Perennial Ryegrass Study - Established 1994
James R. Dickson and Nick E. Christians
This trial began in the fall of 1994 with the establishment of 96 cultivars of perennial ryegrass at the Iowa State University Horticulture Research Station. The study was established on an irrigated area that was maintained at a 2-inch mowing height and fertilized with 3 to 4 lb N/1000 ft2/yr. The area receives preemergence herbicide in the spring and was treated with a broadleaf herbicide in September of 1994.
Cultivars were evaluated for turf quality each month of the growing season. Visual quality was assessed using a 9 to 1 scale with 9 = best, 6 = lowest acceptable, and 1 = worst quality. The values listed under each month in Table 1 are the averages of ratings made on three replicated plots for the three studies. Yearly means of data from each month are listed in the last column. The cultivars are listed in descending order of average quality.
Data for genetic color (Gcol), spring greenup (Grn), and leaf texture (Leaf) are also included. 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.
Table 1. 1998 visual quality1 and other ratings2 for the national perennial ryegrass study.
|
Turf quality |
|||||||||||
|
Cultivar |
Gcol |
Grn |
Leaf |
May |
June |
July |
Aug |
Sept |
Oct |
Mean |
|
|
1 |
Divine |
7.0 |
5.7 |
6.0 |
5.0 |
7.7 |
5.7 |
6.0 |
7.3 |
7.7 |
6.6 |
|
2 |
Secretriat (RPBD) |
6.7 |
6.3 |
5.7 |
5.3 |
7.0 |
6.3 |
6.7 |
7.3 |
7.0 |
6.6 |
|
3 |
SR 4010 (SRX 4010) |
6.0 |
6.3 |
5.3 |
6.0 |
7.0 |
6.7 |
6.7 |
6.7 |
6.7 |
6.6 |
|
4 |
Line Drive (MB 47) |
7.7 |
6.3 |
5.3 |
5.3 |
6.3 |
6.0 |
6.7 |
7.3 |
7.3 |
6.5 |
|
5 |
Monterey (J-1706) |
7.0 |
5.7 |
5.7 |
6.0 |
7.7 |
5.7 |
6.3 |
6.7 |
6.7 |
6.5 |
|
6 |
SR 4400 (SRX 4400) |
7.0 |
5.3 |
6.0 |
5.7 |
7.0 |
6.7 |
6.0 |
7.0 |
6.7 |
6.5 |
|
7 |
Achiever |
6.3 |
6.0 |
5.7 |
5.3 |
7.0 |
6.0 |
5.7 |
7.0 |
7.3 |
6.4 |
|
8 |
Blackhawk (TMI-EXFLP94) |
7.0 |
6.0 |
5.0 |
5.3 |
7.3 |
6.3 |
6.0 |
7.0 |
