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; U.S. Plant Pat. No. 4,336 which issued on Nov. 28, 1978; U.S. Plant
Pat. No. 6,280 which issued on Sep. 6, 1988; U.S. Plant Pat. No. 6,537
which issued on Jan. 17, 1989; U.S. Plant Pat. No. 6,538 which issued on
Jan. 17, 1989; 6,585 which issued on Feb. 7, 1989; U.S. Plant Pat. No.
7,831 which issued on Mar. 17, 1992 and U.S. Plant patent application Ser.
No. 792,173, which was filed on Nov. 14, 1991, now abandoned.
The present invention relates to a new and improved variety of Kentucky
bluegrass, Poa pratensis, that has been designated Ba 73-540.
Ba 73-540 plant material originated by crossing two Kentucky bluegrass
plants maintained in the O. M. Scott & Sons Company plant nursery. The
female parent plant for the present variety was a Kentucky bluegrass
locally identified under the designation Bd 68-486 and the male parent
plant was a Kentucky bluegrass locally identified under the designation Bd
64-36-1 in the plant nursery. Neither the Bd 68-486 plant nore the Bd
64-36-1 plant has been released as a commercial variety to date. As a
result of this breeding, a distinct variety was produced and asexually
propagated by rhizomes, tillers and disseminules. Seed of Ba 73-540 was
produced first at Marysville, Ohio and later at Gervais, Oreg. This seed
was used to plant turf performance evaluation trails and later seed
production fields.
Asexual production of Ba 73-540 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 73-540 is 100% based upon examining seedling
characteristics of approximately 130 to 140 seedlings from four different
crop years in a growth chamber.
Ba 73-540 has a number of highly desirable characteristics including a good
level of resistance to Drechslera spp. (formerly called Helminthosporium
spp.) that causes leaf spot, melting out and crown rot; Sclerotinia
homoeocarpa that causes dollar spot; Puccinia spp. that causes several
types of rust infections and Erysiphe graminis that causes powdery mildew.
Ba 73-540 has an attractive leafy turf type growth habit; moderately wide
leaf blades; an 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 National Turfgrass Evaluation Tests sponsored by the U.S.
Department of Agriculture and conducted throughout the U.S.A. and Canada.
Ba 73-540 has a medium seed yield potential in the bluegrass seed
production region of the U.S.A.
In comparison with a number of other Kentucky bluegrasses, Ba 73-540 has a
small seed, high seed count, the shortest and narrowest panicle, a short,
narrow and thin flag leaf, a short and narrow peduncle, the shortest culm
and the shortest and narrowest leaf blade when Ba 73-540 and the other
Kentucky bluegrasses are grown as single, spaced plants without
competition to the flowering stage. Under close mowing as practiced under
lawn maintenance conditions, Ba 73-540 has a leaf blade coarser than a
number of other Kentucky bluegrasses which all were treated as uniformly
as possible before and during data collection. Thus, in relation to other
Kentucky bluegrasses, Ba 73-540 has narrower leaf blades as a mature plant
under non-mowed and non-competitive conditions and has coarser leaf blades
under mowed and highly competitive conditions. In addition, Ba 73-45
exhibits a high degree of resistance to powdery mildew and various rust
diseases. Ba 73-540 is a medium seed yielder.
FIG. 1 hows a Ba 73-540 Kentucky bluegrass plant in the vegetative stage
including the extensive root and rhizome system;
FIG. 2 shows a Ba 73-540 Kentucky bluegrass panicle;
FIG. 3 shows Ba 73-540 Kentucky bluegrass seed; and
FIG. 4 shows a Ba 73-540 Kentucky bluegrass plant shortly after completing
anthesis.
Ba 73-540 Kentucky bluegrass (Poa pratensis L.) is perennial with creeping
rhizomes forming a dense turf. When plants overwinter in the field with
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 416 mm
in length with an average of 2.3 nodes per culm. The uppermost internode
averages 10.1 cm, and the peduncle averages 11.4 cm in length, and 0.565
mm in width. The flag leaf averages 4.1 cm in length, 2.8 mm in width and
0.012 mm in thickness. The panicle has an average length of 6.3 cm, width
of 3.6 cm, and 4.6 whorls. The lowest whorl has an average of 3.5 branches
and the third whorl from the bottom of the panicle has an average of 2.2
branches. The average spikelet at the tip of a branch in the lowest whorl
is 5.3 mm in length and has 4.4 florets with an outer glume of 3.0 mm and
an inner glume of 3.4 mm in length. A similar spikelet from the third
whorl from the bottom of the panicle is 5.2 mm in length and has 4.4
florets with an outer glume of 3.1 mm and an inner glume of 3.4 mm in
length. After the seed has been conditioned, the lemma has a generally
smooth keel with occasional short hairs and a few long fine hairs at the
base. The seed of Ba 73-540 is 2.80 mm in length and 0.78 mm in width with
approximately 1,357,914 seeds per pound. Comparisons of Ba 73-540 with
other varieties in terms of seed dimensions and on seed numbers per pound
are shown in Tables 1 and 2 as follows:
| TABLE 1 |
| ______________________________________ |
| Seed Measurements of Ba 73-540 and Other Bluegrass |
| Varieties After Conditioning. |
| Length Width |
| Variety (mm) (mm) |
| ______________________________________ |
| Ba 73-540 2.80 0.78 |
| Kelly 2.98 0.80 |
| Abbey 3.18 0.88 |
| Coventry 2.86 0.78 |
| Estate 2.53 0.76 |
| Chateau 2.77 0.80 |
| Baron 3.07 0.86 |
| Bristol 2.73 0.80 |
| Marquis 2.84 0.78 |
| Nassau 2.96 0.78 |
| Newport 2.76 0.71 |
| Park 3.04 0.72 |
| Ram I 3.51 0.84 |
| Victa 3.20 0.86 |
| LSD (.05) 0.19 0.06 |
| ______________________________________ |
| TABLE 2 |
| ______________________________________ |
| Comparison of Seed Numbers Per Pound of Ba 73-540 and |
| Other Bluegrass Varieties After Conditioning. |
| Number of Seeds |
| Per Pound |
| ______________________________________ |
| Ba 73-540 1,357,914 |
| Kelly 921,166 |
| Abbey 1,003,037 |
| Coventry 1,246,200 |
| Estate 1,275,740 |
| Chateau 1,300,105 |
| Adelphi 1,383,976 |
| America 1,659,824 |
| Gnome 1,017,641 |
| Baron 1,051,693 |
| Birka 1,223,530 |
| Bonnieblue 1,135,303 |
| Bristol 1,270,821 |
| Eclipse 1,335,668 |
| Fylking 1,130,000 |
| Glade 1,108,441 |
| Marquis 1,054,642 |
| Kenblue 1,463,923 |
| Merit 1,109,728 |
| Nassau 1,127,130 |
| Newport 1,226,481 |
| Park 1,248,349 |
| Sydsport 1,355,644 |
| Vantage 1,555,303 |
| Victa 1,038,298 |
| Windsor 1,520,885 |
| ______________________________________ |
Since environmental conditions such as soil and climate may influence
morphological characteristics to some extent, comparisons of morphological
characteristics of Ba 73-450 are made with other Kentucky bluegrass
varieties in Tables 3-10.
