1. Field of the Invention
The present invention relates to a new and distinct variety of Poa
pratensis that has been designated `Ba75-173` Kentucky bluegrass.
2. Description of Related Art
Kentucky Bluegrasses have been disclosed in U.S. Plant Pat. No. 3,150,
issued May 2, 1972; 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 on Jan. 17, 1989; U.S. Plant
Plant. 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; U.S. Plant Pat. No. 9,209, issued
Jul. 18, 1995; U.S. Plant Pat. No. 9,611, issued Jul. 23, 1996; U.S. Plant
Pat. No. 9,848, issued Apr. 1, 1997: U.S. Plant Pat. No. 9,977, issued
Jul. 22, 1997; U.S. Plant Pat. No. 10,080, issued Oct. 21, 1997; U.S.
Plant Pat. No. 10,081, issued Oct. 21, 1997; U.S. Plant Pat. No. 10,384,
ussued May 5, 1998; U.S. Plant Pat. No. 10,925, issued May 25, 1999; and
U.S. Plant Pat. No. 11,536, filed Feb. 27, 1998, U.S. Plant Pat. No.
11,520, filed Jul. 22, 1998 as well as U.S. Plant Pat. No. 11,647, filed
Aug. 17, 1999.
`Ba75-173` plant material originated from a single plant that was progeny
resulting from crossing `Nugget` Kentucky Bluegrass, as the seed parent,
with `Ba70-46`, an unreleased, unpatented Kentucky Bluegrass plant grown
and maintained in a plant nursery in Marysville, Ohio, as the pollen
parent. As a result of this breeding, a distinct variety was produced and
asexually propagated by rhizomes, tillers and disseminules. The highly
apomictic seed of `Ba75-173` 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.
The seed of `Ba75-173` has been found to be stable. Asexual production of
`Ba75-173` initially was performed at Marysville, Ohio by propagules
(tillers and rhizomes) and by disseminules (modified caryopses produced by
apomixis), and has consistently produced progeny plants indistinguishable
from the first generation asexual reproductions of the instant plant. The
apomixis level of `Ba75-173` is approximately 98.4% (plus or minus 2.8%).
The apomixis level was determined by examining seedling characteristics of
approximately 100 to 150 seedlings from different crop years in a growth
chamber and any seedling with one or more characteristics different from
the other `Ba75-173` seedlings was classified as not being of apomictic
origin.
`Ba75-173` has a number of highly desirable characteristics, including a
high level of resistance to Drechslera spp that causes melting out; a
medium to high level of resistance to Magnaporthe poae that causes summer
patch, a medium to high level of resistance to Puccinia graminis that
causes stem rust, a medium to high level of resistance to Sclerotinia
homeocarpia that causes dollarspot, and a medium to high level of
resistance to Typhula spp that causes grey snowmold. `Ba75-173` has an
attractive leafy turf type and a medium to dark green color which can be
maintained throughout the entire growing season. `Ba75-173` demonstrates
good fall color and good winter color under mild winter conditions.
`Ba75-173` is an overall good turfgrass performer as evidenced by good
scores for quality and color throughout the cool season in turfgrass
growing regions of the United States. `Ba75-173` has a high seed yield
potential in the bluegrass seed production region of the northwestern
United States.
In comparison with other Kentucky bluegrass varieties, `Ba75-173` has a
larger seed (longer and wider) with a lower number of seeds per pound. The
panicle of `Ba75-173` Kentucky bluegrass is longer and has a higher number
branches in the lowest whorl than other Kentucky bluegrasses. The peduncle
is shorter and thicker, and the culm is longer than other Kentucky
bluegrass varieties. It has a flag leaf that is wider and longer with a
longer ligule that has more hairs when compared to other Kentucky
bluegrasses.
FIG. 1 is a `Ba75-173` Kentucky bluegrass panicle;
FIG. 2 is a `Ba75-173` Kentucky bluegrass seed; and
FIG. 3 is a `Ba75-173` Kentucky bluegrass plant shortly after completing
anthesis.
`Ba75-173` 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 (60-80° F.), culms are erect averaging 45.7 cm in
length. The uppermost internode averages 7.6 cm in length. The peduncle
averages 20.8 cm in length and 0.90 mm in width. The vegetative leaf
averages 26.9 cm in length, 3.7 mm in width, 0.28 mm in thickness and the
ligule 0.34 mm in lenth. The flag leaf averages 6.1 cm in length, 3.8 mm
in width, 0.27 mm in thickness and a ligule length of 1.13 mm.
