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
patent application, Ser. No. 872,537, filed June 10, 1986; U.S. Plant
patent application, Ser. No. 910,146, filed Sept. 19, 1986; U.S. Plant
patent application, Ser. No. 27,285, filed Mar. 17, 1987 and U.S. Plant
patent application, Ser. No. 28,424, filed Mar. 17, 1987.
The present invention relates to a new and distinct variety of Poa
pratensis that has been designated Ba 72-441 Kentucky bluegrass.
Ba 72-441 plant material originated by crossing a Kentucky bluegrass plant
("Victa") disclosed in U.S. Plant Pat. No. 3,156, the seed parent, with a
Kentucky bluegrass plant ("Windsor") disclosed in U.S. Plant Pat. No.
2,364, the pollen parent. As a result of this breeding, a distinct variety
was produced and asexually propagated by rhizomes, tillers and
disseminules. Seed of Ba 72-441 was produced first at Marysville, Ohio and
later at Gervais, Oreg. This seed was used to plant turf performance
evaluation trials.
Asexual reproduction of Ba 72-441 by propagules (tillers and rhizomes) and
by disseminules (modified caryopses produced by apomixis) has consistently
produced progeny plants indistinguishable from the mother plant.
Ba 72-441 has a number of highly desirable characteristics including a good
level of resistance to Helminthosporium spp. that causes leaf spot,
melting out and crown rot, Ustilago striiformis that causes stripe smut,
and Puccinia spp. that causes rust; 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 turf performance as
evidenced by consistently high scores in tests throughout the U.S.A.; and
a very high seed yield potential in the bluegrass seed production region
of the U.S.A.
In comparison with its seed parent, the new variety has a thinner peduncle,
a more narrow and thinner flag leaf, and better winter color. In
comparison to the pollen parent, the new variety has fewer seeds per pound
and a higher seed yield.
FIG. 1 is a photograph of Ba 72-441 Kentucky bluegrass plant in the
vegetative stage including the extensive root and rhizome system;
FIG. 2 is a photograph of Ba 72-441 Kentucky bluegrass panicle;
FIG. 3 is a photograph of Ba 72-441 Kentucky bluegrass seed; and
FIG. 4 is a photograph of Ba 72-441 Kentucky bluegrass turf.
Ba 72-441 Kentucky bluegrass (Poa protensis L.) is perennial with creeping
rhizomes forming a moderately dense turf. When plants overwinter in the
field with freezing temperatures and then are brought into the greenhouse
during late winter to continue growth undisturbed by clipping under
moderate temperatures (60°-80° F.), culms are erect
averaging 421 mm in length with an average of 2.7 nodes per culm. The
uppermost internode averages 9.3 cm, and the peduncle averages 10.6 cm in
length, and 0.558 mm in thickness. The flag leaf averages 4.3 cm in
length, 3.3 mm in width and 0.107 mm in thickness. The panicle has an
average length of 7.6 cm, width of 4.2 cm, and 5.2 whorls. The lowest
whorl has an average of 4.0 branches and the third whorl from the bottom
of the panicle has an average of 2.7 branches. The average spikelet at the
tip of a branch in the lowest whorl is 5.1 mm in length and has 3.9
florets with an outer glume of 2.9 mm and an inner glume of 3.3 mm in
length. A similar spikelet from the third whorl from the bottom of the
panicle is 5.0 mm in length and has 3.8 florets with an outer glume of 3.3
mm and an inner glume of 3.3 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 72-441 is 3.18
mm in length and 0.88 mm in width with approximately 1,003,037 seeds per
pound. Comparisons of Ba 72-441 with other varieties on seed dimensions
and on seed numbers per pound are shown in Tables 1 and 2.
| TABLE 1
|
| ______________________________________
|
| Seed Measurements of Ba 72-441 and Other Bluegrass
|
| Varieties After Conditioning.
