Abstract: A variable response of crop growth, nodulation and VAM colonization to EM (effective microorganisms) application was observed when Vigna radiate (L) Wilczek was grown in farmyard manure (FYM) and Trifolium green manure (GM) amended soils with different histories of EM application. In soil 1 EM application was started six months prior to soil 2. Shoot growth was enhanced due to EM application in GM amended soil 1 but suppressed in soil 2 with either organic amendment. Root biomass was increased by EM application in FYM but reduced in GM amended soils, EM reduced pod dry biomass in soil 1 but enhanced in FYM amended soli 2. Irrespective of the soil type and organic amendment, nodulation was enhanced by EM application at vegetative growth stage. VAM colonization showed a positive response to EM application in both the soils. The response of crop growth was independent of the response of nodulation and VAM colonization to EM.