1998 Iowa Turfgrass Research Report


1998 Iowa Turfgrass Research Report

Results of Regional Kentucky Bluegrass Cultivar Trials

Nick E. Christians, David D. Minner, and James R. Dickson

The National Turfgrass Evaluation Program (NTEP) has sponsored several regional Kentucky bluegrass cultivar trials conducted at most of the northern agricultural experiment stations. The current tests at Iowa State University include a high-maintenance trial with 103 cultivars, a second high-maintenance trial with the same cultivars that is subjected to compaction treatments, and a low-maintenance study with 21 cultivars. The high-maintenance trials receive 4 lb. N/1000 ft2/yr, and are irrigated as needed. The low maintenance trial is not irrigated and receives 1 lb. N/1000 ft2/yr. All three trials are mowed at two inches. The objective of the high-maintenance study is to investigate cultivar performance under a cultural regime similar to that used on irrigated home lawns in Iowa. The objective of the low-maintenance study is to observe the cultivar response under conditions similar to those found in non-irrigated lawns that receive a standard lawn care program. The objective of the traffic study is determine what cultivars perform better on intense traffic areas such as sports fields. Traffic treatments will begin in 1998. A non-traffic recovery period will immediately follow each traffic period. Traffic will be applied using a differential slip-type traffic simulator (Brouwer model). One pass over the entire plot area will be made every Monday, Wednesday, and Friday during the traffic period with the traffic simulator.

The values listed under each month in Tables 1, 2, and 3 are the averages of visual quality ratings made on three replicated plots for the three studies. Visual quality was based on a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = poorest 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 1997 season. The cultivars are listed in descending order of average quality.

Data for genetic color (Gcol), spring greenup (Grn), leaf texture (Leaf), and leaf spot (Lspot) also are included for the high-maintenance, irrigated trial. Genetic color (Gcol), spring greenup (Grn), and leaf texture (Leaf) ratings are listed for the low-maintenance trial. Genetic color (Gcol), spring greenup (Grn), leaf texture (Leaf), spring density (Sden), summer density (Suden), fall density (Fden), and percentage spring ground cover (% cov) data are listed for the high-maintenance, irrigated traffic trial.

The 1997 season began with high rainfall and cool temperatures and ended cool and dry.

 

Table 1. The 1997 ratings for the 1995 high-maintenance, irrigated Kentucky bluegrass trial.

 

 

 

 

 

 

Turf Quality

 

Cultivar

Gcol
Grn
Leaf
Lspot
May
June
July
Aug
Sept
Oct
Mean

1

ZPS-2572

6.0
6.0
5.3
7.0
5.7
6.7
7.3
6.7
8.0
7.7
7.0

2

Absolute (MED-1497)

5.7
6.0
4.7
7.0
6.0
7.3
7.7
6.3
7.3
7.0
6.9

3

Award

6.0
5.7
5.0
6.0
6.0
6.3
7.3
6.3
7.7
7.7
6.9

4

PST-B2-42

4.7
7.0
5.3
5.7
6.7
7.0
6.3
6.3
7.3
7.3
6.8

5

NJ 1190

3.7
7.0
5.7
6.7
5.3
6.3
6.7
7.3
7.3
7.3
6.7

6

Unique

4.3
6.7
4.3
5.0
7.0
6.3
6.3
6.3
7.0
7.0
6.7

7

Arcadia (J-1936)

5.3
5.7
5.3
6.7
6.0
6.3
7.0
6.0
7.3
7.0
6.6

8

Blacksburg

5.0
6.0
5.3
7.0
6.0
6.3
6.7
6.3
7.3
7.0
6.6

9

J-1576

6.0
5.7
5.3
6.0
6.0
6.0
6.7
6.0
7.7
7.3
6.6

10

Midnight

5.3
6.7
5.0
6.3
6.0
6.3
7.0
6.3
7.0
7.0
6.6

11

Quantum Leap (J-1567)

