Fluctuation and Distribution of Frankliniella occidentalis (Pergande) and Thrips tabaci Lindeman (Thysanoptera: Thripidae) Populations in Greenhouse Cucumber and Tomato

Influence of Plant Age and Weather Factors on Population Density of Main Insect Pests Attacking Eggplants under Open Field Conditions

“…The peak of thrips insect populations was recorded on onion plants during April with 54.75 thrips/plant and the relation between insect population and the weather factors showed that the mean temperature has a positive correlation with thrips population.The results are consistent with those of (Farmanullah et al, 2010;Edelson et al, 1986), who found that onion thrip populations oscillate from February to May, peaking in April. The findings of Deligeorgidis et al (2005) and Duchovskiene (2006), which indicate that the peak population of onion thrips and western flower thrips on tomato and cumber crops occurs in May and July throughout the cropping season, are likewise comparable with the present data. As the temperature rose, Murai (2000) reported a decline in the T. tabaci population.…”