1998 Iowa Turfgrass Research Report
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 based on a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = poorest 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 on genetic color (Gcol), greenup (Grn), and leaf texture (Leaf) also are included.
Notice that the first 77 cultivars received mean ratings of 6 or above for the 1997 season. There is now a wide selection of high-quality perennial ryegrass varieties to choose from for this region. Perennial ryegrass is quite susceptible to winter damage. There was no winter damage in the spring of 1997. Last year's report contains information on the effect of winter damage.
Table 1. The 1997 quality and other ratings for the national perennial ryegrass study established in 1994.
|
|
Cultivar |
|
Grn |
|
|
|
|
|
|
|
|
|
1 |
Premier II (Bar USA 94-II) |
6.0 |
6.3 |
5.7 |
6.0 |
7.0 |
6.3 |
7.0 |
8.0 |
7.3 |
6.9 |
|
2 |
Riviera II |
5.0 |
6.3 |
5.0 |
6.7 |
6.3 |
6.7 |
6.7 |
7.7 |
7.3 |
6.9 |
|
3 |
Secretariat (RPBD) |
5.7 |
6.3 |
5.7 |
6.3 |
7.0 |
6.7 |
7.0 |
7.0 |
7.3 |
6.9 |
|
4 |
Manhattan 3 |
5.7 |
5.7 |
5.0 |
6.3 |
6.7 |
6.0 |
6.3 |
7.7 |
7.7 |
6.8 |
|
5 |
Divine |
5.7 |
6.3 |
4.7 |
6.7 |
6.3 |
6.7 |
6.7 |
7.0 |
7.0 |
6.7 |
|
6 |
Line Drive (MB 47) |
5.7 |
6.3 |
5.3 |
6.3 |
5.7 |
5.7 |
7.0 |
8.0 |
7.7 |
6.7 |
|
7 |
Majesty (MB 43) |
5.7 |
6.0 |
5.7 |
6.3 |
7.0 |
6.0 |
6.3 |
7.3 |
7.3 |
6.7 |
|
8 |
Palmer III (LRF-94-MPRH) |
6.0 |
5.3 |
5.0 |
6.0 |
6.3 |
6.3 |
7.0 |
7.3 |
7.0 |
6.7 |
|
9 |
Wind Star (PST-28M) |
5.0 |
6.3 |
5.0 |
6.0 |
7.0 |
6.3 |
7.0 |
7.0 |
6.7 |
6.7 |
|
10 |
Calypso II |
5.0 |
5.7 |
5.3 |
6.0 |
6.0 |
6.3 |
6.0 |
7.7 |
7.3 |
6.6 |
|
11 |
ISI-MHB |
4.7 |
5.3 |
5.0 |
6.3 |
7.0 |
6.3 |
6.7 |
6.7 |
6.7 |
6.6 |
|
12 |
Mardigras (ZPS-2NV) |
4.7 |
5.7 |
5.3 |
6.3 |
6.0 |
7.0 |
6.3 |
