`Ba 69-82 ` Kentucky Bluegrass
A variety of Kentucky Bluegrass having a medium to high level of resistance to leaf spot, melting out disease, several rust diseases, dollar spot, powdery mildew and stripe smut; a desirable green color throughout the growing season; the ability to form a strong sod and a high quality dense persistent turf under a wide variety of environmental conditions; and has a medium level of seed yielding capacity.
Latest OMS Investments, Inc. Patents:
1. Field of the Invention
The present invention relates to a new and distinct variety of Poa pratensis that has been designated Ba 69-82 Kentucky Bluegrass.
2. Description of Related Art
Kentucky bluegrasses have been disclosed in U.S. Plant Pat. No. 3,156 issued May 9, 1972; U.S. Plant Pat. No. 3,186 issued May 23, 1972; U.S. Plant Pat. No. 4,336, issued Nov. 28, 1978; U.S. Plant Pat. No. 6,280 issued Sep. 6, 1988; U.S. Plant Pat. Nos. 6,537 and 6,538, issued Jan. 17, 1989; U.S. Plant Pat. No. 6,585, issued Feb. 7, 1989; U.S. Plant Pat. No. 7,831, issued Mar. 17, 1992; U.S. Plant Pat. No. 8,490, issued Dec. 7, 1993; U.S. Plant Pat. No. 9,036, issued Jan. 3, 1995 and pending U.S. Plant patent application Ser. No. 08/308,699, filed Sep. 19, 1994, now U.S. Plant Pat. No. 9,209.
SUMMARY OF THE VARIETYBa 69-82 Kentucky Bluegrass plants are a distinct variety which can be produced and asexually propogated by rhizomes, tillers and disseminules. The plants originated from random seed that germinated in the O. M. Scott and Sons plant nursery and were allowed to grow in the nursery for a period of one year. The seed and pollen parents of the random seed are believed to come from a set of 88 plants collected from several locations throughout the U.S.
Seed of Ba 69-82 Kentucky Bluegrass was produced first at Marysville, Ohio and later at Gervais, Oreg. This seed was used to plant turf performance evaluation trials and later seed production fields. Asexual production of Ba 69-82 by propagules (tillers and rhizomes) and by disseminules (modified caryopses produced by apomixis) has consistently produced progeny plants indistinguishable from the mother plant. The apomixis level of Ba 69-82 is approximately 99% based upon examining seedling characteristics of approximately 100 to 150 seedlings from different crop years in a growth chamber.
Ba 69-82 has a number of highly desirable characteristics including a high level of resistance to Drechslera spp. that causes leaf spot, melting out and crown rot; Laetisaria fuciformis that causes red thread; Schlerotinia homoeocarpa that causes dollar spot; Puccinia spp. that causes several types of rust infections; Erysiphe graminis that causes powdery mildew; Leptosphaeria korrae that causes Necrotic ring spot and Ustilago striiformis that causes stripe smut. Ba 69-82 has an attractive leafy turf type growth habit, moderately wide leaf blades, attractive green color which can be maintained throughout the entire growing season, good drought and heat tolerance, and good turf performance as evidenced by consistently high scores for quality, color and density.
In comparison with most commercially available varieties, Ba 69-82 produces a small seed, has a short ligule and is late maturing. Under mowed conditions, Ba 69-82 develops a moderately wide blade and high sod strength. Ba 69-82 has a medium level of seed yield potential in the bluegrass seed producing regions of the northwestern U.S.
BRIEF DESCRIPTION OF THE DRAWINGFIG. 1 is a Ba 69-82 Kentucky Bluegrass plant at anthesis;
FIG. 2 is a Ba 69-82 Kentucky Bluegrass panicle at anthesis; and
FIG. 3 is a Ba 69-82 Kentucky Bluegrass seed.
DETAILED DESCRIPTION OF THE VARIETYBa 69-82 Kentucky bluegrass (Poa pratensis L.) is perennial with creeping rhizomes forming a dense turf. When plants overwinter in the field under freezing temperatures and are then brought into the greenhouse during late winter to continue growth undisturbed by clipping under moderate temperatures (60.degree.-80.degree. F.), culms are erect averaging 31.9 cm in length, 3.2 nodes per culm and the uppermost internode 7.2 cm in length. The peduncle averages 21.0 cm in length, and 0.595 mm in width. The vegetative leaf averages 21.9 mm in width, 0.279 mm in thickness and a ligule length of 0.14 mm. An average quantity of ligule and leaf margin hairs was observed. The flag leaf averages 4.3 cm in length, 3.2 mm in width and 0.198 mm in thickness and a ligule length of 1.0 mm. The panicle averages 67.4 mm in length, 46.6 mm in width and 8.8 whorls. The lowest whorl averages 3.3 branches and the third whorl from the bottom of the panicle 3.1 branches.
The spikelet at the tip of a branch in the lowest whorl averages 4.6 mm in length, 2.3 mm in width, 3.2 florets and 2.8 mm and 3.1 mm for the outer and inner glumes in length, respectively. A similar spikelet from the third whorl from the bottom of the panicle averages 4.7 mm in length, 2.4 mm in width, 3.3 florets and 2.9 mm and 3.2 mm for the outer and inner glumes in length, respectively. The hair content on the glumes average 2.2 and 2.2 for the outer and inner glumes on the lowest whorl, respectively, and 2.1 and 3.3 on the outer and inner glumes on the third whorl, respectively.
Ba 69-82 averaged significantly more hairs on the glumes on the third whorl than most other grasses in the study. The seed of Ba 69-82 averages 2.77 mm in length, and 0.89 mm in width, 0.68 mm in rachilla length and approximately 1,250,997 seeds per pound. The dorsal side of the lemma keel contained an average population of hairs.
Comparisons of Ba 69-82 with other Kentucky Bluegrass varieties in terms of seed dimensions and numbers per pound are shown in Tables 1 and 2 as follows:
TABLE 1
______________________________________
Morphological Comparison of Seed and Rachilla Measurements
and Lemma Hair of Ba 69-82 and Other Kentucky Bluegrass
Varieties After Conditioning.
