الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
SUMMARY
The present study was initiated at two investigated date palm orchards, in the villages of Koom El-Tarfaya & Kombanyiat Abo-Kir, Kafr EL-Dawar center, EL-Beheira Governorate, during the growing seasons of 2006-2007 & 2007-2008, to evaluate three food baits, and a chemical attractant in the management of red palm weevil, by pheromone / Food based trapping system during the growing season; and determine the more attractive food bait throughtout the consequent annual seasons under the performed agro-technical practices, agrocliamatic conditions and followed intercropping system in each of the investigated orchards at Kafr – EL-Dawar center. In addition to evaluation of the toxic efficiency of some new insecticides, and the use of a sound detector for asigning the occurring infestartion and performance of demanded control measure against the insect. Besides, surveying the possible associating mite species with the weevil in the infested farms. The obtained results indicated the following:
5.1. Effect of intercropping system in the investigated date palm orchards,
on the annual variations in populations of the red palm weevil
Rhynchophorus ferrugineus Oliv.:
The effects of followed intercropping under the conditions of applied agro-technical practices and prevalling climatic conditions on the existing red palm weevil, populations in the investigated date palm orchards showed a delayed flight activity of both adult-sexes throughout most months of the growing season, with three recorded prominant peaks during May, July &October-November, indicating the propable occurrence of three generations of red palm weevil in EL-Beheira governorate.
The rate of emerging adult females was higher and nearly twice as that of the emerging adult males, showing a female based sex ratio ranged between 1 male : 2.3 and/or 2.4 female.
The delayed flight activity of adult-weevils is greatly related to the resulted interaction of performed interplanting and agropractices with the prevailing higrothermic conditions. The estimated correlation coefficient (r) values between the numerical rates of weevil’s catches in tested traps and mean values of prevailing higro- therim parameters during the season proved the high significant relationship between the number of caught weevils and each of the studied parameters of daily temperature and relative humidity.
The higher and/or lower numbers of captured adult-weevils were detected in case of interplanting citrus and banana trees and/or guava trees and field crops with the growing date palm varieties. Interplanting guava trees decreased the rate of infestation (0.98-1.6 %), versus increased level of infestation of red palm weevil in case of interplanting citrus and banana trees (3.9-5.4 %) with date palm varieties in the inspected orchards.