R.D. Timila
Plant Pathology Division, Nepal Agriculture Research Council, Khumaltar, Lalitpur, Nepal

DOI

ABSTRACT

Among several diseases, Downy mildew caused by Peronospora destructor is a devastating one on onion crop. At the end of the year 1999 and in the beginning of 2000, this disease was appeared to be destructive in the farmers' field of different locations of Nepal in different varieties. Conducted survey and the information given by the farmers showed 5 percent to 90 percent disease severity in the field with 100 percent crop loss in some of the pockets. This is the first report of downy mildew occurrence in Nepal.