Results of Regional Kentucky Bluegrass Cultivar Trials
Rodney A. St. John, Nick E. Christians, and David D. Minner
The United States Department of Agriculture (USDA) has sponsored several regional Kentucky bluegrass cultivar trials conducted at most of the northern agricultural experiment stations. Three trials were underway at Iowa State University during the 1999 season. The first, a high-maintenance study, was established in 1995, receives 4 lb N/1000 ft2/yr, and is irrigated as needed. The second trial established in 1995, receives 4 lb N/1000 ft2/yr, is irrigated as needed, and receives 'traffic'. Both studies are mowed at two inches. The third trial established in the fall of 1995, is a low-maintenance study that receives 1 lb of N/1000 ft2/yr in September and is non-irrigated. The objective of the high-maintenance, irrigated study is to investigate cultivar performance under a cultural regime similar to that used on irrigated home lawns in Iowa. The objective of the second study is to observe cultivar response under conditions similar to those found in irrigated lawns and sports fields that receive substantial traffic wear. The objective of the third study is to evaluate cultivars under conditions similar to those maintained in either a park or school ground.
The values listed under each month in Tables 1 and 2 are the averages of visual quality ratings made on three replicated plots for the three studies. Visual quality was based on a scale of 9 to 1: 9 = best quality, 6 = lowest acceptable quality, and 1 = worst quality. Yearly means of monthly data were taken and are listed in the last column. The first cultivar received the highest average rating for the entire 1999 season. The cultivars are listed in descending order of average quality.
Data for genetic color (Gcol), spring greenup (Grn), and leaf texture (Leaf) also are included for the high-maintenance and for the low-maintenance trials. Genetic color was rated using a 9 to 1 scale with 9 = dark and 1 = light green. Spring greenup was estimated using a 9 to 1 scale with 9 = green and 1 = dormant turf. Leaf texture was assessed with a 9 to 1 scale with 9 = fine and 1 = coarse texture.
