A field experiment was conducted at College of Agriculture, Navile, Shivamogga, University of Agricultural Sciences, Bengaluru during kharif 2010 to study the diversity and dynamics of weeds as influenced by clethodim in soybean (Glycine max L.) and its residual effect on succeeding crop. The experiment was laid out in randomized complete block design with three replications. Clethodim 24% EC @ 60 g a. i./ha along with NIS+AMS reported lower number of weeds as well as reduced the weed dry weight significantly as compared to all other treatments except application of clethodim 24% EC @ 48 g a. i./ha along non-ionic surfactant (NIS)+ammonium sulfate (AMS). The weed control treatments did not show any observable phytotoxicity symptoms on soybean as well as the succeeding greengram crop.