STUDIES ON PROFENOFOS AND THlAMETHOXAM RESISTANCE IN WHITEFLY, BEMISIA TABACI

Abstract

This study has indicated lhai [he response of different strains of the whiteflyT Collected from different goveniorates of Egypt, during 2000 and 2001 seasons at the early acid die end cotton growing season, to the various insecticides tesLed. Res tills obtained may be concluded as follows:-1- The levels of the insect resistance to all tested compounds in 2000 season were less than in 2001 season, also the early of season was less than in end of season. The LCSOs In 2001 survey ggests an increase in the frequency of re s istant genotypes.