6.7 |
6.4 |
|
9 |
Edge |
6.3 |
6.3 |
5.3 |
5.7 |
6.7 |
6.3 |
6.3 |
6.7 |
6.7 |
6.4 |
|
10 |
Excel (MB 1-5) |
7.3 |
6.0 |
5.3 |
6.0 |
7.7 |
6.0 |
5.3 |
7.0 |
6.3 |
6.4 |
|
11 |
Express |
6.7 |
6.0 |
6.0 |
5.7 |
6.7 |
6.0 |
6.0 |
7.3 |
7.0 |
6.4 |
|
12 |
Manhattan 3 |
6.3 |
5.3 |
5.7 |
5.0 |
7.0 |
5.7 |
6.3 |
7.3 |
7.0 |
6.4 |
|
13 |
Premier II (BAR USA 94-II) |
7.3 |
6.3 |
5.3 |
5.3 |
7.3 |
6.0 |
6.0 |
6.7 |
7.0 |
6.4 |
|
14 |
Spell Bound (WVPB-93-KFK) |
6.3 |
5.3 |
5.7 |
5.7 |
6.7 |
6.0 |
6.0 |
7.0 |
7.0 |
6.4 |
|
15 |
Wizard (MB 41) |
7.0 |
6.3 |
6.0 |
5.7 |
6.3 |
5.7 |
6.0 |
7.3 |
7.3 |
6.4 |
|
16 |
WX3-93 |
7.0 |
5.7 |
5.3 |
4.7 |
7.0 |
6.3 |
6.3 |
7.3 |
7.0 |
6.4 |
|
17 |
Accent |
6.7 |
5.3 |
5.0 |
4.7 |
7.0 |
6.0 |
6.3 |
7.0 |
6.7 |
6.3 |
|
18 |
Assure |
6.7 |
6.3 |
5.3 |
5.0 |
6.7 |
6.0 |
6.0 |
7.0 |
7.0 |
6.3 |
|
19 |
Brightstar |
7.3 |
5.7 |
5.3 |
5.0 |
7.0 |
6.0 |
5.7 |
7.0 |
7.0 |
6.3 |
|
20 |
Buccaneer II (WVPB 92-4) |
6.7 |
5.7 |
5.3 |
5.7 |
7.3 |
6.0 |
5.3 |
7.0 |
6.7 |
6.3 |
|
21 |
Caddieshack (MED 5071) |
6.3 |
5.7 |
5.7 |
5.3 |
6.7 |
6.0 |
6.0 |
7.0 |
7.0 |
6.3 |
|
22 |
CAS-LP23 |
7.0 |
6.0 |
6.0 |
5.3 |
6.7 |
6.0 |
6.0 |
7.0 |
6.7 |
6.3 |
|
23 |
ISI-MHB |
7.0 |
5.7 |
6.0 |
5.0 |
6.3 |
6.0 |
6.3 |
7.0 |
7.0 |
6.3 |
|
24 |
Mardigras (ZPS-2NV) |
6.3 |
6.0 |
5.7 |
5.7 |
6.3 |
6.3 |
6.3 |
6.7 |
6.3 |
6.3 |
|
25 |
Mb 45 |
7.7 |
5.0 |
5.7 |
4.7 |
7.7 |
6.0 |
6.0 |
7.0 |
6.7 |
6.3 |
|
26 |
Nobility |
7.3 |
5.0 |
5.0 |
5.3 |
7.7 |
6.0 |
5.3 |
6.7 |
6.7 |
6.3 |
|
27 |
Omega3 (ZPS-2DR-94) |
7.0 |
5.7 |
6.0 |
5.7 |
7.3 |
6.0 |
6.0 |
6.7 |
6.3 |
6.3 |
|
28 |
PST-2CB |
7.3 |
6.0 |
5.7 |
5.0 |
6.7 |
6.0 |
6.0 |
7.0 |
7.0 |
6.3 |
|
29 |
Saturn II (ZPS-2ST) |
7.3 |
5.3 |
5.7 |
5.7 |
6.3 |
5.7 |
6.0 |
7.0 |
7.3 |
6.3 |
|
30 |
Sonata (PST-2R3) |
7.0 |
5.7 |
5.0 |
5.3 |
7.3 |
5.7 |
6.3 |
7.0 |
6.3 |
6.3 |
|
31 |
Stallion Select |
7.0 |
6.0 |
5.7 |
5.0 |
6.7 |
6.7 |
5.7 |
7.0 |
6.7 |
6.3 |
|
32 |
Vivid |
7.0 |
5.3 |
5.7 |
5.0 |