6.7 |
7.0 |
6.6 |
|
13 |
MB 45 |
6.0 |
5.7 |
5.0 |
6.3 |
6.3 |
5.3 |
6.0 |
7.7 |
7.7 |
6.6 |
|
14 |
Passport (PST-2FF) |
5.0 |
6.3 |
5.0 |
6.7 |
7.0 |
6.0 |
6.7 |
6.7 |
6.7 |
6.6 |
|
15 |
Prizm |
5.3 |
6.0 |
5.3 |
6.0 |
6.7 |
6.0 |
7.0 |
7.0 |
7.0 |
6.6 |
|
16 |
Assure |
5.0 |
7.0 |
5.3 |
6.7 |
5.7 |
6.3 |
6.3 |
7.0 |
7.0 |
6.5 |
|
17 |
Blackhawk (TMI-EXFLP94) |
4.7 |
5.7 |
5.0 |
6.7 |
6.0 |
6.3 |
6.7 |
6.7 |
6.7 |
6.5 |
|
18 |
Caddieshack (MED 5071) |
5.3 |
6.0 |
5.0 |
5.7 |
6.3 |
6.3 |
7.3 |
6.7 |
6.7 |
6.5 |
|
19 |
Elf |
5.7 |
7.0 |
6.0 |
6.3 |
6.7 |
6.0 |
6.7 |
6.7 |
6.7 |
6.5 |
|
20 |
J-1706 |
5.3 |
5.7 |
5.3 |
5.0 |
5.7 |
6.3 |
6.7 |
7.7 |
7.7 |
6.5 |
|
21 |
SR 4200 |
4.7 |
6.3 |
5.0 |
6.3 |
6.7 |
5.7 |
7.0 |
6.3 |
7.0 |
6.5 |
|
22 |
Stallion Select |
5.0 |
6.7 |
5.0 |
6.0 |
6.7 |
6.3 |
7.0 |
6.3 |
6.7 |
6.5 |
|
23 |
Wizard (MB 41) |
5.7 |
7.0 |
5.3 |
6.3 |
7.0 |
6.0 |
6.3 |
6.7 |
6.7 |
6.5 |
|
24 |
DLP 1305 |
4.0 |
6.3 |
5.0 |
6.3 |
6.7 |
6.0 |
5.7 |
6.7 |
7.0 |
6.4 |
|
25 |
Excel (MB 1-5) |
5.7 |
7.0 |
5.3 |
6.0 |
6.7 |
5.0 |
6.0 |
7.3 |
7.3 |
6.4 |
|
26 |
Express |
4.0 |
6.0 |
5.0 |
6.0 |
6.3 |
6.0 |
6.3 |
6.7 |
7.0 |
6.4 |
|
27 |
MB 44 |
6.0 |
5.7 |
5.7 |
5.3 |
6.7 |
6.0 |
6.3 |
7.0 |
7.0 |
6.4 |
|
28 |
Omega3 (ZPS-2DR-94) |
5.7 |
6.0 |
5.3 |
6.0 |
6.0 |
6.0 |
6.3 |
7.0 |
7.0 |
6.4 |
|
29 |
Panther (ZPS-PR1) |
5.3 |
5.7 |
5.7 |
6.0 |
6.3 |
5.7 |
7.3 |
6.7 |
6.3 |
6.4 |
|
30 |
Pennant II (MB 42) |
6.0 |
5.3 |
5.0 |
5.7 |
5.3 |
6.0 |
6.3 |
7.7 |
7.7 |
6.4 |
|
31 |
R2 (ISI-R2) |
4.3 |
5.7 |
5.0 |
5.7 |
6.3 |
6.0 |
7.0 |
6.3 |
7.3 |
6.4 |
|
32 |
Sonata (PST-2R3) |
5.3 |
5.3 |
5.7 |
5.0 |
5.7 |
6.0 |
6.7 |
7.7 |
7.3 |
6.4 |
|
33 |
SR 4400 (SRX 4400) |
4.3 |
5.7 |
5.0 |
5.7 |
6.0 |
7.0 |
6.3 |
7.0 |
6.7 |
6.4 |
|
34 |
Top Hat |
5.0 |
5.7 |
5.7 |
6.3 |
6.3 |
6.7 |
7.0 |
6.0 |
6.3 |
6.4 |
|
