Estimation of Leafmine Density of Liriomyza trifolii (Diptera: Agromyzidae) in Cherry Tomato Greenhouses using Fixed Precision Sequential Sampling Plans

Doo Hyung Lee, Jung Joon Park, Heungsun Park, Ki Jong Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This study was conducted to develop sequential sampling plans to estimate leafmine density by Liriomyza trifolii (Burgess) at three fixed-precision levels in commercial tomato greenhouses. The within-greenhouse spatial patterns of leafmines were aggregated. The slopes and intercepts of Taylor's power law did not differ between greenhouses and years. A fixed-precision level sampling plan was developed using the parameters of Taylor's power law generated from total number of leafmines in a tomato leaf (consisted of 7 leaflets) at three precision levels (D) of 0.20, 0.25, and 0.30. The resulting sampling plans were tested with sequential bootstrap simulations (n = 500) using 9 independent data sets for validation. Bootstrap simulation within a wide range of densities demonstrated that actual D′ values at desired D = 0.30 averaged < 0.29 in all cases. even at the lowest density of leafmine (0.16 mines per leaf), the actual mean D′ value was 0.24 at D = 0.30. This result shows that the sampling plan developed in this study is effective and reliable for estimating the mine densities in tomato greenhouses.

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalJournal of Asia-Pacific Entomology
Volume8
Issue number1
DOIs
Publication statusPublished - 2005 Feb 1

Keywords

  • American serpentine leafminer
  • leafmine
  • resampling simulation
  • sequential sampling
  • spatial distribution
  • Taylor's power law
  • validation

ASJC Scopus subject areas

  • Insect Science

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