Efeito de vinhaça e acibenzolar-s-metil na biota do solo e desenvolvimento do milho.

Abstract

The effect on soil biota and maize (Zea mays) development of stillage added isolated or associated with acibenzolar-s-metyl application on plant shoots was evaluated under greenhouse. The stillage was applied in naturally infested soil at rates of 0 (control), 100, 200 and 300 m3 ha-1. Seven days old maize seedlings, grown in sterilized soil, were treated with acibenzolar-s-metyl at rate of 0 and 0.5 mg mL-1 of active ingredient in water. Two days after inductor application, seedlings were transplanted to stilage treated infested soil and the experiment set up in a completely randomize design with five replications. Evaluations were carried out 60 days after planting through plant development and nematodes density rates. The results indicated that stillage application increased shoots development and decreased population density of Pratylenchus sp., Meloidogyne sp. e Rotylenchulus sp., significantly. Acibenzolar-s-metyl did not affect plant biomass neither nematodes population densities.