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Elling, Laddie J.

University of Minnesota Digital Conservancy

FSA /37' 
AGRONOMY FACT SHEET 
No.37 
LADDIE J. ELLING 
Sixty-five Kentucky Bluegrass varieties grown In experi-
mental trials were seed in 1972, 1973, 1975, 1976, 1977, or 
1979 near Roseau, Minnesota. Seed for these trials was sub-
mitted by seed company representatives, growers, or others 
interested in the seed production potential of the variety. 
Each entry was seeded in 1 x 4 meter plots in three 
replications except in 1976 when two replications were seeded. 
Broad-leaved weeds were controlled when 2, 4-0 and/or 
dicamba and 500 lb/A of 20+10+10 fertilizer was appl led in 
October each year. This rate is considered satisfactory for 
screening but may be less or nore than optimum for individual 
varieties. A square meter sample was harvested from each plot, 
dried, and transported to St. Paul for threshing and pro-
cessing. The residue was normally rerooved by desiccanting the 
plant material, letting It dry and then burning it. The desic-
cants were paraquat with surfactant or dinoseb plus oil. 
The data reported are as follows: 
Maturity is the average harvest date; al I dates are for 
July. Two varieties, Holt and Troy, are one or two days 
earlier than Park. Al I others are equal or later than Park, 
some as much as 12 days later. 
JAN 21 ']983 
ST. PAUL CAMl•u.., ,_ --
Performance of Kentucky 
Bluegrass Varieties 
Lodging rating is the average over tests and years, where 
represents no lodging and 5 equals severe lodging. The fer-
t.i I izer rate may have causes excessive lodging as it is not 
optimum for al I varieties. 
Plant height at harvest reported in inches, is the 
distance from ground level to the top of the panicle. The 
range in height was from 15 inches for Skofti to 36 for Troy; 
Park averaged 32 inches. In lodged material the culms were 
pulled erect for measurement. 
Seed yields are reported as a percent of test average for 
the years a given trial was harvested. Park produced 155% of 
the test average for the two years harvested from the 1972 
seeding. This yield of Park was 644 lb/A. The lowest average 
yield for al I trials was 40% for Welcome and the highest was 
157% for Enprlma. The least significant differences are large, 
but generally, the year-to-year yields are consistent for dif-
ferent trials. When the difference between two yields exceeds 
the LSD, the varieties are judged to have different yield 
potential. Test average seed yields In pounds per acre ranged 
from 198 for the test seeded in 1975, to 561 for the 1979 
seeding.- Dry and warm weather in 1976 and 1977 caused I ower 
than normal seed yields reported for the 1973 and 1976 
seedings. 
Harvest date, maturity, lodging, harvest height, and seed yields 
for 65 Kentucky Bluegrass Varieties, 1972-1981. 
Year test seeded 
Harvest 
Harvest height in Data 1972 1973 1975 1976 1977 1979 Average 
Var leties date* Lodging inches years (2)+ (2) (3) (2) (2) (1) 
-------------------Yields % of test average--------------------
A-20 (Warrens) 7-15 1.8 24 4 34 49 42 
Adelphi 7-13 1.3 26 9 73 81 77 94 81 
Aqul la 7-11 1.9 23 10 85 63 128 118 74 93 
Arista 7-12 1.3 20 10 124 144 128 124 118 130 
Aspen 7-13 1,9 27 6 56 118 128 89 
Ban ff 7-14 4.3 27 1 110 110 
Baron 7-11 1.1 23 8 139 122 146 177 141 
Bensun 7-13 2.4 30 4 84 85 85 
Birka 7-11 1.0 22 7 89 65 74 74 
Bonnie blue 7-12 1.o 22 5 49 66 56 