The panicle averages 8.2 cm in length, 7.3 cm in width, and has 5.8 whorls.
The lowest whorl and the third whorl from the bottom of the panicle
average 4.4 and 3.5 branches, respectively. A spikelet in the lowest whorl
averages 4.4 mm in length, 2.0 mm in width, 2.7 florets and the outer
glume and inner glume average 2.8 mm and 3.2 mm in length, respectively. A
spikelet from the third whorl from the bottom of the panicle averages 4.6
mm in length, 2.0 mm in width, 3.1 florets, and the outer glume and inner
glume averages 2.8 mm and 3.3 mm in length, respectively. For the
vegetative leaf, the number of hairs is about average for the leaf sheath
margin, about average for the dorsal side of the leaf sheath, above
average for the upper margin of the ligule, and about average for the
collar margin. `Ba75-173` differs from the other Kentucky bluegrass
varieties in regard to such morphological characteristics as seed length
and width, panicle length, number of branches in the lowest whorl, flag
leaf length and width, flag leaf ligule length, flag leaf ligule hair,
peduncle length and thickness, and culm length.
Since environmental conditions such as soil and climate may influence
morphological characteristics to some extent, comparisons of `Ba75-173`
were made with other Kentucky bluegrass varieties under like conditions
and the comparisons are set forth in Tables 1-7, as follows:
| TABLE 1 |
| Morphological Comparisons of Peduncles, Culms, Nodes, and |
| Top Internodes of `Ba75-173` with Other Kentucky Bluegrass |
| Varieties in the Greenhouse at Marysville, Ohio. |
| Peduncle Peduncle Culm Top |
| Length Width Length Number Internode |
| Variety (cm) (mm) (cm) of Nodes Length (cm) |
| `Ba75-173` 20.78 0.90 45.7 2.9 7.57 |
| `Abbey` 23.20 0.87 45.1 3.0 7.44 |
| `Ascot` 21.17 0.73 40.6 2.2 6.54 |
| `Coventry` 22.54 0.79 42.8 2.6 8.22 |
| LSD (.05) 2.39 0.09 2.8 0.4 1.56 |
| TABLE 1 |
| Morphological Comparisons of Peduncles, Culms, Nodes, and |
| Top Internodes of `Ba75-173` with Other Kentucky Bluegrass |
| Varieties in the Greenhouse at Marysville, Ohio. |
| Peduncle Peduncle Culm Top |
| Length Width Length Number Internode |
| Variety (cm) (mm) (cm) of Nodes Length (cm) |
| `Ba75-173` 20.78 0.90 45.7 2.9 7.57 |
| `Abbey` 23.20 0.87 45.1 3.0 7.44 |
| `Ascot` 21.17 0.73 40.6 2.2 6.54 |
| `Coventry` 22.54 0.79 42.8 2.6 8.22 |
| LSD (.05) 2.39 0.09 2.8 0.4 1.56 |
| TABLE 3 |
| Morphological Comparisons of Flag Leaves of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties |
| in the Greenhouse at Marysville, Ohio. |
| Length Width Thickness Ligule Length Ligule |
| Variety (cm) (mm) (mm) (mm) Hair* |
| `Ba75-173` 6.05 3.80 0.265 1.13 6.1 |
| `Abbey` 5.47 3.48 0.246 1.06 3.3 |
| `Ascot` 3.09 2.62 0.233 0.90 3.2 |
| `Coventry` 4.86 3.23 0.247 0.97 3.7 |
| LSD (.05) 0.97 0.36 0.037 0.153 1.2 |
| *Rating 0-9; 0 = none; 9 = many hairs. |
| TABLE 3 |
| Morphological Comparisons of Flag Leaves of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties |
| in the Greenhouse at Marysville, Ohio. |
| Length Width Thickness Ligule Length Ligule |
| Variety (cm) (mm) (mm) (mm) Hair* |
| `Ba75-173` 6.05 3.80 0.265 1.13 6.1 |
| `Abbey` 5.47 3.48 0.246 1.06 3.3 |
| `Ascot` 3.09 2.62 0.233 0.90 3.2 |
