Hints for the management of rapeseed & mustard diseases

摘要

Diseases like Alternaria blight, white rust, downy mildew and phyllody are recurrent problems in rapeseed & mustard crops and cause annually 13-70 percent yield loss depending on the prevailing weather conditions. conditions. Rapeseed-mustard cropscomprising toria, brown and yellow sarson (Brassica campestris), gobhi sarson (B. napus), raya (B. juncea), African sarson (B. carinata) and taramira (Eruca sativa) contribute towards nearly 32 percent of oilseeds production in the country. According tothe new policy on crop diversification, area under these crops may be expanded from 0.9 lakh ha to 1.9 lakh ha. Emphasis should be given on different oilseeds crops according to regional requirements i.e. gobhi sarson in Amritsar, Jalandhar, Kapurthala and Ludhiana Distt., raya in south western region of Punjab and soyabean in central Distts. of Punjab. There is an immediate need to divert more area from wheat to rapeseed-mustard. Diseases like Alternaria blight, white rust, downy mildew and phyllody are recurrent problems in these crops and causing annually 13-70 percent yield loss depending on the prevailing weather conditions. A brief account of important diseases of rapeseed-mustard with their management strategies are briefly discussed here.