Nitrogen mineralization and nitrifier activity in limed and urea‐treated soils
作者:
Yadvinder Singh,
E.G. Beauchamp,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1986)
卷期:
Volume 17,
issue 12
页码: 1369-1381
ISSN:0010-3624
年代: 1986
DOI:10.1080/00103628609367795
出版商: Taylor & Francis Group
关键词: Nitrite accumulation;soil pH;nitrifier population enrichment
数据来源: Taylor
摘要:
The effect of liming on mineralization and soil nitrifier activity (NA) was investigated with Brookston clay (pH 5.7) and Haldimand clay (pH 4.7). Liming increased the rate of mineralization in both soils but at a rate about 4‐times greater in Haldimand clay than Brookston clay. A significant increase in N mineralization due to liming occurred in both soils only when pH was raised above 6.0. The rate of mineralization was greater than nitrification in the Haldimand soil resulting in NH4+accumulation. Nitrifier activity increased with liming of Brookston clay, but decreased in Haldimand clay after 15 days of incubation. There was a significant increase in nitrifier activity due to liming from 15 to 60 days in Haldimand clay. After 60 days nitrifier activity in limed treatments increased by five times over the unlimed control.
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