PACE Turf - Turfgrass Information Center

Super Journal: an online turf research resource

Super Journal is provided by PACE Turf as a free public service to the turfgrass management community. Our mission is to provide an electronic venue for:

  • Superintendents to publish results of their turf research projects and to share them with fellow turf managers.
  • Turf researchers to rapidly publish and disseminate their experimental results.
  • Superintendents who want assistance in designing, carrying out, interpreting and/or summarizing turf research experiments.

Please see our submission guidelines if you wish to have your report published in Super Journal, and our research guide for information on designing and implementing your own turf research project.

MLSN and GP at the 2017 GIS

Jason Haines (@PenderSuper on Twitter) and Larry Stowell (@paceturf on Twitter) taught a half-day course on Minimum Levels for Sustainable Nutrition (MLSN) guidelines and Growth Potential (GP) to more than 100 golf course superintendents from around the world. The slide presentation and handout materials used for the course have been provided at the links below:

Global Soil Survey 2015 Report

The Global Soil Survey was launched in August, 2013 to enlist turf managers from around the globe to collaborate in the development of new, more sustainable turf nutrient guidelines. After two years, there are several key results to report:

Sign up for the Global Soil Survey!!. Sign up by mail or sign up online, and become part of history!!

More information on the Global Soil Survey for Sustainable Turf:

10 years of monitoring recycled water: what we have learned

Adoption of recycled water is an important tool in water conservation, and there continues to be greater use of this resource with every year that goes by. That said, there are some management challenges posed by the use of recycled water. None are insurmountable, but being prepared and aware will help you to use recycled water as effectively as possible.

Starting in 1999, we had a great opportunity to initiate a long-term study on the effects of recycled water on turf health and management. Thanks to PACE Turf member Jeff Beardsley of Big Canyon Country Club, we were able to study changes in soil chemistry in 14 fairways that were irrigated with recycled water, and 4 fairways that were irrigated with domestic water. The results of this study were covered in a poster presentation that we made at Crop Science Society of America meetings. You can view and print the poster here, though it is a fairly large (528 KB) pdf document. Some of the key points from the study include:

  • Significant increases in soil salinity, nitrogen and organic matter were the most important trends observed in areas irrigated with recycled water.
  • To reverse these trends, these management practices were instituted:
    1. Periodic leaching to limit soil salts to less than 6 dS/m
    2. Switch to higher quality domestic water during the summer months to mitigate build-up of salts and nitrogen
    3. Aerification and sand topdressing to dilute organic matter and to allow increased leaching without loss of soil integrity
    4. Re-surfacing of fairways to remove excess organic matter
    5. Decreased rates of nitrogen fertilizer to accommodate the high levels of N delivered in irrigation water
  • Although the focus is frequently on the quality of the recycled water, it turns out that soil chemistry, soil physical characteristics and rainfall patterns were equally important in the successful use of recycled water on golf courses.
  • A contract with the water provider should define water quality limits and delivery guarantees, and should cover the cost of management programs (cultivation, amendments, monitoring programs) adopted to prevent soil and plant damage from long-term use of recycled water.

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