35 |
WVPB 92-4 |
4.3 |
6.0 |
5.0 |
5.7 |
6.7 |
6.7 |
6.0 |
6.7 |
6.7 |
6.4 |
|
36 |
WVPB-PR-C-2 |
5.0 |
6.0 |
5.0 |
6.3 |
7.3 |
5.7 |
6.3 |
6.3 |
6.7 |
6.4 |
|
37 |
Accent |
5.0 |
5.3 |
5.0 |
5.7 |
6.3 |
6.0 |
7.0 |
6.3 |
6.7 |
6.3 |
|
38 |
APR 106 |
4.3 |
5.7 |
5.0 |
5.3 |
6.3 |
6.3 |
6.7 |
6.7 |
6.3 |
6.3 |
|
39 |
Blazer III (Pick 928) |
4.7 |
5.7 |
5.3 |
5.3 |
6.3 |
6.0 |
6.0 |
7.0 |
7.0 |
6.3 |
|
40 |
Brightstar |
5.3 |
5.0 |
5.0 |
5.3 |
5.7 |
6.3 |
5.7 |
7.3 |
7.3 |
6.3 |
|
41 |
CAS-LP23 |
5.3 |
6.3 |
5.3 |
6.0 |
6.0 |
6.0 |
6.0 |
7.0 |
6.7 |
6.3 |
|
42 |
Legacy II (Lesco-TWF) |
5.7 |
5.3 |
5.0 |
6.0 |
5.7 |
5.7 |
6.7 |
6.7 |
7.0 |
6.3 |
|
43 |
Night Hawk |
5.0 |
6.0 |
5.0 |
6.0 |
6.0 |
6.0 |
6.0 |
6.7 |
7.0 |
6.3 |
|
44 |
Nobility |
4.7 |
5.0 |
5.0 |
5.3 |
6.3 |
5.7 |
6.7 |
6.7 |
7.0 |
6.3 |
|
45 |
Omni |
5.0 |
5.7 |
5.3 |
5.7 |
6.0 |
6.3 |
6.3 |
6.3 |
7.0 |
6.3 |
|
46 |
Precision |
4.3 |
6.0 |
5.0 |
6.3 |
6.0 |
6.3 |
6.3 |
6.7 |
6.3 |
6.3 |
|
47 |
PS-D-9 |
5.3 |
5.3 |
5.3 |
5.7 |
6.0 |
6.3 |
6.7 |
6.3 |
7.0 |
6.3 |
|
48 |
Saturn II (ZPS-2ST) |
5.7 |
6.3 |
5.0 |
6.3 |
6.0 |
5.7 |
6.3 |
6.7 |
7.0 |
6.3 |
|
49 |
WX3-93 |
5.0 |
5.0 |
5.7 |
5.7 |
6.0 |
6.0 |
6.0 |
7.0 |
7.0 |
6.3 |
|
50 |
Academy (PC-93-1) |
5.0 |
5.3 |
5.0 |
5.3 |
6.0 |
5.7 |
6.3 |
6.7 |
7.0 |
6.2 |
|
51 |
Achiever |
5.3 |
6.0 |
5.0 |
5.7 |
6.3 |
6.0 |
5.7 |
6.7 |
6.7 |
6.2 |
|
52 |
Advantage |
5.7 |
5.3 |
5.0 |
5.0 |
6.0 |
5.7 |
6.7 |
7.0 |
6.7 |
6.2 |
|
53 |
Catalina (PST-GH-94) |
5.7 |
5.0 |
5.7 |
5.3 |
5.3 |
6.0 |
6.3 |
7.3 |
7.0 |
6.2 |
|
54 |
Cutter |
5.0 |
5.3 |
5.0 |
5.7 |
5.7 |
6.7 |
6.0 |
6.3 |
7.0 |
6.2 |
|
55 |
Esquire |
5.0 |
5.7 |
5.0 |
5.7 |
6.7 |
6.0 |
6.0 |
6.0 |
6.7 |
6.2 |
|
56 |
MVF-4-1 |
4.7 |
6.3 |
5.3 |
6.0 |
5.7 |
6.3 |
6.0 |
6.3 |
6.7 |
6.2 |
|
57 |
Navajo |
5.0 |
6.7 |
5.0 |
6.3 |
5.7 |
5.3 |
6.0 |