| `Coventry` 4.86 3.23 0.247 0.97 3.7 |
| LSD (.05) 0.97 0.36 0.037 0.153 1.2 |
| *Rating 0-9; 0 = none; 9 = many hairs. |
| TABLE 5 |
| Morphological Comparisons of Spikelets and Florets of |
| `Ba75-173` and Other Kentucky Bluegrass Varieties in the |
| Greenhouse at Marysville, Ohio. |
| Spikelets No. of Florets |
| Lowest Whorl Third Whorl per Spikelet |
| Length Width Length Width Lowest Third |
| Variety (mm) (mm) (mm) (mm) Whorl Whorl |
| `Ba75-173` 4.38 1.96 4.55 2.01 2.7 3.1 |
| `Abbey` 4.50 1.88 4.78 2.04 2.0 3.4 |
| `Ascot` 4.45 1.67 4.58 1.97 1.7 2.7 |
| `Coventry` 4.70 1.93 4.69 1.77 3.2 3.5 |
| LSD (.05) 0.52 0.30 0.49 0.38 0.6 0.6 |
| TABLE 5 |
| Morphological Comparisons of Spikelets and Florets of |
| `Ba75-173` and Other Kentucky Bluegrass Varieties in the |
| Greenhouse at Marysville, Ohio. |
| Spikelets No. of Florets |
| Lowest Whorl Third Whorl per Spikelet |
| Length Width Length Width Lowest Third |
| Variety (mm) (mm) (mm) (mm) Whorl Whorl |
| `Ba75-173` 4.38 1.96 4.55 2.01 2.7 3.1 |
| `Abbey` 4.50 1.88 4.78 2.04 2.0 3.4 |
| `Ascot` 4.45 1.67 4.58 1.97 1.7 2.7 |
| `Coventry` 4.70 1.93 4.69 1.77 3.2 3.5 |
| LSD (.05) 0.52 0.30 0.49 0.38 0.6 0.6 |
| TABLE 7 |
| Morphological Comparisons of the Level of Hairs on the |
| Vegetative Leaves of `Ba75-173` and Other Kentucky Bluegrass |
| Varieties in the Greenhouse at Marysville, Ohio.* |
| Leaf Sheath Ligule Upper Collar Leaf Sheath |
| Variety Margin Margin Margin Dorsal |
| `Ba75-173` 0.5 3.3 3.3 1.4 |
| `Abbey` 0.1 3.0 3.0 2.1 |
| `Ascot` 0.7 2.6 4.8 0.8 |
| `Coventry` 1.2 3.5 3.6 1.4 |
| LSD (.05) 0.6 0.5 0.7 0.7 |
| *Rating Scale: 0-9; 0 = None; 9 = Many hairs. |
The seed of `Ba75-173` was conditioned by removing most of the extraneous
materials that may have been harvested with the seed, such as small pieces
of plant stems and leaves, soil particles, seed of other plants, hair
attached to the seed and the like. This conditioned seed of `Ba75-173`
averages 3.20 mm in length, and 0.87 mm in width. `Ba75-173` has about
860,930 seeds per pound.
Comparisons of `Ba75-173` with other Kentucky bluegrass varieties in terms
of seed numbers per pound and other seed characteristics are shown in
Tables 8-9 as follows:
| TABLE 8 |
| Morphological Comparisons of Conditioned Seed of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties.* |
| Length Width |
| Variety (mm) (mm) |
| `Ba75-173` 3.20 0.88 |
| `Abbey` 2.99 0.84 |
| `Ascot` 3.19 0.82 |
| `Coventry` 2.62 0.77 |
| LSD (.05) 0.16 0.06 |
| *Rating Scale 0-9; 9 = most hairs |
| TABLE 8 |
| Morphological Comparisons of Conditioned Seed of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties.* |
| Length Width |
| Variety (mm) (mm) |
| `Ba75-173` 3.20 0.88 |
| `Abbey` 2.99 0.84 |
| `Ascot` 3.19 0.82 |
| `Coventry` 2.62 0.77 |
| LSD (.05) 0.16 0.06 |
| *Rating Scale 0-9; 9 = most hairs |
`Ba75-173` has performed well throughout the U.S. as exhibited by good turf
quality ratings in both the sun and shade in comparison with other
Kentucky bluegrass varieties. In addition, it has a medium to dark green
color which can be maintained throughout the growing season, good seedling
vigor making it very competitive with the weed Poa annua, and a high seed
yielding capacity.
