Insecticidal value of castor (Ricinus cummunis) against termites

Abstract

The insecticidal value of the castor oil plant (Ricinus communis) in controlling the termites which damage the wood of Mangifera indica and Pinus longifolia was examined. In comparative trials, the order of insecticidal activity was DDT=BHC > castor oil + castor cake (1:1) > castor oil > castor leaves > castor cake > neem oil > neem leaves. All treatments significantly reduced weight loss in wood pieces exposed to termites.