Data for the high-maintenance, irrigated traffic study are included in Table 3. The cultivars are listed in descending order according to wear tolerance ratings for the 1999 season. Tolerance was assessed using a 9 to 1 scale with 9 = best and 1 = worst tolerance. The first cultivar listed was the most wear tolerant cultivar. The percentage of fall ground cover (Fcov) data also are included in Table 3.
In the summer of 1999, several cultivars developed symptoms of Summer Patch (Magnaporthe poae). The most severely damaged were Limousine, Platini, HV 242, ZPS-309. Also affected were BAR VB 5649, Blacksburg, Baruzo, Caliber, BAR VB 233, BAR VB 6820. Ba 81-270 and PST638 also developed symptoms in 1 of the 3 replications. This accounts for the low ratings for these varieties during July, August, and September and their overall low ratings for the year.
Table 1. 1999 visual quality1 and other ratings2 for the High-maintenance Kentucky Bluegrass Trial.
|
Turf quality |
||||||||||
|
Cultivar |
Gcol |
Grn |
Leaf |
May |
June |
July |
Aug |
Sept |
Mean |
|
|
1 |
Liberator (ZPS-2572) |
9.0 |
6.7 |
8.0 |
9.0 |
9.0 |
8.0 |
8.0 |
8.0 |
8.4 |
|
2 |
Total Eclipse (TCR-1738) |
8.7 |
6.7 |
8.0 |
8.7 |
8.7 |
8.0 |
8.0 |
8.0 |
8.3 |
|
3 |
Award |
9.0 |
7.7 |
7.0 |
8.7 |
8.7 |
7.7 |
7.7 |
8.0 |
8.1 |
|
4 |
Midnight |
8.7 |
6.3 |
8.0 |
8.3 |
8.7 |
8.0 |
7.7 |
8.0 |
8.1 |
|
5 |
Moonlight (PST-A418) |
8.3 |
6.0 |
8.0 |
8.3 |
9.0 |
7.7 |
7.7 |
7.7 |
8.1 |
|
6 |
Nuglade |
8.3 |
6.7 |
8.0 |
9.0 |
8.7 |
7.3 |
7.7 |
8.0 |
8.1 |
|
7 |
Arcadia (J-1936) |
8.3 |
6.3 |
8.0 |
8.7 |
8.7 |
7.3 |
7.0 |
7.7 |
7.9 |
|
8 |
Odyssey (J-1561) |
8.0 |
5.7 |
8.3 |
9.0 |
9.0 |
7.0 |
7.0 |
7.7 |
7.9 |
|
9 |
PST-P46 |
8.0 |
6.3 |
8.0 |
9.0 |
9.0 |
7.0 |
7.0 |
7.3 |
7.9 |
|
10 |
Absolute (MED-1497) |
8.7 |
7.0 |
8.0 |
9.0 |
9.0 |
7.7 |
6.7 |
6.7 |
7.8 |
|
11 |
ASP200 (HV 130) |
7.0 |
5.7 |
8.0 |
9.0 |
8.7 |
7.3 |
7.0 |
7.0 |
7.8 |
|
12 |
Impact (J-1576) |
9.0 |
7.0 |
8.0 |
8.7 |
8.3 |
7.0 |
7.0 |
8.0 |
7.8 |
|
13 |
NJ 1190 |
6.7 |
8.0 |
8.3 |
8.7 |
8.7 |
7.7 |
7.0 |
6.7 |
7.7 |
|
14 |
Quantum Leap (J-1567) |
8.3 |
7.0 |
8.0 |
8.3 |
8.3 |
7.0 |
7.0 |
7.7 |
7.7 |
|
15 |
SR 2000 |
8.3 |
7.0 |
7.3 |
7.7 |
8.0 |
7.7 |
7.7 |
7.7 |
7.7 |
|
16 |
Wildwood |
8.0 |
5.7 |
8.7 |
8.7 |
