Decrease in soil microbial activity and biomasses owing to nitrogen amendments
(1983) In Canadian Journal of Microbiology 29(11). p.1500-1506- Abstract
- Microbial biomass and soil respiration rate decreased after application of 150 kg NH4NO3–N∙ha−1 to different coniferous forest podzols. The decrease was already found 3 months after fertilization and was still evident after 3–5 years. Changes in pH, organic matter, or water content in the soils could not explain the decreases. In laboratory experiments, several unfertilized forest soils were treated with 2 mg of NH4NO3–N or of urea–nitrogen∙g wet soil−1. The ammonium nitrate addition resulted in severe depressions of the respiration rates during and up to 175 days of incubation and the decrease was evident after about 1 week. The urea treatment initially increased the respiration rate of the soils, but this appeared to be a transitory... (More)
- Microbial biomass and soil respiration rate decreased after application of 150 kg NH4NO3–N∙ha−1 to different coniferous forest podzols. The decrease was already found 3 months after fertilization and was still evident after 3–5 years. Changes in pH, organic matter, or water content in the soils could not explain the decreases. In laboratory experiments, several unfertilized forest soils were treated with 2 mg of NH4NO3–N or of urea–nitrogen∙g wet soil−1. The ammonium nitrate addition resulted in severe depressions of the respiration rates during and up to 175 days of incubation and the decrease was evident after about 1 week. The urea treatment initially increased the respiration rate of the soils, but this appeared to be a transitory effect. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2226481
- author
- Söderström, Bengt LU ; Bååth, Erland LU and Lundgren, B.
- organization
- publishing date
- 1983
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Canadian Journal of Microbiology
- volume
- 29
- issue
- 11
- pages
- 1500 - 1506
- publisher
- National Research Council Canada
- ISSN
- 0008-4166
- language
- English
- LU publication?
- yes
- id
- 665dfd71-feac-4f21-9502-c40991e83ec8 (old id 2226481)
- date added to LUP
- 2016-04-01 11:43:45
- date last changed
- 2020-09-23 15:14:11
@article{665dfd71-feac-4f21-9502-c40991e83ec8, abstract = {{Microbial biomass and soil respiration rate decreased after application of 150 kg NH4NO3–N∙ha−1 to different coniferous forest podzols. The decrease was already found 3 months after fertilization and was still evident after 3–5 years. Changes in pH, organic matter, or water content in the soils could not explain the decreases. In laboratory experiments, several unfertilized forest soils were treated with 2 mg of NH4NO3–N or of urea–nitrogen∙g wet soil−1. The ammonium nitrate addition resulted in severe depressions of the respiration rates during and up to 175 days of incubation and the decrease was evident after about 1 week. The urea treatment initially increased the respiration rate of the soils, but this appeared to be a transitory effect.}}, author = {{Söderström, Bengt and Bååth, Erland and Lundgren, B.}}, issn = {{0008-4166}}, language = {{eng}}, number = {{11}}, pages = {{1500--1506}}, publisher = {{National Research Council Canada}}, series = {{Canadian Journal of Microbiology}}, title = {{Decrease in soil microbial activity and biomasses owing to nitrogen amendments}}, volume = {{29}}, year = {{1983}}, }