Kentucky bluegrass
A variety of Kentucky bluegrass having a good level of disease resistance, excellent turf performance and excellent seed yield.
Latest The O.M. Scott & Sons Company Patents:
Kentucky bluegrasses have been disclosed in U.S. Plant Pat. No. 3,156 which issued on May 9, 1972; U.S. Plant Pat. No. 3,186 which issued on May 23, 1972 and U.S. Plant Pat. No. 4,336 which issued on Nov. 28, 1978.
SUMMARY OF THE VARIETYThe present invention relates to a new and distinct variety of Poa pratensis which has been designated Ba 61-91 Kentucky bluegrass.
Ba 61-91 plant material originated as one of several spaced plants at Marysville, Ohio and seed of Ba 61-91 was produced first at Marysville, Ohio, then Salem and Gervais, Oreg. This seed was used to plant turf for performance evaluation trials.
Ba 61-91 Kentucky bluegrass reproduces asexually both apomictically and vegetatively; i.e., by tillers and rhizomes. All asexually reproduced Ba 61-91 offspring appear to show complete conformity with the mother plant.
Ba 61-91 has a number of highly desirable characteristics including a good level of resistance to Helminthosporium spp., Ustilago striiformis, Fusarium roseum, Sclerotinia homoeocarpa, Puccinia graminis, Corticium spp., Rhizoctonia spp., and Pythium spp. It has a desirable dark green color and produces a good, dense turf that persists over a wide range of environmental conditions.
BRIEF DESCRIPTION OF THE DRAWINGFIG. 1 is a photograph of Ba 61-91 Kentucky bluegrass plant after anthesis at Gervais, Oreg.
FIG. 2 is a photograph of Ba 61-91 Kentucky bluegrass plant in the vegetative stage including the extensive root and rhizome system;
FIG. 3 is a photograph of Ba 61-91 Kentucky bluegrass panicle; and
FIG. 4 is a photograph of Ba 61-91 Kentucky bluegrass seed.
DETAILED DESCRIPTION OF THE VARIETYThe morphological characteristics of Ba 61-91 and other commercially available bluegrass varieties are compared in Table 1.
TABLE 1
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Morphological comparison of Ba 61-91 and other
bluegrass varieties at Gervals, Oregon
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Floret Spikelet
Length Length Glume Length (mm)
Mature Plant
Variety
(mm) (mm) Glume 1
Glume 2
Height (cm)
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Ba 61-91
3.95 5.52 2.87 3.13 46.5
Baron 3.17 4.16 2.55 2.90 60.7
Merion 2.72 4.56 2.51 2.76 62.7
Merit 3.43 4.73 2.67 3.02 72.0
Newport
3.46 5.42 3.21 3.60 73.8
Victa 3.30 4.48 2.72 3.05 64.0
LSD(.05)
0.35 0.17 0.11 0.10 7.9
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Panicle
Peduncle Flagleaf
No. of Whorls
Length Length Length
Width
Variety per Panicle (cm) (cm) (cm) (mm)
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Ba 61-91
10.0 6.9 35.8 3.4 3.6
Baron 11.3 8.4 32.7 5.3 3.5
Merion 11.3 9.6 40.4 6.5 4.7
Merit 11.0 5.8 38.1 6.0 3.8
Newport 13.0 10.3 37.9 6.3 4.3
Victa 13.0 8.9 40.4 6.7 4.9
LSD(.05)
1.3 3.6 7.3 2.3 0.9
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No. of Branches
Lowest Third No. of Florets
Variety
Whorl Whorl per Spikelet
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Ba 61-91
4.5 3.0 4.3
Baron 5.0 4.3 2.8
Merion 3.7 2.7 4.7
Merit 6.0 4.0 3.2
Newport
4.3 4.0 4.6
Victa 4.7 4.7 3.0
LSD(.05)
0.7 1.2 0.7
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As shown by the foregoing table, the morphological characteristics of Ba 61-91 afford a basis for distinguishing it from other varieties of Poa pratensis such as those listed in the table.
