Green Height Bentgrass Cultivar Trials - Established 1998
Nick E. Christians and Rodney A. St. John
This was the first full year of data collection from the Green Height Bentgrass Cultivar trial established in the fall of 1998. The area is maintained at a 3/16-inch mowing height. This is a National Turfgrass Evaluation Program (NTEP) trial and is being conducted at several research stations in the U.S. It contains 29 seeded cultivars, including a number of experimentals. The cultivars are maintained with a fertilizer program of 1/4 lb N applied at 14-day intervals with a total of 4 lb of N/1000 ft2/growing season. Fungicides are used as needed in a preventive program. Herbicides and insecticides are applied as needed.
Visual quality ratings were taken from May through October 1999 (Table 1). Visual quality was assessed using a 9 to 1 scale with 9 = best, 6 = lowest acceptable, and 1 = worst quality. Spring greenup (Green) was evaluated in April 1999 using a 9 to 1 scale with 9 = best and 1 = worst greenup. Genetic color (Color), leaf texture (Leaf), and spring density (dense) were evaluated in June 1999. Genetic color was based on a 9 to 1 scale with 9 = dark green and 1 = light green. Leaf texture was estimated using a 9 to 1 scale with 9 = fine and 1 = coarse texture. Spring density values represent the percentage area per plot covered by bentgrass.
Table 1. 1999 visual turf quality data and other physical ratings for cultivars in the 1998 Green Height Bentgrass Trial.
|
Quality |
||||||||||||
|
Cultivar |
Color |
Green |
Leaf |
Dense |
May |
June |
July |
Aug |
Sept |
Oct |
Mean |
|
|
1 |
SYN 96-2 |
7.7 |
6.7 |
7.0 |
7.7 |
5.7 |
5.7 |
7.7 |
7.3 |
7.7 |
7.0 |
6.8 |
|
2 |
Century |
7.0 |
6.3 |
6.0 |
7.0 |
6.0 |
6.0 |
6.7 |
7.0 |
7.7 |
7.0 |
6.7 |
|
3 |
Imperial |
7.3 |
6.0 |
7.0 |
7.0 |
6.0 |
5.7 |
6.7 |
7.0 |
7.7 |
7.0 |
6.7 |
|
4 |
Bar AS 8FUS2 |
8.0 |
6.3 |
7.3 |
7.7 |
6.0 |
5.7 |
6.7 |
6.7 |
7.0 |
7.0 |
6.5 |
|
5 |
ABT-CRB-1 |
7.3 |
6.0 |
7.0 |
6.0 |
5.7 |
6.0 |
6.3 |
6.7 |
7.0 |
7.0 |
6.4 |
|
6 |
Penn A-1 |
7.3 |
6.7 |
7.7 |
6.3 |
5.7 |
5.7 |
6.7 |
6.7 |
7.3 |
6.3 |
6.4 |
|
7 |
Penn A-4 |
7.0 |
6.3 |
7.0 |
6.7 |
6.0 |
5.3 |
7.0 |
6.7 |
6.7 |
7.0 |
6.4 |
|
8 |
Penn G-1 |
7.0 |
6.0 |
7.0 |
7.3 |
5.7 |
6.0 |
6.3 |
6.3 |
7.0 |
7.0 |
6.4 |
|
9 |
Penn A-2 |
7.3 |
5.7 |
6.7 |
6.7 |
5.7 |
6.0 |
6.3 |
6.7 |
