Abstract
The effect of direct release (inside bags) of faba bean seeds or wheatgrains with the release ofAnisopteromalus 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.
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