With regard to a comparative analysis conducted for purposes of determining
color of `Ba75-173` plants relative to other Kentucky bluegrass varieties,
readings were taken of the vegetative color of `Ba75-173` during
mid-October 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 `Ba75-173` 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: `Ascot`--5 GY 4/4;
`Buckingham`--7.5 GY 4/4; `Nottingham`--5 GY 4/6; `Midnight`--7.5 GY 4/4;
`Abbey`--5 GY 4/6; and `Victa`--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 of lighter green, depending on such factors.
Comparisons of `Ba75-173` with other Kentucky bluegrass varieties for
quality, genetic color, fall color, winter color, turf density, leaf
texture, seedling vigor, level of Poa annua in seedling turf, and seed
yeild are set forth hereinafter in Tables 10-17 as follows:
| TABLE 10 |
| A Comparison of Quality of `Ba75-173` and Other Kentucky |
| Bluegrass Varieties as Affected by Environmental Conditions. |
| Variety Shade1 Sun2 |
| `Ba75-173` 5.1 5.7 |
| `Abbey` 4.2 5.7 |
| `Allure` 5.4 6.2 |
| `America` 5.3 6.4 |
| `Ascot` 5.4 5.9 |
| `Baron` 3.7 5.8 |
| `Blacksburg` 3.6 6.4 |
| `Challenger` 4.5 6.1 |
| `Chateau` 5.3 6.1 |
| `Classic` 4.7 5.8 |
| `Coventry` 5.1 6.1 |
| `Eclipse 4.6 6.1 |
| `Glade` 4.4 6.1 |
| `Goldrush` 4.7 5.8 |
| `Haga 5.0 6.0 |
| `Kenblue 3.2 4.6 |
| `Limousine` 4.8 6.2 |
| `Midnight` 3.2 6.6 |
| `Misty` 4.4 5.7 |
| `Raven` 3.4 5.8 |
| `Sebring` 4.7 6.0 |
| `Sidekick` 4.3 5.3 |
| `Unique` 5.3 6.4 |
| LSD (.05) 1.6 0.2 |
| Rating Scale: 0-9; 9 = Excellent. |
| 1 From Maryland |
| 2 From 28 different locations in the US |
| TABLE 11 |
| A Comparison of Quality of `Ba75-173` and Other Kentucky |
| Bluegrass Varieties as Affected by Climatic Regions in the U.S. |
| Transition Cool Cool |
| Variety Zone1 Humid2 Arid3 |
| `Ba75-173` 5.4 5.5 6.3 |
| `Abbey` 5.4 5.6 6.2 |
| `Allure` 5.6 5.9 6.2 |
| `America` 6.2 6.5 6.5 |
| `Ascot` 5.4 5.8 6.4 |
| `Baron` 5.3 5.6 6.6 |
| `Blacksburg` 5.9 6.1 6.6 |
| `Challenger` 5.6 5.7 6.5 |
| `Chateau` 5.6 6.0 6.2 |
| `Classic` 5.3 5.7 5.8 |
| `Coventry` 5.6 6.0 5.9 |
| `Eclipse` 5.8 6.0 6.1 |
| `Glade` 5.9 6.0 6.8 |
| `Goldrush` 5.7 5.4 6.3 |
| `Haga` 5.5 5.6 5.9 |
| `Kenblue` 4.4 4.6 5.0 |
| `Limousine` 5.3 6.2 5.9 |
| `Midnight` 6.6 6.4 7.3 |
| `Misty` 4.8 5.7 6.1 |
| `Raven` 5.4 5.7 6.1 |
| `Sebring` 5.4 5.9 6.4 |
| `Sidekick` 5.3 5.3 5.8 |
| `Unique` 6.5 6.3 6.7 |
| LSD VALUE 0.3 0.2 0.3 |
| Rating Scale: 0-9; 9 = Excellent. |
| 1 From 9 different locations in the U.S. |
| 2 From 3 different locations in the U.S. |
