[Use of botanical insecticides for controlling cowpea weevil (Callosobruchus maculatus F.)]
1994
Mayura Soonwera (King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology)
Four species of botanical insecticides (garlic bulbs (Allium sativum Linn.) sugar apple seeds (Annona squanosa Linn.), castor bean seeds (Ricinus communis L.) and neem tree seeds (Azadirachta indica Juss)) were tested for controlling cowpea weevil (Callosobruchus maculatus F.). The experiment was conducted in laboratory at temperature 33 deg C and 77 percent relative humidity, by using of 0.4 g ground plants per 10 g mungbean seeds were treated at 2 days aging of cowpea weevil adults with 10 couples (male:female = 1:1). The results showed that using castor bean seeds could be highest in controlling cowpea weevil, all eggs could not hatched definitely. These were followed by sugar apple seeds, neem tree sees and garlic bulbs.
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