Soil & Crop Sciences Professional Masters Projects
Permanent URI for this collection
Browse
Recent Submissions
Item REVIEW OF ISOTOPIC METHODS FOR NITRATE SOURCES IDENTIFICATION IN SURFACE AND GROUNDWATERPei, Yunxuan (2021-05)Nitrate pollution in surface and groundwater has become a worldwide environmental problem. For better water quality management, it’s important to know total NO3- loads and identify the proportional contributions from multiple NO3- sources. Stable isotopes of NO3-, the δ15N value and the δ18O value, have been frequently used to identify NO3- sources in water. However, due to complexity in the N cycle, mixing multiple sources and fractionation during biological processes often caused biased and uncertain results. One possible solution is to use SIAR, a linear mixing model running in R, to estimate the proportional contribution from multiple NO3- sources. Unfortunately, SIAR cannot distinguish manure and septic sources, which requires the analysis of other chemical components, such as sodium, caffeine. A research approach is proposed to pilot a unified method to identify NO3- sources, determine their isotopic signature, and estimate each source’s contribution by using the Fall Creek Watershed as a proof- of-concept study area.Item Agroforestry Management Plan for Three Story Farm, Ithaca, New York, USACoville, Robert (2020-09)Item Using Mask R-CNN to Perform Crop Field IdentificationXie, Yuchen (2020-09)Item Prospects for Rice Production in Equatorial Guinea: Opportunities and ChallengesLuo, Chenxi (2020-09)