المكافحة الكيميائية و الإحيائية للحلمة ذات البقعتين Tetranychus urticae (Koch)‎ (Tetranychidae : Acari)‎ على نبات خيار القثاء

Abstract EN

The results of field study revealed that the density of two spooted red spider mites T.

urticae in the observation periods had a significant differences, the highest maximum population densities were recorded within the periods of 1st and 3eal of March, the population were 31.2 Mite/Inch2, for both periods compared with other observed period.

The analysis of Chemical pesticide efficieus results showed that the pesticide Kumulus (after 72h of treatment ) had a significant effect in comparison with tested pesticides, which gave Mortalits percent of 57.74% in the adults of Mite flower, the experiment of Mites pathogens elucidated that both bioagents: Trichoderma harziianum and Beauveria bassiana had a positive effect in terms of biological contact of dust mites , their treatments led to a total mortality of 90% , for both patho-gen after 72 of treatment , compared with bacterial Suspension of Bacillus thurigienesis which led to a mortal its of 45.7% , The field experiment results showed that the chemical pesticide Ambactir decreased the population densi-ty of dust mites from 140 mites/inch2 to 36.7 mites/inch2after 14 day of treatment , without any differences from the pesticide Msulfur which de-creased the population from 80.4 mites/inch2 into 42.3 mites/inch2.