| TABLE 3 |
| ______________________________________ |
| Morphological Comparison of Panicles of Ba 73-540 and |
| Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Number |
| of Number of |
| Panicle Panicle Panicle Whorls Branches |
| Nod- Length Width Per Lower Third |
| Variety ding* (cm) (cm) Panicle |
| Whorl Whorl |
| ______________________________________ |
| Ba 73-540 |
| 2.0 6.3 3.6 4.6 3.5 2.2 |
| Kelly 1.3 9.7 6.0 5.5 4.5 3.4 |
| Abbey 1.4 7.6 4.2 5.2 4.0 2.7 |
| Baron 1.0 7.8 4.1 5.2 3.8 2.5 |
| Bristol 2.0 9.7 5.0 5.0 3.3 2.7 |
| Chateau 2.0 6.8 3.8 5.0 4.0 2.4 |
| Coventry |
| 2.0 6.7 3.7 4.8 3.8 2.7 |
| Estate 1.2 7.5 4.2 5.5 4.0 3.0 |
| Marquis 1.7 7.8 4.5 5.2 4.1 3.1 |
| Nassau 2.0 10.0 6.0 5.0 3.0 2.0 |
| Newport 2.0 10.3 4.4 4.5 2.3 2.3 |
| Park 1.6 9.0 3.7 4.0 4.3 3.7 |
| Ram I 2.0 9.0 4.7 4.0 2.5 2.0 |
| Victa 1.2 7.5 4.1 5.4 4.4 3.4 |
| LSD (.05) |
| 0.5 1.6 1.0 0.8 0.7 0.8 |
| ______________________________________ |
| *Panicle nodding rated: 1 = erect, 2 = nodding |
| TABLE 4 |
| ______________________________________ |
| Morphological Comparison of Spikelets of Ba 73-540 |
| and Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Spikelet Number of Florets |
| Length (mm) per Spikelet |
| Lowest Third Lowest |
| Third |
| Variety Whorl Whorl Whorl Whorl |
| ______________________________________ |
| Ba 73-540 5.3 5.2 4.4 4.4 |
| Kelly 5.8 5.6 4.4 4.1 |
| Abbey 5.1 5.0 3.9 3.8 |
| Baron 5.0 5.0 3.7 3.8 |
| Bristol 6.2 6.0 5.7 5.3 |
| Chateau 5.1 5.0 4.2 3.9 |
| Coventry 5.2 5.2 4.2 4.0 |
| Estate 5.2 5.0 4.2 4.2 |
| Marquis 5.4 5.2 4.1 3.9 |
| Nassau 4.6 4.6 4.5 4.5 |
| Newport 5.3 5.2 5.2 5.2 |
| Park 6.5 6.7 5.2 4.7 |
| Ram I 4.7 5.2 5.2 5.5 |
| Victa 5.2 5.0 3.8 3.8 |
| LSD (.05) 0.9 0.8 1.1 1.0 |
| ______________________________________ |
| TABLE 5 |
| ______________________________________ |
| Morphological Comparison of Glumes of Ba 73-540 and |
| Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Glume Length (mm) |
| Outer Inner |
| Lowest Third Lowest |
| Third |
| Variety Whorl Whorl Whorl Whorl |
| ______________________________________ |
| Ba 73-540 3.0 3.1 3.4 3.4 |
| Kelly 3.2 3.3 3.7 3.6 |
| Abbey 2.9 2.9 3.3 3.3 |
| Baron 2.9 2.8 3.4 3.3 |
| Bristol 3.4 3.3 3.7 3.9 |
| Chateau 3.1 3.1 3.4 3.4 |
| Coventry 3.2 3.1 3.5 3.5 |
| Estate 2.9 3.0 3.3 3.3 |
| Marquis 2.9 2.8 3.3 3.2 |
| Nassau 2.3 2.4 2.7 2.7 |
| Newport 2.6 2.5 2.9 2.9 |
| Park 3.0 3.2 3.5 3.7 |
| Ram I 2.6 2.4 2.9 2.7 |
| Victa 2.8 3.0 3.3 3.3 |
| LSD (.05) 0.5 0.4 0.4 0.4 |
| ______________________________________ |
| TABLE 6 |
| ______________________________________ |
| Morphological Comparison of Flag Leaves of Ba 73-540 |
| and Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Flag Leaf Flag Leaf Flag Leaf |
| Length Width Thickness |
| Variety (cm) (mm) (mm) |
| ______________________________________ |
| Ba 73-540 4.1 2.8 0.102 |
| Kelly 5.8 4.2 0.119 |
| Abbey 4.3 3.3 0.107 |
| Baron 4.5 3.2 0.119 |
| Bristol 5.5 3.4 0.127 |
| Chateau 4.1 3.2 0.111 |
| Coventry 4.7 3.2 0.112 |
| Estate 5.2 3.6 0.117 |
| Marquis 4.7 3.6 0.112 |
| Nassau 6.2 3.1 0.127 |
| Newport 6.1 3.5 0.135 |
| Park 4.2 2.6 0.110 |
| Ram I 4.7 3.1 0.127 |
| Victa 5.9 4.0 0.124 |
| LSD (.05) 1.8 0.6 0.013 |
| ______________________________________ |
| TABLE 7 |
| ______________________________________ |
| Morphological Comparison of Peduncles, Culms, and |
| Internodes of Ba 73-540 and Other Bluegrass Varieties |
| in the Greenhouse at Marysville, Ohio. |
| Number Top |
| Peduncle Peduncle Culm of Nodes |
| Internode |
| Length Width Length |
| Per Length |
| Variety (cm) (mm) (mm) Culm (cm) |
| ______________________________________ |
| Ba 73-540 |
| 11.4 0.565 416 2.3 10.1 |
| Kelly 12.3 0.772 514 2.3 12.4 |
| Abbey 10.6 0.564 421 2.7 9.3 |
| Baron 12.7 0.555 482 2.5 10.1 |
| Bristol 15.0 0.677 522 2.7 11.3 |
| Chateau 12.9 0.654 439 2.7 9.8 |
| Coventry |
| 13.2 0.607 435 2.7 10.2 |
| Estate 12.6 0.552 486 2.2 10.5 |
| Marquis 11.4 0.667 434 2.6 9.5 |
| Nassau 8.0 0.546 450 2.5 11.2 |
| Newport 18.0 0.567 547 2.3 11.2 |
| Park 14.3 0.779 578 3.0 13.0 |
| Ram I 18.5 0.622 527 3.0 10.2 |
| Victa 12.2 0.716 474 2.4 10.6 |
| LSD (.05) |
| 3.7 0.018 79 0.6 2.1 |
| ______________________________________ |
| TABLE 8 |
| ______________________________________ |
| Morphological Comparison of Leaves of Ba 73-540 and |
| Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Leaf |
| Ligule Leaf Leaf Angle |
