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Soil Water Management: Timing, Amount, and Syringing

C62291821dac0dd5b7ef3b72a30cd137?s=47 Micah Woods
January 14, 2016

Soil Water Management: Timing, Amount, and Syringing

Fifteen years ago, it was rare to use a soil moisture meter. Today, it seems that almost every turfgrass manager has some idea of the soil moisture content. In this presentation, I show that daily irrigation can use less water than infrequent irrigation, while maintaining a lower soil moisture content than deep and infrequent irrigation. I explain how soil moisture meters can be used to prove that, how they can be used to measure the real evapotranspiration rate, and why syringing turf for the purpose of cooling the surface is a waste of time, water, and energy.

C62291821dac0dd5b7ef3b72a30cd137?s=128

Micah Woods

January 14, 2016
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  1. Soil Water Management: Timing, Amount, and Syringing Micah Woods Chief

    Scientist Asian Turfgrass Center www.asianturfgrass.com 14 January 2016 Northern Green Expo Minneapolis, Minnesota
  2. When I was a superintendent ...

  3. Irrigation: deep and infrequent

  4. ATC research facility, 2008

  5. I learned something from Doug Soldat

  6. ATC research facility, 2009

  7. I was surprised

  8. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  9. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  10. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  11. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  12. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  13. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  14. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  15. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  16. 0 5 10 15 20 25 09-Aug 19-Aug 29-Aug Soil

    VWC %
  17. The chart

  18. 0.0 0.1 0.2 Jan 2015 Apr 2015 Jul 2015 Oct

    2015 Jan 2016 Potential ET (ETo ), inches Minneapolis, 2015
  19. 0 2 4 0 2 4 ETc (mm/day) Loss am

    to pm (VWC) 11 greens in Japan
  20. We ing agents “It is o en stated that some

    we ing agents move water rapidly through the root zone while other products retain considerable moisture near the surface, but the data to substantiate such claims is limited.” Karcher and Richardson, GCM Dec 2014: We ing agents improve root-zone moisture distribution
  21. Syringing for the purpose of cooling turf I wouldn’t do

    it today.