8.3 |
6.7 |
7.0 |
7.7 |
7.7 |
|
17 |
ZPS-2183 |
7.3 |
8.0 |
7.3 |
9.0 |
9.0 |
7.3 |
6.7 |
6.3 |
7.7 |
|
18 |
Rugby II (MED-18) |
8.3 |
6.0 |
8.0 |
8.7 |
8.0 |
7.0 |
6.7 |
7.7 |
7.6 |
|
19 |
Ascot |
7.7 |
6.3 |
8.0 |
8.3 |
9.0 |
6.3 |
6.3 |
7.3 |
7.5 |
|
20 |
BA 73-3738.3 |
8.3 |
6.3 |
8.0 |
8.3 |
8.3 |
7.0 |
7.0 |
7.0 |
7.5 |
|
21 |
BA 75-163 |
8.3 |
6.0 |
8.0 |
8.0 |
8.0 |
7.0 |
7.0 |
7.7 |
7.5 |
|
22 |
Fortuna |
8.3 |
6.0 |
8.0 |
7.7 |
7.7 |
7.3 |
7.3 |
7.3 |
7.5 |
|
23 |
Glade |
7.7 |
6.7 |
8.0 |
8.7 |
7.7 |
6.7 |
7.0 |
7.3 |
7.5 |
|
24 |
H86-690 |
8.0 |
7.3 |
8.0 |
8.0 |
7.7 |
7.3 |
7.3 |
7.0 |
7.5 |
|
25 |
Lipoa |
7.3 |
6.0 |
8.0 |
8.3 |
8.0 |
7.0 |
7.0 |
7.0 |
7.5 |
|
26 |
Pick 8 |
7.7 |
7.0 |
8.0 |
8.0 |
8.3 |
7.3 |
7.0 |
7.0 |
7.5 |
|
27 |
Serene (PST-A7-245A) |
7.0 |
6.3 |
7.7 |
8.7 |
8.3 |
6.7 |
6.7 |
7.0 |
7.5 |
|
28 |
VB 16015 |
8.0 |
6.7 |
8.0 |
7.7 |
8.7 |
7.0 |
7.0 |
7.0 |
7.5 |
|
29 |
Goldrush (BA 87-102) |
7.0 |
6.3 |
8.0 |
7.7 |
8.0 |
7.3 |
7.0 |
7.0 |
7.4 |
|
30 |
North Star (PST-A7-60) |
7.7 |
5.3 |
8.0 |
9.0 |
8.0 |
6.3 |
6.3 |
7.3 |
7.4 |
|
33 |
Pick-855 |
7.3 |
6.7 |
8.3 |
8.0 |
8.0 |
7.0 |
7.0 |
7.0 |
7.4 |
|
32 |
Princeton 105 |
7.3 |
7.0 |
8.0 |
8.0 |
8.0 |
7.0 |
7.0 |
7.0 |
7.4 |
|
33 |
Shamrock |
7.3 |
8.0 |
8.3 |
8.0 |
8.0 |
7.0 |
7.0 |
7.0 |
7.4 |
|
34 |
Sodnet |
8.0 |
7.3 |
8.3 |
8.3 |
8.0 |
7.0 |
6.7 |
7.0 |
7.4 |
|
35 |
A88-744 |
8.0 |
7.7 |
8.0 |
7.7 |
8.0 |
6.7 |
7.0 |
7.3 |
7.3 |
|
36 |
Abbey |
8.0 |
7.0 |
8.0 |
7.3 |
7.7 |
7.7 |
7.0 |
6.7 |
7.3 |
|
37 |
BA 70-060 |
8.3 |
6.0 |
8.0 |
7.7 |
8.0 |
7.0 |
7.0 |
7.0 |
7.3 |
|
38 |
BA 77-702 |
7.3 |
6.0 |
8.0 |
7.7 |
7.7 |
7.3 |
6.7 |
7.0 |
7.3 |
|
39 |
Brilliant (PST-B2-42) |
7.3 |
7.3 |
8.0 |
7.7 |
8.3 |
6.7 |
6.7 |
7.0 |
7.3 |
|
40 |
Cardiff |
7.0 |
7.0 |
8.0 |
8.3 |
8.0 |
7.0 |
6.7 |
6.7 |
7.3 |
|
41 |
Challenger |
8.0 |
7.7 |
8.3 |
8.3 |
7.7 |
6.7 |
6.7 |
7.3 |
7.3 |
|
42 |
Champagne (LTP-621) |
8.0 |
7.0 |
8.0 |
7.7 |
8.0 |
7.0 |
7.0 |
7.0 |
7.3 |
|
43 |
Chateau |
7.0 |
6.7 |
8.0 |
8.0 |
8.7 |
6.3 |
6.3 |
7.0 |
7.3 |
|
44 |
Dragon (ZPS-429) |
8.0 |
6.3 |
7.7 |
7.7 |
7.7 |
7.0 |
7.0 |
7.0 |
7.3 |
|
45 |
Explorer (Pick-3561) |
7.7 |
6.3 |
8.0 |
8.3 |
8.0 |
6.7 |
6.7 |
7.0 |
7.3 |
|
46 |
Misty (BA76-372) |