|
| Length Width
|
| Variety (mm) (mm)
|
| ______________________________________
|
| Ba 72-441 3.18 0.88
|
| Ba 70-139 2.86 0.78
|
| Ba 72-492 2.53 0.76
|
| Ba 72-500 2.77 0.80
|
| Baron 3.07 0.86
|
| Bristol 2.73 0.80
|
| 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 72-441 and
|
| Other Bluegrass Varieties After Conditioning.
|
| Number of Seeds
|
| Per Pound
|
| ______________________________________
|
| Ba-72-441 1,003,037
|
| Ba 70-139 1,246,200
|
| Ba 72-492 1,275,740
|
| Ba 72-500 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
|
| Glade 1,108,441
|
| 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 characters to some extent, comparisons of morphological
characteristics of Ba 72-441 are made with other Kentucky bluegrass
varieties in Tables 3-10.
| TABLE 3
|
| ______________________________________
|
| Morphological Comparison of Panicles of Ba 72-441 and
|
| Other Bluegrass Varieties in the Greenhouse at Marysville, Ohio.
|
| Num-
|
| ber of
|
| Number of
|
| Panicle Panicle Panicle Whorls
|
| Branches
|
| Nod- Length Width Per Lower Third
|
| Variety
|
| ding* (cm) (cm) Panicle
|
| Whorl Whorl
|
| ______________________________________
|
| Ba 72-441
|
| 1.4 7.6 4.2 5.2 4.0 2.7
|
| Ba 70-139
|
| 2.0 6.7 3.7 4.8 3.8 2.7
|
| Ba 72-492
|
| 1.2 7.5 4.2 5.5 4.0 3.0
|
| Ba 72-500
|
| 2.0 6.8 3.8 5.0 4.0 2.4
|
| 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
|
| 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 72-441 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 72-441
|
| 5.1 5.0 3.9 3.8
|
| Ba 70-139
|
| 5.2 5.2 4.2 4.0
|
| Ba 72-492
|
| 5.2 5.0 4.4 4.2
|
| Ba 72-500
|
| 5.1 5.0 4.2 3.9
|
| Baron 5.0 5.0 3.7 3.8
|
| Bristol 6.2 6.0 5.7 5.3
|
| 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 72-441 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 72-441
|
| 2.9 2.9 3.3 3.3
|
| Ba 70-139
|
| 3.2 3.1 3.5 3.5
|
| Ba 72-492
|
| 2.9 3.0 3.3 3.3
|
| Ba 72-500
|
| 3.1 3.1 3.4 3.4
|
| Baron 2.9 2.8 3.4 3.3
|
| Bristol 3.4 3.3 3.7 3.9
|
| 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 72-441 and
|
| Other Bluegrass Varieties in the Greenhouse at Marysville, Ohio.
|
| Flag Leaf Flag Leaf Flag Leaf
|
| Length Width Thickness
|
| Variety (cm) (mm) (mm)
|
| ______________________________________
|
| Ba 72-441
|
| 4.3 3.3 0.107
|
| Ba 70-139
|
| 4.7 3.2 0.112
|
| Ba 72-492
|
| 5.2 3.6 0.117
|
| Ba 72-500
|
| 4.1 3.2 0.112
|
| Baron 4.5 3.2 0.119
|
| Bristol 5.5 3.4 0.127
|
| Nassau 6.2 3.1 0.127
|
| Newport 6.1 3.5 0.135
|
| Park 4.2 2.6 0.109
|
| 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 72-441 and Other Bluegrass Varieties
|
| in the Greehouse at Marysville, Ohio.
