Evaluation of chemical control schedules against Asian citrus psyllid (Diaphorina citri) (Hemiptera: Liviidae)

• Published in: The Indian journal of agricultural sciences 2017-05, Vol.87 (5)
• Main Authors: RAO, C N, RAHANGDALE, S Y, GEORGE, ANJITHA, DHENGRE, V N
• Format: Article
• Language: English
• ISSN: 0019-5022; 2394-3319
• DOI: 10.56093/ijas.v87i5.70211

Five chemical control schedules (modules) consisting of imidacloprid, abamectin, dimethoate and thiamethoxam along with control were evaluated against Asian citrus psyllid (ACP) Diaphorina citri Kuwayama during spring 2013 and 2014. Results showed that module- with foliar application of thiamethoxam @ 0.008% 20 days before flushing followed by foliar application of abamectin @0.0006% and imidacloprid @ 0.009% during flushing at an interval of 20 days) was recorded significantly low psyllid population (6.43, 8.03, 6.90, 15.88 and 20.68 psylla/5cm twig at 7, 14, 21, 40 and 60 days after treatment, DAT, respectively) and was at par with module- soil application of thiamethoxam @ 0.008% 20 days before flushing followed by foliar application of abamectin @ 0.0006% and imidacloprid @ 0.009% during flushing at an interval of 20 days (9.5, 10.3, 10.35, 16.91 and 22.07 psylla/5cm twig at 7, 14, 21, 40, 60 DAT, respectively). Bioagent population was found higher on control trees (9.10-10.05 bioagents/10 cm twig) followed by module with soil application of thiamethoxam @ 0.008% 20 days before flushing and during flushing at an interval of 20 days (8.63-9.35 bioagents/10 cm twig at 21, 40 and 60 DAT) as compared to rest of the modules. For ACP control, module with foliar application of thiamethoxam, abamectin and imidacloprid at 20 days interval before, during and after flushing periods was found to be superior in protecting new flush from ACP compared to other insecticides modules.