced 6,820 kg ha-1 on average, and was superior to the crop rotation system. The results of mineral fertilization were superior to the organic and the organic-mineralfertilizations, producing on average 7,277 kg ha-1; however, that system featured 54.62% of damped-off plants, which could have resulted in significant yield lost had the harvest been mechanized.
%K sistema plantio direto
%K rota  o de culturas
%K aduba  o organica
%K no-tillage
%K crop rotation
%K organic fertilization
%U http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/766/766