Environmental Entomology (1986) 15, 726-732

R.K. Jansson and Z. Smilowitz (1986)
Influence of potato persistence, foliar biomass, and foliar nitrogen on abundance of Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)
Environmental Entomology 15 (3), 726-732
Abstract: Abundance of the Colorado potato beetle, Leptinotarsa decemlineata (Say), was compared on cultivars of potato that differed in time to maturity (persistence), foliar biomass, and foliar concentrations of N. Longer-season cultivars produced more (although not consistently significant) foliage than shorter-season cultivars: Foliar concentrations of N were higher in most longer-season cultivars than in shorter-season cultivars. Abundance of beetles was not significantly different among most cultivars on most sample dates. Beetle abundance was significantly positively correlated with cultivar persistence, foliar biomass, and foliar N concentration. Multiple regression techniques indicated that foliar N was a better predictor of beetle abundance than foliar biomass.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Richard K. Jansson

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Leptinotarsa decemlineata	Potato (Solanum tuberosum)	U.S.A. (NE)