| Length Length Width (Degrees |
| Variety (mm) (mm) (mm) From Horizontal) |
| ______________________________________ |
| Ba 73-540 |
| 0.22 186 3.8 50 |
| Kelly 0.29 215 4.4 46 |
| Abbey 0.23 218 3.9 56 |
| Baron 0.30 313 4.4 63 |
| Bristol 0.30 253 4.3 37 |
| Chateau 0.25 204 4.1 50 |
| Coventry |
| 0.26 218 4.1 55 |
| Estate 0.28 239 4.4 52 |
| Marquis 0.31 215 4.2 57 |
| Nassau 0.22 226 3.5 39 |
| Newport 0.22 251 4.1 50 |
| Park 0.33 329 4.2 44 |
| Ram I 0.18 188 3.7 40 |
| Victa 0.28 235 4.3 52 |
| LSD (.05) |
| 0.11 49 0.6 10 |
| ______________________________________ |
| TABLE 9 |
| ______________________________________ |
| Morphological Comparision of Leaf Hairs of Ba 73-540 |
| and Other Bluegrass Varieties in the Greenhouse at |
| Marysville, Ohio. |
| Hairs Around |
| Ligule on |
| Upper Surface Hairs on Hairs on |
| Variety of the Leaf (a) |
| Collar (a) |
| Ligule (b) |
| ______________________________________ |
| Ba 73-540 |
| 1.0 3.2 2.1 |
| Kelly 1.2 4.2 3.6 |
| Abbey 1.0 3.4 2.2 |
| Baron 1.0 5.0 4.0 |
| Bristol 1.3 4.7 4.3 |
| Chateau 1.0 3.5 2.7 |
| Coventry |
| 1.0 3.5 1.5 |
| Estate 1.0 3.2 1.3 |
| Marquis 1.2 4.4 2.6 |
| Nassau 2.7 5.0 1.0 |
| Newport 1.0 4.0 0.8 |
| Park 1.0 1.7 0.0 |
| Ram I 1.0 3.7 0.3 |
| Victa 1.0 3.3 2.2 |
| LSD (.05) |
| 0.3 1.4 1.8 |
| ______________________________________ |
| (a) Hairs around ligule and on collar rated 1-5: 1 = none, 5 = many |
| (b) Hairs on ligule rated 0-5: 0 = none, 5 = many |
| TABLE 10 |
| ______________________________________ |
| Morphological Comparisons of Ba 73-540 and Other |
| Bluegrass Varieties Grown as Unmowed Spaced Plants |
| in the Field at Marysville, Ohio. |
| Mature |
| Plant Height (a) |
| Panicle Density (b) |
| Maturity (c) |
| ______________________________________ |
| Ba 73-540 |
| 54 7 8 |
| Kelly 50 5 8 |
| Abbey 49 5 7 |
| Baron 44 5 9 |
| Chateau |
| 49 5 7 |
| Coventry |
| 48 5 7 |
| Marquis |
| 47 5 9 |
| Estate 49 5 7 |
| Nassau 46 6 9 |
| Bristol |
| 54 3 8 |
| Merit 61 5 9 |
| Glade 49 2 9 |
| Ram I 49 3 7 |
| Victa 54 6 8 |
| ______________________________________ |
| Ratings: |
| (a) Mature Plant Height (cm) includes panicle |
| (b) Panicle Density 1-10, 10 = high panicle density |
| (c) Maturity 1-9, 9 = most mature |
No discernible differences were noted in flower parts and seed coloration
other than those characteristics listed in the above tables.
Ba 73-540 has performed well in regions throughout the U.S.A. and Canada,
as exhibited by high turf quality ratings in many different locations in
comparison to other varieties. In addition, Ba 73-450 has a pleasant
medium green color which can be maintained throughout the growing season
and good winter color. Comparisons of Ba 73-540 with other varieties for
quality, genetic color and winter color are set forth in Tables 11-13
hereinafter. According to comparisons with the Munsell Book of Colors
during mid-June, the color of Ba 73450 leaf blades is in the range of 5 GY
4/4 to 5 GY 4/8 to 7/5 GY 4/4. During the same time period the color of
similar leaf blades of several other Kentucky bluegrass varieties--Gnome,
Midnight, Bristol and Victa--fall in the same range and as a result were
indistinguishable based upon use of this color dictionary. Plant age, time
of year, management practices of fertilization, irrigation and mowing also
influence this color range. Additional comparisons for leaf texture, and
spring, summer and fall density, are presented in Tables 14-17.
| TABLE 11 |
| ______________________________________ |
| Comparison of Turfgrass Quality of Ba 73-540 and |
| Other Kentucky Bluegrass Varieties at various |
| Locations Over a Four Year Period in the U.S.A. and Canada. |
| Turfgrass Quality - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 3 Year 4 |
| ______________________________________ |
| Ba 73-540 5.8 5.9 6.0 5.8 |
| Abbey 5.6 5.7 5.9 5.7 |
| Able I 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 |
| Aquila 5.4 5.6 5.9 5.7 |
| A-34 5.6 5.9 6.0 6.1 |
| Aspen 5.6 5.7 6.0 6.2 |
| Asset 6.0 5.9 6.2 6.2 |
| Baron 5.8 5.6 5.9 5.8 |
| Barzan 5.0 5.2 5.4 5.4 |
| Bristol 5.7 6.0 6.1 6.0 |
| Challenger |
| 5.8 5.9 6.0 5.9 |
| Chateau 6.0 5.8 6.0 6.0 |
| Cheri 5.8 5.7 6.1 5.9 |
| 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 |
| Julia 5.7 5.8 5.9 5.7 |
| Kelly 5.6 5.7 5.9 5.8 |
| Kenblue 5.0 4.7 5.0 5.2 |
| Liberty 5.7 5.7 5.8 5.7 |
| 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 |
