Introduction to physico-chemical properties of pesticides in relation to their usage, activities, interaction with living systems, toxicity, selectivity and resistance. Use of biological agents as pesticides. Formulations and roles of surfactants/adjuv(Introduction to physico-chemical properties of pesticides in relation to their usage, activities, interaction with living systems, toxicity, selectivity and resistance. Use of biological agents as pesticides. Formulations and roles of surfactants/adjuv)