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DISTRIBUTION OF INSECTS IN SOYBEAN FIELDS1

Published online by Cambridge University Press:  31 May 2012

Merle Shepard
Affiliation:
Department of Entomology and Economic Zoology, Clemson University, Clemson, South Carolina
G. R. Carner
Affiliation:
Department of Entomology and Economic Zoology, Clemson University, Clemson, South Carolina

Abstract

A 3-year study of spatial distribution patterns of insect pests in soybean fields revealed that the Poisson series described the distribution of most species. These species were: green cloverworms, Plathypena scabra (Fabricius); velvetbean caterpillars, Anticarsia gemmatalis Hübner; loopers Trichoplusia ni (Hübner), Pseudoplusia includens (Walker), and Heliothis spp. The Poisson with zeros distribution was second in characterizing the spatial patterns of many of the species. Field counts of Mexican bean beetles, Epilachna varivestis Mulsant, fitted the Neyman’s type A and negative binomial distributions most often.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1976

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