Publications

Titles

English :

Efficiency of certain plant oils as grain protectants against the rice weevil (Sitophilus oryzae l.) (Coleo ptera: Curculionidae)

Arabic :

فاعلية بعض الزيوت النباتية كمواد واقية لحبوب القمح ضد حشرة سوسة الأرز

Abstract

The efficiency of eight plant oils was tested against Sitophilus oryzae L. adults using the treated wheat grains technique. The oils were rue, frankincense, juniper, shallot, fenugreek, cabbage, and nactom and marjoram. The high doses caused high mortality (67.8- 97.8%) after 3 days of exposure and a complete mortality (100%) after 7 days. While this effect continued up to five months for some oils as marjoram and cabbage, it lasted two months only with nactom, frankincense and juniper and one month with other oils. The LC50 level of all oils reduced greatly the number of eggs with about (94- 100%) and no offspring was obtained. Treatment of wheat grains with the tested oils had had in some cases a clear adverse effect on the grain germination. This effect, on water absorption was slight with no clear trend comparing with the control.

Publication year

2008

Pages

485-494

Availability location

معهد بحوث وقاية النباتات

Availability number

Organization Name

Plant Protection Research Institute (PPRI)

City

المنصورة

serial title