7.7 |
6.3 |
8.0 |
8.0 |
8.0 |
6.7 |
6.7 |
7.0 |
7.3 |
|
47 |
Nustar |
7.3 |
6.3 |
8.0 |
8.3 |
7.0 |
7.0 |
7.0 |
7.0 |
7.3 |
|
48 |
Seabring (BA 79-260) |
7.7 |
6.7 |
8.0 |
8.0 |
8.3 |
7.0 |
6.3 |
6.7 |
7.3 |
|
49 |
Showcase (PST-BO-131) |
7.7 |
6.3 |
8.0 |
7.0 |
8.0 |
7.0 |
7.0 |
7.7 |
7.3 |
|
50 |
SR 2100 |
7.7 |
6.7 |
7.7 |
7.3 |
7.3 |
7.3 |
7.0 |
7.3 |
7.3 |
|
51 |
BA 81-058 |
7.0 |
7.0 |
8.0 |
7.7 |
7.7 |
6.7 |
6.7 |
7.3 |
7.2 |
|
52 |
Jewel (BA 81-227) |
7.3 |
6.3 |
7.7 |
8.3 |
8.0 |
6.3 |
6.3 |
7.0 |
7.2 |
|
53 |
LTP-620 |
7.3 |
6.7 |
8.0 |
7.7 |
7.3 |
7.0 |
7.0 |
7.0 |
7.2 |
|
54 |
SRX 2205 |
8.0 |
6.0 |
8.3 |
8.7 |
8.0 |
6.7 |
6.3 |
6.3 |
7.2 |
|
55 |
America |
7.3 |
6.0 |
8.0 |
7.0 |
7.0 |
7.0 |
7.0 |
7.3 |
7.1 |
|
56 |
Chicago (J-2582) |
6.7 |
6.0 |
8.0 |
7.7 |
7.7 |
6.7 |
6.7 |
7.0 |
7.1 |
|
57 |
Envicta (BA 75-173) |
8.0 |
6.0 |
8.0 |
7.3 |
7.7 |
7.0 |
6.7 |
6.7 |
7.1 |
|
58 |
J-1555 |
7.7 |
6.7 |
8.0 |
8.0 |
7.7 |
6.3 |
6.3 |
7.0 |
7.1 |
|
59 |
NJ-GD |
7.0 |
7.3 |
8.0 |
7.7 |
7.0 |
7.0 |
7.0 |
7.0 |
7.1 |
|
60 |
PST-BO-165 |
8.0 |
7.0 |
8.0 |
7.3 |
7.7 |
6.7 |
6.7 |
7.3 |
7.1 |
|
61 |
Raven |
7.7 |
6.7 |
8.0 |
7.7 |
7.3 |
7.0 |
6.7 |
6.7 |
7.1 |
|
62 |
Sidekick |
7.3 |
6.3 |
8.0 |
7.3 |
7.0 |
7.3 |
7.0 |
6.7 |
7.1 |
|
63 |
SR 2109 |
7.0 |
6.3 |
7.7 |
8.7 |
7.3 |
6.7 |
6.3 |
6.7 |
7.1 |
|
64 |
BA 81-113 |
7.7 |
6.7 |
8.0 |
7.3 |
7.0 |
7.3 |
6.7 |
6.7 |
7.0 |
|
65 |
BA 81-220 |
8.0 |
6.3 |
8.0 |
7.7 |
6.7 |
7.0 |
6.7 |
7.0 |
7.0 |
|
66 |
Coventry |
7.0 |
7.3 |
7.7 |
8.3 |
8.0 |
6.0 |
6.0 |
6.7 |
7.0 |
|
67 |
LKB-95 |
7.0 |
6.7 |
8.3 |
8.0 |
7.7 |
6.7 |
6.3 |
6.3 |
7.0 |
|
68 |
BA 85-490 |
7.0 |
7.7 |
8.0 |
7.7 |
7.3 |
6.3 |
6.3 |
7.0 |
6.9 |
|
69 |
Blacksburg |
7.7 |
6.0 |
8.3 |
8.3 |
8.0 |
6.7 |
5.7 |
5.7 |
6.9 |
|
70 |
Compact |
6.7 |
5.7 |
7.3 |
7.7 |
6.7 |
6.7 |
6.7 |
6.7 |
6.9 |
|
71 |
Eclipse |
7.3 |
6.7 |
8.0 |
7.7 |
7.3 |
6.3 |
6.3 |
7.0 |
6.9 |
|
72 |
Haga |
7.0 |
7.3 |
8.0 |
7.7 |
6.7 |
6.7 |
6.7 |
6.7 |
6.9 |
|
73 |
Jefferson |
7.0 |
6.3 |
8.0 |
7.3 |
7.0 |
6.7 |
6.7 |
7.0 |
6.9 |
|
74 |
MED-1580 |
7.3 |
6.3 |
8.0 |
8.3 |
8.0 |
6.7 |
5.7 |
5.7 |
6.9 |
|
75 |
NJ-54 |
7.3 |
6.3 |
8.0 |
7.7 |
7.7 |
6.3 |
6.3 |
6.7 |
6.9 |
|
76 |
Rambo (J-2579) |
7.3 |
6.0 |
8.0 |
