Vol. 2, Issue 10 (2015)
Seasonal Abundance of Predator chrysopids and citrus psylla, Diaphorina Citri Kuwayama and predator in relation to citrus psylla on kagzi lime
Author(s): DG Dalvaniya, PS Patel
Abstract: The experiments were conducted on kagzi lime about the seasonal abundance of predators chrysopids and citrus psylla, D. citri on Kagzi lime was carried out at Horticulture Instructional Farm, College of Horticulture, S. D. Agricultural University, Sardarkrushinagar. Banaskantha (Gujarat). Mean data on the seasonal abundance of citrus psylla showed three peak times in a year, firstly in the month of March, second time in the month of June and third time in month of October. In the months mean, seasonal abundance of citrus psylla varied from 0.2to 13.64 psylla/twig on kagzi lime. Seasonal abundance of predator showed chrysopid was fluctuated at low level during different months and was ranged between 0.08 and 0.78/twig and higher during second week of October which coincided with peak population of most of citrus psylla on kagzi lime during the year January to December, 2012. The correlation study showed that predator chrysopids exhibited significant positive influence on seasonal abundance of citrus psylla.