الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 156 |  |  |
| | | from | 156 | | |
Abstract
Host plant Red Palm Weevil infestation level: This experiment was conducted in date palm orchards lies in Fakous distract, Sharkya governorate to evaluate the susceptibility of six- date palm cultivars (zaghloul, hayani, bent- eshia, samani, amri and agalany) to the infestation with R. ferrugineus. 1.1. The RPW activity (infestation %) was increased gradually from January to reach the highest percentage in August. After that, the percentage of infestation was decreased toward the end of the season during all the study seasons 1.2. The highest score of infestation by R. ferrugineus receded on zaghloul cultivar followed by Hayani during the first season. Bent- eshia and samani ranked second in the infestation percentages, amri and agalany exhibited the lowest score of infestation. 1.3. The average infestation percentages of R. ferrugineus as affected by chemical components of the palm tree cultivars. It can be concluded that a kind of positive relationship was found between protein and phenol oxidase contents of palm trees and infestation percentages of R. ferrugineus.2. Host plant cultivars- R. ferrugineus ovipostion preference females exhibited the highest preferability to zaghloul followed by hayani cultivars. While, the lowest eggs occurred on amri and agalany cultivars. Bent eshia and samani were of intermediate for R. ferrugineus progeny.3. Swarming activity of R. ferrugineus adults in response to ferrugineol, ethyl acetate and their mixture of (pheromone and kairomone) with no significant between them in comparison with kairomone 3.2. Traps contained date fruits captured more weevils than traps without fruits. Moreover, higher rates of fruit weight improve captures up to the highest rate tested of 1 Kg, while the lowest potentiality was recorded at 0.2 Kg. 4- Evaluation the ovipostion deterrent effect of essential oils against RPW . All tested essential oils at a concentration of 15% significantly reduced egg laying, and exhibited high oviposition deterrent activity against R. ferrugineus females. Clove and eucalyptus essential oils proved. Comparative efficiency of insect predators on R. ferrugineus. E. annulipes, X.galactinus and Orius sp.