Environmental Entomology (1983) 12, 1443-1446

M.K. Bergman, J.J. Tollefson and P.N. Hinz (1983)
Spatial dispersion of corn rootworm larvae (Coleoptera: Chrysomelidae) in Iowa cornfields
Environmental Entomology 12 (5), 1443-1446
Abstract: Selected central Iowa cornfields were sampled for corn rootworm larvae in 1978 and 1979, using core and cube sample units. Dispersion patterns were examined by field for each year with the variance-to-mean ratio. Spatial dispersion across fields was estimated from the 1979 sample counts by using s²/m and Taylor's power law. Most populations of corn rootworm larvae exhibited aggregated dispersion patterns. A discussion of possible reasons for aggregation is presented.
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Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Diabrotica virgifera	Maize/corn (Zea mays)	U.S.A. (mid N)
	Diabrotica barberi	Maize/corn (Zea mays)	U.S.A. (mid N)