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This article in SSSAJ

  1. Vol. 35 No. 5, p. 752-755
    Received: Mar 12, 1971



Volatilization of Nitrogen-Containing Compounds from Beef Cattle Areas1

  1. L. F. Elliott,
  2. G. E. Schuman and
  3. F. G. Viets2



The release of NH3 plus steam-distillable organic N compounds to the atmosphere from a small beef feedlot and a pasture was measured. Acid traps placed next to the feedlot and 0.8 km from the feedlot averaged 148 and 16 kg/ha per yr NH3 plus steam-distillable organic N compounds, respectively. The same traps averaged 21 and 3.3 kg/ha per yr, respectively, of organic N compounds that were not recovered by the 3-min steam distillation procedure. Feedlot disturbances, such as manure mounding, increased volatilization of N compounds. Ammonia plus steam-distillable organic N compounds trapped near a cattle pasture and cropland averaged 15 and 11 kg/ha per yr, respectively. Organic N compounds not recoverable by the 3-min steam distillation were very low in the areas.

Normally, steam distillation values represent only NH3; however, in this case, other N-containing compounds were distilled over and titrated as NH3.

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