| 3 From 15 different locations in the U.S. |
| TABLE 12 |
| A Comparison of Genetic Color, Fall Color and Winter Color |
| of `Ba75-173` and Other Kentucky Bluegrass Varieties. |
| Genetic Fall Winter |
| Variety Color1 Color2 Color3 |
| `Ba75-173` 6.7 5.7 5.5 |
| `Abbey` 6.4 4.7 5.0 |
| `Allure` 6.2 4.0 4.3 |
| `America` 6.7 4.3 5.7 |
| `Ascot` 6.8 4.0 4.5 |
| `Baron` 6.6 4.7 5.2 |
| `Blacksburg` 7.1 5.3 5.7 |
| `Challenger` 6.7 4.7 6.2 |
| `Chateau` 6.1 4.7 5.0 |
| `Classic` 6.1 4.3 6.0 |
| `Coventry` 6.2 4.7 4.7 |
| `Eclipse` 6.4 4.3 5.3 |
| `Glade` 7.3 4.7 5.3 |
| `Goldrush` 6.5 4.3 4.8 |
| `Haga` 5.9 4.7 5.8 |
| `Kenblue` 5.5 3.7 5.3 |
| `Limousine` 5.7 4.0 4.3 |
| `Midnight` 7.7 5.3 5.7 |
| `Misty` 6.4 4.3 5.8 |
| `Raven` 6.5 5.0 4.5 |
| `Sebring` 7.4 4.3 5.8 |
| `Sidekick` 6.3 4.0 5.2 |
| `Unique` 6.4 4.3 6.3 |
| LSD VALUE 0.2 1.2 0.8 |
| Rating 1-9; 9 = Dark Green. |
| 1 From 24 different locations in the U.S. |
| 2 From 1 location in the U.S. |
| 3 From 2 different locations in the U.S. |
| TABLE 13 |
| A Comparison of Turf Density of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties. |
| Turf Density |
| Variety Spring1 Summer2 Fall3 |
| `Ba75-173` 6.9 6.8 6.9 |
| `Abbey` 6.8 6.7 6.7 |
| `Allure` 7.5 6.9 7.0 |
| `America` 7.0 7.0 7.3 |
| `Ascot` 7.2 6.8 7.1 |
| `Baron` 6.9 6.7 6.8 |
| `Blacksburg` 7.2 7.4 7.4 |
| `Challenger` 7.0 6.8 6.8 |
| `Chateau` 7.7 6.8 7.1 |
| `Classic` 7.1 6.4 6.7 |
| `Coventry` 7.4 6.8 6.8 |
| `Eclipse` 7.0 6.5 7.1 |
| `Glade` 7.1 7.2 7.1 |
| `Goldrush` 7.1 6.9 6.8 |
| `Haga` 7.2 6.6 6.9 |
| `Kenblue` 5.9 6.3 6.5 |
| `Limousine` 7.6 7.8 7.6 |
| `Midnight` 7.5 7.4 7.4 |
| `Misty` 7.0 6.8 7.1 |
| `Raven` 7.1 6.6 6.8 |
| `Sebring` 6.7 6.8 6.8 |
| `Sidekick` 6.8 6.4 6.5 |
| `Unique` 7.2 7.0 7.5 |
| LSD VALUE 0.5 0.3 0.4 |
| Density Rating 1-9; 9 = maximum density. |
| 1 From 8 different locations in the U.S. |
| 2 From 9 different locations in the U.S. |
| 3 From 12 different locations in the U.S. |
| TABLE 14 |
| A Comparison of Leaf Texture of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties. |
| Variety Leaf Texture1 |
| `Ba75-173` 5.5 |
| `Abbey` 5.5 |
| `Allure` 5.8 |
| `America` 6.7 |
| `Ascot` 6.0 |
| `Baron` 5.7 |
| `Blacksburg` 6.3 |
| `Challenger` 6.2 |
| `Chateau` 5.7 |
| `Classic` 6.2 |
| `Coventry` 5.6 |
| `Eclipse` 6.0 |
| `Glade` 6.5 |
| `Goldrush` 6.0 |
| `Haga` 6.4 |
| `Kenblue` 6.9 |
| `Limousine` 7.0 |
| `Midnight` 6.4 |
| `Misty` 5.2 |
| `Raven` 5.6 |
| `Sebring` 6.0 |
| `Sidekick` 5.1 |
| `Unique` 6.8 |
| LSD VALUE 0.3 |
| Texture Rating 1-9; 9 = fine texture. |
