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ADAPTABILIDADE E ESTABILIDADE DE CULTIVARES DE MILHO DESTINADOS À SILAGEM EM BACIAS LEITEIRAS DO ESTADO DE GOIÁS

2007; Postgraduate Institute of Agriculture; Volume: 37; Issue: 1 Linguagem: Inglês

10.5216/pat.v37i1.1864

1016-1422

Jackson Silva e Oliveira, Fausto Souza Sobrinho, Fernando Alvarenga Reis, Gerson Augusto da Silva, Sebastião Nunes da Rosa Filho, José Junio Rodrigues de Souza, Francisco da Mota Moreira, Josimar Alberto Pereira, Waldivino Gomes Firmino,

Genetics and Plant Breeding

During the dry season the amount of forage in pastures become insufficient and additional roughage is made necessary. Corn silage is one of the best options for supplementing roughage in this period. The objective of this research was to verify, in three regions of Goias State, Brazil, the productive behavior of some silage corn hybrids. Nine corn hybrids from different seed producing companies were evaluated. The trials were carried out in two consecutive years (2002/2003 and 2003/2004 growing seasons) in Morrinhos, Ipameri, and Senador Canedo dairy regions. The randomized block design with three replications and a plot with two lines 8.0m long was used in all trials. Significant differences were observed between treatments for most of the regions regarding dry matter productivity and silage milk production potential. The marked hybrid x region interaction for both traits evidences that hybrid recommendation must be based on local recommendation. Altogether, Valent and Tork hybrids showed the most stable behavior as related to silage potential for milk production. KEY-WORDS: Roughage; supplementation; Zea mays.