EVALUATION OF EFFICACY OF THE BIOLOGICAL CONTROL FUNGI Trichoderma harzianum AND Trichoderma viride IN PROTECTION BLACK CUMIN SEED AND SEEDLING FROM INFECTION WITH FIELD FUNJI Fusarium solani, Fusarium lateritium AND Rhizoctonia sp. AND EFFECT ON SOME CALIBRATE GROWTH .

Abstract

The study is made to enhance the quality of the fury T.viride and T.harzianum in protection black seeds from infecting with the field fury is F.lateritium , F.solani , Rhizoctonia sp. and their effect on growing and the positive effect of T.harzianum and T.viride in improving the germination percentage , plant length and dried weight of the vegetation and root system especially for isolating the fungus T.viride if the features measure the growth by (70% , 16.16cm , 0.330g , 0.120g ) respectively in comparative with others ( 64.66% , 11.66cm , 0.123g , 0.053g) The results shown that adding biocontrol agent T. harzianum didn't gave positive results in controlling fungi pathogen F. solani , F. lateritium & Rhizoctonia sp. While adding biocontrol agent T.viride with fungi F. solani & Rhizoctonia sp. Significantly improve the plant features , but failure in control fungus F. lateritium .