Seed
Length Width Rachilla
Lemma.sup.1
Variety mm mm mm Hair
______________________________________
Ba 69-82 2.77 0.89 0.68 4.4
Ba 73-540 2.77 0.86 0.70 4.7
Abbey 2.97 0.89 0.80 3.8
Adelphi 2.70 0.84 0.65 4.4
America 2.40 0.68 0.68 2.8
Baron 3.08 0.81 0.71 5.0
Bristol 2.94 0.88 0.73 4.3
Chateau 2.81 0.86 0.71 4.5
Coventry 2.71 0.81 0.70 4.0
Eclipse 2.77 0.83 0.68 3.5
Georgetown 2.94 0.82 0.74 4.9
Gnome 2.78 0.83 0.75 4.1
Kelly 3.07 0.89 0.75 4.2
Marquis 2.97 0.87 0.83 4.7
Midnight 2.94 0.76 0.78 5.7
Nassau 3.07 0.86 0.68 3.4
Ram I 3.23 0.89 0.80 6.0
Touchdown 2.93 0.88 0.71 4.6
Victa 3.00 0.80 0.82 3.5
LSD (.05) 0.16 0.05 0.13 0.86
______________________________________
.sup.1 Rating Scale: 0-9; 9 = abundant row of hairs along keel.
TABLE 2
______________________________________
Comparison of Seed Numbers Per Pound of Ba 69-82 and Other
Kentucky Bluegrass Varieties After Conditioning
Variety Seeds per Pounds
______________________________________
Ba 69-82 1,250,997
Ba 73-540 1,359,914
Abbey 1,003,037
Adelphi 1,383,976
America 1,659,824
Baron 1,051,693
Bristol 1,270,821
Chateau 1,300,105
Coventry 1,246,200
Eclipse 1,335,668
Georgetown 1,431,000
Gnome 1,017,641
Kelly 921,166
Marquis 1,054,642
Midnight 1,227,000
Nassau 1,127,130
Ram 1 1,214,000
Touchdown 1,211,000
Victa 1,038,298
______________________________________
Since environmental conditions such as soil and climate may influence morphological characteristics to some extent, comparisons of morphological characteristics of Ba 69-82 were made with other Kentucky Bluegrass varieties and the comparisons are set forth in the following Tables 3-8:
TABLE 3
______________________________________
Morphological Comparison of Panicles, Whorl Number and
Whorl Branches of Ba 69-82 and Other Kentucky Bluegrass
Varieties in the Greenhouse at Marysville, OH.
Panicles Number of
Whorl Branches
Nod- Length Width Num- Lower Third
Variety ding mm mm ber Whorl Whorl
______________________________________
Ba 69-82 1.5 67.4 46.6 8.8 3.3 3.1
Ba 73-540
2.2 60.8 47.6 8.4 3.9 3.0
Abbey 1.6 80.4 59.3 9.3 3.8 3.3
Adelphi 1.8 106.8 76.4 10.0 3.6 3.0
America 2.3 67.7 51.1 8.8 3.3 3.5
Baron 2.2 92.6 71.0 10.0 3.4 2.8
Bristol 2.0 85.5 61.5 8.4 2.8 2.7
Chateau 2.9 65.2 57.3 8.5 3.3 2.8
Coventry 2.5 64.0 54.2 8.4 3.3 2.5
Eclipse 1.3 89.2 74.0 10.7 3.3 2.1
Georgetown
1.0 80.0 57.0 7.4 2.1 2.6
Gnome 1.1 80.6 56.0 10.6 4.6 3.9
Kelly 2.0 88.0 70.2 9.8 4.6 3.7
Marquis 1.1 82.0 63.0 10.3 3.9 3.6
Midnight 2.0 75.8 48.4 7.1 2.9 3.0
Nassau 2.2 91.2 68.6 10.0 2.5 2.1
Ram I 1.3 67.7 47.0 7.3 3.0 3.2
Touchdown
1.1 73.1 75.0 7.6 2.1 2.3
Victa 1.7 74.9 58.3 10.0 4.7 3.5
LSD (.05)
0.68 7.35 8.62 0.66 0.72 0.50
______________________________________
*Rating Scale: 1-9; 9 = most nodding
TABLE 4
______________________________________
Morphological Comparison of Spikelets and Florets of Ba 69-82
and Other Kentucky Bluegrass Varieties in the Greenhouse at
Marysville, OH.
Spikelet
Number of
Third Whorl
Florets
Lower Whorl Width Per Spikelet
Length Width Length
Num- Lower Third
Variety mm mm mm ber Whorl Whorl
______________________________________
Ba 69-82 4.6 2.3 2.7 2.4 3.2 3.3
Ba 73-540
4.3 2.2 4.3 2.2 3.4 3.2
Abbey 4.4 2.2 4.5 2.2 3.0 3.0
Adelphi 4.6 2.2 4.8 2.2 4.4 4.4
America 4.6 2.2 4.4 2.3 4.5 4.3
Baron 5.4 2.8 5.4 3.1 4.0 4.2
Bristol 4.9 2.4 5.0 2.5 4.2 4.5
Chateau 4.4 2.4 4.4 2.4 3.4 3.5
Coventry 4.4 2.2 4.5 2.4 3.2 3.5
Eclipse 4.6 2.4 4.6 2.4 3.6 3.6
Georgetown
5.0 2.3 5.0 2.6 4.8 4.9
Gnome 4.6 2.5 4.6 2.9 3.2 3.2
Kelly 5.1 2.5 5.2 2.8 3.7 3.8
Marquis 4.3 2.2 4.4 2.3 3.1 2.9
Midnight 5.3 2.5 5.5 2.4 4.4 4.7
Nassau 4.7 2.6 4.8 3.00 4.2 4.3
Ram I 5.4 2.6 5.3 2.8 3.6 3.4
Touchdown
5.1 2.9 4.8 2.8 4.1 4.0
Victa 4.5 2.5 4.5 2.4 3.3 3.2
LSD (.05)
0.41 0.35 0.38 0.35 0.58 0.53
______________________________________
TABLE 5
______________________________________
Morphological Comparison of Glumes of Ba 69-82 and Other
Kentucky Bluegrass Varieties in the Greenhouse
at Marysville, OH.