| Mystic 5.4 5.4 5.8 6.0 |
| Nassau 5.6 5.7 5.8 5.5 |
| Parade 5.7 5.7 5.9 5.8 |
| Ram I 5.7 5.6 5.9 5.8 |
| Rugby 6.0 5.8 5.9 5.9 |
| Sydsport 5.8 5.8 6.0 5.9 |
| Victa 5.8 5.7 5.8 5.8 |
| Wabash 5.7 5.4 5.8 5.9 |
| Welcome 5.3 5.5 5.7 5.5 |
| LSD 0.05 0.2 0.2 0.2 0.2 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = ideal turf |
| TABLE 12 |
| ______________________________________ |
| Comparison of Genetic Color of Ba 73-540 and Other |
| Kentucky Bluegrass Varieties at Various Locations |
| Over a Four Year Period in the U.S.A. and Canada. |
| Genetic Color - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 2 Year 2 |
| ______________________________________ |
| 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 |
| Aquila 6.5 6.0 6.6 6.3 |
| A-34 5.7 5.6 5.7 5.7 |
| Aspen 7.1 6.4 6.7 6.5 |
| Asset 6.7 6.3 6.3 6.4 |
| Baron 6.8 6.5 6.9 6.8 |
| Barzan 6.5 6.1 6.6 6.3 |
| Bristol 7.3 7.1 6.6 6.6 |
| Challenger |
| 7.2 6.9 6.8 6.7 |
| Chateau 6.5 6.0 6.2 6.5 |
| Cheri 6.6 5.9 6.3 6.3 |
| 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 5.7 |
| 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 |
| Julia 6.4 6.3 6.7 6.3 |
| Kelly 6.7 6.5 6.9 6.5 |
| Kenblue 5.2 5.2 5.5 6.0 |
| Liberty 6.5 6.5 6.4 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 |
| Mystic 5.9 5.6 6.3 6.0 |
| Nassau 7.1 6.7 6.9 6.8 |
| Parade 5.9 5.5 6.0 6.1 |
| Ram I 6.9 6.6 6.9 6.6 |
| Rugby 6.2 5.4 6.1 5.8 |
| Sydsport 6.5 6.1 6.2 6.2 |
| Victa 6.7 6.3 6.7 6.5 |
| Wabash 6.0 5.1 5.7 5.3 |
| Welcome 6.1 6.0 6.1 6.4 |
| LSD (.05) |
| 0.4 0.4 0.4 0.4 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = dark green |
| TABLE 13 |
| ______________________________________ |
| Comparison of Winter Color of Ba 73-540 and Other |
| Kentucky Bluegrass Varieties in the U.S.A. and Canada. |
| Winter Color - Annual Mean Values (a) |
| Wichita Agassiz |
| Kansas British Columbia |
| Variety Test Location |
| Test Location |
| ______________________________________ |
| Ba 73-540 5.0 5.0 |
| Abbey 3.0 4.7 |
| Able I 5.7 4.0 |
| Amazon 4.0 8.7 |
| America 4.7 4.0 |
| Aquila 3.0 4.0 |
| A-34 4.7 4.3 |
| Aspen 4.7 4.0 |
| Asset 3.7 4.3 |
| Baron 3.3 4.7 |
| Barzon 4.7 5.0 |
| Bristol 5.7 5.0 |
| Challenger |
| 5.0 4.0 |
| Chateau 5.0 5.0 |
| Cheri 4.3 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 |
| Julia 5.0 5.0 |
| Kenblue 3.0 3.0 |
| Liberty 5.0 -- |
| Merion 3.0 4.0 |
| Merit 3.3 5.0 |
| Midnight 4.3 4.7 |
| Monopoly 3.7 4.7 |
| Mystic 4.0 2.0 |
| Nassau 5.7 5.0 |
| Parade 5.3 4.0 |
| Ram I 5.0 4.7 |
| Rugby 4.7 4.3 |
| Sydsport 4.3 5.0 |
| Victa 3.7 5.0 |
| Wabash 4.7 3.3 |
| Welcome 4.3 5.0 |
| LSD (.05) 1.0 0.6 |
| ______________________________________ |
| (a) Rating Scale: 1-9: 9 = complete color retention. |
| TABLE 14 |
| ______________________________________ |
| Comparison of Leaf Texture of Ba 73-540 and Other |
| Kentucky Bluegrass Varieties at Various Locations |
| Over A Four Year Period in the U.S.A. and Canada. |
| Leaf Texture - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 3 Year 4 |
| ______________________________________ |
| Ba 73-540 5.8 5.6 5.3 4.8 |
| A-34 6.4 6.9 5.7 5.2 |
| Abbey 6.3 6.3 5.7 5.2 |
| Able I 7.1 7.3 6.0 6.0 |
| Amazon 7.5 7.2 6.3 5.8 |
| America 7.1 7.2 6.0 6.7 |
| Aquila 6.9 6.9 6.0 6.3 |
| Aspen 6.6 6.9 5.7 5.8 |
| Asset 6.8 6.7 6.0 6.2 |
| Baron 6.8 6.1 6.0 5.8 |
| Barzan 6.1 6.7 6.0 5.7 |
| Bristol 6.7 6.3 5.0 5.5 |
| Challenger |
| 6.8 6.7 5.7 5.2 |
| Chateau 6.1 6.0 5.7 4.8 |
| Cheri 6.2 6.1 5.7 4.7 |
| Classic 6.6 7.0 6.0 6.0 |
| Coventry 5.9 5.7 5.3 4.7 |
| Eclipse 6.4 6.5 6.0 6.3 |
| Estate 6.3 5.9 5.7 4.8 |
| Georgetown |
| 6.8 6.8 5.3 6.0 |
| Glade 6.8 6.7 6.0 5.7 |
| Gnome 6.1 6.2 5.3 5.2 |
| Haga 6.7 7.1 6.0 6.2 |
| Julia 6.7 6.3 6.0 5.8 |
| Kelly 6.4 5.7 5.3 5.0 |
| Kenblue 7.8 7.3 6.7 7.7 |
| Liberty 6.8 6.6 -- 5.2 |
| Marquis 6.1 5.7 5.3 5.3 |
| Merion 6.7 6.8 6.0 5.7 |
| Merit 6.3 6.1 6.0 5.2 |
| Midnight 7.3 6.7 6.0 4.8 |
| Monopoly 7.1 6.8 6.0 6.3 |
| Mystic 7.4 7.5 7.3 7.8 |
| Nassau 6.6 6.5 5.0 5.3 |
| Parade 7.1 7.0 6.0 6.3 |
| Ram I 7.3 7.1 6.3 4.8 |
| Rugby 6.8 6.7 6.0 6.2 |
| Sydsport 5.9 5.8 6.0 5.0 |
| Victa 6.3 6.0 5.7 5.3 |
| Wabash 7.1 7.2 6.3 7.7 |
| Welcome 7.5 7.1 6.0 7.2 |
| LSD 0.05 0.5 0.5 0.6 0.7 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = very fine |
| TABLE 15 |
| ______________________________________ |
| Comparison of Spring Density of Ba 73-540 and Other |
| Kentucky Bluegras Varieties at Various Locations in |