Mowed plots of Ba 61-91 have been evaluated under turf conditions in many different tests and at numerous locations. Turfgrass performance information presented indicates the distinctiveness of Ba 61-91 compared to other bluegrass varieties and its desirable characteristics which enable it to provide good performance as described below.
Disease resistance is a highly significant and desirable characteristic that is necessary to the maintenance of good quality turf. Ba 61-91 Kentucky bluegrass has been demonstrated to provide good resistance to many major types of turf diseases in varied geographical locations.
Comparisons of Ba 61-91 and other bluegrasses for resistance to red thread (Corticium spp.), Pythium blight (Pythium spp.), Fusarium blight (Fusarium roseum) which is also known as Fusarium patch, leaf spot (Helminthesporium spp) which is also known as melting out, and dollar spot (Sclerotinia homoeocarpia) diseases are presented in Table 2.
TABLE 2
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Disease ratings of BA 61-91 and other bluegrass varieties.
______________________________________
1983.
Disease
Ratings*
Pythium Fusarium
Red Thread blight blight
Variety Blacksburg, VA
Urbana, IL Stillwater, OK
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Ba 61-91 6.7 9.0 8.3
A-34 5.7 6.3 7.7
Adelphi 6.0 8.3 8.3
America 6.7 6.3 9.0
Baron 6.3 9.0 8.8
Birka 6.0 5.7 8.7
Cheri 5.7 7.7 9.0
Eclipse 7.7 9.0 9.0
Enmundi 6.0 7.7 8.0
Fylking 6.0 8.3 7.7
Glade 5.3 5.7 8.7
Kenblue 4.0 3.7 8.7
Merion 6.0 9.0 8.7
Merit 7.3 9.0 8.3
Nassau 6.7 8.0 8.3
Parade 6.3 8.7 8.3
Ram I 6.7 6.3 8.5
S.D. Common
4.3 4.3 9.0
Sydsport 5.7 7.0 7.7
LSD (.05) 1.5 1.6 1.7
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Disease
Ratings* Dollar
Fusarium Melting Out
Spot 3
patch
Spring Loca-
Variety Moscow, ID 3 Locations**
cations***
Mean
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Ba 61-91 8.0 6.4 6.8 7.53
A-34 5.7 4.8 6.9 6.18
Adelphi 8.3 6.3 7.1 7.38
America 6.0 5.4 6.8 6.70
Baron 5.3 6.3 6.7 7.07
Birka 5.3 6.3 6.6 6.43
Cheri 6.0 5.8 5.9 6.68
Eclipse 6.3 7.2 7.7 7.82
Enmundi 5.3 5.8 7.1 6.65
Fylking 6.7 6.0 7.1 6.97
Glade 8.7 5.9 6.9 6.87
Kenblue 5.3 2.8 7.2 5.28
Merion 7.7 6.4 6.9 7.45
Merit 7.3 6.4 6.1 7.40
Massau 6.7 7.3 6.8 7.30
Parade 7.0 5.4 7.0 7.12
Ram I 7.0 5.5 6.6 6.77
S.D. Common
7.0 2.9 7.6 5.85
Sydsport 3.0 6.0 5.7 5.85
LSD (.05) 3.2 0.8 1.0
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*Rating Scale: 1-9, 9 = no disease
**North Brunswick, NJ; Beltsville, MD; Blacksburg, VA
***Newark, DE (irrigated and not irrigated); Urbana, IL
With continued reference to the disease resistance of Ba 61-91, Table 3 provides further comparative data for Ba 61-91 and other bluegrasses showing the high level of resistance of Ba 61-91 to leaf spot diseases based on information collected at various locations in the United States and at different times of the year.
TABLE 3
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Comparison of Helminthosporium leafspot resistance of
Ba 61-91 and other bluegrass varieties.
