Effects of Carbofuran Soil Incorporation on the Early Occurring Rice Insect Pests and the Brown Planthopper

본논초기해충군과 벼멸구에 미치는 Carbofuran 토양혼화처리의 영향

  • 배윤환 (서울대학교 농업생명과학대학 농생물학과 응용곤충전공) ;
  • 이준호 (서울대학교 농업생명과학대학 농생물학과 응용곤충전공) ;
  • 현재선 (서울대학교 농업생명과학대학 농생물학과 응용곤충전공)
  • Published : 1992.12.01

Abstract

Control effects of carbofuran soil incorporation just before transplanting on the early occur-ring rice insect pests were studied in the rice field. Also, its residual effects on the brown planthopper (BPH) were studied by pot experiments. Carbofurn soil incorporation in late May was much more effective in controlling the early occurring rice insect pests such as small brown planthopper, green leafhopper and rice stem borer than carbofuran broadcasting or diazinon (3G) + BPMC (50% EC) treatment in mid June. Residual effects of carbofuran soil incorportaion on the female adult BPH decreased ca. a half one month after treatment. However, its residual effects on the next generation of the BPH lasted much longer; control effects on the next generation were above 90 and 70% on 37 and 46 days after treatment, respectively. From these results, it is thought that carbofuran soil incorporation just before rice transplanting can be a good control method to the early occurring rice insect pests and the brown planthopper immigrating during June. Also, it can suppress immigrating BPH popula¬tion moderately in early July.