Comparison of chemical methods of assessing potentially available organic nitrogen in soil1
作者:
C. Gianello,
J. M. Bremner,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1986)
卷期:
Volume 17,
issue 2
页码: 215-236
ISSN:0010-3624
年代: 1986
DOI:10.1080/00103628609367709
出版商: Taylor & Francis Group
关键词: Phosphate‐borate buffer method;KCl method;acid KMnO4method;alkaline KMnO4method;CaC12‐autoclave method;NaHCO3UV method;aerobic incubation method;anaerobic incubation method;N mineralization potential
数据来源: Taylor
摘要:
We recently developed two rapid and precise chemical methods of assessing potentially available organic N in soils. One method involves determination of the ammonia‐N produced by steam distillation of the soil sample with pH 11.2 phosphate‐borate buffer solution for 8 min. The other involves determination of the ammonium‐N produced by treatment of the soil sample with 2MKCl solution at 100°C for 4 hours. Studies using 33 Brazilian soils showed that the results obtained by these methods were highly correlated with those obtained by anaerobic and aerobic incubation methods of assessing potentially available organic N in soil.
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