| the U.S.A. and Canada Over a Three Year Period. |
| Spring Density - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 3 |
| ______________________________________ |
| Ba 73-540 6.3 6.5 7.6 |
| Abbey 6.3 5.8 6.8 |
| Able I 5.4 5.8 7.4 |
| Amazon 6.7 6.7 6.7 |
| America 7.0 6.2 7.1 |
| Aquilla 5.9 6.5 6.6 |
| A-34 6.6 5.7 7.3 |
| Aspen 5.7 5.5 7.4 |
| Asset 6.0 7.5 7.7 |
| Baron 6.1 6.3 6.8 |
| Barzan 5.3 6.0 6.5 |
| Bristol 5.6 5.3 6.9 |
| Challenger 6.4 6.0 6.9 |
| Chateau 6.6 6.7 7.3 |
| Cheri 6.3 7.2 7.4 |
| Classic 6.9 5.5 7.2 |
| Coventry 6.7 6.5 7.1 |
| Eclipse 6.2 5.5 7.1 |
| Estate 6.1 6.3 7.2 |
| Georgetown 5.9 5.5 6.9 |
| Glade 5.9 6.8 7.3 |
| Gnome 5.8 6.0 6.3 |
| Haga 6.6 5.5 7.3 |
| Julia 6.0 6.5 7.4 |
| Kelly 6.1 6.3 6.7 |
| Kenblue 5.9 6.2 6.0 |
| Liberty 5.9 5.5 6.8 |
| Marquis 5.7 6.0 6.6 |
| Merion 6.3 6.3 7.3 |
| Merit 6.0 5.8 6.7 |
| Midnight 6.1 6.7 7.4 |
| Monopoly 6.0 6.2 7.0 |
| Mystic 6.3 6.7 6.9 |
| Nassau 5.7 6.2 6.6 |
| Parade 6.2 6.0 6.9 |
| Ram I 6.6 7.0 6.4 |
| Rugby 5.8 5.3 7.0 |
| Sydsport 6.3 6.3 7.2 |
| Victa 5.8 5.8 6.8 |
| Wabash 6.8 6.7 7.0 |
| Welcome 6.2 6.0 6.6 |
| LSD (.05) 0.8 0.8 0.7 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = maximum density |
| TABLE 16 |
| ______________________________________ |
| Comparison of Summer Density of Ba 73-540 and Other |
| Kentucky Bluegrass at Various Locations in Canada |
| and U.S.A. Over a Two Year Period |
| Summer Density - Annual Mean Values (a) |
| Variety Year 1 Year 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 |
| Aquilla 6.7 8.0 |
| A-34 6.8 7.8 |
| Aspen 6.2 7.5 |
| Asset 7.3 8.2 |
| Baron 6.3 7.7 |
| Barzan 5.3 7.3 |
| Bristol 6.4 7.8 |
| Challenger 6.2 7.5 |
| Chateau 7.3 8.3 |
| Cheri 7.0 8.0 |
| 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 |
| Julia 6.1 8.3 |
| Kelly 6.4 7.7 |
| Kenblue 6.1 7.2 |
| Liberty 5.5 7.5 |
| 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 |
| Mystic 7.3 8.0 |
| Nassau 6.1 7.0 |
| Parade 6.5 7.7 |
| Ram I 6.7 7.8 |
| Rugby 5.6 7.5 |
| Sydsport 6.8 8.0 |
| Victa 6.2 8.0 |
| Wabash 7.1 8.7 |
| Welcome 6.7 7.7 |
| LSD (.05) 0.8 0.7 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = maximum density |
| TABLE 17 |
| ______________________________________ |
| Comparison of Fall Density of Ba 73-540 and Other |
| Kentucky Bluegrass Varieties at Various Locations in |
| the U.S.A. and Canada Over a Three Year Period |
| Fall Density - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 3 |
| ______________________________________ |
| Ba 73-540 7.7 8.7 7.8 |
| Abbey 7.3 7.0 7.2 |
| Able I 6.7 8.2 7.4 |
| Amazon 7.0 9.0 7.8 |
| America 7.0 8.7 7.5 |
| Aquilla 6.7 7.5 7.8 |
| A-34 7.0 8.2 7.9 |
| Aspen 6.7 7.2 7.7 |
| Asset 6.0 8.7 7.5 |
| Baron 7.3 8.0 7.0 |
| Barzan 6.0 7.8 7.3 |
| Bristol 6.7 7.8 7.5 |
| Challenger 6.7 8.3 7.9 |
| Chateau 7.7 8.2 7.5 |
| Cheri 7.3 8.5 7.5 |
| Classic 7.3 8.2 7.5 |
| Coventry 7.3 9.0 7.3 |
| Eclipse 7.3 8.0 7.5 |
| Estate 6.3 8.0 7.4 |
| Georgetown 7.3 7.3 7.1 |
| Glade 6.0 7.8 7.6 |
| Gnome 7.0 7.7 7.1 |
| Haga 7.0 8.3 7.5 |
| Julia 7.0 8.0 7.4 |
| Kelly 7.3 7.2 7.0 |
| Kenblue 7.7 8.3 7.5 |
| Liberty 6.7 8.0 7.0 |
| Marquis 6.0 6.2 6.8 |
| Merion 6.3 7.3 7.3 |
| Merit 7.0 7.2 7.0 |
| Midnight 7.0 8.3 8.1 |
| Monopoly 6.7 7.5 7.1 |
| Mystic 7.3 8.8 7.8 |
| Nassau 6.3 6.5 7.3 |
| Parade 7.0 8.7 7.5 |
| Ram I 8.0 9.0 7.6 |
| Rugby 6.3 7.8 7.3 |
| Sydsport 7.0 8.7 7.5 |
| Victa 7.3 7.8 7.1 |
| Wabash 7.7 9.0 8.1 |
| Welcome 7.7 9.0 7.7 |
| LSD (.05) 1.4 0.5 0.6 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = maximum density |
Turf diseases are one of the major causes of inconsistent and poor turf
performance. Ba 73-540 has been found to have a high level of resistance
to a serious bluegrass disease known as leaf spot (also known as melting
out) caused by Drechslera poae (formerly called Helminthosporium vagans);
a medium to high level of resistance to several rust diseases caused by
Puccinia spp.; and a medium to high level of resistance to dollarspot
caused by Sclerotina homoeocarpa, to snow mold caused by Typhula incarnata
and to powdery mildew caused by Erysiphe graminis. Comparisons of disease
incidence of Ba 73-540 as compared with other varieties in regard to leaf
spot, rusts, dollarspot, snow mold and powdery mildew are presented in
Tables 18-23. Additional comparisons are presented in Tables 24-27 for
browning due to heat and drought stress, sod strength and seed yields.
