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Sampling Plan for Bemisia tabaci Adults by Using Yellow-color Sticky Traps in Tomato Greenhouses

시설토마토에서 황색트랩을 이용한 담배가루이 표본조사법

  • Song, Jeong Heub (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services) ;
  • Lee, Kwang Ju (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services) ;
  • Yang, Young Taek (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services) ;
  • Lee, Shin Chan (Division of Sustainable Agricultural Research, Jeju Agricultural Research and Extension Services)
  • 송정흡 (제주특별자치도농업기술원 친환경연구과) ;
  • 이광주 (제주특별자치도농업기술원 친환경연구과) ;
  • 양영택 (제주특별자치도농업기술원 친환경연구과) ;
  • 이신찬 (제주특별자치도농업기술원 친환경연구과)
  • Received : 2014.08.04
  • Accepted : 2014.10.28
  • Published : 2014.12.01

Abstract

The sweetpotato whitefly (SPW), Bemisia tabaci Gennadius, is a major pest in tomato greenhouses on Jeju Island because they transmit viral diseases. To develop practical sampling methods for adult SPWs, yellow-color sticky traps were used in commercial tomato greenhouses throughout the western part of Jeju Island in 2011 and 2012. On the basis of the size and growing conditions in the tomato greenhouses, 20 to 30 traps were installed in each greenhouse for developing a sampling plan. Adult SPWs were more attracted to horizontal traps placed 60 cm above the ground than to vertical trap placed 10 cm above the plant canopy. The spatial patterns of the adult SPWs were evaluated using Taylor's power law (TPL) and Iwao's patchiness regression (IPR). The results showed that adult SPWs were aggregated in each surveyed greenhouse. In this study, TPL showed better performance because of the coefficient of determination ($r^2$). On the basis of the fixed-precision level sampling plan using TPL parameters, more traps were required for higher precision in lower SPW densities per trap. A sequential sampling stop line was constructed using TPL parameters. If the treatment threshold was greater than 10 maximum adult SPWs on a trap, the required traps numbered 15 at a fixed-precision level of 0.25. In estimating the mean density per trap, the proportion of traps with two or more adult SPWs was more efficient than whole counting: ${\ln}(m)=1.19+0.90{\ln}(-{\ln}(1-p_T))$. The results of this study could be used to prevent the dissemination of SPW as a viral disease vector by using accurate control decision in SPW management programs.

Acknowledgement

Grant : 오이, 국화 등 15작물의 돌발해충 예찰방법 표준화기술개발

Supported by : 농촌진흥청

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