Avaliação do rendimento forrageiro da soja em quatro sistemas de corte, sucedida por milheto ou milho

Abstract

Aiming to avaluate the forage yield of soybean, succeeded by millet or corn, experiments were conducted in field at the Universidade Federal de Lavras, UFLA, Lavras, MG, in the years 1997/1998 and 1998/1999. To analyze the behavior of those crops, the experimental randomized block design with three replicates in a factorial scheme. The soybean crop was evaluated at four cutting seasons [60 days for forage + regrowth for rolao (straw + grain), cuts at 60 and 100 days for forage, single cut for forage at 100 days and exclusive production of rolao]; 2 cultivars, Cristalina and Doko and, and 2 successions, millet and corn. For the analysis of the data obtained from the cultivation of soybean, and successions, dry matter and crude protein yields were utilized. The comparison between soybean four cutting seasons and its successions, for the dry matter stood out the superiority for forage at 100 days, by utilizing the cultivar Doko or Cristalina and corn in succession. For crude protein yield.the best was obtained with the cutting system at 60 days for forage + regrowth for rolao, by utilizing the cultivar Doko and corn in succession.