TREA

Kentucky bluegrass

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Information

  • Patent Grant
  • PP6279
  • Patent Number
    PP6,279
  • Date Filed
    Tuesday, June 10, 1986
    39 years ago
  • Date Issued
    Tuesday, September 6, 1988
    37 years ago
  • US Classifications
    Field of Search
    • US
    • PLT 88
  • International Classifications
    • A01H500
Information
Abstract
A variety of Kentucky bluegrass having a good level of disease resistance, excellent turf performance and excellent seed yield.
Description

BACKGROUND
Kentucky bluegrasses have been disclosed in U.S. Plant Pat. No. 3,156 which issued on May 9, 1972; U.S. Plant Pat. No. 3,186 which issued on May 23, 1972 and U.S. Plant Pat. No. 4,336 which issued on Nov. 28, 1978.
SUMMARY OF THE VARIETY
The present invention relates to a new and distinct variety of Poa pratensis which has been designated Ba 61-91 Kentucky bluegrass.
Ba 61-91 plant material originated as one of several spaced plants at Marysville, Ohio and seed of Ba 61-91 was produced first at Marysville, Ohio, then Salem and Gervais, Oreg. This seed was used to plant turf for performance evaluation trials.
Ba 61-91 Kentucky bluegrass reproduces asexually both apomictically and vegetatively; i.e., by tillers and rhizomes. All asexually reproduced Ba 61-91 offspring appear to show complete conformity with the mother plant.
Ba 61-91 has a number of highly desirable characteristics including a good level of resistance to Helminthosporium spp., Ustilago striiformis, Fusarium roseum, Sclerotinia homoeocarpa, Puccinia graminis, Corticium spp., Rhizoctonia spp., and Pythium spp. It has a desirable dark green color and produces a good, dense turf that persists over a wide range of environmental conditions.





BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a photograph of Ba 61-91 Kentucky bluegrass plant after anthesis at Gervais, Oreg.
FIG. 2 is a photograph of Ba 61-91 Kentucky bluegrass plant in the vegetative stage including the extensive root and rhizome system;
FIG. 3 is a photograph of Ba 61-91 Kentucky bluegrass panicle; and
FIG. 4 is a photograph of Ba 61-91 Kentucky bluegrass seed.





DETAILED DESCRIPTION OF THE VARIETY
The morphological characteristics of Ba 61-91 and other commercially available bluegrass varieties are compared in Table 1.
TABLE 1______________________________________Morphological comparison of Ba 61-91 and otherbluegrass varieties at Gervals, Oregon______________________________________Floret SpikeletLength Length Glume Length (mm) Mature PlantVariety (mm) (mm) Glume 1 Glume 2 Height (cm)______________________________________Ba 61-91 3.95 5.52 2.87 3.13 46.5Baron 3.17 4.16 2.55 2.90 60.7Merion 2.72 4.56 2.51 2.76 62.7Merit 3.43 4.73 2.67 3.02 72.0Newport 3.46 5.42 3.21 3.60 73.8Victa 3.30 4.48 2.72 3.05 64.0LSD(.05) 0.35 0.17 0.11 0.10 7.9______________________________________ Panicle Peduncle Flagleaf No. of Whorls Length Length Length WidthVariety per Panicle (cm) (cm) (cm) (mm)______________________________________Ba 61-91 10.0 6.9 35.8 3.4 3.6Baron 11.3 8.4 32.7 5.3 3.5Merion 11.3 9.6 40.4 6.5 4.7Merit 11.0 5.8 38.1 6.0 3.8Newport 13.0 10.3 37.9 6.3 4.3Victa 13.0 8.9 40.4 6.7 4.9LSD(.05) 1.3 3.6 7.3 2.3 0.9______________________________________ No. of Branches Lowest Third No. of Florets Variety Whorl Whorl per Spikelet______________________________________ Ba 61-91 4.5 3.0 4.3 Baron 5.0 4.3 2.8 Merion 3.7 2.7 4.7 Merit 6.0 4.0 3.2 Newport 4.3 4.0 4.6 Victa 4.7 4.7 3.0 LSD(.05) 0.7 1.2 0.7______________________________________
As shown by the foregoing table, the morphological characteristics of Ba 61-91 afford a basis for distinguishing it from other varieties of Poa pratensis such as those listed in the table.
