Environmental Entomology (1983) 12, 311-316

J.R. Fuxa and J.P. Geaghan (1983)
Multiple-regression analysis of factors affecting prevalence of nuclear polyhedrosis virus in Spodoptera frugiperda (Lepidoptera: Noctuidae) populations
Environmental Entomology 12 (2), 311-316
Abstract: Pastures in southeastern Louisiana were sampled to determine percent mortality caused by a nuclear polyhedrosis virus (NPV) in Spodoptera frugiperda populations. Data were also collected on the host populations and environmental variables. Stepwise multiple-regression analysis indicated that overwinter NPV in the soil, but not S. frugiperda population density, was an important variable relative to prevalence of the disease. Time of year was another consistently important independent variable. When time was dropped from the model, a temperature variable partially compensated for its absence. Other variables that entered the models included precipitation, presence of cattle, percent ground cover, plowing of the pasture, grass height, percent silt in the soil, and host plant species in the pasture.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
population dynamics/epizootiology
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Spodoptera frugiperda	Grasses/turf/rangeland	U.S.A. (mid S)
Alphabaculovirus spofrugiperdae (entomopathogen)	Spodoptera frugiperda	Grasses/turf/rangeland	U.S.A. (mid S)