Life cycle of Tetranychus hypogeae Gupta infesting rose in 24 Paraganas district of West Bengal with bio-efficacy of some green pesticides for its management

Abstract

The present communication reports the occurrence of a serious mite pest, Tetranychus hypogeae on Blood Beauty and Tajmahal varieties of rose at Horticulture garden of Ramkrishna Mission, Narendrapur during summer season of 2021. The study on its life cycle under laboratory condition revels that it took 11.20 ± 1.15 days, fecundity as 34.00 ± 1.15 eggs, longevity (♀) as 12.12 ± 1.15 days and sex ratio being 1:3. The result of the bio-efficacy study with green pesticides indicates that the mean mortality was highest in Parthenium leaf extract (86.31%) followed by Lantana camara leaf extract (82.04%) and NSKE alcoholic extract (81.68%), while NSKE aqueous extract was poorest among all registering only 37.86% mortality. However, all the green pesticides proved having acaricidal effects.