5.7
5.0
5.0
7.0
5.3
6.7
6.3
6.7
7.3
7.0
6.6

12

ZPS-2183

5.0
6.7
4.7
8.0
6.3
7.0
6.0
6.7
6.7
7.0
6.6

13

BAR VB 3115B

4.0
6.0
4.3
6.0
5.7
6.7
6.3
6.7
6.7
7.0
6.5

14

Baron

5.0
6.0
5.0
6.0
5.3
6.7
6.3
6.7
7.0
7.0
6.5

15

Bartitia

4.0
5.0
4.7
7.0
5.3
6.7
6.7
6.3
7.0
7.0
6.5

16

Caliber

4.3
6.7
5.7
5.3
6.3
6.3
6.3
6.7
6.7
6.7
6.5

17

Coventry

5.0
7.7
4.3
5.3
6.0
6.3
5.3
6.3
7.7
7.3
6.5

18

BA 81-058

5.0
7.0
5.3
5.3
5.3
6.0
6.3
6.3
7.3
7.3
6.4

19

BA 81-270

4.0
7.3
4.0
5.7
6.0
6.0
5.7
6.3
7.3
7.0
6.4

20

BAR VB 233

4.3
6.0
5.3
6.3
6.3
7.0
6.3
5.7
6.3
7.0
6.4

21

Challenger

5.0
6.3
5.0
6.7
5.3
6.3
6.7
6.3
6.7
7.0
6.4

22

Explorer (Pick-3561)

5.0
5.7
4.7
5.7
5.7
6.3
6.0
6.7
7.0
7.0
6.4

23

PST-BO-141

4.7
6.7
5.3
5.7
6.7
7.0
5.3
6.0
6.7
6.7
6.4

24

Total Eclipse (Tcr-1738)

5.7
5.3
5.0
6.7
5.3
6.3
6.7
6.0
7.0
7.0
6.4

25

Limousine

4.0
4.3
5.3
6.7
4.7
6.7
7.0
5.3
7.0
7.0
6.3

26

NJ-54

4.7
7.0
5.0
5.3
5.7
5.7
6.7
6.7
6.3
7.0
6.3

27

Pick 8

5.0
6.0
5.0
6.7
6.0
6.0
5.7
6.3
7.0
6.7
6.3

28

Platini

4.7
6.0
5.0
6.0
5.3
6.3
6.7
6.3
6.7
6.7
6.3

29

PST-BO-165

4.0
7.3
4.3
4.7
6.3
5.3
6.0
6.0
7.0
7.0
6.3

30

Seabring (BA 79-260)

5.7
6.0
5.3
5.7
5.7
6.0
6.0
6.0
6.7
7.3
6.3

33

Sodnet

5.7
6.0
5.7
5.7
5.3
6.3
6.0
6.0
7.0
7.0
6.3

32

SRX 2205

4.7
5.3
5.3
7.3
5.0
6.0
6.3
6.7
7.0
6.7
6.3

33

A88-744

5.7
6.7
4.3
5.3
6.3
6.0
6.0
6.0
6.3
6.7
6.2

34

America

4.0
7.0
6.0
5.3
6.3
6.0
5.7
6.3
6.3
6.3
6.2

35

BA 73-373

4.7
5.7
4.3
5.3
5.7
6.0
6.0
6.7
6.3
6.3
6.2

36

BAR VB 6820

4.7
4.3
5.7
7.7
4.3
6.7
6.0
6.0
7.0
7.0
6.2

37

H86-690

6.0
6.3
4.7
5.0
5.7
5.7
6.3
6.3
6.3
6.7
6.2

38

LKB-95

4.0
5.7
5.3
6.0
5.7
6.0
6.3
6.0
6.7
6.7
6.2

39

NJ-GD

5.3
7.0
5.0
4.3
5.0
5.3
5.7
6.7
7.0
7.3
6.2

40

PST-A7-245A

4.0
6.7
4.7
5.7
6.0
5.7
5.7
6.7
6.7
6.7
6.2

41

Shamrock

5.3
7.0
5.0
5.3
6.0
6.0
5.7
6.0
6.7
7.0
6.2

42

Wildwood

5.3
5.3
6.0
7.3
5.7
6.0
6.0
6.0
6.7
6.7
6.2

43

ZPS-309

5.0
5.3
5.0
7.0
5.3
6.7
6.0
6.0
6.3
7.0
6.2

44

Abbey

4.3
5.7
4.7
5.3
5.3
6.0
6.0
6.0
6.7
6.7
6.1

45

BA 81-113

5.3
5.0
5.3
4.3
5.3
5.3
6.0
6.3
6.3
7.0
6.1

46

BAR VB 5649

5.0
6.0
4.3
6.0
6.0
5.7
6.0
6.3
6.3
6.3
6.1

47

Bluechip (MED-1991)

