استعمال عزلتين من الفطر Alternaria alternata كعامل مقاومة إحيائية ضد مرض البياض الدقيقي على القرع المتسبب عن الفطر podosphaera xanthii في البيوت المحمية

Abstract EN

Carry out several experiments for estimation active isolations fungi Alternaria alternata on powdery mildew diseases after isolated A .alternata naturally from leaves squash infected by powdery mildew in cultivation covered (tunnel) where see black to grey mass over powdery mildew diseases after classification according to taxonomic key for genus fungi Alternaria spp through shown result found high influence for isolation on growth and sporulation powdery mildew diseases on squash as well as influence on conidiophores where spread squash plant infected by powdery mildew suspended fungi A.

alternata was great influence on sporulation as well as number of conidiophores