Ecological characteristics and environmentally friendly control strategies of Pochazia shantungensis (Hemiptera: Ricaniidae) in Korea

For processing based control strategy of Pochazia shantungensis, chemical synthetic pesticides and environmentally friendly agricultural materials were compared in laboratory and field conditions. The environmentally friendly control strategies also considered with ecological survey of packaging condition that is a repellent and an attractive effect using Lilium longiflorum and Clerodendrum trichotomum plantderived substances. P. shantungensis were hatched from over-wintering eggs in late-May, and the peak of occurrence of nymph of P. shantungensis showed in mid-July. Fifth instar nymphs emerged to adult from early-August and shows the peak of occurrence of adult at late-August. Adults were begun to lay egg from early September when was emerged after 3-4 weeks, at that time they also damaged to young stems of apple tree until October and then died. When applying chemical pesticides for the control of P. shantungensis, high insecticidal effect on most chemical pesticides showed. In addition, when plant extracts as the environmentally friendly agricultural materials sprayed, Sophora matrine and rotenone from Derris extract showed high insecticidal effect to P. shantungensis. As a member of the environmentally friendly control strategies, L. longijlorum for repellent effect and C. trichotomum for attract effect of P. shantungensis were examined. When the treatment of L. longijlorum appeared repellent effects with plant and methanol extraction of L. longijlorum at the laboratory experiments, however, there is no repellent response with concentrate of L. longijlorum. When the treatment of C. trichotomum appeared attract effects with plants, methanol extracts and concentrates.