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Economic Injury Level of Bemisia tabaci Infesting Greenhouse Tomato

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  • URLhttps://db.koreascholar.com/Article/Detail/290341
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한국응용곤충학회 (Korean Society Of Applied Entomology)
초록

Economic injury level was estimated for the sweetpotato whitefly, Bemisia tabaci on greenhouse tomato (Lycopersicon esculantum cultivar pinktop). In the greenhouse, seedling tomato transplanted at mid-April and inoculated B. tabaci at late-April with the densities of 0, 1, 3, 9, 27, 54, 108 and 216 per plant. Only 108 and 216 inoculation densities increased until mid-July. Total weight of fruits was not showed the differences by initial whitefly density; however, the total weight of marketable fruits decreased significantly among plots by higher initial whitefly density. The rates of yield loss increased with increasing whitefly density, resulting in 8.3, 14.0, 29.7, 29.7, 25.7, 40.4, and 69.4% reduction in each of the plots, respectively. The relationship between initial whitefly densities and yield losses was well described by a linear regression, Y= 18.09X+6026.5, R2=0.8504. Based on the relationship, the number of adults per plant which can cause 5% loss of yield was estimated to be approximately 17.

저자
  • Ki-Su Ahn(Chungbuk Provincial ARES)
  • Kyu-Ri Lee(Department of Plant Medicine, Chungbuk National University)
  • Gil-hah Kim(Department of Plant Medicine, Chungbuk National University)