______________________________________
Glume Length (mm)
Outer Inner
Lowest Third Lowest
Third
Variety Whorl Whorl Whorl Whorl
______________________________________
Ba 69-82 2.8 2.9 3.1 3.2
Ba 73-540 2.6 2.7 3.0 3.0
Abbey 2.7 2.7 3.1 3.1
Adelphi 2.7 2.6 3.0 3.1
America 2.1 2.1 2.5 2.5
Baron 3.1 3.2 3..6 3.7
Bristol 2.8 3.0 3.3 3.4
Chateau 2.8 2.9 3.1 3.2
Coventry 2.7 2.8 3.1 3.1
Eclipse 3.0 3.0 3.4 3.4
Georgetown 2.8 2.8 3.1 3.1
Gnome 2.8 2.9 3.3 3.3
Kelly 3.0 3.1 3.4 3.5
Marquis 2.8 2.7 3.1 3.1
Midnight 2.6 2.6 3.0 3.1
Nassau 2.6 2.7 2.9 3.0
Ram I 2.9 3.0 3.6 3.5
Touchdown 3.3 3.3 3.8 3.8
Victa 2.8 2.7 3.1 3.1
LSD (.05) 0.23 0.22 0.22 0.23
______________________________________
Glume Hairs*
Lowest Whorl Third Whorl
Variety Outer Inner Outer Inner
______________________________________
Ba 69-82 2.2 2.2 2.1 3.1
Ba 73-540 2.5 3.0 2.5 2.5
Abbey 0.6 0.9 1.0 1.0
Adelphi 0.6 2.7 1.1 1.9
America 0.2 0.5 0.3 0.3
Baron 4.8 4.4 4.2 4.6
Bristol 1.0 2.2 0.8 2.2
Chateau 1.5 2.6 2.0 1.8
Coventry 1.5 2.7 1.6 2.4
Eclipse 1.5 1.9 1.8 1.9
Georgetown 1.7 2.7 1.2 2.5
Gnome 1.0 1.9 1.2 1.6
Kelly 1.3 1.5 1.1 0.8
Marquis 0.9 1.1 1.7 1.8
Midnight 1.8 2.8 1.0 2.4
Nassau 2.1 2.6 4.2 4.4
Ram I 1.1 2.3 0.7 1.2
Touchdown 0.7 2.1 1.1 1.4
Victa 0.8 1.1 1.1 1.3
LSD (.05) 0.9 0.9 0.9 0.9
______________________________________
*Rating Scale: 0-9; 9 = most hairs
TABLE 6
______________________________________
Morphological comparison of Flag Leaf of Ba 69-82 and Other
Kentucky Bluegrass Varieties in the Greenhouse
at Marysville, OH.
______________________________________
Length
Width Thickness Leaf
Variety mm mm mm Angle.sup.1
Curve.sup.2
______________________________________
Ba 69-82 4.3 3.2 0.198 1.0 4.9
Ba 73-540 3.8 2.9 0.206 1.0 4.9
Abbey 3.8 3.4 0.145 2.7 4.1
Adelphi 5.7 3.4 0.178 5.2 5.0
America 4.3 2.6 0.211 4.6 5.0
Baron 7.0 4.2 0.152 9.2 4.4
Bristol 4.3 3.2 0.211 2.3 5.0
Chateau 4.0 2.7 0.193 3.4 2.0
Coventry 3.7 3.0 0.140 0.7 4.3
Eclipse 3.9 3.2 0.193 8.7 5.0
Georgetown
5.7 2.8 0.221 1.9 5.0
Gnome 4.5 3.5 0.185 4.3 5.0
Kelly 4.8 4.1 0.178 3.1 4.4
Marquis 5.5 3.6 0.241 2.7 4.6
Midnight 3.8 2.6 0.189 1.1 5.0
Nassau 6.0 3.7 0.191 5.9 4.7
Ram I 3.4 3.1 0.191 1.0 4.8
Touchdown 4.1 2.7 0.163 3.4 4.1
Victa 3.9 3.7 0.267 2.1 4.6
LSD (.05) 1.0 0.4 0.02 2.5 2.4
______________________________________
Hairs.sup.3
Ligule Leaf Sheath.sup.4
Variety mm Margin Ligule
Color
______________________________________
Ba 69-82 1.0 0.1 2.5 1.7
Ba 73-540 0.8 0.4 2.3 2.0
Abbey 1.3 0.8 1.6 0.2
Adelphi 1.1 1.8 1.6 0.4
America 0.6 0.4 0.7 1.9
Baron 1.2 1.0 3.8 2.6
Bristol 0.6 0.4 1.9 2.0
Chateau 0.9 1.1 3.1 0.3
Coventry 0.9 0.8 1.7 2.0
Eclipse 1.1 1.0 1.0 0.2
Georgetown 0.6 0.6 2.0 2.0
Gnome 0.8 0.9 3.2 1.5
Kelly 1.5 1.1 2.5 2.2
Marquis 0.8 0.5 3.8 1.5
Midnight 0.4 0.4 0.3 2.0
Nassau 1.1 2.6 2.4 0.8
Ram I 0.7 0.5 1.3 2.0
Touchdown 1.1 1.0 1.0 7.7
Victa 1.3 1.0 0.8 0.5
LSD (.05) 0.17 0.47 0.7 0.76
______________________________________
.sup.1 Degrees from the stem
.sup.2 Rating Scale: 1-9; 1 = curves up; 5 = no curve; 9 = curves down
.sup.3 Rating Scale: 0-9; 0 = none; 9 = many
.sup.4 Rating Scale: 0-9; 0 = no color; dark purple
TABLE 7
______________________________________
Morphological Comparison of Peduncles, Culms, Node Numbers
Per Culm and Internode Lenght of Ba 69-82 and Other Kentucky
Bluegrass Varieties in the Greenhouse at Marysville, OH.
Peduncle Peduncle Culm Nodes Top
Length Width Length
Per Internode
Variety cm mm cm Culm Length cm
______________________________________
Ba 69-82 21.0 0.595 31.9 3.2 7.2
Ba 73-540
17.9 0.612 28.0 3.1 7.7
Abbey 23.2 0.655 41.3 4.1 11.0
Adelphi 24.5 0.665 40.0 4.0 10.4
America 16.2 0.622 31.8 3.1 11.0
Baron 34.0 0.701 52.8 4.2 12.8
Bristol 22.9 0.734 43.5 4.0 12.6
Chateau 20.7 0.607 38.9 4.4 9.9
Coventry 19.6 0.487 34.7 4.5 7.9
Eclipse 23.7 0.658 39.2 4.9 9.9
Georgetown
21.7 0.683 37.5 3.2 11.1
Gnome 19.4 0.836 35.3 3.1 9.2
Kelly 29.4 0.752 46.6 3.6 11.8
Marquis 27.1 0.831 34.1 3.4 7.8
Midnight 20.5 0.722 29.5 2.8 7.6
Nassau 25.0 0.663 36.0 3.9 7.4
Ram I 22.2 0.694 30.5 2.5 6.6
Touchdown
23.6 0.519 38.0 4.0 8.4
Victa 21.2 0.808 37.9 3.7 10.3
LSD (.05)
3.2 0.08 3.3 0.4 1.9
______________________________________
TABLE 8
______________________________________
Morphological Comparison of Vegetative Leaves of Ba 69-82
and Other Bluegrass Varieties in the Greenhouse at
Marysville, Ohio.
