1998 Iowa Turfgrass Research Report
Fairway Height Bentgrass Study - Established 1993
Nick E. Christians and James R. Dickson
This is the fourth year of data from the Fairway Height Bentgrass Cultivar trial established in the fall of 1993. The last season for this trial will be 1998 and it is scheduled for replacement in the fall of that year. Data collection began after the cultivars were fully established in July, 1994. The area is maintained at a 0.5-inch mowing height. This is a National Turfgrass Evaluation (NTEP) trial and is being conducted at several research stations in the U.S. It contains 21 of the newest seeded cultivars and a number of experimentals.
The cultivars are maintained with 4 lb. of N/1000 ft2/growing season. Fungicides are used as needed in a preventative program. Herbicides and insecticides are applied as needed.
Table 1 contains monthly visual quality ratings for the 1997 season. Visual quality is based on a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = poorest quality. Data on genetic color (Gcolor), leaf texture (Ltex), and greenup (Grnup) ratings are also included.
Southshore was the highest rated cultivar in 1997, followed by Cato and Crenshaw. There are no statistically significant differences among the first 13 cultivars.
Table 1. The 1997 quality ratings for the fairway height bentgrass study.
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Cultivar |
Gcolor |
Ltex |
Grnup |
May |
June |
July |
Aug |
Sept |
Oct |
Mean |
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1 |
Southshore |
6.3 |
7.0 |
7.0 |
6.3 |
7.7 |
6.7 |
7.0 |
7.3 |
7.7 |
7.1 |
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2 |
Cato |
7.7 |
6.7 |
7.0 |
6.3 |
6.3 |
6.3 |
7.0 |
7.3 |
8.0 |
6.9 |
|
3 |
Crenshaw |
7.3 |
6.7 |
6.0 |
5.7 |
7.0 |
6.7 |
6.7 |
7.7 |
8.0 |
6.9 |
|
4 |
Lopez |
7.3 |
6.0 |
6.7 |
6.3 |
7.0 |
6.0 |
7.0 |
7.0 |
7.0 |
6.7 |
|
5 |
Bar WS 42102 |
6.7 |
8.0 |
6.3 |
5.3 |
7.0 |
6.3 |
7.0 |
6.7 |
7.0 |
6.6 |
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6 |
Penn G-6 (G-6) |
6.7 |
7.0 |
7.0 |
6.0 |
6.3 |
7.0 |
6.3 |
7.0 |
7.0 |
6.6 |
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7 |
Penneagle |
6.7 |
7.3 |
6.7 |
6.0 |
6.7 |
6.0 |
7.3 |
6.7 |
7.0 |
6.6 |
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8 |
Pro/Cup |
7.3 |
6.3 |
6.7 |
6.3 |
6.7 |
6.0 |
6.3 |
7.0 |
7.0 |
6.6 |
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9 |
Trueline |
6.7 |
6.3 |
7.0 |
6.7 |
7.3 |
6.3 |
6.3 |
6.7 |
6.3 |
6.6 |
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10 |
Providenxe |
7.0 |
6.7 |
7.0 |
6.0 |
6.0 |
6.0 |
6.3 |
6.7 |
7.0 |
6.3 |
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11 |
Seaside II (DF1) |
6.3 |
7.3 |
6.3 |
5.3 |
6.3 |
6.0 |
6.7 |
6.7 |
6.7 |
6.3 |
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12 |
18th Green |
7.3 |
6.7 |
7.3 |
5.7 |
5.7 |
6.3 |
7.0 |
6.7 |
6.0 |
6.2 |
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13 |
Penn G-2 (G-2) |
6.7 |
6.0 |
6.3 |
5.7 |
6.0 |
6.0 |
6.3 |
6.0 |
7.3 |
6.2 |
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14 |
Penncross |
7.0 |
5.7 |
6.7 |
5.7 |
6.3 |
5.7 |
6.0 |
6.0 |
5.7 |
5.9 |
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15 |
Seaside |
6.0 |
5.0 |
6.3 |
5.0 |
5.7 |
5.3 |
5.7 |
6.3 |
5.7 |
5.6 |
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16 |
ISI-AT-90162* |
5.7 |
6.0 |
7.0 |
4.7 |
5.7 |
5.7 |
5.3 |
6.0 |
5.0 |
5.4 |
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17 |
Bar AS 492 |
6.7 |
6.3 |
6.0 |
5.3 |
5.3 |
5.0 |
5.7 |
5.7 |
5.0 |
5.3 |
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18 |
Exeter* |
6.7 |
6.0 |
6.0 |
5.0 |
5.3 |
5.0 |
5.3 |
5.7 |
5.7 |
5.3 |
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19 |
Pebble (OM-AT-90163)* |
6.0 |
6.0 |
6.3 |
5.0 |
5.3 |
5.0 |
5.0 |
6.0 |
5.7 |
5.3 |
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20 |
Tendenz* |
6.3 |
5.3 |
6.7 |
5.0 |
5.0 |
4.7 |
5.7 |
5.3 |
5.7 |
5.2 |
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21 |
SR 7100* |
5.7 |
6.7 |
7.3 |
4.7 |
5.3 |
4.7 |
4.7 |
4.7 |
5.3 |
4.9 |
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LSD(0.05) |
1.9 |
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1.2 |
1.6 |
1.0 |
1.9 |
1.8 |
2.0 |
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0.9 |
* Colonial Bentgrass
Gcolor (Genetic color): 9 = dark green and 1 = light green.
Ltex (Leaf texture): 9 = fine and 1 = coarse.
Grnup (Greenup): 9 = best and 1 = poorest greenup.
Quality based on a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = poorest quality.
NS = means are not significantly
different at the 0.05 level.
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ISU Horticulture:Publications:1998 Turfgrass Report | College of Agriculture |