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Research Project:
Improving Soil and Nitrogen Management Systems for Sustaining Land and Water Quality
Location:
Fort Collins Soil Plant Nutrient Research (SPNR)
Project Number: 5402-12130-007-00
Project Type:
Appropriated
Start Date: May 06, 2001
End Date: May 05, 2006
Objective:
a) Elucidate factors to improve soil quality and nutrient-use-efficiency (NUE), b) Develop mgmt to increase NUE and decrease residual soil nitrate (RSN), c) Develop sustainable low/no-till practices for irrigated crops, d) Determine ways to prevent surface/ground water contamination, and enhance microbial mediation e) Develop/test/calibrate mgmt tools to evaluate best mgmt practices to decrease RSN, and f) Determine soil/plant physiology factors to improve NUE for irrigated, high-value crops on saline soils.
Approach:
Laboratory, greenhouse, and micro/small-plot, and field studies are conducted in various locations with various cooperators. Stable C and N isotope technology is used to understand basic soil and biological processes. Agronomic and horticultural crops are used, depending on study objectives. Water management includes sprinkler and furrow irrigation. Nutrient management (especially N) techniques include models, GIS, remote sensing, yield monitoring, and quick field tests to increase nutrient use efficiency (NUE). Low/no-till are incorporated into soil and crop rotation management practices. Bioremediation studies are conducted on methods to remove excess contaminant using innocuous C sources. Evaluations are made of practices to enhance microbial mediation, protect the environment, and remediate contaminated soil and groundwater. Soil/plant physiological and advanced technology (precision farming, remote sensing and modeling) studies are conducted to improve NUE on irrigated, saline soils. The applicability of models and decision tools to provide real-time, on-farm management approaches will be evaluated.
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