author(s)
Santhana Bharathi N and Mahendran P

abstract
Simarouba glauca and Hydnocarpus pentandra seed oils were evaluated against RSM under laboratory conditions. Among the tested treatments, H. pentandra and S. glauca @ 5ml/L were achieved significant mortality over adult RSM. Similarly, H. pentandra seed oil @ 4ml & 5ml/L have significantly achieved 100% egg mortality and other treatments such as Paraffinic oil @ 3ml/L and Neem oil @ 3ml/L and S. glauca seed oils were achieved at about 98%, 92% and 90% of egg mortality respectively. The oviposition deterrence study reveals that the least number of eggs were laid on the treatments of H. pentandra seed oil @ 5ml & 4ml/L and S. glauca seed oil @ 5ml/L which achieved the highest Discrimination Quotient (DQ) value of 0.65, 0.63 and 0.58 respectively. Both seed oils could be used as an effective alternative source to control RSM due to has admirable acaricidal, ovicidal and oviposition deterrence properties.