This study was conduced to investigate whether the tomato (Lycopersicon esculentum) leaf diseases may be affected by the induction of resistance provided by the application of Bacillus subtilis, soil and leaf and foliar application of Acibenzolar-S-Methyl. In order to investigate the mode of action involved in the control was measured the peroxidases activity in the leaf of tomato treated with inducers biotic and abiotic. To evaluate the severity of foliar diseases has been estimated the number of leaf of tomatoes with symptoms of disease and determinate the percent of disease leaf in the total of leaf per plant. The significant increase in levels of peroxidase activity in plants exposed to treatment with inducers and lack of control of leaf diseases, in direct spray of B. subtilis in the leaves, are evidence that suggest that the mechanism of control diseases in question is related to induction resistance.
Biological control; Lycopersicon esculentum; rhizobacteria
