Efficacy of Fungicides, Bio-organics and Plant extracts against Colletotrichum gloeosporioides and Fusarium oxysporum

摘要

Cashew is one of the important commercial crops grown in parts of India. It fetched Rs. 2,000-2,500 crores as foreign exchange from export of cashew kernels during 2004-2005. Present study therefore, was undertaken to identify the pathogen from dieback and inflorescence blight pathogen affected cashew trees and screened fungicides, bio-organics and plant extracts against Colletotrichum gloeosporioides and Fusarium oxysporum. Pathogenic symptoms appeared 10 days after inoculation. The branches and shoot showed white to pinkish growth of the fungus on the bark. Shoots started drying up from tip down wards. Symptoms of F. oxysporum were minute water soaked lesions Blighted spots enlarged in size and turned to black, whereas in F. oxysporum bavistin and tilt inhibited 100% fungal growth followed by bordeaux mixture and score treatments.