Mowed plots of Ba 61-91 have been evaluated under turf conditions in many different tests and at numerous locations. Turfgrass performance information presented indicates the distinctiveness of Ba 61-91 compared to other bluegrass varieties and its desirable characteristics which enable it to provide good performance as described below.
Disease resistance is a highly significant and desirable characteristic that is necessary to the maintenance of good quality turf. Ba 61-91 Kentucky bluegrass has been demonstrated to provide good resistance to many major types of turf diseases in varied geographical locations.
Comparisons of Ba 61-91 and other bluegrasses for resistance to red thread (Corticium spp.), Pythium blight (Pythium spp.), Fusarium blight (Fusarium roseum) which is also known as Fusarium patch, leaf spot (Helminthesporium spp) which is also known as melting out, and dollar spot (Sclerotinia homoeocarpia) diseases are presented in Table 2.
TABLE 2______________________________________Disease ratings of BA 61-91 and other bluegrass varieties.______________________________________1983. Disease Ratings* Pythium Fusarium Red Thread blight blightVariety Blacksburg, VA Urbana, IL Stillwater, OK______________________________________Ba 61-91 6.7 9.0 8.3A-34 5.7 6.3 7.7Adelphi 6.0 8.3 8.3America 6.7 6.3 9.0Baron 6.3 9.0 8.8Birka 6.0 5.7 8.7Cheri 5.7 7.7 9.0Eclipse 7.7 9.0 9.0Enmundi 6.0 7.7 8.0Fylking 6.0 8.3 7.7Glade 5.3 5.7 8.7Kenblue 4.0 3.7 8.7Merion 6.0 9.0 8.7Merit 7.3 9.0 8.3Nassau 6.7 8.0 8.3Parade 6.3 8.7 8.3Ram I 6.7 6.3 8.5S.D. Common 4.3 4.3 9.0Sydsport 5.7 7.0 7.7LSD (.05) 1.5 1.6 1.7______________________________________ Disease Ratings* Dollar Fusarium Melting Out Spot 3 patchSpring Loca-Variety Moscow, ID 3 Locations** cations*** Mean______________________________________Ba 61-91 8.0 6.4 6.8 7.53A-34 5.7 4.8 6.9 6.18Adelphi 8.3 6.3 7.1 7.38America 6.0 5.4 6.8 6.70Baron 5.3 6.3 6.7 7.07Birka 5.3 6.3 6.6 6.43Cheri 6.0 5.8 5.9 6.68Eclipse 6.3 7.2 7.7 7.82Enmundi 5.3 5.8 7.1 6.65Fylking 6.7 6.0 7.1 6.97Glade 8.7 5.9 6.9 6.87Kenblue 5.3 2.8 7.2 5.28Merion 7.7 6.4 6.9 7.45Merit 7.3 6.4 6.1 7.40Massau 6.7 7.3 6.8 7.30Parade 7.0 5.4 7.0 7.12Ram I 7.0 5.5 6.6 6.77S.D. Common 7.0 2.9 7.6 5.85Sydsport 3.0 6.0 5.7 5.85LSD (.05) 3.2 0.8 1.0______________________________________ *Rating Scale: 1-9, 9 = no disease **North Brunswick, NJ; Beltsville, MD; Blacksburg, VA ***Newark, DE (irrigated and not irrigated); Urbana, IL
With continued reference to the disease resistance of Ba 61-91, Table 3 provides further comparative data for Ba 61-91 and other bluegrasses showing the high level of resistance of Ba 61-91 to leaf spot diseases based on information collected at various locations in the United States and at different times of the year.
