Effect of Thevetia nerifolia and Ricinus communis Seed Oil and Their Esterified Products on Mortality of Meloidogyne incognita and Rotylenchulus reniformis

摘要

The seed oils of Thevetia nerifolia and Ricinus communis and their esterified products were evaluated for the nematicidal properties against J_2 of Meloidogyne incognita and pre-adults of Rotylenchulus reniformis in vitro. Esterification enhanced theactivity of oils as compared to oil emulsion tested against both the nematode species One hundred % mortality was observed in esterified Ricinus oil against M. incognita and R. reniformis at 250 ppm for 72 hours exposure as compared to 53-69% in oil emulsion at the same concentration and exposure period.