8.0 |
6.0 |
5.7 |
7.0 |
6.3 |
6.3 |
|
33 |
Wind Star (PST-28M) |
6.7 |
6.0 |
5.3 |
5.3 |
7.7 |
6.0 |
6.0 |
6.7 |
6.3 |
6.3 |
|
34 |
ASP400 (APR 106) |
6.3 |
5.0 |
5.0 |
5.3 |
6.3 |
6.0 |
6.0 |
6.7 |
7.0 |
6.2 |
|
35 |
Blazer III (Pick 928) |
6.7 |
6.0 |
6.0 |
5.0 |
7.0 |
6.0 |
5.7 |
7.0 |
6.7 |
6.2 |
|
36 |
Catalina (PST-GH-94) |
7.7 |
5.3 |
6.3 |
4.7 |
7.3 |
5.7 |
5.7 |
7.0 |
7.0 |
6.2 |
|
37 |
Chaparral (PST-2DLM) |
7.3 |
6.0 |
6.3 |
4.7 |
6.3 |
6.0 |
5.3 |
7.3 |
7.7 |
6.2 |
|
38 |
Cutter |
6.3 |
5.3 |
6.0 |
5.7 |
6.3 |
5.7 |
6.0 |
7.0 |
6.3 |
6.2 |
|
39 |
Dancer |
7.3 |
5.7 |
5.3 |
5.3 |
7.0 |
6.0 |
5.7 |
7.0 |
6.3 |
6.2 |
|
40 |
Imagine |
7.3 |
5.3 |
6.3 |
4.3 |
6.3 |
6.3 |
6.0 |
7.0 |
7.0 |
6.2 |
|
41 |
KOOS 93-6 |
6.7 |
5.0 |
5.7 |
5.3 |
7.0 |
6.0 |
6.0 |
6.3 |
6.3 |
6.2 |
|
42 |
Laredo |
6.3 |
6.3 |
5.3 |
5.3 |
7.0 |
5.7 |
6.0 |
6.7 |
6.7 |
6.2 |
|
43 |
LRF-94-CB |
7.7 |
6.0 |
6.3 |
4.7 |
6.3 |
5.7 |
6.7 |
7.0 |
7.0 |
6.2 |
|
44 |
Night Hawk |
7.3 |
6.0 |
5.7 |
5.3 |
6.3 |
6.0 |
5.7 |
7.0 |
7.0 |
6.2 |
|
45 |
Omni |
6.3 |
5.3 |
6.0 |
4.7 |
7.0 |
6.3 |
5.7 |
7.0 |
6.3 |
6.2 |
|
46 |
Panther (ZPS-PR1) |
6.7 |
5.7 |
5.3 |
5.0 |
7.0 |
6.0 |
6.0 |
6.7 |
6.3 |
6.2 |
|
47 |
Pennant II (MB 42) |
8.0 |
5.7 |
5.7 |
5.0 |
7.3 |
5.7 |
5.7 |
7.0 |
6.7 |
6.2 |
|
48 |
Protocol (KOOS 93-3) |
6.7 |
5.3 |
5.3 |
5.7 |
6.0 |
6.0 |
6.3 |
7.0 |
6.3 |
6.2 |
|
49 |
PS-D-9 |
6.7 |
5.7 |
5.7 |
5.0 |
6.7 |
5.7 |
6.0 |
7.0 |
6.7 |
6.2 |
|
50 |
Quickstart |
6.7 |
5.7 |
5.3 |
4.3 |
7.0 |
6.3 |
5.7 |
7.0 |
7.0 |
6.2 |
|
51 |
R2 (ISI-R2) |
6.7 |
5.7 |
5.7 |
5.7 |
6.3 |
6.0 |
5.7 |
7.0 |
6.3 |
6.2 |
|
52 |
Roadrunner (PST-2ET) |
6.7 |
6.3 |
5.7 |
5.0 |
7.0 |
5.7 |
6.0 |
7.0 |
6.3 |
6.2 |
|
53 |
Stardance (PST-2FE) |
7.0 |
6.0 |
6.0 |
4.7 |
7.0 |
6.3 |
5.3 |
7.0 |
6.7 |
6.2 |
|
54 |
Sunshine(Pick LP 102-92) |
7.7 |
6.0 |
6.0 |
4.7 |
7.3 |
5.7 |
6.0 |
7.0 |
6.7 |
6.2 |
|
55 |
Academy (PC-93-1) |
6.3 |
5.7 |
5.0 |
5.3 |
7.0 |
5.7 |
6.0 |
6.3 |
6.3 |
6.1 |
|