______________________________________
Length
Width Thickness Leaf
Variety mm mm mm Angle.sup.1
Curve.sup.2
______________________________________
Ba 69-82 21.9 3.5 0.279 51.7 8.3
Ba 73-540 18.1 3.5 0.300 53.0 6.2
Abbey 20.7 3.6 0.277 51.3 7.4
Adelphi 19.4 3.7 0.279 67.0 4.6
America 21.4 3.1 0.325 66.0 6.4
Baron 18.2 4.3 0.290 35.0 4.4
Bristol 18.2 3.7 0.320 65.5 6.9
Chateau 23.1 3.3 0.328 39.7 5.4
Coventry 23.4 3.6 0.249 63.0 7.3
Eclipse 20.3 4.4 0.302 65.5 5.4
Georgetown
19.5 3.6 0.287 56.7 5.8
Gnome 18.2 2.9 0.290 43.2 6.6
Kelly 22.8 3.9 0.300 55.5 7.0
Marquis 19.7 3.7 0.376 46.8 7.8
Midnight 19.5 3.5 0.310 63.3 5.0
Nassau 16.3 3.7 0.292 63.2 4.9
Ram I 19.1 3.6 0.271 70.8 6.5
Touchdown 16.7 3.7 0.243 51.3 4.0
Victa 21.5 3.6 0.360 56.3 6.7
LSD (.05) 3.5 0.43 0.04 15.9 1.5
______________________________________
Hairs.sup.3
Ligule Leaf Leaf Sheath
Variety mm Ligule Margin
Roughness.sup.4
Color.sup.5
______________________________________
Ba 69-82 0.14 2.7 1.4 8.1 1.7
Ba 73-540 0.14 2.0 1.6 8.3 1.9
Abbey 0.32 4.4 2.8 7.7 0.0
Adelphi 0.34 2.6 3.4 8.8 0.0
America 0.12 1.7 2.1 8.4 2.0
Baron 0.33 4.6 3.6 7.4 0.4
Bristol 0.12 2.6 3.0 8.9 2.0
Chateau 0.22 3.3 3.1 7.8 0.5
Coventry 0.32 3.1 2.4 8.1 0.3
Eclipse 0.38 2.8 2.6 9.0 0.2
Georgetown
0.14 2.5 2.4 8.5 2.0
Gnome 0.23 1.6 0.8 7.5 1.4
Kelly 0.34 4.6 2.4 8.8 0.0
Marquis 0.21 3.6 1.1 6.8 1.1
Midnight 0.10 1.3 1.6 7.7 2.0
Nassau 0.34 2.5 3.3 8.5 1.4
Ram I 0.09 1.8 2.0 7.7 2.0
Touchdown 0.29 1.4 1.3 7.9 8.0
Victa 0.26 2.3 1.7 7.9 0.1
LSD (.05) 0.04 0.79 0.70 089 0.57
______________________________________
.sup.1 Degrees from stem
.sup.2 Rating Scale: 1-9; 1 = curves up; 5 = no curve; 9 = curves down
.sup.3 Rating Scale: 0-9; 1 = none; 9 = many
.sup.4 Rating Scale: 1-9; 1 = rough; 9 = smooth
.sup.5 Rating Scale: 0-9; 0 = no color; 9 = dark purple color
Ba 69-82 has performed well throughout the U.S. and Canada as exhibited by high turf quality ratings in a number of locations across the U.S. in comparison to other Kentucky Bluegrass varieties. In addition, it has a pleasant medium green color which can be maintained throughout the growing season and good winter color. It demonstrates early spring greening and good spring density.
With regard to a comparative analysis conducted for purposes of determining color of Ba 69-82 plants relative to other Kentucky Bluegrass varieties, readings were taken of the vegetative color of Ba 69-82 during mid-May while the turf was actively growing with adequate nutrient and water availability. The readings were taken in full sun with several actively growing leaves being compared, one at a time, utilizing color chips from the Munsell Book of Color as a reference. On this basis, the color of Ba 69-82 was determined to be 5 GY 4/4. During the same time period, the color of similar leaves of other Kentucky Bluegrass varieties were determined by the same procedure to be as follows: Ba 73-381-5 GY 4/4; Ba 73-366-5 GY 4/4; Ba 73-540-5 GY 4/4; Abbey - 5GY 3/4; and Coventry-5 GY 4/4. However, it should be noted that the general apparent color of turf does not always correlate directly with the color of the individual actively growing leaves within the turf and that turf color varies with nutrient level and time of year with some varieties being darker or lighter green depending on such factors.
Comparisons of Ba 69-82 with other Kentucky Bluegrass varieties for quality, genetic color, winter color and spring greening are set forth hereinafter in Tables 9-12;
TABLE 9
______________________________________
A Comparison of Quality of Ba 69-82 and Other Kentucky
Bluegrass Varieties in Four Annual Tests (A-D) Conducted at
Forty Turfgrass Locations in the U.S. and Canada
TESTS (Annual/Means)
Variety A B C D
______________________________________
Ba 69-82 5.7 5.7 6.1 5.8
Ba 73-540 5.8 5.9 6.0 5.8
Abbey 5.6 5.7 5.9 5.7
Able 1 5.7 5.7 6.0 6.1
Amazon 5.4 5.5 5.5 5.5
America 5.8 5.9 6.1 6.2
A-34 5.6 5.9 6.0 6.1
Baron 5.8 5.6 5.9 5.8
Bristol 5.7 6.0 6.1 6.0
Chateau 6.0 5.8 6.0 6.0
Classic 5.9 5.8 6.0 5.9
Coventry 5.8 5.8 5.9 5.8
Eclipse 5.6 5.9 6.2 6.3
Estate 5.9 5.9 5.9 5.8
Georgetown 5.8 5.6 5.8 5.8
Glade 5.7 5.8 6.1 6.1
Gnome 5.5 5.3 5.6 5.5
Haga 5.8 5.8 5.8 5.9
Kelly 5.6 5.7 5.9 5.8
Kenblue 5.0 4.7 5.0 5.2
Marquis 5.3 5.6 5.7 5.7
Merion 5.4 5.4 5.7 5.6
Merit 5.6 5.6 5.9 5.8
Midnight 6.1 6.3 6.4 6.3
Monopoly 5.5 5.5 5.9 5.9
Nassau 5.6 5.7 5.8 5.5
Ram I 5.7 5.6 5.9 5.8
Victa 5.8 5.7 5.8 5.8
LSD (.05) 0.2 0.2 0.2 0.2
______________________________________
Rating Scale: 1-9; 9 = ideal turf
*Not all forty locations reported data each year.
