Effect of UV-C and P. Fluorescens on Residual Rate of Herbicide Lintur 70% WG in Soil and Wheat Seeds

Abstract

This study aimed to test the effect of two factors, biological (Bacillus cereus) and physical (UV-C) in degrading of herbicide Lintur residue on wheat plants. Pathogenicity in vitro experiments showed that Pseudomonas fluorescens is not pathogenic on wheat seeds. On the other hand, Lintur had negative effect on bacteria in solid and liquid media. As for the field experiments with regard to Lintur residual in the soil, the results showed that the highest concentration of the herbicide was 7.00 ppm in the treatment of uncultivated soil sprayed with Lintur, while the lowest concentration (below the detectable level) was in the wheat planted soil sprayed with UV-C treated Lintur in the presence of Pseudomonas fluorescens. As for the seed treatment, the highest active compound concentration was 1.90 ppm appeared in the Lintur treated seeds in the absence of other treatments, compared to the lowest residual concentration (0.00) ppm was in seeds treatment with UV-C treated Lintur.