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Home > Main Index > Markets > Horticultural Applications > Outdoor Gardening & Landscaping > Results of the Laboratory and Field-Testing

Golf Green Construction Using Perlite as an Amendment

The results of the laboratory and field-testing are presented in this Table, which includes the green number and its approximate age. A comparison of these data with the USGA specifications (Table 1) provides a good explanation of why the greens have performed so well.

Physical Measurements of the Sand and Perlite Greens
at Several Golf Courses in Los Angeles
  Field Data Laboratory Data
  Porosity
Golf
Course
Green
Number
Green Age
in Years
Bulk
Density
(gm/cm3
Water
Retention
(% by weight)
Infiltration
(inches/hour)
Bulk
Density
(gm/cm3
Water
Retention
(% by weight)
Infiltration
(inches/hour)
Total
(% by wieght)
Capillary
Griffith 2 1 or less 1.29 18.5 -- 1.13 17.1 91.6 57.4 19.4
Griffith 15 1 or less 1.17 17.6 -- 1.18 16.8 98.5 55.5 19.8
Encino 2 2 1.45 17.3 15.5 1.42 18.5 10.5 49.4 26.3
Encino 16 2 1.56 13.8 9.5 1.50 14.4 10.9 43.4 21.6
Hensen 10 7 1.48 14.2 25.2 1.43 17.6 11.4 46.0 25.2
Dam 13 7 1.57 13.6 17.4 1.29 26.2 8.4 57.3 33.8
Woodley 2 10+ 1.55 15.9 -- 1.53 11.6 12.3 42.3 17.8

Except for Griffith, all the greens are either within or slightly above the recommended range. The Griffith Greens, the most recently reconstructed, were not yet open for play at the time of the inspection; there the high infiltration rate will decrease with time as the turf becomes established and play begins.

The other greens all exhibit physical properties that are very favorable for turf growth and play. Finally, this analysis indicates that the field and laboratory data correspond quite well and that the sand and perlite greens will continue to maintain a good physical condition with time and heavy traffic.

Information given herein is from sources considered reliable, but no guarantee of accuracy can be made or liability assumed.  Your supplier may be able to provide you with more precise data.  Certain compositions or processes involving perlite may be the subject of patents.
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