Summary
The best concentrations of S. tuberosa fermentation and S. curtisii for controlling diamondback moth
(P. xylostella) of cauliflower were 25 ml and 3 ml/ L respectively under field experiment. Similarly, the contact and
anti-feedant activities of both Stemona spp. were highest against P. xylostella. They also gave high curd yield.
However, the effects of these botanical pesticides against common cut worm (S. litura) larvae could not measure
due to their absence during our study.