Perennial wheatgrasses were seeded in fall, 1967 and 1968 on fallows created by atrazine at 1 lb./acre applied the previous fall or by mechanical means. Atrazine residue in the soil during seedling establishment (1.5 years after application) ranged from < 0.04 to 0.15, 0.09, 0.08, and 0.06 ppm, respectively, in the 0-1, 1-2, 2-3, and 3-4-inch soil samples. Residue was less than 0.04 ppm from 4 to 8 inches. Seedlings of perennial grasses were injured or killed by these residue levels. However, poor stands were obtained at only two of seven locations in 1969 with crested wheatgrass. Generally, stands of intermediate and pubescent wheatgrasses were superior to crested wheatgrass. Species response was also evaluated on fallows created by 0.5, 1.5, and 2.0 lb./acre atrazine. 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.