Abstract:
The compatibility of insecticides and fungicides commonly used for the control of insect
pest and disease of rice was studied in the laboratory using Nilaparvata lugens and Rhizocfonia sdanl
as lest organisms. By fixing the proportion of constituents in the insecticidal, fungicidal mixture
judiciously, it may be possible to reduce the field dose of insecticide as there was synergism in the
insecticidal activities of lower dose of quinalphos when combined with different doses of fungicides.
The fungicidal effectsof the three fungicides were signifcantly altered when combined with
insecticides. Combination with fungicides showed an antagonistic effect at higher levels of
captofol, ediphenphosand carbendazim, while at lower concentrations there was enhancement of
fungicidal effect.
