Arizona Range Grasses
Their Description, Forage Value, and Grazing Management
Cooperative Extension,College of Agriculture & Life Sciences, The University of Arizona

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JUNEGRASS
Koeleria macrantha (Ledeb.) J.A. Schult


Description

Growth habit: A medium to small perennial bunchgrass 1 to 1 1/2 feet tall.
Color: Bright green when growing in good light; light green in moderate shade.
Leaves: One and one-half to 5 inches long; narrow, flat, sharp-pointed and ridged and rough on the upper surface; arising largely from the base of the plant.
Inflorescence: Seed stalks numerous, slender, and 1 to 1 1/2 feet tall. The inflorescence is a dense, cylindrical shiny spike 1 1/2 to 6 inches long, 3/8, inch wide, tapering at both ends.
Season: Cool Season
Origin: Native


Figure 43.—Junegrass (Koeleria macrantha), plant and spikelet

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Occurrence

Moderately abundant in all counties in the state except Yuma at elevations from about 4,000 to 9,000 feet. Although this grass grows on nearly all soil types, it is most abundant and makes the best growth on sandy sites. The grass rarely forms pure stands but is one of the most widely distributed of all western grasses.

Forage Value

Junegrass is rated as good forage for all classes of livestock. It greens up earlier in the spring than most grasses and is often overgrazed because of this trait. It grows most actively and produces the bulk of its feed during the summer after the rains begin.


Grazing Management

Care must be taken not to overgraze Junegrass in the spring when it first greens up. When the plants are grazed during the growing season some seed stalks should be left for seed production and to make certain that the vegetative parts of the plants will not be grazed too closely.


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Document located http://cals.arizona.edu/pubs/natresources/az1272/
published
2002
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