TABLE 10
______________________________________
A Comparison of Genetic Color of Ba 69-82 and Other Kentucky
Bluegrass Varieties at 15 Locations in the U.S. and Canada
TESTS (Annual Means)
Variety A B C D
______________________________________
Ba 69-82 6.8 6.1 6.4 6.3
Ba 73-540 6.5 6.2 6.3 6.5
Abbey 6.8 6.2 6.7 6.6
Able I 7.1 6.8 6.7 6.9
Amazon 6.2 6.9 7.0 6.5
America 6.8 6.6 7.0 6.6
A-34 5.7 5.6 5.7 5.7
Baron 6.8 6.5 6.9 6.8
Bristol 7.3 7.1 6.6 6.6
Chateau 6.5 6.0 6.2 6.5
Classic 5.8 5.6 6.3 5.9
Coventry 6.5 6.0 6.5 6.6
Eclipse 7.7 6.7 6.5 6.6
Estate 6.7 5.9 6.3 6.6
Georgetown 6.1 5.7 5.9 6.7
Glade 7.4 7.0 6.7 6.9
Gnome 6.4 6.5 6.8 6.7
Haga 5.8 5.5 6.1 5.8
Kelly 6.7 6.5 6.9 6.5
Kenblue 5.2 5.2 5.5 6.0
Marquis 7.2 6.6 6.8 6.5
Merion 6.4 5.6 6.0 6.5
Merit 6.7 6.4 6.5 6.1
Midnight 8.0 7.9 7.5 7.7
Monopoly 5.3 5.5 5.5 5.3
Nassau 7.1 6.7 6.9 6.8
Ram I 6.9 6.6 6.9 6.6
Victa 6.7 6.3 6.7 6.5
LSD (.05) 0.4 0.4 0.4 0.4
______________________________________
Rating Scale; 1-9:9 = dark green
TABLE 11
______________________________________
A Comparison of Spring Greenup for Ba 69-82 and Other
Kentucky Bluegrass Varieties at Five Locations* in the
U.S. and Canada
Variety Annual Means
______________________________________
Ba 69-82 4.8
Ba 73-540 4.6
Abbey 4.2
Able I 3.7
Amazon 3.7
America 3.9
A-34 5.2
Baron 4.2
Bristol 5.0
Chateau 4.9
Classic 4.5
Coventry 4.6
Eclipse 4.5
Estate 4.6
Georgetown 4.2
Glade 4.9
Gnome 3.9
Haga 4.5
Kelly 4.0
Kenblue 5.1
Marquis 4.0
Merion 4.3
Merit 3.9
Midnight 3.9
Monopoly 4.1
Nassau 5.2
Ram I 4.3
Victa 4.3
LSD (.05) 0.7
______________________________________
Rating Scale: 1-9:9 = completely green.
*Locations: Agassiz, British Columbia; Post Fall, ID; West Lafayette, In;
Columbus, OH; Kingston, RI.
TABLE 12
______________________________________
A Comparison of Winter Color of Ba 69-82 and Other
Kentucky Bluegrass Varieties in the U.S. and Canada
Winter Color
Wichita, Agassiz
Variety Kansas British Columbia
______________________________________
Ba 69-82 5.0 5.0
Ba 73-540 5.0 5.0
Abbey 3.0 4.7
Able I 5.7 4.0
Amazon 4.0 4.0
America 4.7 4.0
A-34 4.7 4.3
Baron 3.3 4.7
Bristol 5.7 5.0
Chateau 5.0 5.0
Classic 5.0 4.0
Coventry 5.0 5.0
Eclipse 4.0 4.3
Estate 4.3 5.0
Georgetown 5.3 4.0
Glade 3.3 4.3
Gnome 2.7 4.3
Haga 5.0 4.0
Kelly 3.7 4.7
Kenblue 3.0 3.0
Marquis 3.3 4.3
Merion 3.0 4.0
Merit 3.3 5.0
Midnight 4.3 4.7
Monopoly 3.7 4.7
Nassau 5.7 5.0
Ram I 5.0 4.7
Victa 3.7 5.0
LSD (.05) 1.0 0.6
______________________________________
Rating Scale: 1-9; 9 = complete color retention.
Further comparisons of Ba 69-82 with other Kentucky Bluegrass varieties for leaf texture and spring, summer and fall density are given in Tables 13-16 as follows:
TABLE 13
______________________________________
A Comparison of Leaf Texture of Ba 69-82 and Other
Kentucky Bluegrass Varieties in Two Annual Tests (A-B)
Conducted at Eight Locations in the U.S. and Canada*
TESTS (Annual Means)
Variety A B
______________________________________
Ba 69-82 5.7 5.8
Ba 73-540 5.8 5.6
Abbey 6.3 6.3
Able I 7.1 7.3
Amazon 7.5 7.2
America 7.1 7.2
A-34 6.4 6.9
Baron 6.8 6.1
Barzan 6.1 6.7
Bristol 6.7 6.3
Chateau 6.1 6.0
Classic 6.6 7.0
Coventry 5.9 5.7
Eclipse 6.4 6.5
Estate 6.3 5.9
Georgetown 6.8 6.8
Glade 6.8 6.7
Gnome 6.1 6.2
Haga 6.7 7.1
Kelly 6.4 5.7
Kenblue 7.8 7.3
Marquis 6.1 5.7
Merion 6.7 6.8
Merit 6.3 6.1
Midnight 7.3 6.7
Monopoly 7.1 6.8
Nassau 6.6 6.5
Ram I 7.3 7.1
Victa 6.3 6.0
LSD (.05) 0.5 0.5
______________________________________
Rating Scale: 1-9; 9 = very fine
*Locations Test A: West Lafayette, In.; Columbia, Mo.; Farmington, NM;
Columbus, OH.; Brookings, SD; Puyallup, WA.
Locations Test B: Agassiz, British Columbia; Post Falls, ID.; Columbus,
OH.; Brookings, SD,; Puyallup, WA.
