Reducing non-point DOC and nitrogen exports from rice fields: A pilot study and quantitative survey to determine the effects of different hydrologic management practices : Deliverable 15.3 Final Report

Bachand and Associates, Hydrofocus, Inc., University of California, Davis, U.S. Geological Survey, Ducks Unlimited, Contra Costa Water District (2006) Reducing non-point DOC and nitrogen exports from rice fields: A pilot study and quantitative survey to determine the effects of different hydrologic management practices : Deliverable 15.3 Final Report. Auburn, CA, Bachand and Associates,

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Abstract

Rice cultivation at any level in the Sacramento–San Joaquin Delta (existing or expanded) compels the need to quantify surface and subsurface loads of dissolved organic carbon (DOC), disinfection byproduct precursors (DBPPs) and nitrogen. This information can be used to develop Best Management Practices (BMPs) to reduce export of these constituents in order to improve drinking water quality. Although rice cultivation in the Delta is relatively limited, several factors outside of this research could contribute to increased rice acreage in the Delta: • Recently developed rice varieties seem more suitable for the Delta climate than earlier varieties which required warmer conditions; • Previous economic analyses (Appendix A.10) suggest rice is more profitable than corn, a dominant land use in the Delta; • Recent studies on wetlands at Twitchell Island suggest rice production can help mitigate oxidative subsidence (Miller et al. 2000); • The different oxidative states that result from flooding in rice as compared to those found in crops that require drained soils may help control crop specific weeds and nematodes when rice is incorporated into a crop rotation; and • Providing flooded conditions during a greater part of the year than other crops may benefit water birds. ... (PDF contains 249 pages)

Item Type: Monograph or Serial Issue
Title: Reducing non-point DOC and nitrogen exports from rice fields: A pilot study and quantitative survey to determine the effects of different hydrologic management practices : Deliverable 15.3 Final Report
Corporate Creator/Author: Bachand and Associates, Hydrofocus, Inc., University of California, Davis, U.S. Geological Survey, Ducks Unlimited, Contra Costa Water District
Date: 2006
Publisher: Bachand and Associates
Place of Publication: Auburn, CA
Additional Information: SWRCB Agreement No. 03-165-555-0
Subjects: Management
Pollution
Agriculture
Environment
Item ID: 2072
Depositing User: Dr. Philip Bachand
Date Deposited: 13 May 2009 16:51
Last Modified: 29 Sep 2011 19:45
URI: http://aquaticcommons.org/id/eprint/2072

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