Population trend in Brevipalpus phoenicis on Ashwagandha in relation to weather factors in Varanasi

Abstract

The population in Brevipalpus phoenicis (Geij.) on Ashwagandha, Withania somnifera Dunal. (medicinal plant) was observed from January to December during the years 1994 and 1995 at medicinal plants gardens in Varanasi. The population was seen throughout the year. The population started increasing from April and reached its peak during summer. Minimum population of mite was recorded in November in 1994 and in December in 1995.