Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Evaluation of neem seed oil as tuber protectant against Phthorimaea operculella Zell. (Lepidoptera, Gelechiidae).

Abstract

Neem seed extract at 20, 40, 60, 80 and 100 p.p.m. was compared with Sevin 10% [carbaryl] (at 1.0 kg/ton potatoes) for control of Phthorimaea operculella on potatoes stored covered with a rice hill in a store in Menoufiya, Egypt, in summer 1990. Storage losses after 6 months in potatoes treated with 100 p.p.m. neem oil and carbaryl were 25 and 10%, resp. In laboratory experiments, 100 p.p.m. neem oil and carbaryl caused 78.57 and 88.1% mortality of larvae, resp., and both allowed only 10% successful pupation. All adults emerging from pupae of larvae treated with 100 p.p.m. neem oil were deformed.