7.7 |
7.7 |
6.7 |
6.3 |
6.3 |
6.9 |
|
77 |
BA 76-197 |
7.3 |
6.0 |
8.0 |
7.3 |
7.3 |
6.7 |
6.3 |
6.3 |
6.8 |
|
78 |
Baron |
7.7 |
6.7 |
8.0 |
8.0 |
7.0 |
6.3 |
6.3 |
6.3 |
6.8 |
|
79 |
Bartitia |
7.7 |
6.3 |
8.3 |
8.7 |
7.0 |
6.3 |
6.0 |
6.0 |
6.8 |
|
80 |
Bluechip (MED-1991) |
7.3 |
6.7 |
8.0 |
7.3 |
6.7 |
6.7 |
6.7 |
6.7 |
6.8 |
|
81 |
Conni |
7.0 |
5.3 |
8.3 |
8.0 |
7.0 |
6.7 |
6.0 |
6.3 |
6.8 |
|
82 |
Nimbus |
7.0 |
6.3 |
7.7 |
8.3 |
7.3 |
6.3 |
6.0 |
6.0 |
6.8 |
|
83 |
Unique |
7.3 |
7.7 |
8.0 |
7.3 |
6.3 |
6.7 |
6.7 |
7.0 |
6.8 |
|
84 |
Apollo (PST-B3-180) |
8.0 |
6.7 |
8.0 |
6.7 |
6.7 |
7.0 |
6.7 |
6.7 |
6.7 |
|
85 |
Baruzo |
7.3 |
6.7 |
8.3 |
7.7 |
7.3 |
5.7 |
5.7 |
7.0 |
6.7 |
|
86 |
Classic |
6.7 |
7.0 |
8.0 |
6.7 |
7.0 |
6.3 |
6.3 |
7.0 |
6.7 |
|
87 |
Livingston |
6.7 |
7.0 |
8.0 |
7.0 |
6.7 |
6.7 |
6.3 |
6.7 |
6.7 |
|
88 |
Marquis |
7.3 |
6.7 |
8.0 |
7.7 |
6.7 |
6.7 |
6.3 |
6.3 |
6.7 |
|
89 |
Pepaya (DP 37-192) |
7.0 |
6.0 |
8.0 |
7.7 |
7.7 |
6.0 |
5.7 |
6.3 |
6.7 |
|
90 |
BA 81-270 |
7.0 |
6.7 |
7.7 |
8.3 |
8.0 |
5.7 |
5.3 |
5.7 |
6.6 |
|
91 |
BAR VB 3115B |
6.3 |
7.0 |
8.7 |
7.3 |
7.3 |
6.0 |
6.0 |
6.3 |
6.6 |
|
92 |
Baronie |
7.3 |
7.0 |
8.0 |
7.0 |
7.0 |
6.0 |
6.0 |
7.0 |
6.6 |
|
93 |
Allure |
7.3 |
6.7 |
8.0 |
7.7 |
7.0 |
6.0 |
5.7 |
5.7 |
6.4 |
|
94 |
Blackstone (PST-638) |
7.0 |
6.7 |
8.0 |
8.3 |
7.0 |
5.7 |
5.3 |
5.7 |
6.4 |
|
95 |
Kenblue |
5.7 |
8.0 |
9.0 |
7.0 |
6.3 |
6.3 |
6.0 |
6.0 |
6.3 |
|
96 |
Caliber |
6.3 |
8.0 |
8.0 |
7.0 |
6.3 |
5.3 |
5.3 |
5.7 |
5.9 |
|
97 |
BAR VB 5649 |
6.3 |
5.3 |
8.0 |
7.0 |
6.0 |
5.7 |
5.0 |
5.0 |
5.7 |
|
98 |
HV 242 |
6.3 |
5.0 |
8.0 |
7.7 |
5.7 |
5.0 |
4.7 |
5.0 |
5.6 |
|
99 |
ZPS-309 |
5.3 |
5.3 |
8.0 |
7.3 |
6.0 |
4.7 |
4.3 |
5.3 |
5.5 |
|
100 |
BAR VB 233 |
5.3 |
5.3 |
7.7 |
7.7 |
5.7 |
4.0 |
4.0 |
4.7 |
5.2 |
|
101 |
Limousine |
6.0 |
6.7 |
8.0 |
7.7 |
5.7 |
4.7 |
4.0 |
4.0 |
5.2 |
|
102 |
BAR VB 6820 |
5.7 |
5.7 |
8.0 |
7.7 |
5.0 |
4.3 |
3.7 |
3.7 |
4.9 |
|
103 |
Platini |
5.7 |
5.3 |
8.0 |
7.0 |
4.7 |
4.0 |
3.7 |
3.7 |
4.6 |
|
LSD(0.05) |
1.2 |
1.3 |
0.8 |
1.1 |
1.7 |
1.4 |
1.4 |
1.4 |
1.0 |
|
1Visual quality was assessed using a scale of 9 to 1 with 9 = best quality, 6 = lowest acceptable quality, and 1 = worst quality.
