تأثير راشح الفطرين Trichoderma viride و Trichoderma harzianum في Schizaphis graminum النسبة المئوية لهلاك حوريات و كاملات حشرة من الحنطة rondani (aphididae : homoptera) مختبريا

The results should that 100% concentration of Trichoderma harzianum exudates had a higher mortality effect on nymphs and adults of aphid it reached 57.26% , 44.79% respectively . the mortality rate was higher in third day 48.37% compared with first day 32.06% . in pots the mortality rate 53.38% , 51.62% respectively . the exudates of Trichoderma viride in vitro had mortality rate 55.95% ,45.64% on nymphs and adults of aphid respectively in 100% concentration . the mortality rate after three days was 46.76% compared with first day 31.89% . at pots the mortality rate reach 44.86 ,43.59% respectively .