Anti Phytoviral Activities of Gunapaselam, On Tobacco Necrotic Virus (Tnv) Affecting Cyamopsis Tetragonoloba L (Taub)

Abstract

Tobacco Necrotic Virus (TNV) is a plant disease affecting most of the legumes and other vegetable crops. The primary symptom being abnormal coloring or necrotic tissue in the leaves. Currently only chemical control of the virus is possible. There are, however, cultural management options to reduce the risk of the virus. The ‘ABC’ of TNV is (A) refers to dark brown raised patches, (B) dark sunken lesions (C) light brown cracked patches. Gunapaselam is a plant tonic made with fish extracts along with jaggery .Serial dilutions of the Fish Tonic ranging from1, 10,100 to 1000µl were applied to the host plant Cyamopsis tetragonoloba (Cluster Bean).The promising levels being 100 µl.Gunapaselam was applied as a liquid foliar spray.