author(s)
Hayat Zada and Ahmad -Ur- Rahman Saljoqi

abstract
Study was carried out to investigate population dynamics and impact of abiotic factors (Temperature, relative humidity and rainfall) on trap catches of apple codling moth (Cydia pomonella) at Madyan Swat in an unmanaged orchard during the year 2012-13. Results revealed that the first peak population (11.0±1.03 moths/trap) of C. pomonella was observed in 27th standard meteorological week (SMW), whilst the second peak population 10.25±0.9 moths/trap was in 33rd SMW. During the year 2013, the first and second peak population at Madyan was 10.25±0.81 &9.00±0.70 moths/trap in 29th and 35th SMW respectively. Correlation matrix revealed that C. pomonella showed statistically highly significant (p<0.01) positive correlation both with maximum (r = 0.857&0.824) and minimum temperature (r = 0.739& 0.755), whilst non-significant negative relation with percent relative humidity (morning and evening). Nonetheless, C. pomonella also showed non-significant negative correlation with total rainfall (mm). Multiple regression models explained 72.34 to 83.42% variability due to meteorological factors in the population dynamics of C. pomonella during the year 2012 and 2013. It was concluded that meteorological factors have a profound impact on the population dynamics of C. pomonella through pheromone trap catches at Madyan Swat.