TABLE 14
______________________________________
A Comparison of Spring Density for Ba 69-82 and Other
Kentucky Bluegrass Varieties in Two Annual Tests (A-B)
Conducted at Five Locations* in the U.S. and Canada
TESTS (Annual Means)
Variety A B
______________________________________
Ba 69-82 6.7 7.1
Ba 73-540 6.5 7.6
Abbey 5.8 6.8
Able I 5.8 7.4
Amazon 6.7 6.7
America 6.2 7.1
A-34 5.7 7.3
Baron 6.3 6.8
Bristol 5.3 6.9
Chateau 6.7 7.3
Classic 5.5 7.2
Coventry 6.5 7.1
Eclipse 5.5 7.1
Estate 6.3 7.2
Georgetown 5.5 6.9
Glade 6.8 7.3
Gnome 6.0 6.3
Haga 5.5 7.3
Kelly 6.3 6.7
Kenblue 6.2 6.0
Marquis 6.0 6.6
Merion 6.3 7.3
Merit 5.8 6.7
Midnight 6.7 7.4
Monopoly 6.2 7.0
Nassau 6.2 6.6
Ram I 7.0 6.4
Victa 5.8 6.8
LSD (.05) 0.8 0.7
______________________________________
Rating Scale: 1-9; 9 = maximum density
*Locations Test A: Winnipeg, Manitoba; Columbus, OH.
Locations Test B: Columbia, Mo; University Park, Pa.; Brookings, SD.
TABLE 15
______________________________________
A Comparison of Summer Density of Ba 69-82 and Other
Kentucky Bluegrass Varieties in Two Annual Tests (A-B)
Conducted at Four Locations in the U.S. and Canada*
TESTS (Annual Means)
Variety A B
______________________________________
Ba 69-82 6.8 8.2
Ba 73-540 6.7 8.2
Abbey 7.1 8.0
Able I 6.8 7.8
Amazon 6.8 8.2
America 6.8 7.7
A-34 6.8 7.8
Baron 6.3 7.7
Bristol 6.4 7.8
Chateau 7.3 8.3
Classic 6.3 8.0
Coventry 6.8 8.2
Eclipse 6.3 7.7
Estate 6.6 8.2
Georgetown 5.9 7.3
Glade 6.2 8.2
Gnome 6.3 7.3
Haga 6.3 7.7
Kelly 6.4 7.7
Kenblue 6.1 7.2
Marquis 6.3 7.0
Merion 6.4 7.8
Merit 6.3 7.8
Midnight 6.5 7.8
Monopoly 5.8 7.7
Nassau 6.1 7.0
Ram I 6.7 7.8
Victa 6.2 8.0
LSD (.05) 0.8 0.7
______________________________________
Rating Scale: 1-9; 9 = maximum density
*Locations Test A: Winnipeg, Manitoba; Columbus, OH.
Locations Test B: Columbia, Mo.; Brookings, SD.
TABLE 16
______________________________________
A Comparison of Fall Density Ba 69-82 and Other Kentucky
Bluegrass Varieties in Two Annual Tests (A-B) Conducted at
Five Locations in the U.S. and Canada*
TESTS (Annual Means)
Variety A B
______________________________________
Ba 69-82 8.0 7.5
Ba 73-540 8.7 7.8
Abbey 7.0 7.2
Able I 8.2 7.4
Amazon 9.0 7.8
America 8.7 7.5
A-34 8.2 7.9
Baron 8.0 7.0
Bristol 7.8 7.5
Chateau 8.2 7.5
Classic 8.2 7.5
Coventry 9.0 7.3
Eclipse 8.0 7.5
Estate 8.0 7.4
Georgetown 7.3 7.1
Glade 7.8 7.6
Gnome 7.7 7.1
Haga 8.3 7.5
Kelly 7.2 7.8
Kenblue 8.3 7.5
Marquis 6.2 6.8
Merion 7.3 7.3
Merit 7.2 7.0
Midnight 8.3 8.1
Monopoly 7.5 7.1
Nassau 6.5 7.3
Parade 8.7 7.5
Ram I 9.0 7.6
Victa 7.8 7.1
LSD (.05) 0.5 0.6
______________________________________
Rating Scale: 1-9:9 = maximum density
*Locations Test A: Winnipeg, Monitoba; Brookings, SD.
Locations Test B: Post Falls, ID.; Winnipeg, Manitoba; Columbia, Mo.;
Columbus, OH.
Turf diseases are one of the major causes of inconsistent and poor turf performance among locations and years. Ba 69-82 has been found to have a high level of resistance to leaf spot, melting out and crown rot caused by Drechslera poae (formerly called Helminthosporium vagans), a medium to high level of resistance to several rust diseases caused by Puccinia spp., dollarspot caused by Sclerotina homeocarpa, red thread caused by Laetisaria fuciformis (formerly called Corticium fuciforme), necrotic ring spot caused by Leptosphaeria korrae, stripe smut caused by Ustilago striiformis, and powdery mildew caused by Erysinhe graminis.
Comparisons of disease incidence in Ba 69-82 as compared with other Kentucky Bluegrass varieties in regard to leaf spot, melting out, rusts, dollarspot, red thread, stripe smut, necrotic ring spot and powdery mildew are presented in Tables 17-27. Additional comparisons are presented in Tables 28-31 for drought stress, sod strength and seed yields.
TABLE 17
______________________________________
A Comparison of Leaf Spot Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties in Two Annual Tests
Conducted at Five Locations in the U.S. and Canada*
TEST (Annual Means)
Variety A B
______________________________________
Ba 69-82 7.2 6.2
Ba 73-540 5.9 5.7
Abbey 4.6 5.8
Able I 6.8 5.7
Amazon 5.2 5.8
America 5.7 6.5
A-34 6.3 5.7
Baron 6.0 6.5
Bristol 7.9 6.5
Chateau 6.4 6.2
Classic 6.2 6.0
Coventry 5.0 6.2
Eclipse 7.4 7.0
Estate 6.8 5.8
Georgetown 6.7 6.5
Glade 7.4 5.8
Gnome 6.0 6.3
Haga 6.7 6.0
Kelly 5.1 6.2
Kenblue 4.8 2.0
Marquis 6.4 6.2
Merion 6.2 6.3
Merit 5.6 6.5
Midnight 7.2 6.2
Monopoly 5.6 6.7
Nassau 6.6 6.2
Ram I 4.9 5.0
Victa 6.0 6.2
LSD (.05) 1.0 0.9
______________________________________
Rating Scale: 1-9; 9 = no disease
*Locations Test A: Post Falls, ID.; Hubbard, OR.; Remington, VA.
Locations Test B: Beltsville, MD.; Blacksburg, VA.