| 1 From 24 different locations in the U.S. |
| TABLE 15 |
| A Comparison of Seedling Vigor and Level of Poa annua in |
| New Seedlings of `Ba75-173` and Other Kentucky Bluegrass Varieties. |
| Seedling Poa Annua |
| Variety Vigor1 Level2 |
| `Ba75-173` 5.1 7.0 |
| `Abbey` 5.1 7.0 |
| `Allure` 4.9 5.3 |
| `America` 5.6 7.7 |
| `Ascot` 4.8 4.3 |
| `Baron` 5.2 7.0 |
| `Blacksburg` 5.1 6.7 |
| `Challenger` 5.0 5.0 |
| `Chateau` 5.2 5.3 |
| `Classic` 5.7 7.7 |
| `Coventry` 4.9 6.3 |
| `Eclipse` 4.8 5.0 |
| `Glade` 5.3 6.3 |
| `Goldrush` 4.9 6.0 |
| `Haga` 6.3 7.3 |
| `Kenblue` 6.4 7.7 |
| `Limousine` 5.1 6.0 |
| `Midnight` 5.1 6.0 |
| `Misty` 4.5 3.0 |
| `Raven` 5.2 6.3 |
| `Sebring` 5.0 4.7 |
| `Sidekick` 4.7 5.3 |
| `Unique` 5.3 6.3 |
| LSD VALUE 0.3 1.5 |
| Ratings: 1-9; 9 = better seedling vigor and less Poa annua. |
| 1 From 24 different locations in the U.S. |
| 2 From 1 location in the U.S. |
| TABLE 16 |
| A Comparison of Seed Yield (Pounds per Acre) of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties in Four (4) Tests |
| Conducted at Gervais, Oregon. |
| Test 1 Test 2 Test 3 Test 4 |
| Yield Yield Yield Yield |
| Variety (bs./A) (bs./A) (bs./A) (bs./A) |
| `Ba75-173` 809 868 350 209 |
| `Abbey` 516 848 483 249 |
| `Buckingham` 457 1071 555 328 |
| `Coventry` 480 429 111 268 |
| `Goldrush` 514 785 341 214 |
| `Midnight` 112 618 251 233 |
| `Misty` 913 890 291 220 |
| `Sidekick` 1196 982 673 638 |
| LSD (.05) 100 130 81 59 |
| TABLE 16 |
| A Comparison of Seed Yield (Pounds per Acre) of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties in Four (4) Tests |
| Conducted at Gervais, Oregon. |
| Test 1 Test 2 Test 3 Test 4 |
| Yield Yield Yield Yield |
| Variety (bs./A) (bs./A) (bs./A) (bs./A) |
| `Ba75-173` 809 868 350 209 |
| `Abbey` 516 848 483 249 |
| `Buckingham` 457 1071 555 328 |
| `Coventry` 480 429 111 268 |
| `Goldrush` 514 785 341 214 |
| `Midnight` 112 618 251 233 |
| `Misty` 913 890 291 220 |
| `Sidekick` 1196 982 673 638 |
| LSD (.05) 100 130 81 59 |
Turf diseases are one of the major causes of inconsistent and poor turf
performance. `Ba75-173` has been found to have a medium to high level of
resistance to melting out caused by Drechslera poae (formerly called
Helminthosporium vagans); a medium to high level of resistance to summer
patch caused by Magnaporthe poae, a medium to high level of resistance to
stem rust caused by Puccinia graminis, a medium to high level of
resistance to dollarspot caused by Sclerotinia homeocarpia, and a medium
to high level of resistance to grey snowmold caused by Typhula ssp.