|
| Top
|
| Peduncle Peduncle Culm Number of
|
| Internode
|
| Length Width Length
|
| Nodes Per
|
| Length
|
| Variety
|
| (cm) (mm) (mm) Culm (cm)
|
| ______________________________________
|
| Ba 72-441
|
| 10.6 0.558 421 2.7 9.3
|
| Ba 70-139
|
| 13.2 0.610 435 2.7 10.2
|
| Ba 72-492
|
| 12.6 0.558 486 2.2 10.5
|
| Ba 72-500
|
| 12.9 0.660 439 2.7 9.8
|
| Baron 12.7 0.559 482 2.5 10.1
|
| Bristol
|
| 15.0 0.686 522 2.7 11.3
|
| Nassau 8.0 0.533 450 2.5 11.2
|
| Newport
|
| 18.0 0.558 547 2.3 11.2
|
| Park 14.3 0.787 578 3.0 13.0
|
| Ram I 18.5 0.610 527 3.0 10.2
|
| Victa 12.2 0.711 474 2.4 10.6
|
| LSD(.05)
|
| 3.7 0.018 79 0.6 2.1
|
| ______________________________________
|
| TABLE 8
|
| ______________________________________
|
| Morphological Comparison of Leaves of Ba 72-441 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 72-441
|
| 0.23 218 3.9 56
|
| Ba 70-139
|
| 0.26 218 4.1 55
|
| Ba 72-492
|
| 0.28 239 4.4 52
|
| Ba 72-500
|
| 0.25 204 4.1 50
|
| Baron 0.30 313 4.4 63
|
| Bristol 0.30 253 4.3 37
|
| 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 Comparison of Leaf Hairs of Ba 72-441 and
|
| Other Bluegrass Varieties in the Greenhouse at Marysville, Ohio.
|
| Hairsa Around
|
| Ligule on
|
| Upper Surface Hairsa on
|
| Hairsb on
|
| Variety of the Leaf Collar Ligule
|
| ______________________________________
|
| Ba 72-441
|
| 1.0 3.4 2.2
|
| Ba 70-139
|
| 1.0 3.5 1.5
|
| Ba 72-492
|
| 1.0 3.2 1.3
|
| Ba 72-500
|
| 1.0 3.5 2.7
|
| Baron 1.0 5.0 4.0
|
| Bristol 1.3 4.7 4.3
|
| 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: O = none, 5 = many.
|
| TABLE 10
|
| ______________________________________
|
| Morphological Comparisons of Ba 72-441 and Other Bluegrass
|
| Varieties Grown as Unmowed Spaced Plants in the Field at
|
| Marysville, Ohio.
|
| Mature
|
| Plant Height Panicle Density
|
| Seedhead Weight
|
| ______________________________________
|
| Ba 72-441
|
| 38 7 656
|
| Ba 70-139
|
| 35 5 402
|
| Adelphi
|
| 42 3 345
|
| Nugget 17 3 233
|
| Bristol
|
| 40 4 511
|
| Merion 25 2 320
|
| Glade 20 3 214
|
| Vantage
|
| 52 2 1019
|
| Victa 23 2 648
|
| ______________________________________
|
| Ratings: Mature Plant Height (cm) includes panicle.
|
| Panicle Density 1-10, 10 = high panicle density.
|
| Seedhead Weight Weight (mg) of 3 panicles.
|
Ba 72-441 has performed well throughout the U.S.A., as exhibited by high
turf quality ratings in many different locations in comparison to other
varieties. In addition, it has a pleasant medium green color which can be
maintained throughout the growing season, good winter color, and early
spring greening. Comparisons of Ba 72-441 with other varieties for quality
and color are shown in Tables 11-14.
| TABLE 11
|
| ______________________________________
|
| Comparison of the Turf Quality of Ba 72-441 and Other
|
| Bluegrass Varieties in the U.S.A.
