Год выпуска: 2011 Автор: A. V. Khanpara Издательство: LAP Lambert Academic Publishing Страниц: 104 ISBN: 9783844321982
Описание
Among various insect-pests attacking pigeonpea, H. armigera (Hubner) Hardwick is a cosmopolitan and highly polyphagous insect and is the major biotic constraint. In Asia, H. armigera has developed high levels of resistance to organochlorine, organophosphates and synthetic pyrethroids. The trends also highlight the need for safe and effective management strategies for H. armigera, given impetus to the development and use of alternative and has less negative impact on beneficial organisms than conventional insecticides. At present, alternative is the biopesticides for its eco-friendly management. The effectiveness and economics of different treatments Bt @ 1.0 kg/ha and Bb @ 1.5 kg/ha along with half dose of endosulfan 0.035 per cent per cent were found as effective as the recommended synthetic insecticides for the eco-friendly management. The persistence of B. thuringiensis @ 2.0 kg/ha and B. bassiana @ 3.0 kg/ha became half within 3 days and caused the mortality in H. armigera larvae...
