A study of jointworm larvae (Tetramesa Walk.) feeding in 4 native range grasses of Idaho was conducted to determine effects on their hosts. These insects were responsible for a decrease in the length of reproductive culms of red threeawn (Aristida longiseta Steud.), bottlebrush squirreltail (Sitanion hystrix (Nutt.) J.G. Smith), sand dropseed (Sporobolus cryptandrus (Torr.) A. Gray), and needleandthread (Stipa comata Trin. and Rupr.) Jointworms caused a decrease in the number of spikelets produced per inflorescence in bottlebush squirreltail and needleandthread, and a decrease in the inflorescence length of sand dropseed. They caused a decrease in seed weight, percentage germination, and germination rate of all 4 grasses. By adversely affecting native grasses, these insects contribute significantly to the degradation of valuable rangelands, and their control may be desirable. 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.