author(s)
Vignesh M, Patil RK and Udhayakumar VS

abstract
Two spotted spider mite Tetranicus urticae is major non insect pest of greenhouse crops causing huge setback for the cultivation. Problems with the chemical pesticides like resistance, resurgence and environmental effects diverted the pest management tactics towards eco-friendly manner. So the effort has been made under laboratory condition to find the best biorational pesticides and their possible combination which leads maximum mortality of the mite. Two entomopathogenic fungi (Beauveria bassiana and Lecanicillium lecanii IOF 1 strain @2g/l), four botanicals {Neem seed kernel extract (NSKE), Pongamia seed extract (PSE), Custard apple seed extract (CASE) @5% and Asafoetida @ 0.125%}, one mineral oil product {Agricultural spray oil (ASO) @5%} and five combinations of them has been tried. Among the combinations tried Agricultural spray oil + Custard apple seed extract + Pongamia seed extract + Neem seed kernel extract (2:1:2:2) @5% has shown synergetic action giving 100 percent mortality after 72 hours of treatment. And the most efficient entomopathonenic fungi against the two spotted spider mite was Lecaenicillium lecanii IOF 1 strain which gave the mortality of 72.77 percent mites after 72 hours of treatment. Results and the future aspects of the current study are discussed briefly in this paper.