Ácido giberélico no crescimento inicial de mudas de pessegueiro

Abstract

The use of some cultures practices are important for obtain quality seedlings with lowest time production. The work was carried out in a green house, at Viçosa Federal University, Plant Science Department, with the objective to evaluate the effect of five acid giberellic (GA3) concentrations (0; 50; 100; 150 e 200 mg L-1), on the initial growth of peach seedlings. The experiment was done as randomized blocks design, with four replications, where each plot constituted of four plastics recipients. Three GA3 applications were realized (60, 80 and 100 cultivate days). The applications were done at the plants aerial part, using 20 ml of solution for each plant. After 130 days of the sowing, the height and root length, diameter of the stem, number of primary ramifications of the aerial part and mass of the dry matter aerial part and of the dry root, were evaluated. It was concluded that the gibberellic acid application has influence on the growth of peach seedlings, manly the dose of 200 mg L-1. The GA3 application hasn't affect the stem diameter.