Research Information System
PHYTOPARASITICA, vol.35, no.5, pp.466-473, 2007 (SCI-Expanded)
Laboratory and field experiments were conducted to evaluate the efficacy of kaolin particle film on winterform oviposition of the pear psylla Cacopsylla pyri (L.) (Hemiptera: Psyllidae). Kaolin particle film (kpf) treatment significantly reduced winterform oviposition rates in both choice and no-choice tests in the laboratory. In choice tests, overwintered females laid I I times more eggs on water-treated dormant shoots than on shoots treated with particle film, within 21 days after treatment. in no-choice tests, kpf treatment also significantly reduced egg numbers compared with water-treated controls. The results of field trials carried out in southwestern Turkey (Antalya) during the late winter - early spring of 2004 and 2005 showed very good efficacy of kpf treatment in comparison with water-treated control. Kpf treatment Oust before egg laying, during the dormant-postdormant period) delayed egg-laying activity in overwintered females for up to 3 weeks from the beginning of the experiment and continued to suppress oviposition significantly in comparison with water-treated control up to 4 weeks. Our overall results suggest that kpf treatment may be useful in pear psylla management programs by decreasing winterform oviposition, particularly in conjunction with other control tactics.