Effect of Neem Products On the Development of Maize Stalk Borer, Chilo partellus (Swinhoe)

Effect of neem products azadirachtin and neem azal on the development of Chilo partellus was studied. Neem products when added to artificial diet for rearing C. partellus in the laboratory, adversely affected larval and pupal weights, prolonged developmental period from larva to adult, lowered the % insects completing their development from larva to adult, affected logevity of moths, reduced egg laying capacity of females and resulted in high egg mortality, whereas, the effect of neem products on sex ratio was not pronounced.