Low-Dose Glyphosate Does Not Control Annual Bromes in the Northern Great Plains

摘要: Annual bromes (downy brome and Japanese brome) have been shown to decrease perennial grass forage production alter ecosystem functions in northern Great Plains rangelands. Large-scale chemical control might be a method for increasing rangeland production. Although fall application has the most effective least likely impact co-occurring native species, spring germination of downy may reduce efficacy fall-only herbicide application. We assessed low glyphosate dose rate (210 g ha−1) applied rangelands or on nontarget species annual abundance at two sites eastern Montana over 2 yr. tested following hypotheses: (1) effects are greater with application, (2) necessary control, (3) is sufficient brome. Few occurred; dicotyledonous sp...