Prediction of annual generations of the tomato leaf miner Tuta absoluta on tomato cultivations in Egypt

Abstract

The first generation was recorded by the end of April 2012 while the 9th generation was completed on 24.4 days of December 2012. In Merssa-Matrouh governorate, the mean annual temperature was 20.53 °C and the number of the annual generations was found to be 7 during 2012. The first generation occurred on the day 19.86 of April 2012 while the 7th generation cycle was detected after 30.98 days of January 2013. This means that there must be successive emergence of the adults but with variations during the different months and locations in correlation with variation of temperatures.