rainfall areas where high rates of nitrogen 
fertilizers are used. 
Fertilization has one more benefit for returns 
from rangelands. Nitrogen, phosphorus, potas- 
sium, and sulfur fertilizers have been used 
alone or in combinations to obtain and main- 
tain a favorable balance of legumes, other 
forbs, and grasses for high-quality herbage 
and for extended periods of green growth. 
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61 
