This research was conducted to provide information about eco-friendly and economic means to control Diamondback moth Plutella xylostella (L.) (LEPIDOPTERA: PLUTELLIDAE), one of the serious pest of cruciferous crops throughout the world. Because of its resistivity to many pesticides and the harmful effects of those pesticides to ecology an alternative means of controlling this moth is necessary. This book attempts to compare the effectiveness of several biorational compounds which are cost effective and very eco-friendly. The author targets this manuscript for all the IPM followers, farmers, researchers, extension service providers, development organizations, NGOs and INGOs.