Leafspot Ratings*
Spring Summer Fall Mean
Variety l3** 6** 2** 21**
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Ba 61-91 6.9 a-d 7.1 a-e 8.3 a 7.0 a-d
Baron 6.6 a-g 6.7 1-g 8.3 s 6.7 a-g
Cheri 6.7 a-e 6.8 a-f 8.7 a 6.8 a-f
Fylking 6.8 a-e 6.4 a-h 8.6 a 6.9 a-d
Glade 6.4 a-g 6.8 a-f 8.6 6.5 a-g
Kenblue 5.3 h 6.2 a-h 8.3 a 5.4 h
Merion 6.9 a-e 6.8 a-f 8.1 a 6.9 a-d
Merit 6.6 a-g 6.4 a-h 8.6 a 6.6 a-g
Parade 6.8 a-e 7.7 a 8.8 a 7.0 a-d
Park 5.5 g-h 6.4 a-h 8.4 a 5.5 h
Rugby 6.6 a-g 7.2 a-e 8.7 6.7 a-g
Touchdown 6.9 a-e 5.8 e-i 8.6 a 6.8 a-f
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Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (probability = 0.05).
Locations reporting leafspot resistance: Mt. Carmel, CT; Beltsville, MD;
Fairland, MD; and Blacksburg, VA.
*Ratings Scale: 1-9, 9 = no injury
**Number of readings
Comparisons of Ba 61-91 and other bluegrasses for resistance to stripe smut caused by the fungus Ustilago striiformis, Fusarium blight caused by the fungus Fusarium roseum, stem rust caused by the fungus Puccinia graminis, red thread caused by the fungus Corticium spp. and brown batch caused by the fungus Rhizoctonia spp. are presented in tables 4, 5, 6, 7 and 8, respectively.
TABLE 4
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Comparison of stripe smut resistance of Ba 61-91
and other bluegrass varieties.
Stripe Smut Ratings*
Variety New Brunswick, NJ
Fairland, MD Mean
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Ba 61-91 8.3 6.3 7.3 a-h
Adelphi 8.7 8.3 8.5 a-b
Baron 6.0 5.3 5.7 h-j
Fylking 7.7 6.0 6.8 b-i
Glade 9.0 9.0 9.0 a
Kenblue 8.0 9.0 8.5 a-b
Merion 2.7 3.0 2.8 m
Parade 6.3 6.0 6.2 f-i
Park 8.7 9.0 8.8 a
Rugby 5.7 5.0 5.3 i-k
Windsor 3.0 6.0 4.5 j-l
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Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (probability = 0.05).
*Rating Scale: 1-9, 9 = no injury
TABLE 5
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Comparison of fusarium blight resistance of Ba 61-91
and other bluegrass varieties.
Fusarium Blight
Ratings*
Mt. New Wye Belts-
Carmel, Brunswick,
Mills, ville,
Variety CT NJ MD MD Mean
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Ba 61-91
6.7 4.3 7.7 7.0 6.5 a-i
Adelphi 8.0 9.0 6.3 8.5 8.1 a
Baron 7.0 6.0 7.3 5.7 6.3 a-i
Delft 7.3 3.7 4.0 7.5 6.0 d-j
Fylking 8.7 3.7 4.0 7.2 6.3 a-j
Geronimo
7.0 3.7 4.3 7.2 5.9 e-j
Glade 6.3 7.0 4.3 6.0 5.9 f-j
Merion 7.0 6.0 5.7 8.2 7.0 a-i
Nugget 6.3 5.0 3.5 6.2 5.8 f-j
Sydsport
6.5 8.3 4.0 8.0 6.5 a-i
Touchdown
7.0 7.0 6.0 5.5 6.0 d-j
Vantage -- 7.3 8.3 8.5 8.0 a-b
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Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (probability = 0.05).
*Rating Scale: 1-9, 9 = no injury
TABLE 6
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Comparison of stem rust resistance of Ba 61-91 and other
bluegrass varieties at Adelphia, New Jersey.
Variety Stem Rust Ratings*
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Ba 61-91 7.1 5.2
Adelphi 6.9 7.1
America 6.9 7.4
Baron 7.0 6.4
Birka 5.6 3.5
Bonnieblue 7.0 5.4
Bristol 7.7 7.7
Eclipse 7.0 4.7
Merion 3.6 2.4
Merit 7.0 5.7
Nassau 7.0 6.8
Ram I 7.3 7.0
Touchdown 5.7 3.5
Vantage 5.9 6.2
LSD 5% 1.0 0.9
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*Rating Scale: 9 = no disease, 0 = turf killed
TABLE 7
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Comparison of red thread resistance of Ba 61-91 and other
bluegrass varieties at Newport News, Virginia.
