Nitrogen (N) fertilizer at rates of 0, 22, and 34 kg/ha was applied annually in the spring or fall over a 5-year period to a mixed grass prairie. Major species present were blue grama (Bouteloua gracilis), western wheatgrass (Agropyron smithii), and dryland sedges (Carex Sp.). Slim leaf goosefoot (Chenopodium leptophyllum) and other annual and perennial forbs were also present. Total herbage production, crude protein content, mineral concentrations, species composition and water use data were collected. Total herbage yields and crude protein from all the fertilizer treatments were significantly greater as compared with the control. Nearly all of the variation in phosphorus (P), calcium (Ca), potassium (K), and magnesium (Mg) concentrations and species composition were associated with the seasonal distribution of precipitation (years) and not with N-fertilization treatments. 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.