Journal article

Publication year: 2003

Pages: 594-600

Journal: Journal of Plant Nutrition and Soil Science

Volume number: 166

Issue number: 5

ISSN: 1436-8730

eISSN: 1522-2624

DOI Link: https://doi.org/10.1002/jpln.200321163

Publisher: Wiley-VCH Verlag

Abstract: 

Laboratory incubations were conducted to study the effect of sodium chloride (NaCl) on denitrification and respiratory gases (CO2, O-2) from soil treated with ammonium or nitrate and incubated at 20% moisture. The same samples were assayed for denitrifying enzyme activity (DEA) after incubation at 40% moisture with glucose and NO3-. Under aerobic conditions (20% water content), a flush of activity was observed at 6 hours after start of incubation and subsided to negligible levels at 12 hours. Sodium chloride significantly depressed N2O and CO2 emissions and O-2 consumption. Significantly more loss of N2O occurred from NH4+- than NO3--treated soil at all NaCl levels and was attributed to higher microbial activity. A highly significant positive correlation was obtained between N2O emission and respiratory gases. The respiratory quotient (CO2 evolved/O-2) was higher for NH4+-treated soil and decreased with the amount of NaCl. At 40% moisture, N2O emissions were higher than at 20% and peaked at 37 hours followed by a sharp decrease. Short-term incubations of soil with NH4+ or NO3- did not have an effect on denitrifying enzyme activity (DEA) while NaCl had a positive effect, particularly in previously NO3--treated soil.

Harvard Citation style: Azam, F. and Müller, C. (2003) Effect of sodium chloride on denitrification in glucose amended soil treated with ammonium and nitrate nitrogen, Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde, 166(5), pp. 594-600. https://doi.org/10.1002/jpln.200321163

APA Citation style: Azam, F., & Müller, C. (2003). Effect of sodium chloride on denitrification in glucose amended soil treated with ammonium and nitrate nitrogen. Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde. 166(5), 594-600. https://doi.org/10.1002/jpln.200321163