Variety Red Thread Ratings*
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Ba 61-91 5.7 a-f
Adelphi 7.3 a
Baron 3.7 e-i
Bonnieblue 6.3 a-d
Cheri 5.0 a-g
Glade 3.3 f-i
Kenblue 2.7 h-i
Nugget 4.0 d-i
Park 4.0 d-i
Sydsport 5.0 a-g
Touchdown 5.7 a-f
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Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (probability = 0.05).
*Rating Scale: 1-9, 9 = no injury
TABLE 8
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Comparison of rhizoctonia brown patch resistance of Ba 61-91 and
other bluegrass varieties at West Lafayette, Indiana.
Variety Brown Patch Ratings**
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Ba 61-91 9.2
Adelphi 8.2
America 6.0
Baron 6.8
Birka 7.2
Bristol 6.2
Cheri 7.3
Columbia 7.8
Enmundi 8.0
Fylking 3.2
Kenblue 8.8
Merion 9.2
Merit 9.0
Parade 7.5
Scenic 8.2
Sydsport 3.7
Vantage 8.0
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*Rating Scale: 1-10, 10 = no damage
Drought tolerance is a characteristic that allows the plant to perform well and survive long periods of stress under hot, dry conditions. Ba 61-91 has demonstrated good levels of drought tolerance at various locations in the United States as will be seen from the tabulated comparative test results in Table 9.
TABLE 9
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Comparison of drought tolerance of
Ba 61-91 and other bluegrass varieties.
Drought Tolerance Ratings*
Belts- Wye
ville, Mills, Burlingham,
Blacksburg,
Variety
MD MD VT Va Mean
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Ba 61-91
4.3 6.0 5.5 3.7 4.8 a-c
Adelphi
5.0 5.0 5.7 3.5 4.7 a-e
Baron 5.7 5.7 4.2 3.5 4.4 a-j
Cheri 3.7 4.7 5.5 3.7 4.4 a-j
Fylking
4.3 2.0 4.0 2.8 3.3 j-o
Glade 4.0 3.3 3.8 3.2 3.6 f-o
Merion 4.3 6.0 6.3 4.2 5.2 a
Nugget 3.3 2.7 3.3 3.5 3.3 k-o
Parade 4.0 4.7 3.5 3.0 3.6 f-o
Park 3.0 3.7 2.8 4.3 3.5 g-o
Sydsport
4.3 4.3 5.2 3.5 4.3 a-k
Vantage
5.7 6.7 5.7 3.8 5.2 a
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Means followed by the same letter are no significantly different accordin
to Duncan's Multiple Range Test (p = 0.05).
*Rating Scale: 1-9, 9 = no injury
The color of Ba 61-91 turf is a desirable dark green color and is shown in comparison to other varieties in Table 10.
TABLE 10
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Comparison of turf color of Ba 61-91 and other bluegrass
______________________________________
varieties.
