Abstract
Platanus branch wilt was studied in Ninavha forest where the fungus Hendersonula toruloidea Nattrass was regarded as potential pathogen. According to young shoot cutting bioassay technique of H.toruloidea culture filtrate. It was clear that culture filtrate caused shoot
cutting wilt after few days of treatment Four fungicides( Atmy Benlate Daconil &Mancozeb) were used to control the disease . All the fungicides caused significant inhibition to mycelium growth at 100mg/L ,and reduce significantly to canker development where the canker was 5.6 cm after using ِAtmy and 7.4,6.8cm Daconil and Mancozeb treatment respectively ,while Benlate treatment showed the lowest effect with 9.3cm. Increasing irrigation intervals showed significant effect on artificial infection percentage and the best irrigation intervals was 12 hours. The infection percentage was positively correlated with reducing of Irrigation intervals and that had an effect on the studied phenomenon
