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Turfgrass efficiency: the best playing conditio...

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.

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

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

    uncontrollable factors influencing grass growth 3. Managing water in the soil
  4. 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. 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
  6. Greenkeeping is managing the growth rate of the grass to

    create the desired playing surface for golf.
  7. 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.
  8. 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.
  9. 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.