Turf Color Ratings*
Fayetteville,
Flagstaff,
Variety Fayetteville, AR (1)
AR (2) AZ
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Ba 61-91
6.7 8.0 --
A-34 4.7 5.0 5.3
Adelphi 6.0 6.3 6.0
Baron 7.0 8.0 6.3
Birka 6.0 7.0 5.7
Cheri 6.3 7.7 7.3
Eclipse 6.0 6.7 --
Enmundi 7.7 7.7 6.7
Fylking 6.3 6.7 5.3
Glade 7.7 7.7 6.3
Kenblue 4.7 4.3 5.7
Merion 4.7 4.0 6.7
Merit 7.0 7.3 6.7
Parade 4.3 4.0 5.3
Sydsport
6.3 7.3 6.7
LSD (.05)
1.4 1.4 1.5
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Turf Color Ratings*
Agassiz,
Variety British Columbia
Moscow, ID Fairland, MD
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Ba 61-91
6.5 6.0 8.7
A-34 6.0 5.0 8.3
Adelphi 6.3 6.0 8.3
Baron 6.3 5.7 8.0
Birka 6.0 5.0 8.0
Cheri 6.0 5.7 8.0
Eclipse 6.3 5.7 8.3
Enmundi 6.3 6.0 8.0
Fylking 6.3 4.7 8.0
Glade 7.0 6.3 8.7
Kenblue 6.0 3.7 8.0
Merion 5.7 5.0 8.0
Merit 6.7 6.7 8.0
Parade 6.0 5.3 8.0
Sydsport
5.7 5.7 8.3
LSD (.05)
0.8 1.2 0.6
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Turf Color Ratings*
Variety
Pullman, WA
Mean
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Ba 61-91
8.0 7.4
A-34 8.0 6.0
Adelphi
8.0 6.7
Baron 8.3 7.1
Birka 7.7 6.5
Cheri 8.7 7.1
Eclipse
8.3 6.9
Enmundi
8.0 7.2
Fylking
7.3 6.4
Glade 7.3 7.3
Kenblue
7.7 5.7
Merion 8.0 6.0
Merit 8.3 7.2
Parade 7.3 5.8
Sydsport
8.0 6.9
LSD (.05)
0.8 0.4
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*Rating Scale: 19, 9 = dark green
(1) High fertility test
(2) Low fertility test
The various turfgrass characteristics described above are all taken into account in determining a turf quality rating. Great significance is attached to this rating because it is indicative of the general appearance, uniformity, and aesthetic value of a turf. Also, as all of the performance characteristics of the grass are taken into consideration, a good turf quality rating is an indication that the grass is free of disease and has good color, density and an acceptable texture. The turf quality ratings of Ba 61-91 from various times and locations in the United States are shown in Tables 11, 12 and 13 in comparison to several other varieties. Ba 61-91 produces a high quality turf at numerous locations in the United States. This, along with its high resistance to the major turf diseases as noted above, demonstrates the broad genetic adaptability of this grass.
TABLE 11
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Turf quality of Ba 61-91 and other bluegrass varieties.
______________________________________
Turf Quality
Ratings*
Missis- North
Experi- sippi Bruns-
Agassiz,
ment, state, Mead, wick,
Variety B.C. GA MS NE NJ
______________________________________
Ba 61-91 5.9 5.2 4.9 5.8 6.5
Adelphi 5.5 4.2 3.9 5.5 6.2
Baron 5.8 4.7 4.5 5.5 6.1
Birka 6.0 4.9 4.4 5.7 5.6
Cheri 5.7 4.4 4.7 5.3 5.7
Eclipse 5.6 5.1 4.6 5.2 7.4
Fylking 4.7 3.2 4.7 5.3 5.9
Glade 5.8 4.9 3.9 5.7 6.7
Kenblue 3.8 4.1 4.8 3.3 3.6
Merion 5.7 4.0 4.9 4.7 5.9
Merit 6.1 4.7 4.6 5.7 6.6
Parade 5.3 4.8 4.9 5.2 5.5
Ram I 5.5 3.3 4.4 5.3 6.1
S.D. Common
2.7 3.7 5.1 3.5 3.0
Sydsport 6.0 4.7 4.8 5.3 5.5
Touchdown 5.1 4.3 4.8 4.7 6.5
Vantage 4.4 1.0 4.3 5.0 3.5
LSD (.05) 0.6 1.3 0.9 0.8 0.9
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Turf Quality
Rating*
King- Belts- Blacks-
Black-
Black-
ston, ville, burg, stone,
burg,
Variety RI MD VA VA VA
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Ba 61-91 5.9 6.6 5.2 5.5 5.6
Adelphi 5.2 5.9 5.3 4.9 5.5
Baron 4.9 5.3 4.9 5.3 5.1
Birka 5.4 5.2 4.3 4.6 5.3
Cheri 5.2 5.1 5.1 5.1 5.0
Eclipse 5.8 5.9 5.8 6.2 5.1
Fylking 4.6 4.9 4.0 4.7 4.4
Glade 5.1 5.3 4.8 4.6 4.8
Kenblue 4.2 4.9 3.9 4.2 3.8
Merion 5.7 5.3 5.0 4.3 4.3
Merit 5.3 6.1 5.2 5.1 5.6
Parade 5.4 5.0 4.6 4.4 4.7
Ram I 5.3 4.6 4.4 4.8 4.4
S.D. Common
4.6 5.0 4.1 4.2 3.7
Sydsport 5.8 5.8 4.7 5.3 4.8
Touchdown 4.9 5.8 4.5 4.8 4.3
Vantage 5.1 5.5 4.6 3.8 4.5
LSD (.05) 0.9 0.8 0.7 0.8 0.9
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*Rating Scale: 19,9 = ideal turf
TABLE 12
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Mean turfgrass quality at thirty-two locations in National Bluegrass
Evaluation Test of Ba 61-91 and other bluegrass varieties.
