A
stimpmeter test was run periodically to compare the green
speeds that were achieved by several leading brand greens
rollers. These are the results of the research discussed in
the technical info section
of the website.
Table
1. Green Speed Data in feet obtained with a Stimpmeter
on the day the plots were rolled 2 June - 2 July 2002
Treatment
Freq*
02 June
04 June
06 June
08 June
12 June
18 June
02 July
Check
Daily
8.55c
9.00c
9.09c
8.61d
8.84d
9.39c
9.75c
Double Cut
Daily
9.33b
9.61bc
9.62bc
9.39c
9.19cd
10.00b
10.66b
Speed Roller
EOD
9.71ab
10.68a
10.68a
10.23a
10.07a
10.92a
11.67a
Salsco
EOD
9.90a
9.85b
10.12ab
9.75abc
9.67abc
10.52a
10.81b
Tru-Turf
EOD
9.93a
10.11ab
10.70a
9.94ab
10.00ab
10.68a
11.22ab
True-Surface
EOD
9.38b
9.69bc
10.27a
9.52bc
9.48c
10.46ab
10.81b
Smithco
EOD
9.60ab
10.03ab
10.14ab
9.83abc
9.57bc
10.71a
11.69a
Significance
***
**
***
***
**
***
***
* All
plots were mowed seven days per week at a .120 cutting height.
EOD plots were rolled every other day, thus 3 days one week
followed by 4 days the next.
**, *** Significant at 0.01 and 0.001, respectively. Means in
columns followed by the same letter are not significantly different
at the 5% level using the means separation test.
Table
2. Green Speed Data in feet obtained with a Stimpmeter
on the day the plots were rolled 10 July - 15 August 2002
and the season average
Treatment
Freq*
10
July
16
July
30
July
07
Aug
15
Aug
Season
Average
Check
Daily
9.64c
9.79d
8.87d
9.81b
9.86c
9.27e
Double Cut
Daily
10.99b
10.49cd
9.54c
11.18a
10.93b
10.08d
Speed Roller
EOD
11.39ab
11.73a
10.28ab
12.23a
11.42a
10.92a
Salsco
EOD
11.67a
11.15abc
10.37a
11.66a
11.08ab
10.55bc
Tru-Turf
EOD
11.66a
11.19abc
10.32ab
11.20a
11.30a
10.69ab
True-Surface
EOD
10.95b
10.90bc
10.43a
11.93a
11.08ab
10.41c
Smithco
EOD
11.37ab
11.44ab
9.88bc
11.70a
11.27ab
10.60bc
Significance
***
***
***
**
***
***
*
All plots were mowed seven days per week at a .120 cutting
height. EOD plots were rolled every other day, thus 3 days
one week followed by 4 days the next.
**, *** Significant at 0.01 and 0.001, respectively. Means
in columns followed by the same letter are not significantly
different at the 5% level using the means separation test.
Table
3. Green Speed Data in feet obtained with a Stimpmeter
on the day after plots were rolled 5 June - 3 July 2002.
Treatment
Freq*
05 June
07 June
09 June
11 June
19 June
25 June
03 July
Check
Daily
8.76
8.92
8.43
8.89
9.64
8.62
9.32
Double Cut
Daily
8.02
9.03
9.03
9.1
9.82
9.40
10.33
Speed Roller
EOD
9.01
9.49
8.74
8.99
10.33
9.19
9.76
Salsco
EOD
8.96
9.34
8.97
8.91
9.85
8.94
9.79
Tru-Turf
EOD
9.05
9.34
8.75
9.28
9.95
9.01
9.92
True-Surface
EOD
8.71
9.31
8.5
9.06
9.84
8.53
9.50
Smithco
EOD
9.19
9.37
8.97
9.25
10.03
8.93
9.75
Significance
NS
NS
NS
NS
NS
NS
NS
*
All plots were mowed seven days per week at a .120 cutting
height. EOD plots were rolled every other day, thus 3 days
one week followed by 4 days the next.
**, *** Significant at 0.01 and 0.001, respectively. Means
in columns followed by the same letter are not significantly
different at the 5% level using the means separation test.
NS Not statistically significant
Table
4. Green Speed Data in feet obtained with a Stimpmeter
on the day after plots were rolled 9 July - 16 August 2002
and the season average.
Treatment
Freq*
09
July
17
July
31
July
08
Aug
16
Aug
Season
Average
Check
Daily
9.34
9.99c
9.28
10.25c
9.82c
9.72d
Double Cut
Daily
9.81
10.93ab
10.03
11.76a
11.07a
9.94a
Speed Roller
EOD
9.88
10.99a
9.78
11.20ab
10.63ab
9.83ab
Salsco
EOD
9.84
10.84ab
9.71
11.53ab
10.17bc
9.74abc
Tru-Turf
EOD
9.78
10.63ab
9.77
10.98bc
10.14bc
9.72bc
True-Surface
EOD
9.45
10.52b
9.92
10.80bc
10.22bc
9.53c
Smithco
EOD
9.73
10.86ab
9.69
11.29ab
10.59ab
9.80ab
Significance
NS
***
NS
**
**
***
*
All plots were mowed seven days per week at a .120 cutting
height. EOD plots were rolled every other day, thus 3 days
one week followed by 4 days the next.
**, *** Significant at 0.01 and 0.001, respectively. Means
in columns followed by the same letter are not significantly
different at the 5% level using the means separation test.
NS Not statistically significant