EFFICACY OF SOME PLANT EXTRACTS AGAINST RICE BORERS AND LEAF FOLDER IN INTEGRATION WITH BIOCONTROL AGENTS (CHRYSOPERLA CARNEA AND TRICHOGRAMMA CHILONIS)

The present study was conducted with the objective to find out the potential of Chrysoperla carnea and Trichogramma chilonis in integration with some botanicals and one bio-pesticide against rice borers. The treatments included extract of Eucalyptus camaldulensis, Melia azedarach, Azadirachta indica, Spinosad, two bio control agents Trichogramma chilonis and Chrysoperla carnea; alone as well as in all possible combinations. The results revealed that in most of the observations maximum number of dead hearts and white heads were recorded in control plot followed by Chrysoperla carnea, exctract of Eucalyptus and Melia azedarach, respectively. However the integration of botanicals with biocontrol agents greatly reduced , the plant damage. Maximum rice yield was obtained from plots treated with a combination of neem extract, Trichogramma, Chrysoperla and Spinosad as well as of Spinosad, Chrysoperla and Trichogramma, while minimum yield was observed from plants left untreated followed by Chrysoperla carnea, extract of Eucalyptus and Melia azedarach, respectively.