|
| Lin- Marysville,
|
| Adelphia coln Maryland Ohio
|
| New Nebra- Belts-
|
| Acco- Test Test
|
| Jersey ska ville keek 1 2
|
| 2 Year 2 Year 1 Year
|
| 3 Year
|
| 5 Year
|
| 5 Year
|
| Variety Mean Mean Mean Mean Mean Mean
|
| ______________________________________
|
| Ba 72-441
|
| 6.6 6.0 5.9 2.7 2.7 2.4
|
| A-34 6.2 5.6
|
| Adelphi 6.4 6.1 5.9 2.4 2.7
|
| Banff 4.8
|
| Baron 6.4 5.6 5.3 2.4
|
| Birka 5.9 5.9 1.8
|
| Bonnieblue
|
| 6.7 5.8 5.0 2.3
|
| Bono 1.9
|
| Bristol 6.5 5.9 5.0 2.3 2.7 2.3
|
| Eclipse 7.2 5.8 5.9
|
| Fylking 5.7 6.1 4.9 2.1
|
| Geary 3.6
|
| Glade 6.7 6.4 5.3
|
| Kenblue 3.3 1.8 2.0
|
| Merion 6.0 5.9 5.3 2.2
|
| Merit 6.2 6.0 6.1 2.3 2.2
|
| Midnight
|
| 7.3 5.9 5.5 2.4
|
| Monopoly
|
| 5.7 4.9
|
| Nassau 5.9 4.5
|
| Newport 2.1
|
| Parade 5.6 6.5 5.0 2.7
|
| Park 5.7 2.0 2.1
|
| Ram I 6.2 5.9 4.6 2.4
|
| Rugby 2.2
|
| Shasta 5.7
|
| Sydsport
|
| 6.0 6.3 5.8 2.2
|
| Touchdown
|
| 6.1 5.9 5.8
|
| Trenton 2.4
|
| Vantage 3.6 5.8 5.5 2.3 2.6 2.0
|
| Victa 6.5 5.7 5.5 2.3 2.6 2.3
|
| Wabash 4.8
|
| ______________________________________
|
| Rating Scale: Larger number indicates higher quality.
|
| TABLE 12
|
| ______________________________________
|
| Comparison of Turf Color of Ba 72-441 and Other
|
| Bluegrass Varieties at Various Locations in the U.S.A.
|
| St. Louis
|
| Lincoln Marysville
|
| Prince Frederick
|
| Variety Missouri Nebraska Ohio Maryland
|
| ______________________________________
|
| Ba 72-441
|
| 9.1 7.0 8.3 7.5
|
| A-34 6.5
|
| Adelphi 9.4 7.2 8.4 7.8
|
| America 9.4 7.0 8.5
|
| Baron 9.2 6.9 8.5 7.3
|
| Birka 9.1 6.7 8.1 7.0
|
| Bonnieblue 7.0 7.7
|
| Bono 9.0 6.6
|
| Bristol 9.5 7.3 8.9 7.4
|
| Eclipse 7.0 8.5
|
| Fylking 6.8
|
| Glade 9.3 7.1 8.4
|
| Kenblue 8.1 5.9
|
| Merion 6.9
|
| Merit 9.2 7.0 6.8
|
| Midnight 7.9 8.9 7.4
|
| Newport
|
| Parade 6.8
|
| Park 9.0 6.1 8.1 6.6
|
| Ram I 7.3 7.8
|
| Rugby 6.8 7.9
|
| Sydsport
|
| 9.2 7.0 8.2
|
| Touchdown
|
| 9.0 6.8 8.1
|
| Vantage 9.2 6.8 8.5 7.7
|
| Victa 9.2 6.9 8.4 7.1
|
| Wabash 7.0
|
| LSD(.05)
|
| 0.3 -- -- --
|
| ______________________________________
|
| Rating Scale: Larger number indicates darker green color.
|
| TABLE 13
|
| ______________________________________
|
| Winter Color of Ba 72-441 and Other Bluegrass Varieties.