Variety Mean Turfgrass Quality Ratings*
______________________________________
Ba 61-91 5.3
Adelphi 5.2
America 5.1
Baron 5.2
Birka 5.2
Cheri 5.2
Fylking 4.9
Glade 5.3
Kenblue 4.2
Merion 5.1
Merit 5.3
Nugget 4.8
Parade 5.1
Ram I 5.2
S.D. Common 4.2
Sydsport 5.2
Touchdown 5.1
Vantage 4.6
Wabash 4.9
LSD (.05) .16
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*Rating Scale: 19, 9 = ideal turf
TABLE 13
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Mean turf quality of Ba 61-91 and other bluegrass varieties.
______________________________________
Mean Turf Quality Ratings*
New
Mt. Bruns- Kings-
Fair- Wye Burling-
Carmel, wick, ton, land, Mills,
ham,
Variety
CT NJ RI MD MD VI
______________________________________
Ba 61-91
5.4 5.6 6.5 6.1 6.4 7.6
Adelphi
5.5 6.6 6.6 6.8 6.2 7.3
Baron 5.5 5.4 6.6 6.1 6.1 7.3
Bonnie-
5.4 6.6 6.0 6.1 3.8 7.2
blue
Fylking
5.7 5.5 6.4 6.2 3.6 7.0
Glade 5.8 6.6 6.2 6.1 5.1 7.0
Kenblue
5.7 3.2 5.0 5.5 5.3 6.1
Merion 5.3 5.8 6.6 5.8 5.6 8.0
Parade 5.7 6.4 6.5 6.5 6.3 6.9
Park 5.8 2.9 5.3 5.4 4.9 5.5
Vantage
5.7 5.6 6.1 6.5 6.2 7.3
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Mean Turf Quality Ratings*
Blacks- Newport
Belts-
Belts-
Ithaca, burg, News, ville,
ville,
Variety NY VA VA MD(1) MD(2) Mean
______________________________________
Ba 61-91
6.7 5.6 4.1 6.7 6.0
Adelphi 6.3 5.9 5.4 6.8 6.3 6.5 a-c
Baron 6.4 5.3 5.1 6.0 6.4 6.1 g-r
Bonnieblue
6.2 5.6 5.6 6.4 6.0 5.9 k-p
Fylking 6.6 4.9 4.4 6.4 5.4 5.8 n-o
Glade 6.4 5.3 5.4 6.2 5.7 6.0 i-n
Kenblue 5.4 5.4 5.1 5.2 4.6 5.1 t-u
Merion 6.6 5.5 6.3 6.7 5.9 6.2 e-k
Parade 6.3 4.8 3.5 6.7 6.0 6.2 e-k
Park 5.4 5.0 4.9 5.2 4.8 5.1 t-u
Vantage 7.1 5.5 5.9 6.4 5.9 6.2 f-i
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*Rating Scale: 1-9, 9 = ideal turf
Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (p = 0.05).
