The effect of direct release (inside bags) of faba bean seeds or wheat grains with the release of Anisopteromalus calandrae was studied on insects populations, percentage damage seeds and percentage weight loss of stored seeds or grains due to infestation with Callosobruchus maculates (F.), Callosobruchus chinensis (L.) on faba bean seeds, Rhyzopertha dominica (F.) and Sitophilus oryzae (L.) on wheat grains at Ismalia and Sharkia governorates locations. Results showed release of A. calandrae reduced the monthly rate of increase of tested beetles on faba bean at rates between 35.20 and 42.14%. These rates resulted in populations reduction at the end of 6 month storage period at rates between 31.24 and 36.71%. In case of wheat grains the monthly rate of increase was reduced at rates between 29.05 and 46.80%. These rates resulted in populations reduction at the end of storage period at rates between 31.51 and 47.98%. The relative faba bean damage after the storage period was reduced in the range of 32.71 to 40.99% as a result of the parasitoid release. In case of wheat grains the obtained reduction in grain weight ranged between 72.67 and 81.66.

Evaluation of entomopathogenic fungus Verticillium lecanii (Zimmermann) Vieges and the predator Chrysoperla carnea (Stephens) against cowpea aphid,Aphis craccivora (Koch) on faba bean in EGYPT ABSTRACT Three tested treatments of the entomopathogenic fungus Verticillium lecanii (Zimmermann) Vieges, the predator Chrysoperla carnea (Stephens) and V. lecanii followed by release of C. carnea in faba bean field for controlling cowpea aphid, Aphis craccivora (Koch) compared with control were conducted. The first treatment was V. lecanii repeated 4 times at 15-days intervals at the rate of 10 8 spores/ml. The second was C. carnea at the same intervals at the rate of 12,000 predator [larvae (L2)]/feddan/releases. The third was V. lecanii applied 2 times at 15-days intervals at the same rate followed by release of C. carnea 2 times at 15-days intervals at the same rate. Treatments were conducted during 2006-2007 and 2007-2008 at a location in Ismailia Governorate. These treatments indicated the potential use of these treatments to control A. craccivora on faba bean. Reduction in A. craccivora population and subsequent yields were significant between treatments. Highest reduction and yield gain was observed when fungus V. lecanii was applied.

The study of the relationship between the important insect pests and their related predators on weeds border of the sugar beet and cotton fields was carried out at Kafr El-Sheikh region during two successive seasons, 2005/2006 and 2006/2007. Seven insect species, four insect pests and three predators were recorded on both weeds border and sugar beet plants, while eleven insect species occurred on cotton plants, seven insect pests and four predators. The most dominant predators were Scymnus spp., Coccinella undecimpunctata and Paederus alfierii. Significant correlation was found between Scymnus spp. on weeds and jassids on sugar beet and cotton. There was significant correlation between Scymnus spp. on weeds and on cotton plants (r = 0.502). Signficant correlation was recorded between Scymnus spp. on weeds and aphids on sugar beet (r = 0.598). On cotton plants, 97% of Scymnus spp. were larvae, while 100% of Scymnus spp. on weeds border were adults. There were relationship between the C. undecimpunctata and P. alfierii predators and Oxycarenus hyalinipennis pest on weeds border (0.791) and on cotton plants (0.522*). Highly significant correlation was recorded between O. hyalinipennis on weeds border and the on cotton plants (r=0.676**) in the second season. The weeds border served as dwelling of the predators especially in winter. Scymnus spp. was common predators on Bermod grass (Cynodon dactylon). When the predator numbers began to decrease on weeds border began to increase on plant crops by third week of May.