Large areas of Utah's rangeland have been seeded to introduced wheatgrasses, and many of these areas are now infested with the black grass bug (Labops hesperius). A study of the effects of this insect pest on several native and introduced grasses was conducted on three experimental study plots in southwestern Utah. The data revealed that the six introduced grass species studied, growing in small monocultures, contained considerably more black grass bugs than did the native range grasses in nearby areas. Thus, the six monoculture grass species were more susceptible to grass bug damage than were the native range grasses. Moreover, variations in black grass bug populations within the six grass monocultures also revealed differences in susceptibility. Phenology comparison data revealed there was no correlation between the phenological stage of plant development and the stage of black grass bug instar development, therefore ruling out an accurate means of determining time of spraying in relation to plant maturation. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.