| TABLE 18 |
| ______________________________________ |
| Comparison of Leaf Spot Disease Incidence of |
| Ba 73-540 and other Kentucky Bluegrass Varieties at |
| Various Locations in the U.S.A. and Canada Over a |
| Four Year Period |
| Leaf Spot - Annual Mean Values (a) |
| Variety Year 1 Year 2 Year 3 |
| Year 4 |
| ______________________________________ |
| Ba 73-540 5.9 5.7 6.7 6.0 |
| Abbey 4.6 5.8 6.0 5.3 |
| Able I 6.8 5.7 6.0 8.0 |
| Amazon 5.2 5.8 6.3 7.0 |
| America 5.7 6.5 6.0 6.3 |
| Aquilla 6.3 4.3 6.0 3.7 |
| A-34 6.3 5.7 5.8 6.3 |
| Aspen 6.6 6.3 6.0 6.3 |
| Asset 6.7 5.7 6.3 6.0 |
| Baron 6.0 6.5 6.0 5.3 |
| Barzan 6.4 5.3 6.3 1.3 |
| Bristol 7.9 6.5 5.7 5.3 |
| Challenger 7.2 6.7 6.3 5.0 |
| Chateau 6.4 6.2 6.3 6.3 |
| Cheri 5.7 5.7 6.7 4.7 |
| Classic 6.2 6.0 6.3 4.3 |
| Coventry 5.0 6.2 5.7 6.0 |
| Eclipse 7.4 7.0 6.7 7.7 |
| Estate 6.8 5.8 6.3 6.7 |
| Georgetown 6.7 6.5 5.7 4.3 |
| Glade 7.4 5.8 6.3 7.0 |
| Gnome 6.0 6.3 6.0 4.3 |
| Haga 6.7 6.0 6.0 4.7 |
| Julia 6.0 6.0 6.7 4.7 |
| Kelly 5.1 6.2 6.0 5.0 |
| Kenblue 4.8 2.0 5.3 1.0 |
| Liberty 6.9 6.3 -- 5.3 |
| Marquis 6.4 6.2 6.3 4.7 |
| Merion 6.2 6.3 6.7 3.7 |
| Merit 5.6 6.5 5.7 5.0 |
| Midnight 7.2 6.2 6.3 6.3 |
| Monopoly 5.6 5.7 6.7 3.3 |
| Mystic 5.6 5.0 5.7 5.7 |
| Nassau 6.6 6.2 6.3 5.3 |
| Parade 5.3 5.3 6.0 5.0 |
| Ram I 4.9 5.0 6.3 2.3 |
| Rugby 6.4 5.8 6.3 4.3 |
| Sydsport 6.7 6.5 6.3 6.3 |
| Victa 6.0 6.2 6.7 4.7 |
| Wabash 4.2 2.3 5.3 2.0 |
| Welcome 5.2 4.8 6.0 3.7 |
| LSD (.05) 1.0 0.9 0.9 1.6 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = no disease |
| TABLE 19 |
| ______________________________________ |
| Comparison of Melting Out Disease Incidence of Ba 73-540 |
| and Other Kentucky Bluegrass Varieties at Various |
| Locations in the U.S.A. and Canada Over a Two Year Period |
| Melting Out - Mean Values (a) |
| Year 2 |
| Year 1 Fall |
| Variety Spring (b) |
| Fall (c) Spring (d) |
| Mean (e) |
| ______________________________________ |
| Ba 73-540 5.2 8.7 7.3 6.3 |
| Abbey 3.7 8.0 6.3 6.7 |
| Able I 4.5 9.0 6.5 6.3 |
| Amazon 4.2 7.0 7.2 6.3 |
| America 5.2 8.7 6.8 7.0 |
| Aquila 3.8 7.3 6.8 5.7 |
| A-34 4.8 8.7 6.5 6.3 |
| Aspen 5.0 8.7 6.2 6.0 |
| Asset 4.7 9.0 6.8 7.0 |
| Baron 4.3 8.3 6.5 6.3 |
| Barzan 4.0 3.3 6.2 6.7 |
| Bristol 5.7 9.0 6.5 6.3 |
| Challenger |
| 4.8 9.0 6.5 6.0 |
| Chateau 5.5 9.0 5.7 6.7 |
| Cheri 4.7 8.7 6.7 6.7 |
| Classic 6.2 8.7 6.3 6.7 |
| Coventry 4.3 9.0 6.2 6.7 |
| Eclipse 5.0 7.0 7.2 7.0 |
| Estate 5.3 9.0 6.5 6.7 |
| Georgetown |
| 5.8 9.0 6.0 6.0 |
| Glade 4.5 8.0 7.3 6.7 |
| Gnome 4.5 8.7 6.7 6.3 |
| Haga 6.2 9.0 6.0 6.3 |
| Julia 6.0 9.0 6.8 6.3 |
| Kelly 3.8 8.3 6.5 6.3 |
| Kenblue 3.7 1.0 4.3 5.3 |
| Liberty 5.5 8.7 7.7 -- |
| Marquis 4.8 7.7 6.7 6.0 |
| Merion 5.0 9.0 7.0 7.0 |
| Merit 4.2 8.3 6.3 6.3 |
| Midnight 4.0 9.0 7.2 6.0 |
| Monopoly 4.5 8.0 6.5 6.7 |
| Mystic 5.0 1.0 6.3 4.7 |
| Nassau 5.0 9.0 6.5 7.0 |
| Parade 5.7 9.0 6.2 6.0 |
| Ram I 4.5 5.3 6.3 7.0 |
| Rugby 5.7 9.0 6.3 6.7 |
| Sydsport 5.5 9.0 6.5 6.7 |
| Victa 5.2 8.0 7.2 6.7 |
| Wabash 4.7 6.3 4.7 4.7 |
| Welcome 3.8 1.3 6.5 7.0 |
| LSD (.05) 0.7 1.6 1.1 1.0 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = no disease |
| (b) Test Locations: Blacksburg and Blackstone, Virginia |
| (c) Test Location: Puyallup, Washington |
| (d) Test Locations: Agassiz, British Columbia; Post Falls, Idaho |
| (e) Test Location: Agassiz, British Columbia |
| TABLE 19 |
| ______________________________________ |
| Comparison of Dollar Spot and Powdery Mildew Disease |
| Incidence of Ba 73-540 and Other Kentucky Bluegrass |
| Varieties in the U.S.A. |
| Columbia Adelphia |
| Missouri New Jersey |
| Variety Dollar Spot |
| Powdery Mildew |
| ______________________________________ |
| Ba 73-540 8.0 5.7 |
| Abbey 7.3 1.0 |
| Able I 7.7 6.7 |
| Amazon 6.7 5.0 |
| America 7.3 7.7 |
| Aquila 7.3 8.3 |
| A-34 7.3 6.7 |
| Aspen 6.7 4.7 |
| Asset 7.0 2.0 |
| Baron 7.0 1.3 |
| Barzan 6.3 8.3 |
| Bristol 7.7 7.0 |
| Challenger 7.3 3.3 |
| Chateau 6.7 5.3 |
| Cheri 8.0 3.3 |
| Classic 6.3 2.7 |
| Coventry 7.7 6.0 |
| Eclipse 7.7 5.0 |
| Estate 7.3 7.0 |
| Georgetown 7.3 2.7 |
| Glade 7.3 3.3 |
| Gnome 8.0 1.0 |
| Haga 7.3 3.0 |
| Julia 7.7 2.0 |
| Kelly 7.0 1.7 |
| Kenblue 7.3 5.0 |
| Liberty 7.0 4.0 |
| Marquis 7.7 1.0 |
| Merion 7.3 1.0 |
| Merit 6.7 1.7 |
| Midnight 6.7 1.7 |
| Monopoly 7.0 6.7 |
| Mystic 8.0 8.0 |
| Nassau 6.7 2.3 |
| Parade 7.7 2.0 |
| Ram I 6.0 6.7 |
