Competition and herbage production studies were established on soil columns (1.2 m square) that were isolated from the surrounding soil by heavy plastic sheeting to a depth of 1.4 m. Some plots received only natural precipitation; some 1-1/2 times the growing-season precipitation, and some 2/3 the growing-season precipitation. These different moisture levels had no significant effect on herbage yields during the 3-year period. Plots of alfalfa yielded most. Plots containing Kochia yielded as much as those containing alfalfa the first year, but not thereafter. Crested wheatgrass consistently outyielded Russian wildrye. Adjacent natural field plantings of the same species provided evidence that both alfalfa and Kochia had roots below the plastic barrier and were obtaining moisture from adjacent soil. Alfalfa was least affected and Kochia most affected by a close (5-cm) harvest height. 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.