author(s)
Monika Jangra, Rachna Gulati, Sonika and VK Batra

abstract
In present investigation, the bioefficacy of methanolic leaf and seed extracts of Karanj (Pongamia pinnata) were tested to evaluate their toxic effects at different concentration (10.0, 7.5, 5.0, 2.5, 1.25, 0.75 and 0.37%) against mixed population of Polyphagotarsonemus latus on chilli during 2016 under in vitro conditions. P. pinnata responded to the mite in a concentration dependent manner i.e. lowest number of live mites and highest mortality in population was obtained with highest concentration tested (10.0%). Out of an initial number 10 mite, significantly less number of mites were recorded at 10.00 percent concentration of P. pinnata seed extract followed by 7.50, 5.00, 2.50 and 1.25 per cent concentration than 0.75, 0.37 percent treatment and control (CD=0.10; p=0.05). The mean number of live mites were (3.61 to 6.61 mites) out of the initial 10 mites in different treatments of P. pinnata leaf extract were significantly lower (CD=0.11; p=0.05) than the water alone (9.89 Mites) treatments. The number of mites recorded in treatments 2.50 and 1.25 percent concentrations were at par with each other. The methanolic seed and leaf extract of P. pinnata caused 67.27 and 63.89 percent mortality of P. latus at 10.00 percent concentration.