Vermiculite addition to soil decreases N water pollution by over 30%

Vermiculite addition to soil decreases N water pollution by over 30% The large amounts of nitrogen-containing mineral fertilisers in industrial agriculture are leading to water pollution with effects such as eutrophication and death of aquatic life. There is therefore a need for techniques to keep N in the soil to prevent leaching in waters. Here, we tested the effect of the addition of vermiculite, a phyllosilicate mineral, to the soil, on fertiliser NH4 +-N retention in laboratory experiments during 14–45 days. The added amount of vermiculite was twice the amount of the nitrogen fertilizer added. Our results show that addition of vermiculite increases NH4 +-N retention by over 30%, compared to a control. Adding vermiculite is thus a promising technique to control the eutrophication of water systems as well as reducing agriculture cost. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Chemistry Letters Springer Journals

Vermiculite addition to soil decreases N water pollution by over 30%

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer International Publishing Switzerland
Subject
Environment; Environmental Chemistry; Ecotoxicology; Pollution, general; Analytical Chemistry; Geochemistry
ISSN
1610-3653
eISSN
1610-3661
D.O.I.
10.1007/s10311-017-0631-5
Publisher site
See Article on Publisher Site

Abstract

The large amounts of nitrogen-containing mineral fertilisers in industrial agriculture are leading to water pollution with effects such as eutrophication and death of aquatic life. There is therefore a need for techniques to keep N in the soil to prevent leaching in waters. Here, we tested the effect of the addition of vermiculite, a phyllosilicate mineral, to the soil, on fertiliser NH4 +-N retention in laboratory experiments during 14–45 days. The added amount of vermiculite was twice the amount of the nitrogen fertilizer added. Our results show that addition of vermiculite increases NH4 +-N retention by over 30%, compared to a control. Adding vermiculite is thus a promising technique to control the eutrophication of water systems as well as reducing agriculture cost.

Journal

Environmental Chemistry LettersSpringer Journals

Published: Apr 19, 2017

References

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