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Sequential Sampling Plan for Scheduling Control of Lepidopteran Pests of Fresh Market Sweet Corn

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Abstract:

Counts of com plants infested by European com borer, Ostrinia nubilalis (Hübner), fall army worm, Spodoptera frugiperda (J. E. Smith), and com earworm, Helicoverpa zea (Boddie),were described by binomial and beta-binomial probability distribution functions. Two sequential classification sampling plans were constructed using thresholds of 15 and 5% infested plants. Stop lines for these sampling plans were constructed using a binomial model. The precision with which these plans classified the proportion of infested plants when sample counts were distributed according to a beta-binomial distribution was determined using simulation. When counts were beta-binomially distributed, precision was reduced. Sampling plans were judged to be acceptable though because the overall operating characteristic function obtained after repeatedly sampling a population 2 or 3 times was shifted to the left on the proportion of infested plants scale resulting in an increased likelihood of reaching a decision to intervene. Field evaluation of the sampling plans revealed that they classified pest infestation very precisely and on average, resulted in a 45% savings in sample costs when compared with a fixed sample size.

Document Type: Research Article

Publication date: April 1, 1996

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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