2Genetic color (Gcol) was rated using a 9 to 1 scale with 9 = dark and 1 = light green. Spring greenup (Grn) was determined using a 9 to 1 scale with 9 = green and 1 = dormant. Leaf texture (Leaf) was assessed with a 9 to 1 scale with 9 = fine and 1 = coarse texture.
Table 2. 1999 visual quality1 and other ratings2 for the 1995 Low-maintenance Kentucky Bluegrass Trial.
|
Turf quality |
|||||||||||
|
Cultivar |
Gcol |
Grn |
Leaf |
May |
June |
July |
Aug |
Sept |
Oct |
Mean |
|
|
1 |
Kenblue |
5.7 |
6.7 |
7.0 |
6.0 |
6.0 |
5.3 |
6.0 |
4.7 |
5.3 |
5.6 |
|
2 |
BAR VB 3115B |
7.0 |
6.7 |
6.7 |
6.3 |
6.3 |
6.0 |
5.7 |
3.0 |
5.3 |
5.4 |
|
3 |
Eagleton |
6.3 |
5.7 |
6.3 |
4.7 |
5.0 |
4.7 |
6.0 |
4.3 |
4.7 |
4.9 |
|
4 |
South Dakota |
5.7 |
6.3 |
7.0 |
6.0 |
6.0 |
6.0 |
4.3 |
2.7 |
4.0 |
4.8 |
|
5 |
Caliber |
6.0 |
6.3 |
7.0 |
6.3 |
5.3 |
5.0 |
5.0 |
2.0 |
3.7 |
4.6 |
|
6 |
VB 16015 |
5.7 |
5.3 |
6.3 |
4.3 |
4.7 |
5.0 |
4.3 |
3.3 |
3.7 |
4.2 |
|
7 |
BAR VB 233 |
7.3 |
5.7 |
6.3 |
5.0 |
5.0 |
5.0 |
4.3 |
2.7 |
2.7 |
4.1 |
|
8 |
BH 95-199 |
6.0 |
5.7 |
6.7 |
4.3 |
5.0 |
5.0 |
4.7 |
2.0 |
3.0 |
4.0 |
|
9 |
Canterbury |
6.7 |
5.3 |
6.7 |
5.3 |
5.3 |
4.3 |
3.7 |
2.7 |
2.0 |
3.9 |
|
10 |
Blue Star |
7.0 |
5.7 |
6.7 |
5.0 |
3.7 |
4.0 |
4.0 |
2.7 |
3.3 |
3.8 |
|
11 |
Dragon (ZPS-429) |
7.0 |
5.0 |
6.0 |
4.7 |
4.7 |
4.3 |
4.0 |
2.3 |
2.0 |
3.7 |
|
12 |
Bartitia |
7.7 |
5.0 |
6.0 |
4.0 |
5.3 |
4.3 |
3.7 |
2.0 |
2.0 |
3.6 |
|
13 |
BAR VB 5649 |
6.7 |
5.0 |
5.7 |
4.0 |
4.3 |
3.7 |
3.7 |
2.3 |
2.7 |
3.4 |
|
14 |
Baruzo |
6.7 |
5.0 |
6.3 |
4.0 |
4.0 |
3.7 |
4.0 |
2.7 |
2.3 |
3.4 |
|
15 |
Lipoa |
5.0 |
5.3 |
6.3 |
3.7 |
4.0 |
4.0 |
3.3 |
2.3 |
3.0 |
3.4 |
|
16 |
PST-B9-196 |
6.3 |
5.3 |
6.3 |
3.3 |
3.3 |
3.3 |
3.7 |
4.0 |
2.7 |
3.4 |
|
17 |
MTT 683 |
6.7 |
5.0 |
6.0 |
3.3 |
4.0 |
4.0 |
3.7 |
3.0 |
2.0 |
3.3 |
|
18 |
North Star (PST-A7-60) |
7.3 |
4.7 |
6.3 |
3.0 |
3.7 |
4.3 |
3.3 |
2.3 |
3.0 |
3.3 |
|
19 |
Baronie |
5.7 |
5.0 |
6.3 |
3.7 |
3.7 |
3.7 |
3.0 |
3.0 |
2.0 |
3.2 |
|
20 |
BAR VB 6820 |
6.7 |
5.0 |
6.0 |
2.7 |
3.3 |
4.7 |
3.3 |
2.7 |
2.0 |
3.1 |
|
21 |
Baron |
6.0 |
4.7 |
6.0 |
3.0 |
3.0 |
4.0 |
3.7 |
2.7 |
2.0 |
3.1 |
|
LSD0.05 |
1.3 |
1.4 |
NS |
1.7 |
1.6 |
2.2 |
1.8 |
NS |
2.5 |
1.4 |
|
1Visual quality was assessed using a scale of 9 to 1 with 9 = best quality, 6 = lowest acceptable quality, and 1 = worst quality.
