Effect of certain bio-and chemical insecticides on the populations of sugarbeet fly, Pegomyla mixta vill and sugarbeet beetle, Cassida vittata de villers attacking sugarbeet [electronic resource].

Includes references.

This study was carried out during 2003/04 and 2004/05 sugarbeet seasons at Kafr El-Sheikh. Application of biocides, bacillus thuringiensis var. kurstaki under the commercial name dipel 2X, Beauveria bassiana balsamo under the commercial name biofly and chemical insecticides, selecron reduced variably the populations of pegomyia mixta and cassida vittata. Results showed that in 2003/04 and 2004/05 seasons, overall average reduction in P. mixta larval population due to Dipel 2X was 34.57 and 27.57 %, while due to Biofly was 38.00 and 38.57 % and that of Selecron was 91.86 and 100.00 %, respectively. Both Dipel 2X and Biofly, used as a biocide preparation were mainly effective after 7, 12 and 15 days from application against P. mixta. In concern C. vittata, in the first and second seasons (2003/04 & 2004/05), overall average reduction in C. vittata larval and adult populations due to Dipel 2X was 23.71 and 26.29 %, while due to Biofly was 9.71and 14.14 % and that ofSelecron was 76.00 and 97.00 %, respectively. Preparation of Dipel 2X was efficient against C. vittata, but Biofly was inefficient against the insect.

Summary in Arabic.

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