| Rugby 6.7 2.7 |
| Sydsport 7.3 6.7 |
| Victa 7.7 1.7 |
| Wabash 7.3 6.7 |
| Welcome 7.7 6.3 |
| LSD (.05) 1.4 1.4 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = no disease |
| TABLE 21 |
| ______________________________________ |
| Comparison of Powdery Mildew Disease Incidence of |
| Ba 73-540 and Other Kentucky Bluegrass Varieties at |
| Marysville, OH. |
| % Mildew (a) |
| Variety Test 1 Test 2 |
| ______________________________________ |
| Ba 73-540 19.2 18.3 |
| Adelphi 29.2 24.2 |
| America 0.0 |
| Banff 5.0 |
| Bristol 5.8 16.7 |
| Classic 54.2 |
| Eclipse 1.7 |
| Georgetown 12.5 |
| Glade 40.0 27.5 |
| Merion 37.5 48.3 |
| Merit 66.7 |
| Monopoly 7.5 |
| Nassau 24.2 24.2 |
| Newport 20.0 |
| Park 0.8 28.3 |
| Ram I 12.5 30.8 |
| Sydsport 7.5 |
| Vantage 12.5 15.8 |
| Victa 56.7 45.8 |
| Wabash 10.0 |
| ______________________________________ |
| (a) Mean for three ratings taken during summer months. |
| TABLE 22 |
| ______________________________________ |
| Comparison of Four Rust Disease Incidence of |
| Ba 73-540 and Other Kentucky Bluegrass Varieties at |
| in the U.S.A. and Canada. |
| ______________________________________ |
| Stem Stripe |
| Rust (a) Rust (a) |
| Post Agassiz, |
| Adelphia, Falls British |
| Variety NJ Idaho Columbia |
| ______________________________________ |
| Ba 73-540 8.0 8.0 8.0 |
| Abbey 6.3 8.3 6.3 |
| Able I 7.0 8.0 7.3 |
| Amazon 6.0 7.3 7.0 |
| America 8.3 7.7 8.0 |
| Aquila 8.0 7.0 6.7 |
| Aspen 8.0 7.0 6.7 |
| Asset 8.0 8.7 7.3 |
| A-34 8.0 8.0 7.0 |
| Baron 7.3 8.0 7.0 |
| Barzan 8.0 8.0 7.0 |
| Bristol 8.7 8.0 8.0 |
| Challenger 7.7 8.0 6.7 |
| Chateau 8.3 7.3 7.3 |
| Cheri 7.7 8.7 6.7 |
| Classic 8.7 8.3 8.0 |
| Coventry 8.3 8.0 8.0 |
| Eclipse 7.7 8.3 6.3 |
| Estate 7.3 7.7 8.0 |
| Georgetown 9.0 7.7 7.0 |
| Glade 7.7 8.0 6.0 |
| Gnome 7.7 8.7 7.0 |
| Haga 9.0 7.3 7.3 |
| Julia 8.0 7.3 7.0 |
| Kelly 7.3 8.7 5.7 |
| Kenblue 8.3 7.7 7.7 |
| Liberty 8.3 8.0 -- |
| Marquis 6.3 7.7 7.3 |
| Merion 2.7 4.0 5.3 |
| Merit 8.0 8.0 6.7 |
| Midnight 8.3 7.3 5.7 |
| Monopoly 8.0 7.3 7.3 |
| Mystic 5.3 6.0 5.3 |
| Nassau 7.7 8.0 7.3 |
| Parade 9.0 7.0 7.7 |
| Ram I 8.7 6.7 7.0 |
| Rugby 8.7 7.3 7.7 |
| Sydsport 8.0 7.7 8.0 |
| Victa 7.7 5.7 5.7 |
| Wabash 8.0 8.0 6.3 |
| Welcome 7.3 7.7 7.3 |
| LSD (.05) 1.0 2.0 1.2 |
| ______________________________________ |
| Crown |
| Rust (a) |
| Leaf Columbia |
| Rust (a) Mo. and |
| Santa Ana Agassiz Ritzville, |
| Variety Cal. BC Wash. |
| ______________________________________ |
| Ba 73-540 |
| 5.0 9.0 8.0 |
| Abbey 3.0 7.0 6.8 |
| Able I 2.0 8.3 7.5 |
| Amazon 3.0 9.0 6.7 |
| America 5.0 8.3 9.0 |
| Aquila 3.0 7.0 9.0 |
| Aspen 3.7 6.0 8.2 |
| Asset 2.7 9.0 8.8 |
| A-34 3.7 8.3 7.7 |
| Baron 3.3 8.0 7.7 |
| Barzan 5.0 8.3 8.7 |
| Bristol 5.3 8.3 9.0 |
| Challenger |
| 4.0 6.3 8.0 |
| Chateau 4.0 9.0 9.0 |
| Cheri 5.3 9.0 8.7 |
| Classic 6.3 9.0 8.2 |
| Coventry 4.0 8.9 9.0 |
| Eclipse 2.0 9.0 7.5 |
| Estate 5.0 9.0 8.2 |
| Georgetown |
| 5.3 8.7 7.2 |
| Glade 5.0 6.7 8.0 |
| Gnome 2.7 7.7 6.5 |
| Haga 5.7 8.0 8.7 |
| Julia 2.0 9.0 7.0 |
| Kelly 5.2 6.3 6.3 |
| Kenblue 4.0 6.7 7.0 |
| Liberty 5.3 -- 7.7 |
| Marquis 5.0 6.7 8.5 |
| Merion 2.3 5.0 6.2 |
| Merit 2.7 7.0 8.0 |
| Midnight 4.0 6.3 6.7 |
| Monopoly 3.7 9.0 8.2 |
| Mystic 3.0 7.0 7.0 |
| Nassau 4.3 8.3 8.8 |
| Parade 5.3 9.0 7.2 |
| Ram I 5.0 8.3 7.7 |
| Rugby 5.0 8.7 8.5 |
| Sydsport 4.0 8.7 7.8 |
| Victa 3.0 7.3 7.7 |
| Wabash 4.3 7.3 7.7 |
| Welcome 4.7 9.0 7.5 |
| LSD (.05) |
| 1.7 1.4 1.7 |
| ______________________________________ |
| (a) Rating Scale: 1-9 9 = no disease |
| TABLE 23 |
| ______________________________________ |
| Comparison of Snow Mold Disease Incidence of |
| Ba 73-540 and Other Kentucky Bluegrass Varieties |
| Snowmold (a) |
| East Lansing |
| Variety Michigan |
| ______________________________________ |
| Ba 73-540 6.7 |
| Abbey 7.0 |
| Able I 4.7 |
| Amazon 1.7 |
| America 3.7 |
| Aquila 6.0 |
| Aspen 6.7 |
| Asset 4.7 |
| A-34 5.3 |
| Baron 5.0 |
| Barzan 6.7 |
| Bristol 7.3 |
| Challenger 6.3 |
| Chateau 4.3 |
| Cheri 4.3 |
| Classic 5.7 |
| Coventry 4.7 |
| Eclipse 4.7 |
| Estate 5.0 |
| Georgetown 6.7 |
| Glade 5.7 |
| Gnome 4.7 |
| Haga 6.0 |
| Julia 6.0 |
| Kelly 6.0 |
| Kenblue 5.0 |
| Liberty 5.7 |
| Marquis 5.0 |
| Merion 4.0 |
| Merit 7.3 |
| Midnight 3.7 |
| Monopoly 5.0 |
| Mystic 5.3 |
| Nassau 6.7 |
| Parade 6.3 |
| Ram I 5.3 |
| Rugby 6.7 |
| Sydsport 4.3 |
| Victa 4.7 |