7.0 |
7.0 |
6.2 |
|
58 |
Pick LP 102-92 |
6.0 |
5.7 |
5.3 |
6.0 |
5.3 |
5.7 |
6.7 |
6.7 |
6.7 |
6.2 |
|
59 |
SR 4010 (SRX 4010) |
4.7 |
5.7 |
5.0 |
5.3 |
5.3 |
6.7 |
7.3 |
6.3 |
6.3 |
6.2 |
|
60 |
Stallion Supreme (PSI-E-1) |
5.0 |
5.7 |
5.3 |
5.7 |
5.7 |
5.7 |
6.0 |
7.0 |
7.0 |
6.2 |
|
61 |
Stardance (PST-2FE) |
5.3 |
5.7 |
5.0 |
5.0 |
5.7 |
6.0 |
6.0 |
7.3 |
7.3 |
6.2 |
|
62 |
Top Gun (J-1703) |
5.0 |
6.0 |
5.0 |
5.3 |
6.0 |
6.0 |
6.3 |
6.7 |
7.0 |
6.2 |
|
63 |
Williamsburg |
4.3 |
6.3 |
5.3 |
5.7 |
7.0 |
5.7 |
6.3 |
6.3 |
6.3 |
6.2 |
|
64 |
WVPB-93-KFK |
5.0 |
6.0 |
5.0 |
6.0 |
6.7 |
5.7 |
6.0 |
6.3 |
6.7 |
6.2 |
|
65 |
APR 066 |
4.7 |
5.0 |
5.0 |
5.3 |
5.7 |
6.3 |
6.3 |
6.0 |
6.7 |
6.1 |
|
66 |
BAR ER 5813 |
4.7 |
5.0 |
5.0 |
5.0 |
6.7 |
5.0 |
6.0 |
7.0 |
7.0 |
6.1 |
|
67 |
Brightstar II (PST-2M3) |
6.0 |
5.3 |
5.3 |
5.0 |
5.3 |
5.3 |
6.3 |
7.3 |
7.0 |
6.1 |
|
68 |
Citation III (PST-2DGR) |
5.7 |
6.0 |
5.3 |
5.7 |
5.0 |
5.7 |
6.0 |
7.0 |
7.3 |
6.1 |
|
69 |
Edge |
5.0 |
6.3 |
5.0 |
5.7 |
6.3 |
6.0 |
5.3 |
6.3 |
6.7 |
6.1 |
|
70 |
Head Start (Pick PR 84-91) |
5.0 |
4.7 |
5.0 |
5.0 |
5.7 |
6.0 |
5.3 |
7.3 |
7.0 |
6.1 |
|
71 |
Koos 93-6 |
4.7 |
5.3 |
5.3 |
5.7 |
6.0 |
6.0 |
6.0 |
6.3 |
6.3 |
6.1 |
|
72 |
Pegasus |
4.7 |
6.0 |
5.0 |
5.7 |
5.7 |
6.0 |
6.0 |
6.7 |
6.7 |
6.1 |
|
73 |
Quickstart |
4.7 |
6.3 |
5.0 |
5.3 |
5.7 |
6.3 |
6.7 |
6.3 |
6.3 |
6.1 |
|
74 |
Vivid |
5.0 |
4.7 |
5.0 |
5.3 |
5.3 |
6.3 |
6.0 |
6.3 |
7.0 |
6.1 |
|
75 |
Wind Dancer (MB 46) |
5.7 |
5.0 |
5.3 |
5.3 |
6.0 |
5.7 |
6.3 |
6.3 |
6.7 |
6.1 |
|
76 |
Dancer |
5.0 |
5.3 |
5.3 |
5.0 |
6.3 |
5.3 |
6.0 |
6.7 |
6.7 |
6.0 |
|
77 |
PST-2CB |
5.3 |
6.7 |
5.0 |
5.0 |
5.3 |
6.0 |
6.3 |
6.7 |
6.7 |
6.0 |
|
78 |
APR 124 |
4.7 |
5.3 |
5.0 |
5.0 |
6.0 |
6.3 |
5.7 |
6.0 |
6.7 |
5.9 |
|
79 |
APR 131 |
4.7 |
5.7 |
5.0 |
5.7 |
5.3 |
5.7 |
