Seasonal incidence of thrips (Thrips tabaci Lindeman) on cucumber under polyhouse condition

The study revealed that incidence of thrips was highest in the cucumber under polyhouse condition during the 43^rd standard meteorological week (50.06 thrips/3 leaves/plant), whereas it was minimum in 1^st standard meteorological week (25.86 thrips/3 leaves/plant). There was a significant positive correlation between temperature and thrips population. Whereas humidity was negatively correlated. Out of Linear and non-linear regression equations work out from the data revealed that cubic non-linear equation could give 90% precision which could help the farmer in early prediction of thrips incidence in polyhouse.