Comparisons of disease incidence of `Ba75-173` as compared with other
Kentucky bluegrass varieties in regard to melting out, summer patch, stem
rust, dollarspot, and grey snowmold are presented in Table 18 as follows:
| TABLE 18 |
| A Comparison of Diseases of `Ba75-173` and |
| Other Kentucky Bluegrass Varieties. |
| Melting Summer Stem |
| Variety Out1 Patch2 Rust3 Dollarspot4 |
| Snowmold5 |
| `Ba75-173` 9.0 9.0 8.0 8.2 7.3 |
| `Abbey` 9.0 8.7 7.3 8.0 7.3 |
| `Allure` 7.0 8.3 5.7 6.8 7.0 |
| `America` 8.3 9.0 7.7 8.8 7.7 |
| `Ascot` 8.7 6.3 5.7 8.7 7.0 |
| `Baron` 9.0 7.0 7.3 7.9 6.7 |
| `Blacksburg` 6.3 9.0 7.7 7.3 6.0 |
| `Challenger` 9.0 8.7 6.7 7.6 8.0 |
| `Chateau` 8.0 7.3 7.3 6.1 7.3 |
| `Classic` 7.0 9.0 6.0 7.7 7.0 |
| `Coventry` 7.3 8.7 6.3 7.3 7.3 |
| `Eclipse` 9.0 9.0 6.7 7.7 7.3 |
| `Glade` 5.0 9.0 6.3 7.6 7.0 |
| `Goldrush` 9.0 8.0 6.3 8.2 7.7 |
| `Haga` 7.7 8.7 7.0 7.9 7.0 |
| `Kenblue` 1.3 6.7 3.7 6.7 6.7 |
| `Limousine` 9.0 9.0 7.0 6.4 7.3 |
| `Midnight` 9.0 8.3 7.7 8.2 7.0 |
| `Misty` 7.3 8.0 5.3 8.3 7.3 |
| `Raven` 9.0 8.7 4.7 7.2 7.0 |
| `Sebring` 9.0 9.0 5.7 7.0 7.7 |
| `Sidekick` 7.0 9.0 6.0 8.6 6.3 |
| `Unique` 8.7 9.0 7.7 8.4 7.3 |
| LSD VALUE 1.3 1.6 3.4 1.0 1.5 |
| Rating Scale: 1-9; 9 = No Disease. |
| 1 From Pennsylvania |
| 2 From Indiana |
| 3 From North Carolina |
| 4 From 3 locations in the USA |
| 5 From Quebec |
Meier, Virgil D., Burr, Jay B.
| Patent |
Priority |
Assignee |
Title |
| Patent |
Priority |
Assignee |
Title |
| PP10080, |
Jul 15 1996 |
OMS Investments, Inc. |
`BA 77 700` Kentucky Bluegrass |
| PP10081, |
Jul 15 1996 |
OMS Investments, Inc. |
`BA 78-165` Kentucky Bluegrass |
| PP10384, |
Dec 10 1996 |
OMS Investments, Inc. |
Ba 78-258 Kentucky Bluegrass |
| 3150, |
|
|
|
| 3156, |
|
|
|
| 3186, |
|
|
|
| PP4336, |
Dec 27 1977 |
The O. M. Scott & Sons Company |
Kentucky bluegrass |
| PP6280, |
Sep 19 1986 |
The O.M. Scott & Sons Company |
Kentucky bluegrass |
| PP6537, |
Mar 17 1987 |
The O. M. Scott & Sons Company |
Kentucky bluegrass `Ba 72-492` |
| PP6538, |
Mar 17 1987 |
The O.M. Scott & Sons Company |
Kentucky bluegrass--BA 70-139 |
| PP6585, |
May 29 1987 |
The O. M. Scott & Sons Company |
Kentucky bluegrass |
| PP7831, |
Jun 22 1990 |
The O.M. Scott & Sons Company, Inc. |
Ba 73-626 Kentucky Bluegrass |
| PP8490, |
Jan 14 1992 |
The O. M. Scott & Sons Company |
BA 73-540 Kentucky Bluegrass |
| PP9036, |
Sep 23 1993 |
The O. M. Scott and Sons Company |
BA 73-366 Kentucky bluegrass |
| PP9209, |
Sep 19 1994 |
OMS Investments, Inc. |
`BA 73-381` Kentucky bluegrass |
| PP9611, |
May 30 1995 |
OMS Investments, Inc. |
`Ba 69-82 ` Kentucky Bluegrass |
| PP9848, |
Sep 25 1995 |
OMS Investments, Inc. |
`BA-74-114` Kentucky Bluegrass |
| PP9977, |
Feb 23 1996 |
OMS Investments, Inc. |
Ba 77-279 Kentucky Bluegrass |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a