Purple blotch of onion and its management: A review

Abstract

Onion (Allium cepa) is an important crop grown throughout the world. This crop is attacked by many pathogens. Among them fungal pathogens are important limiting factor in the yield and quality of the crop. The present review is mainly focus on Purple blotch diseases of onion and their management. The antagonistic effect of various bioagents and antifungal activity of different plant extracts has been studied to control fungal diseases of onion. The present review paper deals with various approaches of Purple blotch of onion such as morphological and cultural characteristics, interaction between host and pathogen, histopathology, epidemiology seed pathology, yield losses and control measures.