Establishment of brown planthopper, Nilaparvata lugens (Stal) population - weather model

Multiple linear pest-weather regression model was developed between weather factors viz., maximum temperature (T_max), minimum temperature (T_min), morning relative humidity (RH₁) and evening relative humidity (RH₂) and logarithmically transformed BPH light trap catches observed during kharif season from 2000 to 2007 at Maruteru, Andhra Pradesh. The pest-weather model involving three weather parameters viz., T_max, T_min and RH, was found to be the best fit as all the three weather factors showed significant influence on BPH light trap catches with the coefficient of determination (R²) being 0.674.