Abstract: To determine the trapping effects of different insect-trapping belts for the pests overwintering on apple tree trunk, the timing and sites of insect-trapping belts made from corrugated paper, polyethylene pearl cotton, or cloth strip were tested in apple orchards in 2016. Results showed that the three belts trapped insects of 9 families in 5 orders. The predominant categories were moth, mites, bugs, weevils, leafhoppers, among the others. The corrugated paper belts set in late August trapped 7.95 lepidopteran larvae and 11.15 Tetranychus viennensis per tree, which were both significantly higher than the other two belts. The corrugated paper belts set in early September trapped the highest numbers of lepidopteran larvae and T. viennensis (8.25 and 12.25 per tree, respectively). The distance of the belts to the first apple tree branch had obvious influence on trap catches, the belts near the first branch showing high catches. In contrast, the three belts showed no significant differences in trap catches of Halyomorpha picus and Sympiezomias velatus with regard to the timing and sites of set-up. Therefore, for a higher trapping of the overwintering pests on apple tree trunk, we recommend that the corrugated paper insect-trapping belts be set up near the first branch of apple tree in early September.

Key words: apple orchard, overwintering pests, insect-attracting belt, trapping effects, application technology