Influence of Aclonifen on the Growth of Rhizobium Phaseolii and the Yield of Green Beans (Phaseolus Vulgaris L.)

In this study, the degree of the negative effect of Aclonifen containing herbicide on Rhizobium phaseolii, total mesophilic bacteria (TAMB), yeast and molds (YM), the yield and correlation among parameters of bean under natural field conditions were investigated. Rhizobium phaseolii stock culture (8.71 log cfu/g), was mixed with the media in pots homogenously at a dose of 0, 1 and 2 g. When the young bean plants reached the 5-6 true leaf stage 600 g/l Aclonifen containing Challenge 600, was applied as a herbicide at the dose of 0, 625, 1250, 1875 and 2500 ml/ha, respectively. The effect of the Rhizobium and herbicide treatments on Rhizobium phaseolii, TAMB, YM and the bean yield were tested. The results obtained from the trial revealed that the number of Rhizobium bacteria, TAMB, YM and also the yield were reduced by the increased herbicide dose. The number of TAMB and YM were not affected by Rhizobium treatments but yield was.