| Abstrakt: |
The study aimed to evaluate the effect of the pesticides Avaunt, Biotech, Actara, Acetampride and Sulfur, and some biological agents as Bacillus thuringiensis and Metarhizum anisopliae and Trichoderma harzianum on the percentage of mortality of nymphs Bemisia tabaci (Genn) in the Plant Protection Department and the fields of the Agricultural Research Station of the College of Agriculture, University of Basrah. The laboratory results showed the highest percentage of mortality of 100% in the treatment of all pesticides except sulfur after 72 hours of treatment. The study showed an increase in the percentage of mortality of all the pesticides above when the exposure period increased and the rate of impact of the exposure period in the percentage of depreciation 45.51, 56.61, 88.27% during 24, 48, 72 hours, respectively. Furthermore, the highest pesticide impact of Acetampride, the rate of its impact on the percentage mortality of 82.22%. The best biological agents were the treatment with the fungi exudates of M. anisopliae, where the percentage of mortality was 53.71%, followed by the effect of bacteria and its effect was 40.60% at the field trials, the pesticide Acetampride the average efficiency of the pesticide was 75.04%. The use of fungi exudates increased the percentage of mortality to reach 41.19%. The increased concentration has increased the percentage rate 25.51, 32.23, 40.63%, respectively. The use of fungi exudates increased the percentage of mortality to reach 41.19%. The increased concentration has increased the percentage rate 25.51, 32.23, 40.63%, respectively. [ABSTRACT FROM AUTHOR] |
