Blue Grama

The application of biosolids also increases the nutritional value of blue grama. Tissue levels of nitrogen, phosphorus, potassium, and crude protein increased to recommended tissue concentrations with biosolids treatments. Trace metals in blue grama grass did not increase during the study, thereby eliminating concerns that toxic amounts of these elements could be transferred to grazing animals. 

In Arizona, a 17-year study indicated that Opuntia species have increased because of overgrazing (Glendening, 1952) (Fig. 6.15). In New Mexico, increased growth of 0. imbricata was reported at the expense of valuable blue grama grass (Pieper, 1971), and in the Central Plains area of Colorado 0. polyacantha is in pest proportions (Bement, 1968). 

Beevers,H., Stiller,M.L., Butt,V.S. Metabolism of the organic acids. In Plant physiol. Ste-wart,F.C. (ed.), Vol. 4, pp. 119-262. New York Academic Press 1966 Bement,R.E. Plains prickly pear relation to grazing intensity and blue grama yield in central Great Plains. J. Range Manage 21,83-86 (1968)... 

---