BIOLOGICAL CONTROL OF Corynespora cassicola AND Drechslera tritici-repentis

Chemical control is the most widely used method for disease management in significant crops such as soybeans and wheat. However, a few years biological has gained prominence. Thus, we evaluated antagonism of bacteria Pseudomonas fluorencens, Pantoea aglomerans, Bacillus sp. on phytopathogens Corynespora cassiicola Drechslera tritici-repentis, previously isolated from soybean wheat leaves, respectively. The experiments were carried out under controlled conditions at Phytobacteriology Laboratory Faculty Agronomy Veterinary Medicine (FAVM), University Passo Fundo (UPF), Rio Grande do Sul, Brazil. treatments were: T1: P. Fluorencens + pathogen; T2: aglomerans T3: spp. pathogen, T4: pathogen (control). In each experiment (C. D. tritici-repentis), completely randomized design with six replications was used. data submitted to linear regression analysis, obtaining daily increase rate (slope). final time ANOVA, means compared by Tukey test (P < 0.05). fluorescens, agglomerans, reduced mycelial growth 74 87% C. Although this study vitro conditions, it can serve basis other studies, especially about leaf spots caused field conditions.