Efficacy Of Non-Systemic And Systemic Fungicides Against Purple Blotch Of Onion (Allium Cepa L.) Caused By Alternaria Porri (Ellis) Cif

Onion is one of the most important commercial vegetable crops of India. The crop is subjected to attack by a number of diseases, of which purple blotch caused by Alternaria porri (Elis.) cif. has been most serious and also a major limiting factor in cultivation of onion causing major economic losses to the farmer. Several and excess of fungicides are being used for the management of this disease that results in economic burden and less than satisfactory results as well as residual problems. In this context, a study was undertaken to evaluate the efficacy of few systemic and non-systemic fungicides against A. porri causing purple blotch of onion (Allium cepa L.) under in vitro conditions.