(1) Moderate maintenance
(2) Low maintenance
Two additional characteristics of Ba 61-91 make this grass economically signficant. Table 14 indicates the high sod strength of Ba 61-91 in comparison to other varieties of bluegrass. High sod strength is required in the cutting, removal and installation of sod to increase the efficiency of these operations. Table 15 indicates the high seed yield capacity of Ba 61-91 in comparison to Victa and Merit which are known to be high seed yielding varieties, and to Vantage and Windsor which are known to have significantly lower seed yielding capacity. High seed yielding capacity is required for economical seed production. Table 15 also indicates heading and anthesis dates of Ba 61-91 in comparison to other varieties. These two characteristics, in addition to the morphological characteristics noted in Table 1 and seed size and count per pound in Table 16, afford further bases for distinguishing Ba 61-91 from other varieties of Kentucky bluegrass.
TABLE 14
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Sod strength of Ba 61-91 and other bluegrass varieties at
Blacksburg, Virginia.
Variety Sod Strength Ratings*
______________________________________
Ba 61-91 5.3 a-h
Adelphi 3.7 c-j
Baron 3.7 c-j
Enmundi 5.3 a-h
Glade 5.0 a-i
Kenblue 1.3 i-j
Merion 1.7 h-j
Parade 4.0 b-j
Park 1.0 j
Sodco 3.3 d-j
Sydsport 4.0 b-j
Vantage 1.7 h-j
______________________________________
Means followed by the same letter are not significantly different
according to Duncan's Multiple Range Test (probability = 0.05).
*Rating Scale: 9 = maximum sod strength
TABLE 15
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Heading and anthesis date, seed yield per plant, and bushel weight
of Ba 61-91 and other bluegrass varieties at Salem, Oregon.
______________________________________
Heading Date Anthesis Date
1% 50% 1% 50%
Year Year Year Year Year Year Year Year
Variety
1 2 1 2 1 2 1 2
______________________________________
Ba 61-91
5/1 4/30 5/6 5/8 5/28 5/22 5/31 5/23
Merit -- 5/3 -- 5/9 -- 5/21 -- 5/23
Vantage
4/12 4/21 4/22 4/24
5/17 5/19 5/24 5/20
Victa 5/3 5/8 5/6 5/12
5/24 5/21 5/27 5/23
Windsor
4/19 4/23 4/29 5/7 5/22 5/19 5/27 5/23
______________________________________
Seed Yield Bushel Wt.
per Plant (gm) (lb./bu.)
Variety Year 1 Year 2 Year 3 Year 3
______________________________________
Ba 61-91 16 38.6 42.5 25.5
Merit -- -- 61.1 25.5
Vantage 8 11.4 4.8 18.5
Victa 38 57.6 45.4 25.0
Windsor 11 5.1 2.7 27.5
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TABLE 16
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Seed length and number of seeds per pound of Ba 61-91 and other
bluegrass varieties.
Seed Length
No. Seeds
Variety (mm) per Pound
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Ba 61-91 2.85 1,075,331
Baron 2.72 1,181,474
Fylking 2.99 1,091,716
Kenblue 2.26 2,297,030
Merion 2.43 1,968,636
Newport 2.76 1,244,559
Nugget 3.31 873,942
Park 2.91 1,311,452
Sydsport 2.46 1,964,088
Vantage 2.51 1,555,848
Victa 2.95 1,053,867
Windsor 2.34 1,955,323
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Claims
1. A variety of Kentucky bluegrass plant, substantially as shown and described, characterized particularly by a high level of resistance to diseases, a desirable dark green color throughout the growing season, a high quality and persistent turf under a wide range of environmental conditions and a high seed yielding capacity.
Type: Grant
Filed: Jun 10, 1986
Date of Patent: Sep 6, 1988
Assignee: The O.M. Scott & Sons Company (Marysville, OH)
Inventors: John A. Long (Marysville, OH), Virgil D. Meier (Marysville, OH), Eugene W. Mayer (Marysville, OH)
Primary Examiner: Robert E. Bagwill
Attorney: James B. Raden
Application Number: 6/872,537
International Classification: A01H 500;