TABLE 3______________________________________Comparison of Helminthosporium leafspot resistance ofBa 61-91 and other bluegrass varieties. Leafspot Ratings* Spring Summer Fall MeanVariety l3** 6** 2** 21**______________________________________Ba 61-91 6.9 a-d 7.1 a-e 8.3 a 7.0 a-dBaron 6.6 a-g 6.7 1-g 8.3 s 6.7 a-gCheri 6.7 a-e 6.8 a-f 8.7 a 6.8 a-fFylking 6.8 a-e 6.4 a-h 8.6 a 6.9 a-dGlade 6.4 a-g 6.8 a-f 8.6 6.5 a-gKenblue 5.3 h 6.2 a-h 8.3 a 5.4 hMerion 6.9 a-e 6.8 a-f 8.1 a 6.9 a-dMerit 6.6 a-g 6.4 a-h 8.6 a 6.6 a-gParade 6.8 a-e 7.7 a 8.8 a 7.0 a-dPark 5.5 g-h 6.4 a-h 8.4 a 5.5 hRugby 6.6 a-g 7.2 a-e 8.7 6.7 a-gTouchdown 6.9 a-e 5.8 e-i 8.6 a 6.8 a-f______________________________________ Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (probability = 0.05). Locations reporting leafspot resistance: Mt. Carmel, CT; Beltsville, MD; Fairland, MD; and Blacksburg, VA. *Ratings Scale: 1-9, 9 = no injury **Number of readings
Comparisons of Ba 61-91 and other bluegrasses for resistance to stripe smut caused by the fungus Ustilago striiformis, Fusarium blight caused by the fungus Fusarium roseum, stem rust caused by the fungus Puccinia graminis, red thread caused by the fungus Corticium spp. and brown batch caused by the fungus Rhizoctonia spp. are presented in tables 4, 5, 6, 7 and 8, respectively.
TABLE 4______________________________________Comparison of stripe smut resistance of Ba 61-91and other bluegrass varieties. Stripe Smut Ratings*Variety New Brunswick, NJ Fairland, MD Mean______________________________________Ba 61-91 8.3 6.3 7.3 a-hAdelphi 8.7 8.3 8.5 a-bBaron 6.0 5.3 5.7 h-jFylking 7.7 6.0 6.8 b-iGlade 9.0 9.0 9.0 aKenblue 8.0 9.0 8.5 a-bMerion 2.7 3.0 2.8 mParade 6.3 6.0 6.2 f-iPark 8.7 9.0 8.8 aRugby 5.7 5.0 5.3 i-kWindsor 3.0 6.0 4.5 j-l______________________________________ Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (probability = 0.05). *Rating Scale: 1-9, 9 = no injury
TABLE 5______________________________________Comparison of fusarium blight resistance of Ba 61-91and other bluegrass varieties. Fusarium Blight Ratings* Mt. New Wye Belts- Carmel, Brunswick, Mills, ville,Variety CT NJ MD MD Mean______________________________________Ba 61-91 6.7 4.3 7.7 7.0 6.5 a-iAdelphi 8.0 9.0 6.3 8.5 8.1 aBaron 7.0 6.0 7.3 5.7 6.3 a-iDelft 7.3 3.7 4.0 7.5 6.0 d-jFylking 8.7 3.7 4.0 7.2 6.3 a-jGeronimo 7.0 3.7 4.3 7.2 5.9 e-jGlade 6.3 7.0 4.3 6.0 5.9 f-jMerion 7.0 6.0 5.7 8.2 7.0 a-iNugget 6.3 5.0 3.5 6.2 5.8 f-jSydsport 6.5 8.3 4.0 8.0 6.5 a-iTouchdown 7.0 7.0 6.0 5.5 6.0 d-jVantage -- 7.3 8.3 8.5 8.0 a-b______________________________________ Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (probability = 0.05). *Rating Scale: 1-9, 9 = no injury