4.3
5.7
5.7
6.3
5.7
6.3
6.0
5.7
6.3
6.3
6.1

48

Cardiff

5.0
5.7
5.7
6.3
5.3
6.0
6.0
6.0
6.7
6.7
6.1

49

Goldrush (BA 87-102)

5.0
4.3
5.3
5.3
5.3
6.3
6.3
5.7
6.3
6.3
6.1

50

Jefferson

4.7
5.7
5.0
4.0
6.0
5.3
6.0
6.0
6.7
6.7
6.1

51

Livingston

4.7
6.0
4.7
5.0
5.7
5.7
6.0
5.7
6.7
7.0
6.1

52

MED-1580

4.7
6.0
5.0
6.7
5.3
6.3
6.3
6.0
6.3
6.3
6.1

53

Nimbus

4.0
5.3
5.0
6.3
6.0
6.0
5.7
6.0
6.3
6.3
6.1

54

Nuglade

5.7
6.3
5.0
6.7
4.7
6.3
6.3
5.7
6.7
6.7
6.1

55

Nustar

4.3
5.7
5.3
6.3
6.0
5.7
6.0
6.0
6.3
6.7
6.1

56

Raven

4.7
5.3
5.0
6.0
5.3
6.0
6.3
6.0
6.3
6.3
6.1

57

SR 2000

5.7
6.7
4.7
6.3
5.7
5.7
5.7
6.0
6.7
6.7
6.1

58

Blackstone (PST-638)

6.0
6.3
5.0
7.0
5.0
6.0
6.0
6.0
6.3
6.7
6.0

59

Chicago (J-2582)

5.0
6.0
5.3
5.3
5.0
5.3
6.0
6.0
7.0
6.7
6.0

60

Classic

5.0
6.0
5.0
4.0
5.3
5.7
5.3
5.7
7.0
7.0
6.0

61

Haga

4.0
7.0
5.3
4.7
6.3
6.0
5.3
5.3
6.3
6.7
6.0

62

Odyssey (J-1561)

6.0
5.7
5.0
6.0
4.7
5.3
6.3
6.0
6.7
7.0
6.0

63

Ascot

5.3
5.0
5.0
7.0
4.7
6.0
6.3
5.3
6.3
6.7
5.9

64

BA 75-490

5.0
6.0
5.0
4.3
5.0
5.0
5.7
6.3
6.7
7.0
5.9

65

Baronie

4.0
7.3
5.7
3.7
6.0
5.7
5.0
5.7
6.7
6.7
5.9

66

Marquis

5.0
6.0
4.7
5.3
5.3
6.0
6.0
5.7
6.3
6.3
5.9

67

PST-B3-180

4.3
6.7
5.0
5.3
5.7
6.0
5.7
6.0
6.0
6.0
5.9

68

Rambo (J-2579)

