. Preliminary notes on important vegetative species of Region 8 : plant-soil correlation contribution. Vegetation surveys Southwest, New; Plant-soil relationships Southwest, New. - 8 - BLUE GRAMA. Fig. 3 ™ Response of blue grama to different degrees of grazing. protect the surface from erosion by a dense vegetative cover and so completely utilize -the factors of the habitat that other species "will not be able to invade or compete with it. Blue grama, because of its high palatability and occurrance in readily accessible locations, has been generally very heavily grazed. !Ihe condition of
. Preliminary notes on important vegetative species of Region 8 : plant-soil correlation contribution. Vegetation surveys Southwest, New; Plant-soil relationships Southwest, New. - 8 - BLUE GRAMA. Fig. 3 ™ Response of blue grama to different degrees of grazing. protect the surface from erosion by a dense vegetative cover and so completely utilize -the factors of the habitat that other species "will not be able to invade or compete with it. Blue grama, because of its high palatability and occurrance in readily accessible locations, has been generally very heavily grazed. !Ihe condition of blue grama plants as found under general grazing con- ditions of this region is shown by the center plant of Figure 3» In this condition and in the still further weakened condition as shown to the right, deeper rooted invaders and weeds easily obtain a foothold* The lower ranges of blue grama with lighter rainfall and those characterized by the major portion of the annual precipitation occur- ring within the growing season have been heavily invaded by the less desirable erosion control (Figure 2) and non-palatable, snakeweed, three awn, rabbit brush and annual weeds. The overgrazed blue grama on higher elevations where the annual precipitation is distributed. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Flory, Evan L; Trussell, D. F; Calkins, Hugh G; United States. Soil Conservation Service. Region 8. Albuquerque, NM : United States. Soil Conservation Service. Region 8
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