Use of Herbicides for Planting Site Preparations in the Southwest
Abstract:Competing vegetation, especially perennial grass, takes soil moisture that is needed to reproduce ponderosa pine in the Southwest. Soil moisture trends were followed on herbicide-sprayed, scalped, and untreated plots near Flagstaff, Ariz., in 1961 and 1962. The study area was almost completely occupied by Arizona fescue and mountain muhly. Soil moisture was significantly higher on herbicide-sprayed plots, particularly for the 0- to 8-inch zone, than on the scalped or untreated plots. The differences were greater during an abnormally dry season than during a normal one.
Document Type: Journal Article
Affiliations: Associate Silviculturist, Rocky Mountain Forest and Range Expt. Sta., U. S. Forest Service, stationed at Flagstaff, Ariz., in cooperation with Northern Arizona University
Publication date: July 1, 1969
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