2Genetic color (Gcol) was rated using a 9 to 1 scale with 9 = dark and 1 = light green. Spring greenup (Grn) was determined using a 9 to 1 scale with 9 = green and 1 = dormant. Leaf texture (Leaf) was assessed with a 9 to 1 scale with 9 = fine and 1 = coarse texture.
NS = means are not significantly different at the 0.05 level
Table 3. 1999 wear tolerance1 and summer living ground cover2 for the 1995 High-maintenance Kentucky Bluegrass Traffic Trial.
|
Cultivar |
Summer ground cover (%) |
Wear tolerance |
|
|
1 |
BAR VB 3115B |
90.0 |
8.0 |
|
2 |
Ba 81-270 |
70.0 |
6.7 |
|
3 |
Serene (PST-A7-245A) |
73.3 |
6.7 |
|
4 |
Coventry |
68.3 |
6.3 |
|
5 |
Kenblue |
73.3 |
6.3 |
|
6 |
LKB-95 |
65.0 |
6.0 |
|
7 |
America |
65.0 |
6.0 |
|
8 |
Champagne (LTP-621) |
60.0 |
6.0 |
|
9 |
Rugby II (MED-18) |
61.7 |
6.0 |
|
10 |
Sidekick |
63.3 |
6.0 |
|
11 |
MED-1580 |
68.3 |
5.7 |
|
12 |
Bluechip (MED-1991) |
58.3 |
5.7 |
|
13 |
Classic |
68.3 |
5.7 |
|
14 |
Odyssey (J-1561) |
60.0 |
5.7 |
|
15 |
Eclipse |
53.3 |
5.7 |
|
16 |
NuStar |
66.7 |
5.7 |
|
17 |
NJ 1190 |
63.3 |
5.7 |
|
18 |
Unique |
60.0 |
5.7 |
|
19 |
Chateau |
70.0 |
5.3 |
|
20 |
Haga |
55.0 |
5.3 |
|
21 |
Ba 75-163 |
65.0 |
5.3 |
|
22 |
ASP200 (HV 130) |
56.7 |
5.3 |
|
23 |
NuGlade |
56.7 |
5.3 |
|
24 |
Pick-855 |
71.7 |
5.3 |
|
25 |
Ba 70-060 |
65.0 |
5.3 |
|
26 |
Ba 75-490 |
60.0 |
5.3 |
|
27 |
Seabring (Ba 79-260) |
63.3 |
5.3 |
|
28 |
Ba 81-227 |
63.3 |
5.3 |
|
29 |
PST-P46 |
61.7 |
5.3 |
|
30 |
PST-B2-42 |
61.7 |
5.3 |
|
31 |
Compact |
58.3 |
5.3 |
|
32 |
VB 16015 |
58.3 |
5.3 |
|
33 |
Princeton 105 |
61.7 |
5.0 |
|
34 |
A88-744 |
56.7 |
5.0 |
|
35 |
Wildwood |
61.7 |
5.0 |
|
36 |
Total Eclipse (TCR-1738) |
58.3 |
5.0 |
|
37 |
Rambo (J-2579) |
61.7 |
5.0 |
|
38 |
Chicago (J-2582) |
61.7 |
5.0 |
|
39 |
Quantum Leap (J-1567) |
56.7 |
5.0 |
|
40 |
Liberator (ZPS-2572) |
55.0 |
5.0 |
|
41 |
Ba 75-173 |
61.7 |
5.0 |
|
42 |
Moonlight (PST-A418) |
53.3 |
5.0 |
|
43 |
Glade |
58.3 |
5.0 |
|
44 |
Jefferson |
53.3 |
5.0 |
|
45 |
Allure |
63.3 |
5.0 |
|
46 |
Baronie |
51.7 |
5.0 |
|
47 |
Baruzo |
45.0 |
5.0 |
|
48 |