6.3 |
6.3 |
6.3 |
5.9 |
|
80 |
Chaparral (PST-2DLM) |
6.0 |
5.7 |
5.0 |
4.7 |
5.7 |
6.0 |
6.0 |
6.7 |
6.3 |
5.9 |
|
81 |
Imagine |
5.7 |
5.3 |
4.7 |
4.3 |
5.7 |
5.7 |
6.0 |
7.0 |
7.0 |
5.9 |
|
82 |
Koos 93-3 |
4.7 |
5.7 |
5.0 |
4.7 |
6.0 |
5.3 |
6.7 |
6.3 |
6.3 |
5.9 |
|
83 |
Morning Star |
4.7 |
5.7 |
5.0 |
5.3 |
6.0 |
6.3 |
6.3 |
5.7 |
6.0 |
5.9 |
|
84 |
Repell III (LRF-94-C7) |
6.0 |
5.3 |
5.7 |
4.7 |
5.7 |
5.3 |
6.0 |
7.0 |
7.0 |
5.9 |
|
85 |
Saturn |
4.0 |
6.3 |
5.0 |
5.7 |
5.3 |
5.3 |
5.7 |
6.7 |
6.7 |
5.9 |
|
86 |
Figaro |
4.7 |
5.3 |
5.3 |
4.7 |
6.0 |
5.3 |
5.7 |
6.3 |
6.7 |
5.8 |
|
87 |
Laredo |
5.7 |
5.3 |
5.3 |
4.7 |
5.3 |
5.7 |
6.3 |
6.3 |
6.7 |
5.8 |
|
88 |
LRF-94-CB |
6.0 |
6.0 |
5.0 |
5.3 |
6.0 |
5.0 |
6.0 |
6.3 |
6.3 |
5.8 |
|
89 |
Prelude III (LRF-94-86) |
6.0 |
5.7 |
5.3 |
5.0 |
5.7 |
5.3 |
5.7 |
6.0 |
7.0 |
5.8 |
|
90 |
WX3-91 |
4.7 |
6.3 |
4.7 |
5.3 |
6.0 |
5.0 |
5.7 |
6.0 |
6.0 |
5.7 |
|
91 |
Roadrunner (PST-2ET) |
5.3 |
6.0 |
5.0 |
5.0 |
4.7 |
5.3 |
6.0 |
6.3 |
6.3 |
5.6 |
|
92 |
Nine-o-one |
5.3 |
6.0 |
5.7 |
4.7 |
4.7 |
5.3 |
5.7 |
6.0 |
6.7 |
5.5 |
|
93 |
DSV NA 9401 |
4.0 |
4.7 |
5.0 |
5.0 |
5.0 |
3.7 |
5.7 |
5.3 |
5.7 |
5.1 |
|
94 |
DSV NA 9402 |
4.0 |
4.7 |
5.0 |
4.3 |
5.7 |
4.0 |
5.0 |
5.3 |
6.0 |
5.1 |
|
95 |
Pennfine |
4.0 |
5.3 |
4.7 |
4.3 |
4.3 |
6.3 |
4.3 |
4.3 |
4.3 |
4.7 |
|
96 |
Linn |
3.3 |
3.0 |
4.3 |
3.0 |
3.0 |
3.0 |
3.0 |
4.0 |
4.0 |
3.3 |
|
|
LSD(0.05) |
0.7 |
2.6 |
1.1 |
1.9 |
2.1 |
1.4 |
1.3 |
0.9 |
1.0 |
0.7 |
Gcolor (Genetic color): 9 = dark green and 1 = light green.
Ltex (Leaf texture): 9 = fine and 1 = coarse.
Grnup (Greenup): 9 = best and 1 = poorest greenup.
Quality based on 9 to 1 scale: 9 = best
quality, 6 = lowest acceptable quality, and 1 = poorest
quality.
 |
ISU Horticulture:Publications:1998 Turfgrass Report | College of Agriculture |