الفهرس 
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Abstract
The aim of the present work was to study the Population dynamics of RPW Rhynchophorus. ferrugineus (Oliv.) adults in relation to certain climatic factors using attracting pheromone traps on date palm plantation . Experimental were conducted during two years (2009-2010) in Wardan and Abu-Ghaleb villages, 6th Governorate. This work was extended to study also the diurnal flying activity of RPW; improving the efficacy of RPW pheromone trap; effect of certain agricultural practices on infestation of date palm by RPW and impact of pheromone traps application on infestation of date palm by RPW. The obtained results could be summarized as follows:
1. Population dynamics of RPW:
1.1.Population dynamics of RPW on date palm plantation .
The population dynamics of RPW on date palm plantation was studied during 2009-2010.The results revealed that adults emerging continually throughout the year. The least adult population was recorded during December and January. In 2009, there were four peaks of emergence during 2nd week of April, 1st week of June, 1st week of August and 2nd week of November; in 2010, four peaks were also recorded during 4th week of March , 3rd week of June, 3rd week of July and 2nd week of November. The average mean value of the total, male and female adults population was17.79, 7.31,10.49 for year 2009 and in 2010 it was 22.81, 8.24,14.56 respectively . The mean of total adults population during 2010 was slightly higher than mean of total adults population during 2009,which could be due to the variation in the average of daily temperature during 2010 the two years. The population fluctuation of the male and female captured adults of RPW using aggregation pheromone traps showed the same trend as indicated by the total adults population during the two years. The results showed significantly more trapped female than males during the study(sex ratio = 1.6:1)
1.2.The effect of weather climatic factors on the population abundance of RPW:
The effect of weather factors (mean daily temperature &RH) on the population abundance of RPW during 2009 and 2010 showed that the simple correlation coefficient (r) value indicated significant positive correlation between average temperature and adults population abundance of the RPW during the tested two years of 2009 and 2010,while the means of daily relative humidity had significant negative effect on the population abundance of the RPW adults during the two years. The analysis of variance revealed that the two factors (Temp.+RH.) are responsible for about 22.9% in the variability of the RPW populations during the studied years of 2009 and 2010.