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Turfgrass efficiency: the best playing conditions with the fewest inputs

C62291821dac0dd5b7ef3b72a30cd137?s=47 Micah Woods
December 12, 2018

Turfgrass efficiency: the best playing conditions with the fewest inputs

I used these slides for a presentation at the Czech Greenkeepers Association conference in Lednice. I introduced the central idea of my book Short Grammar of Greenkeeping, that the idea growth rate for any site is just fast enough to recover from traffic damage, and no more. And I discussed five chapters from the book in that context.

C62291821dac0dd5b7ef3b72a30cd137?s=128

Micah Woods

December 12, 2018
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  1. Turfgrass efficiency: the best playing conditions with the fewest inputs

    Micah Woods 12 December 2018 Chief Scientist Asian Turfgrass Center www.asianturfgrass.com
  2. Golf Course Seminar magazine, Japan

  3. “The BOOK”, photo by Jonathan Smith

  4. None
  5. Today’s “Table of Contents” 1. Defining turfgrass management

  6. Today’s “Table of Contents” 1. Defining turfgrass management 2. Two

    uncontrollable factors influencing grass growth
  7. Today’s “Table of Contents” 1. Defining turfgrass management 2. Two

    uncontrollable factors influencing grass growth 3. Managing water in the soil
  8. Today’s “Table of Contents” 1. Defining turfgrass management 2. Two

    uncontrollable factors influencing grass growth 3. Managing water in the soil 4. Managing soil organic matter
  9. Today’s “Table of Contents” 1. Defining turfgrass management 2. Two

    uncontrollable factors influencing grass growth 3. Managing water in the soil 4. Managing soil organic matter 5. Measuring soil water to estimate soil air
  10. Defining turfgrass management

  11. Old Course at St. Andrews, Scotland

  12. Kashima Stadium, Japan

  13. Royal Bangkok Sports Club, Thailand

  14. Greenkeeping is managing the growth rate of the grass to

    create the desired playing surface for golf.
  15. creeping bentgrass, Japan

  16. bermudagrass and seashore paspalum, Thailand

  17. manilagrass putting green, Thailand

  18. seashore paspalum and bermudagrass, Thailand

  19. Penn A-1 creeping bentgrass, K deficiency

  20. creeping bentgrass, PGA Catalunya

  21. Two uncontrollable factors influencing grass growth

  22. What affects growth? Growth is a function of photosynthetic light,

    plant water status, temperature, and a nutrient index.1 This can be represented as the environmental productivity index (EPI). 1Each of these factors can be represented by an index that takes a value from 0 to 1. Thus, the EPI will also have a value in the range of 0 to 1. The nutrient index is primarily a function of leaf N content.
  23. What affects growth? Growth is a function of photosynthetic light,

    plant water status, temperature, and a nutrient index.1 This can be represented as the environmental productivity index (EPI). (light)(water)(temperature)(nutrient) = EPI 1Each of these factors can be represented by an index that takes a value from 0 to 1. Thus, the EPI will also have a value in the range of 0 to 1. The nutrient index is primarily a function of leaf N content.
  24. Poa annua & kikuyugrass, Gran Canaria, November

  25. storm approaching, Bangkok, September

  26. creeping bentgrass 5 cm soil temperature, Japan, July

  27. Festuca & Poa annua near Reykjavik, May 4

  28. Simplified EPI   XXXX X (light)(water)((((((((( ( hhhhhhhhh h

    (temperature)(nutrient) = EPI
  29. Managing water in the soil

  30. 80 year old rootzone, Sydney

  31. None
  32. Managing soil organic matter

  33. golf course construction, Thailand

  34. seashore paspalum, Hong Kong

  35. First, manage the grass growth to be as slow as

    possible.
  36. Second, add sand topdressing to mix with the organic matter

    as it is produced by the grass.
  37. Third, there is coring or scarification to physically remove organic

    matter from the soil.
  38. Measuring soil water to estimate soil air

  39. Novotek bermudagrass, Thailand

  40. The best playing surface will be produced when the soil

    has just enough water to keep the grass from wilting, and the remaining soil volume will be filled with air.
  41. creeping bentgrass, Kunming, China

  42. For more, please see www.asianturfgrass.com.

  43. ATC newsletter: www.subscribepage.com/atcupdate MLSN newsletter: www.subscribepage.com/mlsn