102344
Poster Number 456-907
See more from this Division: ASA Section: Environmental Quality
See more from this Session: Environmental Quality Poster
Abstract:
Three intensively drained agricultural field sites characterized by highly variable water table fluctuations were selected for a more detailed investigation on the influence of nitrate reduction on nitrogen (N) drainage losses. The fields were equipped with drainage stations to continuously monitor drainage discharge and drainage N losses. The fields were further equipped with piezometers and redox probes at variable depth to monitor water table fluctuations and redox dynamics, as well as nitrogen transformation as a function of depth. Results from three years of measurement were used to compare model predictions of N losses with actual measured losses, and to evaluate the influence of nitrate reduction on resulting drainage N losses.
See more from this Division: ASA Section: Environmental Quality
See more from this Session: Environmental Quality Poster