Compatibility of fungicides with Trichoderma asperelloides and Azospirillum brasilense

The use of fungicides to control agricultural diseases has been increasing in agriculture. Thus, the biological using fungus is an effective tool integrated management. This study aimed evaluate compatibility Certeza, Apron and Vitavax on microorganisms Trichoderma asperelloides Azospirillum brasilense. experiments were conducted vitro a completely randomized design with factorial arrangement 2 x 3 three replications. first factor composed two doses second referred fungicides. developed PDA medium. After medium solidified, flow layer 10 µL fungal solution was added each plate aid automatic pipette (D1, recommended dose; D2, double dose). Then, Petri centrally inoculated disc asperelloides, addition uninoculated control. For brasilense, colony surface scraped sterilized Drigalsky loop. filter discs paper dipped placed surface. this process, plates incubated BOD (Biochemical Oxygen Demand) at 26±2ºC photoperiod 12 h. parameters evaluated mycelial growth sporulation. results showed that there no significant interaction between factors. Certeza (Tiofanato metílico + Fluazinam), (Fludioxonil Metalaxil-M) (Carboxina Tiram) are considered compatible can be used disease management practices, priority must given products have shown less harmful.