Tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-61]-N,N′-dimethylurea) pellets containing 20 and 40% active ingredient were applied at 0.6 and 1.1 kg ha-1 during May 1979 to range sites dominated by mountain big sagebrush (Artemisia tridentata subsp. vaseyana Nutt.), threetip sagebrush (A. tripartita Rydb.), and gray horsebrush (Tetradymia canescens DC) to determine effectiveness for shrub control and response of associated grasses and forbs. Sagebrush densities were significantly less (P is lesser than or equal to .05) in 1984 on all herbicide treated sites compared to the untreated sites. The 1.1 kg ha-1 (20P) treatment reduced the densities of all shrubs more than other treatments at all sites. Grass production was significantly (P is lesser than or equal to .05) greater on plots treated at 1.1 kg ha-1 (40P) at the mountain big sagebrush and threetip sagebrush sites. Forb production did not respond to tebuthiuron treatments. Grass production was not increased or decreased significantly by any treatment at the gray horsebrush site. For sites with similar soil and environmental conditions, the 1.1 kg ha-1 (40P) treatment should give sufficient control of sagebrush to allow for significant increases in total grass and forb production. 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.