EFFICACY OF TRJCHODERMA SPP., AND RHIZOBIUM MELILOTI IN THE CONTROL OF ROOT ROT OF FENUGREEK

Abstract

Trichoderma viride, T. hanzation and Rhizobiunz nzeliloti used as seed dressing and or as soil drench reduced Macrophomina phaseolina infection by more than 50% on 30 day old fenugreek seedlings. Combined use of T. koningii and R. tneliloti showed better control of M. phaseolina infection on both 30 and 60 day old plants. T. harzianum, T. hamatum, T. pseudokoningii andR. nzeliloti (KUMH 555 & KUMH 653) used either as seed dressing and or as soil drench completely controlled the infection of Rhizoctonia solani both on 30 and 60 day old plants. Combined use of T. viride and T. koningii with rhizobia were also found effective. T. harzianum, T. koningii alone orR zneliloti used with T. viride, T. hanzatum, T. koningii and T. pseudokoningii completely controlled the infection of Fusariurn spp., on 30 day old seedlings, while in 60 day old plants more than 50% reduction was found by Tricizodenna spp., and R. meliloti used alone or rhizobia mixed with Trichoderma spp., when used either as seed dressing and or as soil drench. Introduction