Plant oils as grain protectants against infestations ofCryptolestes pusillus andRhyzopertha dominica in stored grain |
| |
Authors: | D Obeng-Ofori |
| |
Institution: | (1) International Centre for Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya |
| |
Abstract: | Plant oils (cottonseed, soybean, corn, groundnut and palm) at different dosages were evaluated in the laboratory for their
ability to suppress the populations ofCryptolestes pusillus andRhyzopertha dominica in maize and sorghum. Exposure of adults of both beetle species to grains treated with 10 ml/kg of the different oils induced
100% mortality within 24 h. A dose of 5 ml/kg of each oil significantly decreased the progeny produced byR. dominica. Complete protection was achieved on grains treated with 10 ml/kg. These oils also repelled the adults of both species. Percentage
weight loss caused byR. dominica in grains treated with 5 ml/kg and 10 ml/kg levels were significantly lower than in untreated grains. Oil treatment did not
affect the germination of, or water absorption by, maize and sorghum grains compared with untreated grains. The potential
use of plant oils in the management of insect pests in traditional grain storage is discussed. |
| |
Keywords: | Cryptolestes pusillus Rhyzopertha dominica maize sorghum plant oils stored grain pests |
本文献已被 SpringerLink 等数据库收录! |
|