The purpose of this study was to examine the damage rate of insect pests on chestnut orchards. and to investigate the effects of varying methods of insect pests control. The results revealed that there was a statistically significant(p<0.05) difference among early-ripenign, middleripening, and late-ripening cultivars. The damage rate of Dichocrocis punctiferalis was highest in early-ripening cultivars(24.22%), followed by middle-ripening(22.71%) and late-ripening(20.25%). The damage rate of Curculio sikkimensis was highest in late-ripening cultivars(24.52%), followed by middle-ripening(22.61%) and early-ripening(19.96%). There was a statistically significant(p<0.05) difference in damage rates after insect pests control. Two methods of insect pests control, using either helicopter or an unmanned drone, were used. The results revealed significant differences (p<0.05) between D. punctiferalis and C. sikkimensis. Changes in the damage rates of D. punctiferalis after drone control were 8.97%~9.62%, and that after helicopter control was 14.82~15.94%, which was 20.25%~24.22% significant difference(p<0.05) from control site. Changes in damage rates of C. sikkimensis after drone spraying was 6.77~7.72%, and that after helicopter spraying was 12.62~14.94%, which was 19.96~24.52% significant difference(p<0.05) from control sites. Control effects of D. punctiferalis by drone spraying was 59.06% and helicopter spraying was 30.82%. Control effects of C. sikkimensis by drone spraying was 66.97% and helicopter spraying was 40.78%.

썩덩나무노린재(Hemiptera: Pentatomidae)의 발육을 15, 20, 23, 25, 30℃에서 조사하였다. 종령기까지 발육을 완성한 온도는 20℃와 23℃이었다. 20℃와 23℃에서 약충기간은 각각 46.9일과 35.5일이었으며, 1령 기간이 가장 짧고 5령기간이 가장 길었다. 실험에 사용한 최저 온도인 15℃에서는 2령까지, 30℃에서는 4령까지 발육하는 동안에 모든 개체가 사망하였다. 암수 성충의 수명은 20℃에서는 각각 53.6일과 45.3일이었고, 23℃에서는 각각 50.1일과 68.1일이었다. 암컷 당 총 산란수는 20℃에서는 135.8개, 23℃에서 242.9개이었다. 알에서부터 성충우화까지 필요한 평균 적산온도(발육영점온도 13.94℃ 적용)는 20℃와 23℃에서 각각 314.5 일도와 367.8 일도이었다. 그 외에 약충의 각 령기별 발육기간과 사망율, 산란전기간과 산란후기간, 산란횟수별 산란수, 알에서 산란전기간까지의 적산온도 등이 조사되었다.