4.0
5.7
5.3
6.3
5.0
6.7
5.7
6.0
6.0
6.3
5.9

69

BA 81-220

4.7
4.7
4.7
5.7
5.3
5.0
6.0
5.7
6.3
6.3
5.8

70

BA 81-227

4.3
6.3
4.3
6.0
5.3
5.3
5.3
5.7
6.7
6.7
5.8

71

Glade

5.0
5.7
5.7
6.0
5.0
5.3
6.0
5.7
6.3
6.3
5.8

72

HV 130

4.0
4.7
5.0
5.7
5.0
5.0
6.0
6.3
6.3
6.3
5.8

73

Kenblue

4.0
5.0
5.3
4.0
5.3
5.0
6.0
6.0
6.0
6.3
5.8

74

Princeton 105

5.7
6.0
5.7
6.7
5.3
6.0
5.0
5.3
6.7
6.7
5.8

75

PST-A7-60

5.3
4.0
6.7
7.3
4.3
5.0
6.0
6.3
6.3
6.7
5.8

76

Allure

4.7
6.7
4.0
6.0
5.7
5.7
5.0
5.0
6.3
6.7
5.7

77

Conni

3.7
5.0
4.7
6.3
5.3
6.0
6.0
5.3
5.7
6.0
5.7

78

Eclipse

5.3
5.7
5.0
5.0
5.0
5.7
5.3
5.7
6.3
6.3
5.7

79

SR 2100

5.0
6.0
4.7
5.3
5.7
5.3
5.3
5.3
6.0
6.3
5.7

80

BA 70-060

5.0
5.3
4.7
6.0
5.3
5.7
5.3
5.3
6.0
6.0
5.6

81

BA 76-197

3.7
5.3
4.3
3.3
4.7
4.7
5.7
5.7
6.3
6.3
5.6

82

Chateau

4.3
6.7
3.7
5.7
5.3
5.0
5.0
5.7
6.3
6.3
5.6

83

J-1555

5.0
6.3

5.3

5.7

5.0

5.0

5.7

5.7

6.0

6.3

5.6

84

Misty (BA 76-372)

4.3

5.7

5.0

6.0

4.3

5.3

5.7

5.7

6.3

6.3

5.6

85

Rugby II (MED-18)

5.0

6.0

4.7

6.7

5.0

5.3

6.0

5.7

6.0

5.7

5.6

86

Sidekick

4.3

7.0

4.7

4.7

5.0

5.7

5.0

5.7

6.0

6.0

5.6

87

VB 16015

6.3

5.3

5.3

6.7

4.3

5.3

5.3

5.0

6.7

6.7

5.6

88

BA 77-702

4.3

5.7

4.7

6.0

4.7

5.7

5.7

5.0

6.0

6.0

5.5

89

Dragon (ZPS-429)

5.0

6.7

5.0

5.7

5.0

5.3

5.3

5.0

6.0

6.3

5.5

90

Pick 855

4.7

5.7

4.7

5.3

4.7

5.3

5.0

5.7

6.0

6.3

5.5

91

PST-P46

5.7

5.0

5.7

6.3

4.7

5.3

5.3

5.7

6.0

6.0

5.5

92

SR 2109

4.7

5.7

5.3

6.7

4.0

5.3

5.7

5.7

6.0

6.3

5.5

93

BA 75-163

5.7

6.7

5.0

5.0

4.7

4.7

5.3

5.0

6.3

6.3

5.4

94

Fortuna

5.0

5.0

5.0

6.3

4.3

5.7

5.7

5.3

5.7

6.0

5.4

95

HV 242

4.3

5.0

5.3

6.0

5.0

5.3

5.7

4.7

6.0

6.0

5.4

96

Lipoa

5.7

5.0

6.3

6.0

4.0

5.3

5.7

5.7

6.0

6.0

5.

97

Pepaya (DP 37-192)

4.7

4.0

5.0

6.3

4.0

5.3

5.7

6.0

5.7

5.7

5.4

98

BA 75-173

5.0

5.3

4.3

4.0

4.7

4.3

5.3

5.0

6.0

6.0

5.2

99

Baruzo

5.7

5.0

5.7

4.7

4.7

5.0

4.7

4.7

6.0

6.3

5.2

100

Moonlight (PST-A418)

6.0

7.0

4.0

6.3

4.0

5.3

5.3

5.0

5.7

6.0

5.2

101

Champagne (LTP-621)

5.3

6.3

5.0

5.0

5.0

4.7

4.7

4.7

5.7

5.7

5.1

102

LTP-620

5.0

6.7

5.0

5.7

4.0

5.3

5.0

4.7

5.7

5.7

5.1

103

Compact

4.0

5.3

5.7

4.0

4.3

5.0

5.0

5.0

5.0

5.3

4.9

 

LSD(0.05)

1.0

1.7

1.5

1.5

2.3

2.0

1.8

2.8

2.7

2.6

1.6

Gcol (Genetic color): 9 = dark green and 1 = light green. Leaf (Leaf texture): 9 = fine and 1 = coarse.

Grn (Greenup): 9 = best and 1 = poorest greenup.

Quality based on a 9 to 1 scale: 9 = best quality, 6 = lowest acceptable quality, and 1 = poorest quality.

 

 

Page 1 Page 2

Iowa State University ISU Horticulture:Publications:1998 Turfgrass Report College of Agriculture