Population dynamics of Aphis craccivora (Koch) and its natural enemies on bean crop in relation to weather parameters in Vadodara, Gujarat, India

The studies on the population dynamics of Aphis craccivora (Koch) were conducted during 2008–2011. This pest is a serious pest in the agricultural fields of Vadodara, India. The results showed that the aphid population was higher in the month of September to January on bean crop. The maximum population of Aphis craccivora (Koch) was seen in the month of January to March. The correlation of the aphid population was done with abiotic and biotic factors. The aphid population was showing positive correlation with high temperature and the population of predators and other associated insect was showing negative correlation with minimum temperature, relative humidity and rainfall. Hence the information contained in this paper lead to the identification of the proper integrated pest management (IPM) practises for Aphis craccivora (Koch) management.