Author:
Thistlewood H.M.A.,McMullen R.D.,Borden J.H.
Abstract
AbstractFirst-generation mullein bug, Campylomma verbasci (Meyer), nymphs damaged four major cultivars of apple in commercial and research orchards from 1982 to 1984. In commercial orchards, C. verbasci was ranked among the top three pests in 22 of 40 samples collected at harvest, and its damage exceeded the economic injury level of 1% culled apples in 17 of the samples. Injury was greatest in "Delicious" cultivars, for which a linear relationship was derived between population density and damage at harvest. Economic injury levels of one and four nymphs per tap are proposed for cvs. Golden and Red Delicious, respectively, in British Columbia.
Publisher
Cambridge University Press (CUP)
Subject
Insect Science,Molecular Biology,Physiology,Ecology, Evolution, Behavior and Systematics,Structural Biology
Reference21 articles.
1. Thistlewood H.M.A. 1986. The bionomics and monitoring of Campylomma verbasci (Meyer) on apple in the Okanagan Valley, British Columbia. Ph.D. thesis, Simon Fraser University, British Columbia. 199 pp.
2. Insects of the season (1919) in Ontario;Ross;Ent. Soc. Ont. Annu. Rep.,1920
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