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Improving nitrogen recovery from green manure on contrasting soil types under cold climate conditions

Frøseth, Randi Berland; Hansen, Sissel; Thorup-Kristensen, Kristian and Bleken, Marina Azzaroli (2016) Improving nitrogen recovery from green manure on contrasting soil types under cold climate conditions. 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. 72-73.

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

Summary

We evaluated the effects of various strategies for green manure management, including biogas production and using the herbage-based digestate as fertilizer, on the yield and N recovery of a subsequent spring barley crop. Of the various green manure herbage measures tested, the digestate strategy was be the most promising option with regard to reduced risk of N losses and improved N recovery by a subsequent spring barley crop. Removal of the herbage reduces the risk of N losses from the crop rotation, since such losses are highly dependent upon the N input and weather conditions. This study suggests that
fundamental model changes are needed for simulating the effects of low temperatures on N mineralization from fresh plant material.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:N-mineralization green manure biogas digestate N-availability grønngjødsel Nitrogenmineralisering grønngjødsel
Subjects: Soil > Nutrient turnover
Crop husbandry
Research affiliation: Denmark > KU - University of Copenhagen > KU-LIFE - Faculty of Life Sciences
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:31210
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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