Fig. 4

Quadratic interactions of monthly precipitation (a) and temperature (b) on rice stem borer in Bangladesh. The response variable monthly abundance of Scirpophaga incertulas was log (x + 1) transformed before analysis. For the simple linear regressions between abundance and temperature at high, intermediate and low rainfall (a), R² = 0.971, 0.956 and 0.887, respectively; F = 419.783, 389.432 and 203.806, respectively; sig. < 0.001, 0.001 and 0.001, respectively. For the simple linear regressions between abundance and precipitation at high, intermediate and low temperature, R² = 0.871, 0.644, and 0.188, respectively; F = 191.949, 24.374 and 3.367, respectively; sig. = < 0.001, 0.001 and 0.050, respectively. See the text for detail