TABLE 6______________________________________Comparison of stem rust resistance of Ba 61-91 and otherbluegrass varieties at Adelphia, New Jersey.Variety Stem Rust Ratings*______________________________________Ba 61-91 7.1 5.2Adelphi 6.9 7.1America 6.9 7.4Baron 7.0 6.4Birka 5.6 3.5Bonnieblue 7.0 5.4Bristol 7.7 7.7Eclipse 7.0 4.7Merion 3.6 2.4Merit 7.0 5.7Nassau 7.0 6.8Ram I 7.3 7.0Touchdown 5.7 3.5Vantage 5.9 6.2LSD 5% 1.0 0.9______________________________________ *Rating Scale: 9 = no disease, 0 = turf killed
TABLE 7______________________________________Comparison of red thread resistance of Ba 61-91 and otherbluegrass varieties at Newport News, Virginia.Variety Red Thread Ratings*______________________________________Ba 61-91 5.7 a-fAdelphi 7.3 aBaron 3.7 e-iBonnieblue 6.3 a-dCheri 5.0 a-gGlade 3.3 f-iKenblue 2.7 h-iNugget 4.0 d-iPark 4.0 d-iSydsport 5.0 a-gTouchdown 5.7 a-f______________________________________ Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (probability = 0.05). *Rating Scale: 1-9, 9 = no injury
TABLE 8______________________________________Comparison of rhizoctonia brown patch resistance of Ba 61-91 andother bluegrass varieties at West Lafayette, Indiana.Variety Brown Patch Ratings**______________________________________Ba 61-91 9.2Adelphi 8.2America 6.0Baron 6.8Birka 7.2Bristol 6.2Cheri 7.3Columbia 7.8Enmundi 8.0Fylking 3.2Kenblue 8.8Merion 9.2Merit 9.0Parade 7.5Scenic 8.2Sydsport 3.7Vantage 8.0______________________________________ *Rating Scale: 1-10, 10 = no damage
Drought tolerance is a characteristic that allows the plant to perform well and survive long periods of stress under hot, dry conditions. Ba 61-91 has demonstrated good levels of drought tolerance at various locations in the United States as will be seen from the tabulated comparative test results in Table 9.
TABLE 9______________________________________Comparison of drought tolerance ofBa 61-91 and other bluegrass varieties.Drought Tolerance Ratings* Belts- Wye ville, Mills, Burlingham, Blacksburg,Variety MD MD VT Va Mean______________________________________Ba 61-91 4.3 6.0 5.5 3.7 4.8 a-cAdelphi 5.0 5.0 5.7 3.5 4.7 a-eBaron 5.7 5.7 4.2 3.5 4.4 a-jCheri 3.7 4.7 5.5 3.7 4.4 a-jFylking 4.3 2.0 4.0 2.8 3.3 j-oGlade 4.0 3.3 3.8 3.2 3.6 f-oMerion 4.3 6.0 6.3 4.2 5.2 aNugget 3.3 2.7 3.3 3.5 3.3 k-oParade 4.0 4.7 3.5 3.0 3.6 f-oPark 3.0 3.7 2.8 4.3 3.5 g-oSydsport 4.3 4.3 5.2 3.5 4.3 a-kVantage 5.7 6.7 5.7 3.8 5.2 a______________________________________ Means followed by the same letter are no significantly different accordin to Duncan's Multiple Range Test (p = 0.05). *Rating Scale: 1-9, 9 = no injury
The color of Ba 61-91 turf is a desirable dark green color and is shown in comparison to other varieties in Table 10.
