Isolation, purification and management of Alternaria brassicae through cow by product in vitro

Abstract

Background: Alternaria blight of mustard caused by Alternaria brassicae and Alternaria brassicicola is most widespread and destructive disease of rapeseed-mustard causing major yield losses that may range from 15 to 71 per cent in productivity and 14 to 36 per cent in oil content. Therefore, in the present investigation, our main emphasis was to find out some new cow by product for management of Alternaria leaf spot of mustard. Method: Cow by products like cow dung, cow urine, butter milk and panchgavaya were tested at three concentrations viz., 5, 10 and 15 per cent against A. brassicae under in vitro conditions. Results: Inhibition of mycelial growth of A. brassicae was highest by panchgavaya followed by coe urine in in vitro conditions.