Abstract
ABSTRACT A POLLUTION potential from beef A manure has evolved in the feedlot industry. Considerable interest has developed in the application of large quantities of beef manure on land. Research to evaluate the amount of nitrogen volatilized as ammonia and the organic and inorganic nitrogen transformations in a soil manure mixture is reported. Large soil columns (38 cm in diameter by 91 cm in length) were used to more closely approximate field conditions. Two treatments (pH = 12 and pH =7.5) were used to evaluate the effect of soil pH on the nitrogen cycle. The columns were incubated for 30, 60, and 90 day periods. Ammonia volatilization was much greater from the high pH treatment while carbon dioxide evolution was much higher from the low pH treatment. Approximately 10 percent of the total nitrogen from the low pH treatment was lost while a 20 percent loss occurred in the high pH treatment.
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