|
| Gervais, Oregon
|
| Marysville, Ohio
|
| Variety 2 Year Mean 1 Year Mean
|
| ______________________________________
|
| Ba 72-441 4.8 2.7
|
| Adelphi -- 2.0
|
| Bristol 5.4 6.7
|
| Parade -- 3.8
|
| Park -- 1.2
|
| Vantage -- 1.7
|
| Victa 3.4 2.7
|
| LSD(.05) 0.9 --
|
| ______________________________________
|
| Rated 1-9: 9 = darkest green color.
|
| TABLE 14
|
| ______________________________________
|
| Spring Greening of Ba 72-441 and Other Bluegrass Varieties.
|
| Maryland
|
| Lincoln Prince Belts- Marysville, Ohio
|
| Variety Nebraska Frederick ville Test 1 Test 2
|
| ______________________________________
|
| Ba 72-441
|
| 6.0 7.0 5.3 5.3 3.5
|
| A-34 5.0 5.3
|
| Adelphi 6.8 7.0 4.7 7.7 2.8
|
| America 4.8 4.7 6.3
|
| Banff 5.3
|
| Baron 5.3 7.0 4.3 3.0
|
| Birka 5.0 7.3 4.7 5.7
|
| Bonnieblue
|
| 5.3 7.0
|
| Bono 8.3
|
| Bristol 5.5 7.3 4.7 5.7 4.2
|
| Cheri 4.8 4.3
|
| Eclipse 5.5 5.7 6.5
|
| Enmundi 5.3 4.7
|
| Fylking 4.8 4.7
|
| Geronimo 6.3
|
| Glade 5.3 5.3 5.0
|
| Kenblue 6.3 3.3 8.0
|
| Merion 5.0 4.0
|
| Merit 5.5 6.0 4.3
|
| Midnight
|
| 4.8 7.0 4.7 2.0
|
| Monopoly 5.3
|
| Nassau 7.7
|
| Nugget 2.3
|
| Parade 5.5 4.3 3.2
|
| Park 5.8 6.0 7.7 2.5
|
| Ram I 5.5 7.7 6.5
|
| Rugby 5.0 7.0
|
| Shasta 5.3
|
| Sydsport
|
| 4.8 4.7 5.3
|
| Touchdown
|
| 5.3 4.3 5.7
|
| Vantage 5.8 7.7 5.0 8.0 3.0
|
| Victa 5.8 5.7 3.7 4.3 3.0
|
| Wabash 6.7 5.3
|
| LSD 0.8 1.8 1.6
|
| ______________________________________
|
| Rated 1-9: 9 = darkest green color.
|
Turf diseases are one of the major causes of inconsistent and poor turf
performance among locations and years. Ba 72-441 has been found to have a
high level of resistance to leaf spot (also known as melting out and crown
rot) caused by Helminthosporium vagans, a medium to high level of
resistance to rust caused by Puccinia spp., a medium level of resistance
to dollarspot caused by Sclerotina homeocarpa, and a high level of
resistance to stripe smut caused by Ustilago striiformis.
Resistance to stripe smut was determined in tests in Ohio and Maryland
where Ba 72-441 and the standard varieties included in the tests had
little or no incidence of stripe smut but several experimental selections
were heavily infected. Comparisons of resistance to leaf spot, rust, and
dollarspot are presented in Tables 15-17.
| TABLE 15
|
| ______________________________________
|
| Comparison of Leafspot Disease Incidence on Ba 72-441 and
|
| Other Bluegrasses at Several Locations in the U.S.A.