TABLE 18
______________________________________
A Comparison of Leaf Spot Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties in Three Annual Tests
(A-C) Conducted at Marysville, OH
% Leaf Spot Tests
Variety A B C
______________________________________
Ba 69-82 4.3 1.0 16.7
Adelphi 17.7 2.3 11.7
Bristol 5.2 1.0 5.0
Marquis 5.2 1.0 8.3
Parade 7.7 13.3 16.7
Park 62.5 76.7 90.0
Vantage 33.3 7.0 25.0
Victa 9.2 1.0 10.7
LSD (.05) 3.1 15.7
______________________________________
TABLE 19
______________________________________
A Comparison of Leaf Spot Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties in Two Annual Tests (A-B)
Conducted at Gervais, Oregon
% Leaf Spot Tests
Variety A B
______________________________________
Ba 69-82 10.0 16.7
Adelphi 70.0 73.3
America 53.3 36.7
Bristol 5.0 10.0
Glade 21.7 36.7
Kenblue 88.3 66.7
Marquis 83.3 88.3
Merit 80.0 83.3
Newport 50.0 60.1
Victa 80.0 78.3
LSD (.05) 16.0 26.0
______________________________________
TABLE 20
______________________________________
A Comparison of Leaf Spot Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties at Prince Fredrick, Maryland
Variety % Leaf Spot
______________________________________
Ba 69-82 12.5
Fylking 10.0
Kenblue 60.0
Merion 15.0
Nugget 10.0
Newport 40.0
Vantage 20.0
Victa 27.5
LSD (.05) 23
______________________________________
TABLE 21
______________________________________
A Comparison of Melting Out Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties at Three Locations*
Melting Out
Variety Spring Fall
______________________________________
Ba 69-82 5.0 9.0
Ba 73-540 5.2 8.7
Abbey 3.7 8.0
Able I 4.5 9.0
Amazon 4.2 7.0
America 5.2 8.7
A-34 4.8 8.7
Baron 4.3 8.3
Bristol 5.7 9.0
Chateau 5.5 9.0
Classic 6.2 8.7
Coventry 4.3 9.0
Eclipse 5.0 7.0
Estate 5.3 9.0
Georgetown 5.8 9.0
Glade 4.5 8.0
Gnome 4.5 8.7
Haga 6.2 9.0
Kelly 3.8 8.3
Kenblue 3.7 1.0
Marquis 4.8 7.7
Merion 5.0 9.0
Merit 4.2 8.3
Midnight 4.0 9.0
Monopoly 4.5 8.0
Nassau 5.0 9.0
Ram I 4.5 5.3
Victa 5.2 8.0
LSD (.05) 0.7 1.6
______________________________________
Rating Scale: 1-9; 9 = no disease
*Locations: Fall Puyallup, Wa. Spring Blacksburg, Va.; Blackstone, Va.
TABLE 22
______________________________________
A Comparison of Stripe Smut Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties in 2 Tests (A-B) Conducted
at Prince Fredrick, Md
% Stripe Smut
Variety A B
______________________________________
Ba 69-B2 4.0 1.5
Fylking 27.5 40.0
Kenblue 5.0 2.5
Merion 37.5 75.0
Nugget 4.0 17.5
Newport 12.5 10.0
Vantage 12.5 30.0
Victa 55.0 50.0
LSD (.05) 30 22
______________________________________
TABLE 23
______________________________________
A Comparison of Dollar Spot Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties at Columbia, MO
Variety Dollar Spot
______________________________________
Ba 69-82 7.7
Ba 73-540 8.0
Abbey 7.3
Able I 7.7
Amazon 6.7
America 7.3
A-34 7.3
Baron 7.0
Bristol 7.7
Chateau 6.7
Classic 6.3
Coventry 7.7
Eclipse 7.7
Estate 7.3
Georgetown 7.3
Glade 7.3
Gnome 8.0
Haga 7.3
Kenblue 7.3
Merion 7.3
Merit 6.7
Midnight 6.7
Monopoly 7.0
Nassau 6.7
Ram I 6.0
Victa7.7
LSD (.05) 1.4
______________________________________
Rating Scale: 1-9; 9 = no disease
TABLE 24
______________________________________
A Comparison of Powdery Mildew Disease Incidence in
Ba 69-82 and Other Kentucky Bluegrass Varieties in Two
Annual Tests Conducted at Two Separate Locations
Powdery Mildew
Adelphia. N J
Ritzville, WA
Variety Test Test
______________________________________
Ba 69-82 5.3 7.0
Ba 73-540 5.7 6.0
Abbey 1.0 3.5
Able I 6.7 5.7
Amazon 5.0 4.7
America 7.7 8.0
A-34 6.7 5.0
Baron 1.3 4.0
Bristol 7.0 8.0
Chateau 5.3 5.0
Classic 2.7 6.7
Coventry 6.0 6.0
Eclipse 5.0 6.0
Estate 7.0 6.7
Georgetown 2.7 6.0
Glade 3.3 6.0
Gnome 1.0 3.7
Haga 3.0 6.3
Kenblue 5.0 8.0
Merion 1.0 5.7
Merit 1.7 4.6
Midnight 1.7 4.0
Monopoly 6.7 7.7
Nassau 2.3 5.7
Ram I 6.7 4.7
Victa 1.7 4.3
LSD (.05) 1.4 2.3
______________________________________
Rating Scale: 1-9; 9' = no disease
TABLE 25
______________________________________
A Comparison of Rust Disease Incidence in Ba 69-82 and Other
Kentucky Bluegrass Varieties in Annual Testing at Various
Locations in the U.S. and Canada
Crown
Stripe Rust
Rust
Stem Rust Agassiz, Agassiz
Adelphia Post Falls
British British
New Jersey Idaho Columbia
Columbia
Variety Test Test Test Test
______________________________________
Ba 69-82 8.3 8.0 8.0 9.0
Ba 73-540
8.0 8.0 8.0 9.0
Abbey 6.3 8.3 6.3 7.0
Able I 7.0 8.0 7.3 8.3
Amazon 6.0 7.3 7.0 9.0
America 8.3 7.7 8.0 8.3
A-34 8.0 8.0 7.0 8.3
Baron 7.3 8.0 7.0 8.0
Bristol 8.7 8.0 8.0 8.3
Chateau 8.3 7.3 7.3 9.0
Classic 8.7 8.3 8.0 9.0
Coventry 8.3 8.0 8.0 8.0
Eclipse 7.7 8.3 6.3 9.0
Estate 7.3 7.7 8.0 9.0
Georgetown
9.0 7.7 7.0 8.7
Glade 7.7 8.0 6.0 6.7
Gnome 7.7 8.7 7.0 7.7
Haga 9.0 7.3 7.3 8.0
Kenblue 8.3 7.7 7.7 6.7
Merion 2.7 4.0 5.3 5.0
Merit 8.0 8.0 6.7 7.0
Midnight 8.3 7.3 5.7 6.3
Monopoly 8.0 7.3 7.3 9.6
Nassau 7.7 8.0 7.3 8.3
Ram I 8.7 6.7 7.0 8.3
Victa 7.7 5.7 5.7 7.3
LSD (.05)
1.0 2.0 1.2 1.4
______________________________________
Rating Scale: 1-9 9 = no disease
TABLE 26
______________________________________
A Comparison of Necrotic Ring Spot Disease Incidence in Ba
69-82 and Other Kentucky Bluegrass Varieties at Post Falls, Id.
