Bull. Fac. Agric., Cairo Univ., 58 (2007):218-222

BIOLOGICAL CONTROL OF CUCUMBER DAMPING–OFF CAUSED

BY Pythium aphanidermatum

N. S. AL-AMEIRI

Seven treatments were applied to soil in a greenhouse to control cucumber damping – off. Trichoderma harzianum was used in four of them T.harzianum preparations applied to soils infested with Pythium aphanidermatum (natural and artificial) decreased disease incidence, severity and increased shoot dry weight. Mycelium and mycelial preparation appear to be more effective than conidia and conidial preparation. The mycelial preparation was the best in controlling the disease