Abstract
AbstractField tests were conducted annually near Delhi, Ontario from 1977 to 1981 to evaluate blacklight and sex attractant traps for monitoring adult populations of the darksided cutworm, Euxoa messoria (Harris), in the major tobacco-producing area. There were no significant differences between the catches of sex attractant traps set at 1.0 m and 0.5 m above ground level. Sex attractant traps were superior to blacklight traps for monitoring populations of this pest species. There was a variation in abundance from year to year, but the time of peak occurrence of E. messoria adults was the same in each of the 5 years.
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