TABLE 10______________________________________Comparison of turf color of Ba 61-91 and other bluegrass______________________________________varieties.Turf Color Ratings* Fayetteville, Flagstaff,Variety Fayetteville, AR (1) AR (2) AZ______________________________________Ba 61-91 6.7 8.0 --A-34 4.7 5.0 5.3Adelphi 6.0 6.3 6.0Baron 7.0 8.0 6.3Birka 6.0 7.0 5.7Cheri 6.3 7.7 7.3Eclipse 6.0 6.7 --Enmundi 7.7 7.7 6.7Fylking 6.3 6.7 5.3Glade 7.7 7.7 6.3Kenblue 4.7 4.3 5.7Merion 4.7 4.0 6.7Merit 7.0 7.3 6.7Parade 4.3 4.0 5.3Sydsport 6.3 7.3 6.7LSD (.05) 1.4 1.4 1.5______________________________________Turf Color Ratings* Agassiz,Variety British Columbia Moscow, ID Fairland, MD______________________________________Ba 61-91 6.5 6.0 8.7A-34 6.0 5.0 8.3Adelphi 6.3 6.0 8.3Baron 6.3 5.7 8.0Birka 6.0 5.0 8.0Cheri 6.0 5.7 8.0Eclipse 6.3 5.7 8.3Enmundi 6.3 6.0 8.0Fylking 6.3 4.7 8.0Glade 7.0 6.3 8.7Kenblue 6.0 3.7 8.0Merion 5.7 5.0 8.0Merit 6.7 6.7 8.0Parade 6.0 5.3 8.0Sydsport 5.7 5.7 8.3LSD (.05) 0.8 1.2 0.6______________________________________ Turf Color Ratings* Variety Pullman, WA Mean______________________________________ Ba 61-91 8.0 7.4 A-34 8.0 6.0 Adelphi 8.0 6.7 Baron 8.3 7.1 Birka 7.7 6.5 Cheri 8.7 7.1 Eclipse 8.3 6.9 Enmundi 8.0 7.2 Fylking 7.3 6.4 Glade 7.3 7.3 Kenblue 7.7 5.7 Merion 8.0 6.0 Merit 8.3 7.2 Parade 7.3 5.8 Sydsport 8.0 6.9 LSD (.05) 0.8 0.4______________________________________ *Rating Scale: 19, 9 = dark green (1) High fertility test (2) Low fertility test
The various turfgrass characteristics described above are all taken into account in determining a turf quality rating. Great significance is attached to this rating because it is indicative of the general appearance, uniformity, and aesthetic value of a turf. Also, as all of the performance characteristics of the grass are taken into consideration, a good turf quality rating is an indication that the grass is free of disease and has good color, density and an acceptable texture. The turf quality ratings of Ba 61-91 from various times and locations in the United States are shown in Tables 11, 12 and 13 in comparison to several other varieties. Ba 61-91 produces a high quality turf at numerous locations in the United States. This, along with its high resistance to the major turf diseases as noted above, demonstrates the broad genetic adaptability of this grass.
TABLE 11______________________________________Turf quality of Ba 61-91 and other bluegrass varieties.______________________________________ Turf Quality Ratings* Missis- North Experi- sippi Bruns- Agassiz, ment, state, Mead, wick,Variety B.C. GA MS NE NJ______________________________________Ba 61-91 5.9 5.2 4.9 5.8 6.5Adelphi 5.5 4.2 3.9 5.5 6.2Baron 5.8 4.7 4.5 5.5 6.1Birka 6.0 4.9 4.4 5.7 5.6Cheri 5.7 4.4 4.7 5.3 5.7Eclipse 5.6 5.1 4.6 5.2 7.4Fylking 4.7 3.2 4.7 5.3 5.9Glade 5.8 4.9 3.9 5.7 6.7Kenblue 3.8 4.1 4.8 3.3 3.6Merion 5.7 4.0 4.9 4.7 5.9Merit 6.1 4.7 4.6 5.7 6.6Parade 5.3 4.8 4.9 5.2 5.5Ram I 5.5 3.3 4.4 5.3 6.1S.D. Common 2.7 3.7 5.1 