Variety Necrotic Ring Spot
______________________________________
Ba 69-82 9.0
Ba 73-540 7.3
Abbey 7.0
Able I 9.0
Amazon 6.3
America 8.3
A-34 8.7
Baron 9.0
Bristol 8.3
Chateau 8.0
Classic 9.0
Coventry 8.7
Eclipse 7.7
Estate 8.3
Georgetown 9.0
Glade 9.0
Gnome 8.3
Haga 9.0
Kelly 8.7
Kenblue 9.0
Merion 9.0
Merit 9.0
Midnight 8.0
Monopoly 9.0
Mystic 8.7
Nassau 9.0
Ram I 9.0
Victa 9.0
LSD (.05) 1.8
______________________________________
Rating Scale: 1-9; 9 = no disease
TABLE 27
______________________________________
A Comparison of Red Thread Disease Incidence in Ba 69-82 and
Other Kentucky Bluegrass Varieties at Gervais, Oregon
Variety % Red Thread
______________________________________
Ba 69-82 0.0
Adelphi 0.0
America 1.7
Bristol 0.0
Glade 15.0
Kenblue 23.3
Marquis 6.7
Merit 6.7
Newport 3.3
Victa 10.0
LSD (.05) 13.0
______________________________________
TABLE 28
______________________________________
A Comparison of Percent Drought Damage in Ba 69-82 and
Other Kentucky Bluegrass Varieties in Two Annual Tests (A-B)
Conducted at Prince Fredrick, Maryland
% Drought Damage Test
Variety A B
______________________________________
Ba 69-82 0.0 17.5
Fylking 12.5 25.0
Kenblue 5.0 7.5
Merion 2.5 15.0
Nugget 12.5 20.0
Newport 7.5 10.0
Vantage 0.0 15.0
Victa 15.0 45.0
LSD (.05) 11.0 29.0
______________________________________
TABLE 29
______________________________________
A Comparison of Sod Strength 8 and 12 Months After Planting
of Ba 69-82 and Other Kentucky Bluegrass Varities at
Remington, VA
SOD STRENGTH
Variety 8 Months 12 Months
______________________________________
Ba 69-82 26.0 20.0
Ba 73-540 20.3 11.7
Abbey 17.0 8.0
Able I 16.3 8.7
Amazon 18.0 8.7
America 30.7 18.7
A-34 21.7 9.7
Baron 25.7 14.7
Bristol 24.7 8.3
Challenger 23.0 12.0
Chateau 23.3 15.0
Classic 23.0 15.3
Coventry 18.0 11.0
Eclipse 22.0 13.0
Estate 23.3 16.0
Georgetown 30.0 14.3
Glade 26.3 18.0
Gnome 22.0 14.3
Haga 22.3 13.0
Kenblue 22.0 16.3
Marquis 23.0 12.7
Merion 21.3 11.3
Merit 25.3 13.3
Midnight 22.3 14.3
Monopoly 26.0 8.3
Nassau 22.3 8.3
Ram I 22.3 11.0
Victa 29.3 16.3
Wabash 16.7 10.3
LSD (.05) 6.9 6.1
______________________________________
Rating Scale: Kilograms of tension needed to tear sod.
TABLE 30
______________________________________
Seed Yield Comparison in Pounds Per Acre of Ba 69-82 and
Other Kentucky Bluegrass Varieties in Three Annual Tests
(A-C) Conducted in Oregon
Madras, Oregon
LaGrande, Oregon
Variety Test A Test B Test C
______________________________________
Ba 69-82 884 920 894
Abbey -- 1253 1512
Baron 1194 -- --
Chateau 1113 857 876
Coventry 1090 -- --
Estate -- 857 876
Marquis -- 1030 1174
Victa 1324 1200 1419
LSD 181 149
______________________________________
TABLE 31
______________________________________
A Comparison of Seed Yields in Pounds Per Acre of Ba 69-82
and Other Kentucky Bluegrass Varities at LaGrande, Oregon
Variety Yield
______________________________________
Ba 69-82
1,159
Ba 73-366
1,612
Ba 73-381
1,551
Ba 74-114
748
Abbey 1,549
Coventry
1,046
LSD (.05)
160
______________________________________
Claims
1. A variety of Kentucky bluegrass plant, substantially as shown and described, characterized by a medium to high level of resistance to several serious diseases including leaf spot, melting out, several rusts, dollar spot, powdery mildew and stripe smut, and a desirable green color throughout the growing season, a strong sod former, forms a high quality dense persistent turf under a wide variety of environmental conditions and has a medium level of seed yielding capacity.
| PP3156 | July 1970 | Fuchigami et al. |
| PP3186 | May 1972 | Barenbrug et al. |
| PP4336 | November 28, 1978 | Mayer et al. |
| PP6280 | September 6, 1988 | Meier et al. |
| PP6537 | January 17, 1989 | Meier et al. |
| PP6538 | January 17, 1989 | Meier et al. |
| PP6585 | February 7, 1989 | Meier et al. |
| PP7831 | March 17, 1992 | Meier et al. |
| PP8490 | December 7, 1993 | Meier et al. |
| PP9036 | January 3, 1995 | Meier et al. |
| PP9209 | July 18, 1995 | Meier et al. |
Type: Grant
Filed: May 30, 1995
Date of Patent: Jul 23, 1996
Assignee: OMS Investments, Inc. (Wilmington, DE)
Inventor: Virgil D. Meier (Marysville, OH)
Primary Examiner: James R. Feyrer
Application Number: 8/453,864
International Classification: A01H 512;
