Evaluation of certain plant oils for their acaricidal property against Citrus leaf mite, Panonychus citri on acid lime

Abstract

The field investigation was carried out to evaluate the acaricidal property of certain plant oils against citrus leaf mite, P. citri at Madurai Agricultural College and Research Institute during Kharif 2018. Among the plant oils evaluated, neem oil (6.3 No./ leaf, 76.6% reduction), citrus peel oil (7.0 No./ leaf, 74.0% reduction) and citronella oil (7.3 No./ leaf, 72.9% reduction) were proved to be superior with the least mite population and the highest per cent reduction over untreated check coupled with higher fruit yield (9.6, 7.7, 6.9 t/ha) and increased cost benefit ratio (1:3, 1:2.4, 1:2.1), respectively over untreated check.