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Nitrogen mineralization from clover leaves: Effect of soil type and low temperature

Bleken, Marina Azzaroli; Hansen, Sissel and Frøseth, Randi Berland (2016) Nitrogen mineralization from clover leaves: Effect of soil type and low temperature. In: Delin, Sofia (Ed.) Abstracts of 19th Nitrogen workshop: Efficient use of different sources of nitrogen in agriculture – from theory to practice, SLU, Skara, Sweden, N workshop, pp. 255-256.

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Online at: http://akkonferens.slu.se/nitrogenworkshop/wp-content/uploads/sites/18/2014/05/Nitrogen-Absracts-USB_ny.pdf

Summary

The period following the incorporation of N-rich leys into soil is crucial both for the N supply to the following crop and for the risk of N leaching. Soil-crop models used for exploring the possibility of improving the nitrogen recovery, generally assume that there is a stoichiometric relationship between carbon and nitrogen mineralization. Our aim was to study how temperature and soil type affect the net N mineralization relative to C mineralization of plant litter incorporated in soil. This knowledge is instrumental for improving the modelling of nitrogen dynamics after ploughing.
The experiment confirmed that N mineralization of N-rich plant material occurs even at 0 °C, and that the ratio of net mineralized N to mineralized C is larger at lower than at higher temperature.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:N-mineralization green manure C/N C-mineralization Nitrogenmineralisering grønngjødsel karbonmineralisering
Subjects: Soil > Nutrient turnover
Crop husbandry
Research affiliation: Norway > NMBU - Norwegian University of Life Sciences
Norway > NIBIO – Norwegian Institute of Bioeconomy Research
Norway > NORSØK - Norwegian Centre for Organic Agriculture
Deposited By: Hansen, Sissel
ID Code:31208
Deposited On:19 Feb 2017 08:09
Last Modified:19 Feb 2017 08:09
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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