Effect of combined treatments of microorganisms more fungicide on seeds peanuts

Abstract

1

 

Control of diseases associated with peanut seeds is usually carried out by chemical fungicides. However, these treatments are inefficient and their indiscriminate use represents a risk for the sustainability of the production system. The objective of this work was to evaluate the effect of the combined application of microorganisms (Bacillus subtilis, Trichoderma harzianum, Pseudomona putida) plus fungicide as a pre-sowing practice in peanuts. The field trials were at the FCA UNC Peanut Module according to the normal management to obtain marketable grain. The following treatments were sown: Control, Fungicide, B. subtilis, T. harzianum, P. putida and their respective combinations with fungicide. The variables evaluated were: Emergence of plants in the field at 15 and 30 days from sowing, Initial growth, Yield in pod and grain and Grain Quality. The design was in complete random blocks, with four repetitions. The data were subjected to analysis of variance and the mean values compared by Tukey's test (p ≤ 0.05). According to the results, the combined application of biologicals plus fungicide increased the emergence and growth of the plants at 30 days from sowing. At the end of the cycle (165 days), higher grain and pod yields were recorded, without modifying their grain quality. The additive effect of microorganisms plus fungicide due to its high compatibility allowed the control of pathogens and favored the formation of pods and grains, increasing yields.