Morfogênese e dinâmica do perfilhamento de Panicum maximum JACQ. cv. Tanzânia-I sob pastejo

Abstract

The effect of two forage residuals after grazing was evaluated as to morphogenic traits of leaves and tillers and forage structure of Panicum maximum Jacq. cv. Tanzania-I until the 35 days after defoliation, within two year seasons, summer and fall. The experimental design was a complete randomized blocks, with forage residuals in the main plots, year season in the sub-plot, and days after grazing in the sub-sub-plot, with three replications. The forage residuals did not affect the rates of appearance and lengthening of leaves in the residual tillers, and into the tillers quantity. The average number of leaf blades and new basal tillers keep a similar performance throughout the summer and autumn days. Therefore the number of new aerial tillers, during the summer, decreased as a function of days of rest being that in the fall remained more constant. In the autumn, the length of leaf blades grew linearly until the 35th resting day. Therefore in the summer the leaf blades enhanced maximum growth around 30 days.