| Wabash 3.3 |
| Welcome 4.0 |
| LSD (.05) 2.5 |
| ______________________________________ |
| (a) Rating Scale: 1-9 9 = no disease |
| TABLE 24 |
| ______________________________________ |
| Comparison of % Browning of Ba 73-540 and Other |
| Kentucky Bluegrasses Under Heat and Drought Stress |
| at Prince Frederick, Maryland. |
| % Browning |
| Variety Mean (a) |
| ______________________________________ |
| Ba 73-540 11.3 |
| Adelphi 20.0 |
| Bristol 18.7 |
| Cynthia 36.3 |
| Glade 20.0 |
| Merion 28.0 |
| Merit 28.5 |
| Nugget 32.5 |
| Park 24.5 |
| Pascal 45.0 |
| Vantage 19.2 |
| Victa 18.2 |
| ______________________________________ |
| (a) Mean for two ratings taken in August |
| TABLE 25 |
| ______________________________________ |
| Comparison of Drought Tolerance Ba 73-540 and Other |
| Kentucky Bluegrass Varieties at Various Locations in |
| the U.S.A. and Canada |
| Variety Drought Tolerance (a) |
| ______________________________________ |
| Ba 73-540 7.7 |
| Abbey 7.7 |
| Able I 7.7 |
| Amazon 7.0 |
| America 8.0 |
| Aquila 7.3 |
| A-34 6.0 |
| Aspen 7.3 |
| Asset 7.0 |
| Baron 7.0 |
| Barzan 6.0 |
| Bristol 6.7 |
| Challenger 8.3 |
| Chateau 7.0 |
| Cheri 7.3 |
| Classic 7.3 |
| Coventry 7.3 |
| Eclipse 7.3 |
| Estate 7.0 |
| Georgetown 6.7 |
| Glade 6.7 |
| Gnome 8.0 |
| Haga 6.7 |
| Julia 7.3 |
| Kelly 7.7 |
| Kenblue 6.3 |
| Liberty 7.7 |
| Marquis 7.7 |
| Merion 7.3 |
| Merit 8.0 |
| Midnight 6.0 |
| Monopoly 6.7 |
| Mystic 7.7 |
| Nassau 8.0 |
| Parade 5.7 |
| Ram I 8.7 |
| Rugby 7.0 |
| Sydsport 7.0 |
| Victa 7.7 |
| Wabash 6.7 |
| Welcome 7.3 |
| LSD 0.05 1.7 |
| ______________________________________ |
| (a) Rating Scale 1-9: 9 = no dormacy |
| TABLE 26 |
| ______________________________________ |
| Comparison of Sod Strength Eight Months After |
| Planting of Ba 73-540 and Other Kentucky Bluegrasses |
| at Remington, Va. |
| SOD STRENGTH (a) |
| Variety 8 Months |
| ______________________________________ |
| Ba 73-540 20.3 |
| Abbey 17.0 |
| Able I 16.3 |
| Amazon 18.0 |
| America 30.7 |
| Aquila 19.3 |
| A-34 21.7 |
| Aspen 21.7 |
| Asset 23.7 |
| Baron 25.7 |
| Barzan 13.0 |
| Bristol 24.7 |
| Challenger 23.0 |
| Chateau 23.3 |
| Cheri 28.3 |
| Classic 23.0 |
| Coventry 18.0 |
| Eclipse 22.0 |
| Estate 23.3 |
| Georgetown 30.0 |
| Glade 26.3 |
| Gnome 22.0 |
| Haga 22.3 |
| Julia 12.3 |
| Kenblue 22.0 |
| Liberty 20.3 |
| Marquis 23.0 |
| Merion 21.3 |
| Merit 25.3 |
| Midnight 22.3 |
| Monopoly 26.0 |
| Mystic 21.3 |
| Nassau 22.3 |
| Parade 26.0 |
| Ram I 22.3 |
| Rugby 20.3 |
| Sydsport 26.0 |
| Victa 29.3 |
| Wabash 16.7 |
| Welcome 24.7 |
| LSD (.05) 6.9 |
| ______________________________________ |
| (a) Rating Scale: Kilograms of tension needed to tear sod. |
| TABLE 27 |
| ______________________________________ |
| Seed yield Comparisons in Pounds Per Acre of |
| Ba 73-540 and Other Kentucky Bluegrass Varieties in |
| Oregon Over a Three Year Period |
| Lbs/Acre |
| Gervais LaGrande |
| Variety Year 1 Year 2 Year 3 |
| ______________________________________ |
| Ba 73-540 859 1224 993 |
| Bristol 862 1021 690 |
| Victa 1342 1425 1224 |
| LSD (.05) 220 160 |
| ______________________________________ |
Meier, Virgil D., Mayer, Eugene W.
| 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 |
| PP10925, |
Oct 14 1997 |
OMS Investments, Inc. |
Kentucky Bluegrass, named `Ba74-17` |
| PP11520, |
Jul 22 1998 |
OMS Investments, Inc. |
Kentucky bluegrass designated `Ba79-260` |
| PP11536, |
Feb 27 1998 |
OMS Investments, Inc. |
Kentucky bluegrass designated `Ba87-102` |
| PP11647, |
Jul 22 1998 |
OMS Investments, Inc. |
Kentucky bluegrass designated `Ba76-372` |
| PP11987, |
May 24 2000 |
OMS Investments, Inc. |
Kentucky bluegrass designated `Ba75-173` |
| PP12435, |
Nov 10 2000 |
OMS Investments, Inc. |
Kentucky bluegrass designated `Ba81-227` |
| PP18439, |
Aug 19 2005 |
OMS Investments, Inc. |
Hybrid variety of (Texas Bluegrass×Kentucky Bluegrass)×Kentucky Bluegrass designated ‘HB 329’ |
| PP18467, |
Aug 06 2004 |
OMS Investments, Inc. |
Hybrid variety of Texas X kentucky bluegrass designated ‘HB 129’ |
| PP21045, |
Feb 22 2008 |
OMS INVESTMENTS, INC |
Hybrid variety of Texas×Kentucky bluegrass designated ‘HB 128’ |
| PP9036, |
Sep 23 1993 |
The O. M. Scott and Sons Company |
BA 73-366 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 |
| Patent |
Priority |
Assignee |
Title |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a