Pre-bloom control of pear psylla (Cacopsylla pyricola) using chemical compounds in combination with yellow sticky traps

Abstract

Cacopsylla pyricola (Foerster) (Hemiptera: Psyllidae) is an important pest of pear in Iran. This study was carried out to evaluate the combination of using chemical compounds with yellow sticky traps for control of the pest at pre-bloom stage of pear trees. The experiments were performed using three treatments (2% oil and sticky traps, 1% oil plus Pyriproxyfen and sticky traps, and 1% oil plus fenoxycarb-lufenuron and sticky traps) along with the untreated control in a randomized complete block design. Treatment spraying was performed at bud swelling stage of pear trees, and then four yellow sticky traps were placed on tree branches in all treatments but the control. All the treatments were replicated three times. The mortality data were subjected to one-way ANOVA. The results showed combination of the tested compounds and yellow sticky traps could reduce the pest population up to 99.8%. The findings indicated that 2% oil in combination with sticky traps is very effective in controlling psylla.