Green Height Bentgrass Cultivar Trials - Established 1998
Nick E. Christians and Rodney A. St. John
This is the third year of data 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 lbs 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, 2000 (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 2000 using a 9 to 1 scale with 9 = best and 1 = worst greenup. Genetic color (Color) and spring density (Dens) were evaluated in June 2000. Genetic color was based on a 9 to 1 scale with 9 = dark green and 1 = light green. Density values are a visual rating of the density of the various cultivars collected in June with 9 = greatest density and 1 = lowest density.
Table 1. Visual turf quality and other physical ratings for cultivars in the 1998 Green Height Bentgrass Trial.
|
Quality |
|||||||||||
|
Cultivar |
Color |
Green |
Dens |
May |
June |
July |
Aug |
Sept |
Oct |
Mean |
|
|
1 |
SYN 96-2 |
7.3 |
8.0 |
8.3 |
7.3 |
8.3 |
8.0 |
8.3 |
6.7 |
7.0 |
7.6 |
|
2 |
SYN 96-3 |
7.3 |
7.7 |
7.7 |
6.7 |
7.7 |
7.7 |
8.3 |
7.3 |
6.7 |
7.4 |
|
3 |
Century |
6.7 |
6.7 |
7.3 |
6.3 |
7.3 |
7.7 |
7.3 |
7.0 |
6.3 |
7.0 |
|
4 |
Crenshaw |
6.7 |
7.0 |
7.3 |
6.0 |
6.3 |
7.3 |
7.0 |
8.0 |
7.3 |
7.0 |
|
5 |
BAR AS 8FUS2 |
6.7 |
7.3 |
7.3 |
6.3 |
7.3 |
6.7 |
7.3 |
7.0 |
6.7 |
6.9 |
|
6 |
PENN A-4 |
6.3 |
6.3 |
7.0 |
6.3 |
6.7 |
7.0 |
6.7 |
7.7 |
7.0 |
6.9 |
|
7 |
SYN 96-1 |
7.0 |
7.3 |
8.0 |
6.3 |
7.3 |
6.7 |
7.7 |
7.0 |
6.7 |
6.9 |
|
8 |
ABT-CRB-1 |
7.3 |
7.0 |
7.3 |
5.7 |
7.3 |
7.3 |
6.3 |
7.7 |
6.7 |
6.8 |
|
9 |
Imperial |
6.7 |
6.3 |
6.7 |
6.3 |
6.7 |
6.7 |
6.7 |
7.0 |
6.7 |
6.7 |
|
10 |
PENN A-2 |
5.7 |
7.0 |
6.7 |
6.0 |
6.3 |
7.0 |
6.7 |
7.7 |
6.7 |
6.7 |
|
11 |
PENN A-1 |
7.0 |
7.3 |
7.0 |
5.7 |
7.7 |
6.3 |
7.0 |
7.0 |
6.0 |
6.6 |
|
12 |
PST-A2E |
6.3 |
7.0 |
7.3 |
6.0 |
6.7 |
6.3 |
6.3 |
7.0 |
6.7 |
6.5 |
|
13 |
Backspin |
5.7 |
6.7 |
6.7 |
5.7 |
6.7 |
6.3 |
7.0 |
6.7 |
6.0 |
6.4 |
|
14 |
ISI AP-5 |
6.0 |
6.7 |
6.3 |
6.3 |
6.0 |
6.0 |
6.7 |
6.3 |
7.0 |
6.4 |
|
15 |
L-93 |
5.7 |
6.0 |
6.0 |
6.3 |
6.0 |
6.0 |
6.7 |
6.7 |
6.7 |
6.4 |
|
16 |
BAR CB 8US3 |
6.0 |
6.3 |
6.0 |
6.0 |
6.0 |
6.0 |
6.0 |
6.7 |
7.0 |
6.3 |
|
17 |
PENN G-6 |
5.7 |
6.7 |
6.0 |
6.3 |
6.0 |
6.3 |
6.3 |
6.7 |
6.3 |
6.3 |
|
18 |
Providence |
5.7 |
6.3 |
5.0 |
6.7 |
5.7 |
5.7 |
6.3 |
6.0 |
7.3 |
6.3 |
|
19 |
PENN G-1 |
6.3 |
6.0 |
6.3 |
6.0 |
7.0 |
6.3 |
5.7 |
6.3 |
6.0 |
6.2 |
|
20 |
SRX 1NJH |
5.3 |
6.0 |
6.3 |
5.7 |
5.7 |
5.3 |
6.7 |
6.0 |
6.0 |
5.9 |
|
21 |
SR 1119 |
5.7 |
6.0 |
5.7 |
6.0 |
5.0 |
5.7 |
6.7 |
5.7 |
5.7 |
5.8 |
|
22 |
PICK CB 13-94 |
6.0 |
6.3 |
6.0 |
6.0 |
5.3 |
5.7 |
6.3 |
4.7 |
6.0 |
5.7 |
|
23 |
SRX 1120 |
5.7 |
5.7 |
5.7 |
5.7 |
6.0 |
5.3 |
5.3 |
6.0 |
5.3 |
5.6 |
|
24 |
Pennlinks |
5.0 |
5.7 |
5.0 |
5.3 |
4.7 |
5.0 |
5.7 |
5.3 |
6.0 |
5.3 |
|
25 |
SRX 1BPAA |
5.7 |
6.0 |
5.3 |
5.0 |
5.0 |
5.7 |
5.7 |
5.0 |
5.7 |
5.3 |
|
26 |
Penncross |
4.7 |
5.7 |
5.0 |
5.3 |
5.0 |
5.0 |
5.3 |
5.0 |
5.0 |
5.1 |
|
27 |
Pick MVB* |
6.3 |
5.0 |
7.0 |
4.0 |
4.7 |
5.0 |
4.0 |
4.7 |
4.7 |
4.5 |
|
28 |
SR 7200 |
5.0 |
5.0 |
6.7 |
4.0 |
4.7 |
4.3 |
4.7 |
4.7 |
4.3 |
4.4 |
|
29 |
Bavaria* |
4.3 |
5.0 |
5.0 |
5.3 |
3.7 |
4.0 |
4.0 |
4.0 |
4.3 |
4.2 |
|
LSD(0.05) |
0.9 |
0.9 |
1.1 |
1.4 |
1.0 |
1.2 |
1.5 |
1.4 |
1.3 |
0.7 |
|
*Velvet bentgrass
Color (Genetic color): 9 = dark green and 1 = light green. Green (Greenup): 9 = best and 1 = worst greenup. Density (dens) values are a visual rating of the density of the various cultivars collected in June with 9 = greatest density and 1 = lowest density.
Visual quality was assessed with a 9 to 1 scale with 9 = best, 6 = lowest acceptable, and 1 = worst quality.