56 |
APR 124 |
6.3 |
5.3 |
5.3 |
5.3 |
6.3 |
5.7 |
5.7 |
7.0 |
6.3 |
6.1 |
|
57 |
Elf |
6.0 |
6.0 |
5.7 |
5.3 |
7.3 |
6.0 |
5.7 |
6.3 |
5.7 |
6.1 |
|
58 |
Esquire |
7.3 |
5.7 |
5.3 |
5.0 |
7.0 |
6.0 |
5.3 |
6.7 |
6.7 |
6.1 |
|
59 |
Majesty (MB 43) |
7.0 |
6.0 |
5.7 |
5.0 |
6.7 |
6.3 |
6.0 |
6.3 |
6.0 |
6.1 |
|
60 |
MB 44 |
6.7 |
5.7 |
6.7 |
5.3 |
7.7 |
5.7 |
6.0 |
6.0 |
5.7 |
6.1 |
|
61 |
Palmer III (LRF-94-MPRH) |
7.0 |
5.3 |
6.0 |
5.3 |
6.7 |
6.0 |
6.3 |
6.3 |
5.7 |
6.1 |
|
62 |
Riviera II |
7.0 |
5.7 |
5.3 |
4.7 |
6.7 |
6.0 |
6.0 |
7.0 |
6.3 |
6.1 |
|
63 |
APR 066 |
6.3 |
6.0 |
5.7 |
5.0 |
6.0 |
5.7 |
6.0 |
6.7 |
6.7 |
6.0 |
|
64 |
APR 131 |
7.0 |
6.0 |
5.7 |
5.0 |
6.0 |
5.7 |
6.0 |
6.7 |
6.7 |
6.0 |
|
65 |
BAR ER 5813 |
6.7 |
5.3 |
6.0 |
5.7 |
7.0 |
5.7 |
6.0 |
6.0 |
5.7 |
6.0 |
|
66 |
Passport (PST-2FF) |
7.0 |
5.7 |
5.7 |
4.7 |
6.3 |
5.7 |
5.7 |
7.0 |
6.7 |
6.0 |
|
67 |
Pegasus |
6.7 |
6.3 |
5.7 |
5.0 |
6.3 |
5.7 |
5.0 |
7.3 |
6.7 |
6.0 |
|
68 |
Precision |
6.3 |
6.0 |
5.7 |
5.3 |
6.3 |
5.7 |
5.7 |
6.7 |
6.3 |
6.0 |
|
69 |
Prizm |
6.3 |
6.3 |
5.3 |
4.7 |
6.3 |
6.0 |
5.7 |
7.0 |
6.3 |
6.0 |
|
70 |
SR 4200 |
7.0 |
6.3 |
5.7 |
5.3 |
6.3 |
6.0 |
5.7 |
6.3 |
6.3 |
6.0 |
|
71 |
Stallion Supreme (PSI-E-1) |
6.3 |
5.3 |
5.7 |
5.3 |
6.3 |
6.0 |
6.0 |
6.3 |
6.0 |
6.0 |
|
72 |
Top Hat |
7.3 |
6.0 |
6.3 |
4.0 |
6.7 |
6.3 |
5.7 |
6.7 |
6.7 |
6.0 |
|
73 |
WVPB-PR-C-2 |
7.0 |
5.7 |
5.3 |
5.3 |
6.3 |
6.3 |
5.7 |
6.3 |
6.0 |
6.0 |
|
74 |
Advantage |
7.3 |
5.0 |
5.7 |
5.0 |
6.3 |
5.7 |
5.7 |
6.7 |
6.0 |
5.9 |
|
75 |
Citation III (PST-2DGR) |
6.7 |
5.3 |
6.3 |
4.3 |
6.3 |
6.0 |
5.7 |
6.7 |
6.7 |
5.9 |
|
76 |
DLP 1305 |
6.3 |
6.0 |
5.7 |
5.3 |
6.3 |
5.3 |
5.7 |
6.7 |
60 |
5.9 |
|
77 |
DSV NA 9401 |
6.0 |
5.3 |
5.3 |
4.7 |
5.0 |
5.7 |
6.3 |
7.3 |
6.7 |
5.9 |
|
78 |
Legacy II (LESCO-TWF) |
7.3 |
5.7 |
5.0 |
5.7 |
6.7 |
5.3 |
5.7 |
6.3 |
6.0 |
5.9 |
|
79 |
Morning Star |
7.0 |
5.0 |
5.3 |
5.3 |
5.3 |
6.0 |
5.7 |
7.0 |
6.3 |
5.9 |
|
80 |
MVF-4-1 |