|
| St. Marysville,
|
| Louisa Beltsvilleb
|
| Adelphiab
|
| Ohioa
|
| Variety Missouri Maryland New Jersey
|
| Test 1
|
| Test 2
|
| ______________________________________
|
| Ba 72-441
|
| 2 8.0 8.0 6 42
|
| A-34 5.3 4.3
|
| Adelphi 2 8.0 5.7 9 75
|
| America 8 43
|
| Banff 5.3 7.0
|
| Baron 2 7.0 8.7 42
|
| Birka 5 6.3 58
|
| Bonnieblue 7.0
|
| Bono 7 63
|
| Bristol 2 7.0 8.3 5 43
|
| Eclipse 7.7 9.0 80
|
| Fylking 6.7 6.3
|
| Geary 2.0
|
| Glade 2 7.3 6.3 38
|
| Kenblue 3.3 1.7 93
|
| Merion 6.1 7.7
|
| Merit 3 7.3 7.7
|
| Midnight 7.0 7.0
|
| Monopoly 5.3 6.0
|
| Nassau 7.7 7.4
|
| Parade 6.0 5.0 10
|
| Park 52 54 95
|
| Ram I 6.5 7.0
|
| Rugby 5.0
|
| Shasta 6.0
|
| Sydsport
|
| 3 7.3 6.3 48
|
| Touchdown
|
| 7 7.7 57
|
| Trenton 6.0
|
| Vantage 7 5.0 2.0 15 90
|
| Victa 2 8.0 7.0 7 22
|
| Wabash 2.0
|
| LSD(.05)
|
| 7 1.9 34
|
| ______________________________________
|
| Ratings
|
| a % of turf affected by disease.
|
| b 1-9: 9 = least disease.
|
| TABLE 16
|
| ______________________________________
|
| Comparison of Rust (Puccinia spp.) Disease Incidence on
|
| Ba 72-441 and Other Bluegrasses.
|
| Adelphiaa
|
| Gervais, Oregon
|
| Variety New Jersey Turfb
|
| Seed Productionc
|
| ______________________________________
|
| Ba 72-441 7.0 43 2.0
|
| Adelphi 7.1
|
| America 7.4
|
| Banff 6.5
|
| Baron 6.4
|
| Birka 3.5
|
| Bonnieblue
|
| 5.4
|
| Bristol 7.7 7 4.0
|
| Eclipse 4.7
|
| Julia 4.0
|
| Merion 2.4
|
| Merit 5.7
|
| Midnight 7.0
|
| Monopoly 7.1
|
| Mosa 4.0
|
| Nassau 6.8
|
| Newport 4.0
|
| Parade 6.2
|
| Ram I 7.0
|
| Touchdown 3.5
|
| Vantage 6.2
|
| Victa 5.6 63 2.0
|
| LSD(.05) 0.9
|
| ______________________________________
|
| Ratings:
|
| a Stem Rust (Puccinia graminis Pers.)0-9: 9 = no disease.
|
| b % of turf affected by disease.
|
| c 1-4: 4 = very susceptible.
|
| TABLE 17
|
| ______________________________________
|
| Comparison of Dollarspot Disease Incidence on Ba 72-441
|
| and Other Bluegrasses. -
|
| Prince Frederick
|
| Marysville
|
| Variety
|
| Maryland Ohio
|
| ______________________________________
|
| Ba 72-441 15 27
|
| Adelphi 8 20
|
| America 13
|
| Baron 50 23
|
| Birka 6 47
|
| Bonnieblue 10
|
| Bono 4 63
|
| Bristol 6 17
|
| Eclipse 8
|
| Glade 40
|
| Kenblue 8 37
|
| Merit 4
|
| Midnight 6
|
| Park 33
|
| Ram I 40
|
| Rugby 12
|
| Sydsport 43
|
| Touchdown 50
|
| Trenton 28
|
| Vantage 11 15
|
| Victa 5 23
|
| Wabash 11
|
| LSD(.05) 19 24
|
| ______________________________________
|
| Rating: % of turf affected by disease.
|
Ba 72-441 has the capability to tolerate heat and drought stress. In
addition, it has a low growth habit and a slower vertical growth rate than
many varieties, especially the common type of varieties such as Park,
Newport, and Kenblue, that should allow it to tolerate lower mowing
heights and possibly decrease the total number of mowings per year without
sacrificing overall turf performance. The leaf texture of the new variety
is similar to many bluegrass varieties when maintained under mowed turf
conditions. Comparisons showing tolerance to drought and heat stress,
growth habit, and leaf texture are presented in Tables 18-20.