Apollo (PST-B3-180) |
55.0 |
5.0 |
|
49 |
Shamrock |
51.7 |
4.7 |
|
50 |
Ba77-702 |
43.3 |
4.7 |
|
51 |
Award |
55.0 |
4.7 |
|
52 |
Limousine |
55.0 |
4.7 |
|
53 |
Explorer (Pick-3561) |
56.7 |
4.7 |
|
54 |
Abbey |
46.7 |
4.7 |
|
55 |
Sodnet |
61.7 |
4.7 |
|
56 |
PST-BO-141 |
60.0 |
4.7 |
|
57 |
Challenger |
46.7 |
4.7 |
|
58 |
Midnight |
55.0 |
4.7 |
|
59 |
Nimbus |
55.0 |
4.7 |
|
60 |
Cardiff |
58.3 |
4.7 |
|
61 |
Ba 76-197 |
45.0 |
4.3 |
|
62 |
Baron |
45.0 |
4.3 |
|
63 |
NJ-GD |
55.0 |
4.3 |
|
64 |
Caliber |
51.7 |
4.3 |
|
65 |
Impact (J-1576) |
45.0 |
4.3 |
|
66 |
Arcadia (J-1936) |
56.7 |
4.3 |
|
67 |
SR 2100 |
50.0 |
4.3 |
|
68 |
SR 2109 |
53.3 |
4.3 |
|
69 |
SRX 2205 |
43.3 |
4.3 |
|
70 |
Ascot |
51.7 |
4.3 |
|
71 |
Ba 73-373 |
55.0 |
4.3 |
|
72 |
Misty (Ba 76-372) |
48.3 |
4.3 |
|
73 |
Ba 81-058 |
45.0 |
4.3 |
|
74 |
North Star (PST-A7-60) |
48.3 |
4.3 |
|
75 |
Conni |
53.3 |
4.3 |
|
76 |
Fortuna |
53.3 |
4.3 |
|
77 |
NJ-54 |
51.7 |
4.3 |
|
78 |
Lipoa |
46.7 |
4.0 |
|
79 |
BAR VB 6820 |
48.3 |
4.0 |
|
80 |
Marquis |
50.0 |
4.0 |
|
81 |
HV 242 |
43.3 |
4.0 |
|
82 |
Raven |
45.0 |
4.0 |
|
83 |
Pick 8 |
45.0 |
4.0 |
|
84 |
J-1555 |
48.3 |
4.0 |
|
85 |
Ba 81-220 |
45.0 |
4.0 |
|
86 |
H86-690 |
41.7 |
4.0 |
|
87 |
LTP-620 |
46.7 |
4.0 |
|
88 |
Dragon (ZPS-429) |
46.7 |
4.0 |
|
89 |
Livingston |
43.3 |
4.0 |
|
90 |
Absolute (MED-1497) |
43.3 |
3.7 |
|
91 |
Goldrush (Ba 87-102) |
41.7 |
3.7 |
|
92 |
Ba 81-113 |
41.7 |
3.3 |
|
93 |
PST-BO-165 |
31.7 |
3.3 |
|
94 |
Blacksburg |
36.7 |
3.3 |
|
95 |
ZPS-2183 |
40.0 |
3.3 |
|
96 |
Bartitia |
40.0 |
3.3 |
|
97 |
Blackstone (PST-638) |
31.7 |
3.0 |
|
98 |
SR 2000 |
33.3 |
2.7 |
|
99 |
Platini |
28.3 |
2.3 |
|
100 |
Pepaya (DP 37-192) |
18.3 |
2.0 |
|
101 |
BAR VB 233 |
18.3 |
2.0 |
|
102 |
BAR VB 5649 |
21.7 |
2.0 |
|
103 |
ZPS-309 |
15.0 |
1.0 |
|
LSD0.05 |
20.9 |
1.7 |
1Wear tolerance was assessed using a 9 to 1 scale with 9 = best and 1 = worst wear tolerance.
2These values represent the percentage of area per plot covered by turf in summer 1999.
|
ISU Horticulture:Publications:2000 Turfgrass Report | College of Agriculture |