Cheri 7-11 1 .o 24 7 140 108 123 126 
Claudia 7-11 2.0 27 1 105 105 
Cougar 7-9 1.0 20 5 105 116 109 
Del ft 7-6 1 .8 26 129 138 115 129 
Oormie 7-8 2. 7 25 109 109 
Eda 7-12 1.0 18 4 74 69 72 
Enmund i 7-11 1.5 24 8 83 87 101 98 90 
Enoble 7-12 2.3 24 9 100 86 127 97 101 
Enprima 7-9 1. 7 24 9 144 213 155 87 157 
Entopper 7-15 2.0 25 1 115 115 
Escort 7-14 5.0 27 83 83 
Fanfare 7-10 2.2 30 112 BO 84 95 
Fylking 7-5 1.3 20 83 35 75 60 
Galaxy 7-9 1.0 21 84 71 79 
Gardi 7-16 1. 7 21 87 74 83 
UNIVERSITY OF MINNESOTA, U.S. DEPARTMENT OF AGRICULTURE, AND MINNESOTA COUNTIES COOPERATING 
Harvest 
Harvest height in Data 1972 1973 1975 1976 1977 1979 Average 
Varieties date* Lodging Inches :tears (2)+ (2) (3) (2) (2) (1) 
------------------Yields % of test average------------------
Garon imo 7-10 2. 1 28 3 144 156 148 
Glade 7-11 1 .5 21 8 56 44 81 79 61 
Golf 7-9 1.0 21 7 117 130 121 124 
Granada 4-14 2.8 27 3 83 78 81 
Holt 7-3 1.3 23 1 86 86 
Kimono 7-13 2.2 24 3 95 96 95 
Majestic 7-10 1.0 20 5 67 95 78 
Metor 7-9 2.3 23 1 64 64 
Merion 7-6 2.0 25 5 86 106 94 
Monopoly 7-14 3. 7 28 7 125 125 98 117 
Mosa 7-14 1.8 26 3 95 96 95 
Nakri ka 7-13 1.9 26 4 76 111 91 
Newport 7-10 2. 1 28 7 179 138 182 168 
Nugget 7-12 1.1 18 8 90 70 103 78 87 
Olympr lsp 7-10 2.3 28 9 120 147 123 160 139 
Orna 7-12 1.5 26 7 92 84 80 86 
Parade 7-13 2.6 27 10 100 126 121 113 106 115 
Park 7-5 3.8 31 12 155 129 155 135 93 116 134 
Pennstar 7-12 1.8 20 9 46 50 62 87 61 
Prato 7-7 1.0 21 5 90 80 86 
Primo 7-6 2.3 27 7 137 166 133 148 
Ram I 7-11 1.4 21 6 62 96 122 83 
Ramm II 7-10 1.0 20 5 75 86 79 
RU-128 7-9 1. 7 26 7 109 142 114 120 
RU-154 7-18 2.2 27 2 118 118 
RU-178 7-12 1 .3 24 7 67 101 80 80 
Rugby 7-12 2.5 28 5 123 103 120 114 
Skofti 7-13 1.1 15 4 27 60 44 
Sodco 7-13 1.6 24 9 88 81 68 86 79 
Sydsport 7-13 1.0 23 7 98 129 101 112 
Tivoli 7-17 1. 7 20 3 66 91 74 
Touchdown 7-10 2. 1 27 8 75 79 40 49 63 
Trampas 7-9 1.0 19 5 86 105 94 
Trenton 7-15 2.6 28 3 118 92 109 
Troy 7-4 2.0 34 3 127 82 112 
Turnier 7-14 1.1 24 4 118 93 106 
Vanessa 7-10 1 .3 26 3 82 125 96 
Vantage 7-10 3.0 29 5 54 78 64 
Victa 7-9 1.0 21 5 136 152 142 
Welcome 7-9 2.3 23 1 40 40 
L.s.o. at 5% level 32 NS 30 38 28 26 
Average yield in lb/A 416 269 198 561 458 559 
* Al I dates in July The information given in this publication is for educational purposes only. Reference to commercial products or trade names is made with the under· 
standing that no discrimination is intended and no endorsement by the Minnesota Agricultural Extension Service is implied. 
.. 1= no lodging, 5= severe lodging Issued in furtherance of cooperative extension work in agriculture and home economics, acts of May 8 and June 30, 1914, in cooperation with the 
U.S. Department of Agriculture. Norman A. Brown, Director of Agricultural Extension Service, University of Minnesota, St. Paul, Minnesota 55108. 
+ Number of years harvested 
The University of Minnesota, including the Agricultural Extension Service, is committed to the policy that all persons shall have equal access to its 
programs, facilities, and employment without regard to race, creed, color, sex, national origin, or handicap. 5 cents 
UNIVERSITY OF MINNESOTA 
llllll~llllllll~l~lll!llllll~ll~ll~III 
3 1951 003 466139 E 


Performance of Kentucky bluegrass varieties

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Performance of Kentucky bluegrass varieties

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