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Nitrogen fertilizers' impact on lawn soils
Date:11/4/2011

e period when soil conditions were favorable to high rates of denitrification. While small amounts of nitrogen were transported to groundwater and streams, the majority of fertilizer nitrogen inputs were retained in lawn soils.

The results from this study are encouraging, but much more work needs to be done to apply the results to a wider range of soil, climatic, and lawn management conditions. While most of the nitrogen losses from denitrification were in the form of nitrogen gas, the results suggest the possibility of significant losses as nitrous oxide, a greenhouse gas more potent than carbon dioxide. Continuing excessive fertilizer applications will likely saturate soil storage capacity, resulting in the harmful transfer of nitrogen to surface and ground water.

The complete results from this study can be found in the November/December issue of Journal of Environmental Quality.


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Contact: James Giese
jgiese@sciencesocieties.org
608-268-3976
American Society of Agronomy
Source:Eurekalert

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