Green Height Bentgrass Cultivar Trials
N. E. Christians and R. A. St. John
This is the fourth 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. Most are creeping bentgrass and two, Pick MVB and Bavaria are velvet bentgrasses.
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 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 2001 using a 9 to 1 scale with 9 = best and 1 = worst greenup. Genetic color (Genc) and leaf texture (Leaf) were evaluated in June 1999. Genetic color was based on a 9 to 1 scale with 9 = dark green and 1 = light green. Spring density values represent the percentage area per plot covered by bentgrass.
Table 1. The 2001 visual turf quality and other physical ratings for cultivars in the 1998 Green Height Bentgrass Trial.
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|
QUALITY |
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|
NAME |
GENC |
GREEN |
LEAF |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
MEAN |
|
SYN 96-1 |
7.3 |
6.7 |
8.0 |
7.7 |
7.7 |
8.7 |
7.7 |
7.0 |
7.3 |
7.7 |
|
CRENSHAW |
7.3 |
6.0 |
6.7 |
7.0 |
7.7 |
7.7 |
7.7 |
7.7 |
7.0 |
7.4 |
|
SYN 96-2 |
7.3 |
6.7 |
7.7 |
8.0 |
8.0 |
7.7 |
6.3 |
6.7 |
8.0 |
7.4 |
|
L-93 |
6.7 |
6.3 |
7.7 |
7.7 |
7.0 |
6.3 |
7.7 |
7.3 |
7.7 |
7.3 |
|
IMPERIAL |
7.0 |
5.3 |
7.3 |
6.7 |
7.7 |
7.3 |
7.3 |
6.7 |
7.3 |
7.2 |
|
SYN 96-3 |
7.3 |
6.3 |
8.0 |
7.0 |
8.0 |
8.0 |
7.7 |
5.7 |
6.7 |
7.2 |
|
BENGAL (BAR AS 8FUS2) |
6.7 |
5.7 |
6.7 |
7.3 |
6.0 |
7.7 |
7.7 |
6.3 |
7.3 |
7.1 |
|
PENN A-4 |
6.7 |
5.7 |
7.7 |
6.7 |
6.7 |
7.0 |
7.3 |
7.0 |
7.7 |
7.1 |
|
PENN G-1 |
7.0 |
5.7 |
7.0 |
6.7 |
6.7 |
7.0 |
7.3 |
7.0 |
6.7 |
6.9 |
|
PST-A2E |
6.7 |
5.3 |
7.0 |
7.7 |
6.7 |
7.3 |
7.0 |
6.3 |
6.7 |
6.9 |
|
CENTURY |
7.0 |
6.0 |
8.0 |
7.0 |
7.0 |
7.0 |
6.3 |
6.0 |
7.3 |
6.8 |
|
ABT-CRB-1 |
7.0 |
6.0 |
7.0 |
7.3 |
7.3 |
6.3 |
6.7 |
6.0 |
6.3 |
6.7 |
|
PENN A-2 |
6.7 |
6.0 |
7.0 |
5.7 |
6.3 |
7.0 |
6.7 |
7.0 |
7.0 |
6.6 |
|
BAR CB 8US3 |
6.3 |
5.3 |
6.3 |
6.3 |
6.3 |
6.3 |
7.0 |
6.3 |
6.7 |
6.5 |
|
PENN A-1 |
6.3 |
5.3 |
7.3 |
6.0 |
5.7 |
7.0 |
7.0 |
6.7 |
6.0 |
6.4 |
|
SRX 1NJH |
6.7 |
5.3 |
6.3 |
6.0 |
6.0 |
6.3 |
6.3 |
6.7 |
7.0 |
6.4 |
|
ISI AP-5 |
6.3 |
5.7 |
6.3 |
6.7 |
6.7 |
6.3 |
6.0 |
5.7 |
6.7 |
6.3 |
|
PICK CB 13-94 |
6.0 |
5.7 |
5.7 |
6.7 |
5.7 |
6.0 |
6.7 |
6.7 |
6.3 |
6.3 |
|
BACKSPIN |
6.3 |
4.7 |
7.0 |
5.7 |
6.0 |
6.7 |
7.0 |
6.3 |
5.7 |
6.2 |
|
PENN G-6 |
7.0 |
6.3 |
6.3 |
6.0 |
6.7 |
5.3 |
6.0 |
6.3 |
6.7 |
6.2 |
|
SR 1119 |
6.7 |
5.3 |
6.0 |
5.7 |
5.7 |
6.3 |
7.3 |
5.7 |
6.3 |
6.2 |
|
SRX 1BPAA |
6.7 |
4.7 |
5.7 |
5.7 |
6.0 |
6.3 |
6.7 |
6.0 |
5.7 |
6.1 |
|
PROVIDENCE |
6.3 |
5.7 |
6.0 |
5.3 |
6.3 |
5.7 |
5.7 |
6.3 |
6.7 |
6.0 |
|
BRIGHTON (SRX 1120) |
6.7 |
5.7 |
6.0 |
6.0 |
6.0 |
5.3 |
6.0 |
6.3 |
6.0 |
5.9 |
|
PENNLINKS |
6.0 |
4.0 |
5.0 |
5.0 |
4.7 |
5.3 |
5.0 |
5.0 |
5.0 |
5.0 |
|
PENNCROSS |
5.7 |
4.3 |
5.7 |
5.0 |
4.0 |
5.3 |
5.0 |
4.7 |
5.0 |
4.8 |
|
VESPER (PICK MVB) * |
6.7 |
5.0 |
7.7 |
5.0 |
4.7 |
4.3 |
4.0 |
4.7 |
5.0 |
4.6 |
|
BAVARIA * |
5.7 |
4.3 |
5.3 |
4.0 |
4.3 |
4.7 |
4.3 |
5.0 |
4.7 |
4.5 |
|
SR 7200 |
6.3 |
4.3 |
7.3 |
4.3 |
4.3 |
4.0 |
4.3 |
4.7 |
5.3 |
4.5 |
|
LSD (0.05) |
1.6 |
1.2 |
0.8 |
0.9 |
1.1 |
1.1 |
1.5 |
1.2 |
1.3 |
0.7 |
*
Velvet bentgrass |
ISU Horticulture:Publications:2002 Turfgrass Report | College of Agriculture |
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