7.0 |
5.3 |
5.7 |
5.3 |
7.0 |
5.7 |
5.0 |
6.7 |
6.0 |
5.9 |
|
81 |
Navajo |
7.0 |
6.3 |
5.3 |
4.7 |
6.0 |
5.7 |
6.0 |
7.0 |
6.3 |
5.9 |
|
82 |
Top Gun (J-17030 |
6.3 |
6.7 |
6.0 |
4.3 |
6.3 |
6.0 |
5.7 |
7.0 |
6.0 |
5.9 |
|
83 |
WX3-91 |
6.0 |
5.3 |
5.7 |
4.3 |
6.3 |
6.0 |
6.0 |
6.7 |
6.0 |
5.9 |
|
84 |
Brightstar II (PST-2M3) |
7.7 |
5.7 |
7.0 |
3.3 |
6.3 |
6.3 |
6.0 |
6.7 |
6.3 |
5.8 |
|
85 |
Calypso II |
6.7 |
6.0 |
5.7 |
4.7 |
6.3 |
6.0 |
6.0 |
6.0 |
6.0 |
5.8 |
|
86 |
Head Start (Pick PR 84-91) |
7.3 |
5.7 |
6.0 |
5.0 |
6.3 |
5.7 |
5.7 |
6.3 |
6.0 |
5.8 |
|
87 |
NINE-O-ONE |
7.3 |
5.0 |
5.3 |
4.3 |
6.3 |
5.3 |
5.3 |
7.0 |
6.3 |
5.8 |
|
88 |
Repell III (LRF-94-C7) |
7.7 |
6.0 |
6.3 |
4.0 |
6.0 |
5.7 |
6.0 |
6.7 |
6.7 |
5.8 |
|
89 |
Saturn |
6.7 |
6.0 |
5.3 |
4.7 |
6.0 |
5.7 |
5.0 |
7.0 |
6.3 |
5.8 |
|
90 |
Williamsburg |
6.0 |
5.7 |
5.3 |
5.3 |
6.7 |
6.0 |
5.3 |
6.0 |
5.7 |
5.8 |
|
91 |
Wind Dance (MB 46) |
7.7 |
5.3 |
6.0 |
4.0 |
5.3 |
5.3 |
5.0 |
7.3 |
7.7 |
5.8 |
|
92 |
Figaro |
6.7 |
5.7 |
6.0 |
5.0 |
5.7 |
5.7 |
5.3 |
6.7 |
6.0 |
5.7 |
|
93 |
DSV NA 9402 |
6.3 |
5.3 |
5.3 |
5.3 |
5.7 |
5.0 |
5.7 |
6.3 |
5.7 |
5.6 |
|
94 |
Prelude III (LRF-94-B6) |
7.7 |
5.3 |
6.7 |
4.0 |
6.0 |
5.7 |
5.3 |
6.7 |
6.0 |
5.6 |
|
95 |
Pennfine |
7.0 |
5.3 |
7.3 |
4.7 |
5.3 |
5.7 |
4.3 |
6.7 |
6.3 |
5.5 |
|
96 |
Linn |
5.7 |
5.0 |
7.7 |
3.0 |
4.0 |
3.3 |
4.0 |
6.0 |
5.7 |
4.3 |
|
LSD0.05 |
1.3 |
NS |
1.7 |
1.9 |
1.4 |
1.2 |
1.4 |
NS |
1.9 |
0.7 |
|
1Visual quality was assessed using a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = worst quality.
2Genetic color (Gcol) was rated using a 9 to 1 scale: 9 = dark and 1 = light green. Spring greenup (Grn) was determined using a 9 to 1 scale: 9 = green and 1 = dormant. Leaf texture (Leaf) was assessed with a 9 to 1 scale: 9 = fine and 1 = coarse texture.
NS = means are not significantly different at the 0.05 level.
 |
ISU Horticulture:Publications:1999 Turfgrass Report | College of Agriculture |