Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Effect of Density Variation on the Natural Enemies and Rice Pests by Application Method and Time of Carbofuran Granules

Carbofuran 입제의 처리방법 및 시기가 벼의 해충과 천적의 밀도에 미치는 영향

  • Kim Jeong-bu (Research Bureau, Gyeongnam Provincial O.R.D.) ;
  • Cho Dong-jin (Research Bureau, Gyeongnam Provincial O.R.D.) ;
  • Hah Jae-kyu (Research Bureau, Gyeongnam Provincial O.R.D.) ;
  • Chang Sun-deok (Research Bureau, Gyeongnam Provincial O.R.D.) ;
  • Bark Young-do (College of Agriculture, Gyeongsang National University)
  • Published : 1984.12.01
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Abstract

Studies were conducted to investigate the effect of Carbofuran 3G on the density variation of rice pests and their natural enemies in case the insecticide was treated two times as compared with usual trials in paddy field. Even the two times application of Carbofuran 3G in the nursery boxes of machine transplanting and paddy water trials obtain same results to pests, small brown planthopper (Laodelphax striatllus), green rice leafhopper (Nephotettix cincticeps), brown planthorper (Nilaparvata lugens), white back planthopper (Sogotella furcifera), rice stem bore (Chilo suppressalis), rice stem maggot (Chlorops oryzae), rice thrips (cloethrips oryzae) as compared with usual trials. The density of natural enemies, spiders and egg parasite, Anagrus sp. of planthoppers in the two times application part of Carbofuran 3G increased 2.4 fold as compared with usual trials.

본 연구는 경상남도 진주에 위치한 농촌진흥원 해충 시험포장에서 Carbofuran 입제를 본답기에 2회 처리와 농가 관행방제인 살충제 9회 처리간의 벼 해충과 이들 천적의 밀도를 비교 조사하였다. 1. Carbofuran $3\%$ 입제를 기계이앙시 육묘상자 처리와 7월중순 수면 처리등 본답기에 2회만 처리하여도 벼의 주요해충인 멸구 매미충류, 나방류, 굴파리, 총채벌레등의 방제효과가 관행 방제인 살충제 9회 처리와 비등한 경향이었다. 2. 벼 해충의 천적인 거미류와 멸구류의 난기생봉(Anagrus sp.)의 밀도는 Carbofuran 입제 처리가 관행방제보다 2.4배 밀도가 높았다.

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