| TABLE 18
|
| ______________________________________
|
| Comparison of Drought and Heat Tolerance of Ba 72-441
|
| and Other Bluegrasses.
|
| Prince Frederick
|
| Marysville
|
| Variety Maryland Ohio
|
| ______________________________________
|
| Ba 72-441 2 1
|
| Adelphi 12 18
|
| Baron 10
|
| Birka 5
|
| Bonnieblue 4
|
| Bono 13
|
| Bristol 11 8
|
| Kenblue 15
|
| Merit 7
|
| Midnight 13
|
| Parade 27
|
| Park 7 13
|
| Ram I 6
|
| Rugby 9
|
| Vantage 10 8
|
| Victa 9 13
|
| Wabash 9
|
| ______________________________________
|
| Rated as % turf losing healthy green color.
|
| TABLE 19
|
| ______________________________________
|
| Comparison of Growth Habit of Ba 72-441 and Other Bluegrass
|
| Varieties Under Mowed Conditions at Marysville, Ohio.
|
| Test 1a
|
| Variety Year 1 Year 2 Test 2b
|
| ______________________________________
|
| Ba 72-441 79 61 1.7
|
| Adelphi 2.7
|
| Bristol 69 73 2.0
|
| Fylking 95 80
|
| Kenblue 96 81
|
| Merion 76 71
|
| Merit 86 76
|
| Newport 92 78
|
| Parade 2.3
|
| Park 2.3
|
| Sydsport 70 64
|
| Vantage 85 65 2.0
|
| Victa 81 64 2.0
|
| LSD(.05) 15 13 0.6
|
| ______________________________________
|
| Rating:
|
| a Height (mm) of turf about one week after last mowing.
|
| b 0-9: 9 = very tall growing turf, 0 = no growth since last mowing.
|
| TABLE 20
|
| ______________________________________
|
| Comparison of Leaf Texture of Ba 72-441 and Other
|
| Bluegrasses Under Mowed Turf Conditions.
|
| St. Louis
|
| Marysville
|
| Variety Missouri Ohio
|
| ______________________________________
|
| Ba 72-441 4.6 5.0
|
| Adelphi 5.3
|
| America 6.0
|
| Baron 4.6
|
| Birka 6.0
|
| Bono 5.6
|
| Bristol 5.3 5.0
|
| Fylking 5.8
|
| Glade 6.0
|
| Kenblue 5.5
|
| Merion 5.0
|
| Merit 4.3 5.0
|
| Newport 5.0
|
| Park 6.0
|
| Sydsport 5.0 5.0
|
| Touchdown 5.0
|
| Vantage 6.0 5.3
|
| Victa 4.4 4.8
|
| LSD(.05) 0.7 0.4
|
| ______________________________________
|
| Rating: 1-9: 9 = narrowest leaf blade.
|
The new variety has a very high level of seed yielding potential which will
make it economical to produce and aid in its commercial success.
Comparative results on seed yield are shown in Table 21.
| TABLE 21
|
| ______________________________________
|
| Seed Yield Comparisons of Ba 72-441 and Other Bluegrass
|
| Varieties in Oregon.
|
| Location Gervais LaGrande
|
| Harvest Year
|
| Year 1 Year 2 Mean Year 1
|
| Year 2
|
| Mean
|
| ______________________________________
|
| Variety
|
| Ba 72-441
|
| 691 1586 1139 1512 1253 1383
|
| Victa 780 1394 1087 1419 1200 1310
|
| Newport 435 1256 846
|
| Bristol 347 808 578 1089 970 1030
|
| Mosa 322 1060 691
|
| Julia 296 1016 656
|
| LSD(.05) 140 134 149 181 220
|
| ______________________________________
|
| Rating: Pounds per acre of conditioned seed.
|
Turner, James K., 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