TY - JOUR
T1 - AMMONIA VOLATILIZATION FROM SURFACE-APPLIED UREA
T2 - EFFECT OF HYDROGEN ION BUFFERING CAPACITY.
AU - Ferguson, R. B.
AU - Kissel, D. E.
AU - Koelliker, J. K.
AU - Basel, Wes
PY - 1984
Y1 - 1984
N2 - The influence of soil pH and soil cation exchange capacity on ammonia volatilization from surface applied ammoniacal nitrogen has been reported in previous studies. Since the hydrolysis of urea-containing N fertilizers causes an increase in alkalinity, a soil's inherent H** plus buffering capacity (defined as the soil's total acidity, comprised of exchangeable acidity plus non-exchangeable, titratable acidity), should exert a dominant influence on the maximum soil pH at the site of urea fertilizer application. The objective of this study was to demonstrate the importance of a soil's H** plus buffering capacity in affecting NH//3 volatilization from surface-applied urea. It is concluded from this work that H** plus buffering capacity of a soil is a better indicator of NH//3 loss potential than a soil's initial pH.
AB - The influence of soil pH and soil cation exchange capacity on ammonia volatilization from surface applied ammoniacal nitrogen has been reported in previous studies. Since the hydrolysis of urea-containing N fertilizers causes an increase in alkalinity, a soil's inherent H** plus buffering capacity (defined as the soil's total acidity, comprised of exchangeable acidity plus non-exchangeable, titratable acidity), should exert a dominant influence on the maximum soil pH at the site of urea fertilizer application. The objective of this study was to demonstrate the importance of a soil's H** plus buffering capacity in affecting NH//3 volatilization from surface-applied urea. It is concluded from this work that H** plus buffering capacity of a soil is a better indicator of NH//3 loss potential than a soil's initial pH.
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U2 - 10.2136/sssaj1984.03615995004800030022x
DO - 10.2136/sssaj1984.03615995004800030022x
M3 - Article
AN - SCOPUS:0021422736
SN - 0361-5995
VL - 48
SP - 578
EP - 582
JO - Soil Science Society of America Journal
JF - Soil Science Society of America Journal
IS - 3
ER -