Efficacy of essential oils on groundnut bruchid Caryedon serratus (Oliver)

Author: Y. Srujana*, K. Vemana, K.S.S. Naik, O. Venkateswarlu and E. Venkataramanana

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Abstract

Groundnut bruchid Caryedon serratus (Oliver) is the major insect pest of concern as it attacks and damages the pods and kernals in stored conditions. To manage storage grain insect pest mostly inorganic pesticides are being used which causes deleterious effect on humans. Hence, an experiment was conducted to test the bio-efficacy of some safe and eco-friendly essential oils against groundnut bruchid under laboratory conditions. Highest adult bruchid mortality of 90% was recorded from neem seed oil 10% followed by neem seed oil 5% (83.33%). These were followed by pongamia seed oil 10% (80%), castor seed oil 10% (75%), pongamia seed seed oil 5% (73.33%) and castor seed oil 5% (65%). Therefore, an eco-friendly approach like use of essential oils like neem oil may be encouraged to manage the groundnut bruchid in storage conditions.

Keywords

Groundnut, Caryedon serratus, essential oils, per cent mortality.

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