ANTI-FUNGAL ACTIVITY OF SOME NUTRIENTS PLANTS AND TRICHODERMA HARZIANUM AGAINST F. SOLANI CAUSED DAMPING OFF DISEASE ON CANTALOUPE.

This study was initiated at the Organic Agriculture center/ Department of plant protection– Ministry of Agriculture, to assess the efficacy of some Eco-friendly materials individually or in an integration to control Fusarium rot root disease in melon caused by Fusarium solani. Results of greenhouse condition showed that combination treatment CaSiO3 + Trichoderma harzianum + FeSO4 was the best decreased disease incidence and severity to 0.00 and 0.00 % respectively compared with control (pathogen only) caused 86.67 and 77.70% respectively but not signification differences neither CaSiO3 alone and CaSiO3+ Trichoderma harzianum treatments, besides, it increased plant fresh and dry weights compared to other combinations. Results indicated that treated plant produced after 14d and 21d of poly phenol oxidase enzyme, treatment of Trichoderma harzianum + CaSiO3 + FeSO4 showed superiority in inducing poly phenol oxidase enzyme. The change in light absorbance/ min/g. Fresh weight of melon was (88.67 ,90.33) respectively, compared to control treatment (pathogenic fungus) the activity of poly phenol oxidase was (62.80, 59.33) respectively.