3.5 3.0Sydsport 6.0 4.7 4.8 5.3 5.5Touchdown 5.1 4.3 4.8 4.7 6.5Vantage 4.4 1.0 4.3 5.0 3.5LSD (.05) 0.6 1.3 0.9 0.8 0.9______________________________________ Turf Quality Rating* King- Belts- Blacks- Black- Black- ston, ville, burg, stone, burg,Variety RI MD VA VA VA______________________________________Ba 61-91 5.9 6.6 5.2 5.5 5.6Adelphi 5.2 5.9 5.3 4.9 5.5Baron 4.9 5.3 4.9 5.3 5.1Birka 5.4 5.2 4.3 4.6 5.3Cheri 5.2 5.1 5.1 5.1 5.0Eclipse 5.8 5.9 5.8 6.2 5.1Fylking 4.6 4.9 4.0 4.7 4.4Glade 5.1 5.3 4.8 4.6 4.8Kenblue 4.2 4.9 3.9 4.2 3.8Merion 5.7 5.3 5.0 4.3 4.3Merit 5.3 6.1 5.2 5.1 5.6Parade 5.4 5.0 4.6 4.4 4.7Ram I 5.3 4.6 4.4 4.8 4.4S.D. Common 4.6 5.0 4.1 4.2 3.7Sydsport 5.8 5.8 4.7 5.3 4.8Touchdown 4.9 5.8 4.5 4.8 4.3Vantage 5.1 5.5 4.6 3.8 4.5LSD (.05) 0.9 0.8 0.7 0.8 0.9______________________________________ *Rating Scale: 19,9 = ideal turf
TABLE 12______________________________________Mean turfgrass quality at thirty-two locations in National BluegrassEvaluation Test of Ba 61-91 and other bluegrass varieties.Variety Mean Turfgrass Quality Ratings*______________________________________Ba 61-91 5.3Adelphi 5.2America 5.1Baron 5.2Birka 5.2Cheri 5.2Fylking 4.9Glade 5.3Kenblue 4.2Merion 5.1Merit 5.3Nugget 4.8Parade 5.1Ram I 5.2S.D. Common 4.2Sydsport 5.2Touchdown 5.1Vantage 4.6Wabash 4.9LSD (.05) .16______________________________________ *Rating Scale: 19, 9 = ideal turf
TABLE 13______________________________________ Mean turf quality of Ba 61-91 and other bluegrass varieties.______________________________________Mean Turf Quality Ratings* New Mt. Bruns- Kings- Fair- Wye Burling- Carmel, wick, ton, land, Mills, ham,Variety CT NJ RI MD MD VI______________________________________Ba 61-91 5.4 5.6 6.5 6.1 6.4 7.6Adelphi 5.5 6.6 6.6 6.8 6.2 7.3Baron 5.5 5.4 6.6 6.1 6.1 7.3Bonnie- 5.4 6.6 6.0 6.1 3.8 7.2blueFylking 5.7 5.5 6.4 6.2 3.6 7.0Glade 5.8 6.6 6.2 6.1 5.1 7.0Kenblue 5.7 3.2 5.0 5.5 5.3 6.1Merion 5.3 5.8 6.6 5.8 5.6 8.0Parade 5.7 6.4 6.5 6.5 6.3 6.9Park 5.8 2.9 5.3 5.4 4.9 5.5Vantage 5.7 5.6 6.1 6.5 6.2 7.3______________________________________Mean Turf Quality Ratings* Blacks- Newport Belts- Belts- Ithaca, burg, News, ville, ville,Variety NY VA VA MD(1) MD(2) Mean______________________________________Ba 61-91 6.7 5.6 4.1 6.7 6.0Adelphi 6.3 5.9 5.4 6.8 6.3 6.5 a-cBaron 6.4 5.3 5.1 6.0 6.4 6.1 g-rBonnieblue 6.2 5.6 5.6 6.4 6.0 5.9 k-pFylking 6.6 4.9 4.4 6.4 5.4 5.8 n-oGlade 6.4 5.3 5.4 6.2 5.7 6.0 i-nKenblue 5.4 5.4 5.1 5.2 4.6 5.1 t-uMerion 6.6 5.5 6.3 6.7 5.9 6.2 e-kParade 6.3 4.8 3.5 6.7 6.0 6.2 e-kPark 5.4 5.0 4.9 5.2 4.8 5.1 t-uVantage 7.1 5.5 5.9 6.4 5.9 6.2 f-i______________________________________ *Rating Scale: 1-9, 9 = ideal turf Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (p = 0.05). (1) Moderate maintenance (2) Low maintenance