6.7 |
6.7 |
6.3 |
|
10 |
Providence |
7.7 |
6.3 |
7.0 |
7.0 |
6.0 |
5.3 |
7.0 |
7.0 |
6.7 |
6.0 |
6.3 |
|
11 |
PST-A2E |
6.7 |
6.3 |
7.0 |
6.3 |
5.3 |
5.0 |
6.0 |
6.7 |
7.3 |
7.7 |
6.3 |
|
12 |
SYN 96-1 |
7.7 |
5.7 |
7.7 |
7.0 |
5.3 |
5.3 |
6.3 |
6.3 |
8.0 |
6.7 |
6.3 |
|
13 |
SYN 96-3 |
7.3 |
6.0 |
7.7 |
6.7 |
5.0 |
5.7 |
6.3 |
6.7 |
7.0 |
7.0 |
6.3 |
|
14 |
Crenshaw |
7.0 |
6.3 |
6.7 |
5.7 |
5.3 |
5.0 |
6.3 |
6.3 |
7.0 |
7.0 |
6.2 |
|
15 |
ISI AP-5 |
7.3 |
6.0 |
7.0 |
6.7 |
5.3 |
5.7 |
6.3 |
6.3 |
6.3 |
7.0 |
6.2 |
|
16 |
L-93 |
7.7 |
6.0 |
7.3 |
7.3 |
6.0 |
5.7 |
6.3 |
6.7 |
6.7 |
6.0 |
6.2 |
|
17 |
SRX 1NJH |
7.3 |
6.7 |
6.0 |
6.3 |
5.3 |
5.7 |
6.7 |
6.3 |
6.7 |
6.3 |
6.2 |
|
18 |
Backspin |
8.0 |
5.7 |
7.3 |
6.7 |
5.7 |
5.3 |
6.7 |
6.7 |
6.3 |
6.0 |
6.1 |
|
19 |
Pick CB 13-94 |
6.7 |
6.7 |
6.0 |
6.7 |
6.0 |
5.3 |
6.7 |
6.0 |
6.3 |
6.0 |
6.1 |
|
20 |
Penn G-6 |
7.0 |
6.0 |
6.3 |
6.7 |
5.7 |
5.3 |
6.3 |
6.0 |
6.3 |
6.3 |
6.0 |
|
21 |
Bar CB 8US3 |
7.3 |
6.0 |
7.3 |
6.3 |
5.3 |
5.7 |
5.7 |
6.0 |
6.0 |
6.7 |
5.9 |
|
22 |
SR 1119 |
7.3 |
6.3 |
7.3 |
6.7 |
5.3 |
5.7 |
6.3 |
6.0 |
5.7 |
6.3 |
5.9 |
|
23 |
Pennlinks |
7.0 |
6.3 |
6.0 |
6.7 |
5.7 |
5.7 |
6.3 |
5.7 |
5.7 |
5.7 |
5.8 |
|
24 |
Penncross |
7.7 |
6.3 |
7.0 |
6.3 |
5.7 |
5.7 |
5.7 |
5.3 |
5.3 |
6.0 |
5.6 |
|
25 |
SRX 1BPAA |
6.3 |
6.3 |
6.3 |
6.0 |
5.3 |
5.3 |
6.0 |
5.7 |
5.7 |
5.3 |
5.6 |
|
26 |
SRX 1120 |
7.0 |
6.0 |
6.7 |
6.0 |
5.3 |
5.0 |
6.0 |
5.7 |
5.7 |
5.3 |
5.5 |
|
27 |
Pick MVB* |
7.3 |
6.0 |
8.7 |
5.7 |
4.3 |
5.0 |
5.0 |
4.3 |
4.3 |
6.3 |
4.9 |
|
28 |
SR 7200* |
7.3 |
6.3 |
8.7 |
5.7 |
4.3 |
4.3 |
5.0 |
4.0 |
4.3 |
7.0 |
4.8 |
|
29 |
Bavaria* |
6.7 |
6.3 |
9.0 |
6.3 |
4.0 |
4.3 |
5.0 |
3.7 |
4.3 |
5.3 |
4.4 |
|
LSD(0.05) |
NS |
NS |
1.2 |
NS |
0.9 |
NS |
1.0 |
1.0 |
1.0 |
1.0 |
0.4 |
|
*Velvet bentgrass
Color (Genetic color): 9 = dark green and 1 = light green. Green (Greenup): 9 = best and 1 = worst greenup. Leaf (Leaf texture): 9 = fine and 1 = coarse. Spring density (dense) represents the percentage area per plot covered by bentgrass.
Visual quality was assessed with a 9 to 1 scale with 9 = best, 6 = lowest acceptable, and 1 = worst quality.
NS = means are not significantly different at the 0.05 level.
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ISU Horticulture:Publications:2000 Turfgrass Report | College of Agriculture |