Aug 07 2012
Program or topic
Adaptive nitrogen management for reduced nitrous oxide losses
Department(s) or unit(s)
Dept. of Crop and Soil Sciences
Harold Van Es
Professor, Crop and Soil Sciences
Bradfield Hall, Room 1005
This research-extension program aims to use of computational tools to help farmers reduce nitrogen input to crops, especially maize. Lower nitrogen fertilizer use reduces nitrous oxide losses and the associated global warming impact.
Field and lab experimentation are combined with modeling and software development to help improve N management and limit nitrous oxide losses. The web-enabled Adapt-N software tool uses real-time weather information with a dynamic simulation model to help farmers improve their N management and reduce losses. This is a win-win approach where farmers reduce their input costs for fertilizer, while the environmental impacts – especially nitrate leaching and nitrous oxide losses – can be reduced. Since N fertilization of maize in the US accounts for about 3-4% of total greenhouse gas losses, the potential positive effects are considerable.
For more information
- Moebius-Clune, B.N., van Es, H.M., Idowu, O.J., Schindelbeck, R.R., Kimetu, J.M., Ngoze, S., Lehmann, J., Kinyangi, J.M., 2011. Long-term Soil Quality Degradation along a Cultivation Chronosequence in Western Kenya. Agriculture Ecosystems and Environment 141:86-99.
- Bilgili, A.V., F. Akbas, and H.M. van Es. 2011. Combined Use of Hyperspectral VNIR Spectroscopy and Kriging Methods to Predict Soil Variables Spatially. Precision Agriculture 12:395–420.
- Graham, C.J., H.M. van Es, J.J. Melkonian, and D.A. Laird. 2010. Improved nitrogen and energy use efficiency using NIR estimated soil organic carbon and N simulation modeling. In: D.A. Clay and J. Shanahan. GIS Applications in Agriculture – Nutrient Management for Improved Energy Efficiency. pp 301-325, Taylor and Francis, LLC.