96-5 Biochar Impacts on Nitrous Oxide Emissions from Switchgrass Production.
See more from this Division: ASA Section: Environmental QualitySee more from this Session: Greenhouse Gas Emissions from Agriculture: I
Monday, November 3, 2014: 2:00 PM
Long Beach Convention Center, Room 202A
One reported benefit of biochar amendment to soils is reduced N2O emission. Nitrous oxide emissions in response to application of N fertilizers were monitored at four sites where switchgrass is grown in marginally-productive soils with and without switchgrass-derived biochar amendment. In 2013, N2O emissions were low or below detection at three of the four experimental sites. However, significant emissions were observed at the wettest site and there was evidence of lower N2O emissions from biochar amended soils. Measurements are continuing in 2014. Overall low nitrous oxide emissions with switchgrass production likely result from high N use efficiency and little excess soil a nitrate, but impact of biochar application is not fully understood.
See more from this Division: ASA Section: Environmental QualitySee more from this Session: Greenhouse Gas Emissions from Agriculture: I