Trichoderma Harzianum in Tobacco Seedlings with the use of a Herbicide

In vitro effect of a herbicide on Trichoderma harzianum and in vivo influence on colony forming units / g soil and also, the interaction between its quantity and the root rot disease intensity caused by Rhizoctonia solani have been studied. Ohinol 50-SC (50% napropamide) was used in some doses and methods. Inhibition of dry biomass yield and radial growth increases proportionally of a dose. The highest decreases of T. harzianumquantity was in 0.2 g/m2 before +0.3 g/m2herbicide after sowing. The greater quantity reduce the disease intensity. The most suitable method of T. harzianum application in tobacco seedlings is: herbicide in a dose of 0.5 g/m2after sowing and the seed kept in pure culture of a biocontrol agent.