Two additional characteristics of Ba 61-91 make this grass economically signficant. Table 14 indicates the high sod strength of Ba 61-91 in comparison to other varieties of bluegrass. High sod strength is required in the cutting, removal and installation of sod to increase the efficiency of these operations. Table 15 indicates the high seed yield capacity of Ba 61-91 in comparison to Victa and Merit which are known to be high seed yielding varieties, and to Vantage and Windsor which are known to have significantly lower seed yielding capacity. High seed yielding capacity is required for economical seed production. Table 15 also indicates heading and anthesis dates of Ba 61-91 in comparison to other varieties. These two characteristics, in addition to the morphological characteristics noted in Table 1 and seed size and count per pound in Table 16, afford further bases for distinguishing Ba 61-91 from other varieties of Kentucky bluegrass.
TABLE 14______________________________________Sod strength of Ba 61-91 and other bluegrass varieties atBlacksburg, Virginia.Variety Sod Strength Ratings*______________________________________Ba 61-91 5.3 a-hAdelphi 3.7 c-jBaron 3.7 c-jEnmundi 5.3 a-hGlade 5.0 a-iKenblue 1.3 i-jMerion 1.7 h-jParade 4.0 b-jPark 1.0 jSodco 3.3 d-jSydsport 4.0 b-jVantage 1.7 h-j______________________________________ Means followed by the same letter are not significantly different according to Duncan's Multiple Range Test (probability = 0.05). *Rating Scale: 9 = maximum sod strength
TABLE 15______________________________________Heading and anthesis date, seed yield per plant, and bushel weightof Ba 61-91 and other bluegrass varieties at Salem, Oregon.______________________________________Heading Date Anthesis Date1% 50% 1% 50% Year Year Year Year Year Year Year YearVariety 1 2 1 2 1 2 1 2______________________________________Ba 61-91 5/1 4/30 5/6 5/8 5/28 5/22 5/31 5/23Merit -- 5/3 -- 5/9 -- 5/21 -- 5/23Vantage 4/12 4/21 4/22 4/24 5/17 5/19 5/24 5/20Victa 5/3 5/8 5/6 5/12 5/24 5/21 5/27 5/23Windsor 4/19 4/23 4/29 5/7 5/22 5/19 5/27 5/23______________________________________ Seed Yield Bushel Wt. per Plant (gm) (lb./bu.)Variety Year 1 Year 2 Year 3 Year 3______________________________________Ba 61-91 16 38.6 42.5 25.5Merit -- -- 61.1 25.5Vantage 8 11.4 4.8 18.5Victa 38 57.6 45.4 25.0Windsor 11 5.1 2.7 27.5______________________________________
TABLE 16______________________________________Seed length and number of seeds per pound of Ba 61-91 and otherbluegrass varieties. Seed Length No. SeedsVariety (mm) per Pound______________________________________Ba 61-91 2.85 1,075,331Baron 2.72 1,181,474Fylking 2.99 1,091,716Kenblue 2.26 2,297,030Merion 2.43 1,968,636Newport 2.76 1,244,559Nugget 3.31 873,942Park 2.91 1,311,452Sydsport 2.46 1,964,088Vantage 2.51 1,555,848Victa 2.95 1,053,867Windsor 2.34 1,955,323______________________________________
Claims
  • 1. A variety of Kentucky bluegrass plant, substantially as shown and described, characterized particularly by a high level of resistance to diseases, a desirable dark green color throughout the growing season, a high quality and persistent turf under a wide range of environmental conditions and a high seed yielding capacity.