In vitro evaluation of acaricidal activity of different plant extracts against Rhipicephalus (Boophilus) microplus

Ticks and tick born diseases affect the economics of dairy farm animals. Continuous use acaricides leads to development acaricide resistance in population, order overcome resistance, newer alternatives like herbal extracts can be used as acaricides. The following study is designed evaluate acaricidal efficacy Azadirachta indica, Calotropis gigantea Ricinus communis against R. (Boophilus) microplus tick. Aqueous plant were prepared from dried material these evaluated using two different bioassays adult immersion test larval packet test. At 80 mg/ml concentration A. indica showed lowest LC50 LC99 values when compared C. gigantea. In conclusion relatively more efficient activity than followed by