PACE Turf - Turfgrass Information Center

Evaluating the sodium hazard in your irrigation water

In the June 28, 2010 Super Journal report, "Evaluating the sodium hazard in your irrigation water" (188 KB pdf document), we present some new tools that will help you to get a more accurate estimate of the sodium hazard in your irrigation water. In order to help identify the most accurate estimate of sodium hazard, we have consulted several publications (including FAO Handbook 29, which is the standard guideline that most researchers and practitioners rely upon) and academics (most notably Dr. Don Suarez of the USDA Salinity Laboratory in Riverside, CA), and based on this input we have generated a mathematical model and accompanying spreadsheet. The spreadsheet will allow you to rapidly compute the sodium hazard for your irrigation water, based on data from your water quality reports.

Project title: Tools for estimating sodium hazard based on irrigation water quality reports

Principal investigator: Larry Stowell, Ph.D., CPAg and Wendy Gelernter, Ph.D.

Irrigation Water Guidelines

Use these Irrigation Water Guidelines to help you evaluate your irrigation water quality.

We hope that this information has been useful to you. If you have any questions, please don't hesitate to contact us here at PACE Turf. If you would like to have access to more practical, science–based information on a regular basis, please consider signing up for PACE Turf's turf management information service. Read more about PACE Turf's work and about their information service's member benefits .

Using virtual irrigation to forecast disease

Poster presentation at the 2008 American Phytopathological Society meetings, July 26 - 30, Minneapolis, MN.

Authors: Larry Stowell and Wendy Gelernter (PACE Turfgrass Research Institute) and Frank Wong and Chi-Men Chen, University of California Riverside

Click here to view the poster (130 KB)

Summary: Recent research suggests that soil moisture impacts the severity of turf diseases such as anthracnose caused by Colletotrichum cereale, Pythium root dysfunction caused by Pythium volutum, gray leaf spot (GLS) caused by Magnaporthe grisea and brown ring patch (BRP) caused by Waitea circinata var. circinata. The virtual irrigation audit, a simple computer model that predicts the size and location of both wet and dry areas on golf course turf, was designed to provide diagnosticians and turf managers with a precision turfgrass management tool for disease and soil moisture management. In this study, the virtual audit was successfully used to describe the occurrence of GLS and BRP on golf course turf.

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