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NDSU Canola Blackleg Nursery-Langdon - (page 1) Carl Bradley and Bryan Hanson
Disease Severity 
Company Variety Severity  Incidence   Index 
    (0-5) (%) (0-100)
Agriprogress/Lembke CH586 1.7 90 32
Agriprogress/Lembke AP7910 1.7 80 33
Agriprogress/Lembke AP 7978 2.9 100 58
Agriprogress/Lembke AP 2227 1.7 93 32
Agriprogress/Lembke APS 12 2.2 100 44
Bayer Crop Science EXP. 9060309 1.7 95 33
Bayer Crop Science EXP. 9060400 1.5 98 29
Bayer Crop Science EXP. 2050602 1.1 78 18
Bayer Crop Science EXP. 2050603 2.0 100 40
Bayer Crop Science EXP. 1040001 2.3 100 45
Bayer Crop Science EXP. 1040807 1.6 93 31
Bonis & Co. BC 937-101 2.8 100 55
Bonis & Co. BC 937-104 2.8 98 54
Bonis & Co. BC 937-140 3.4 100 68
Bonis & Co. BC S303L 3.5 100 70
Bonis & Co. BC S305L 2.8 85 52
Bonis & Co. BC 937-54 2.7 100 55
Bonis & Co. BC 937-55 2.2 100 45
Bonis & Co. BC H501R 1.8 90 35
Bonis & Co. BC H503R 2.5 100 50
Croplan Genetics HyClass 601 2.6 100 52
Croplan Genetics Oscar 1.4 83 27
Croplan Genetics Minot 2.7 95 52
Croplan Genetics Crosby 2.7 100 53
Croplan Genetics HyClass 767 2.5 100 50
Croplan Genetics HyClass 2061 2.3 98 44
Croplan Genetics HyClass 905 2.2 93 43
Croplan Genetics HyClass 910 2.4 100 47
Dekalb SW5207 1.6 98 32
Dow Nex830CL 1.1 90 20
Dow Nex824CL 1.3 93 25
Interstate Seeds Hylite 618 CL 1.2 88 22
Interstate Seeds Hyola 420 2.5 100 51
Interstate Seeds Hyola 440 0.9 80 16
Interstate Seeds Hyola 505 RR 1.2 85 22
Interstate Seeds SW Marksman 2.3 95 45
Interstate Seeds SW Patriot 1.4 78 24
Interstate Seeds SW G5235 RR 1.8 95 35
Interstate Seeds Hyola 357 Magnum 3.7 100 75
Interstate Seeds SW PL-7835 RR 1.8 85 33
Interstate Seeds Z2409 RR 1.6 98 31
Interstate Seeds SW 5246 RR 1.7 100 34
Interstate Seeds HyLite 225 RR 2.0 95 39
Monsanto X402 2.9 100 58
Monsanto X403 1.2 98 24
Monsanto X465 1.2 75 21
Monsanto X500 3.7 100 74
NDSU Canola Blackleg Nursery-Langdon - (page 2) Carl Bradley and Bryan Hanson
Disease Severity 
Company Variety Severity  Incidence   Index 
    (0-5) (%) (0-100)
Monsanto X515 1.3 93 25
Monsanto X545 1.1 80 18
Monsanto X555 1.9 95 37
Monsanto X565 1.4 93 25
Monsanto X445 0.9 68 14
Monsanto X505 1.2 85 23
Monsanto X525 1.0 70 17
Pioneer 45H21 1.7 100 34
Pioneer 46H23 1.6 88 31
Check AC Excel 2.6 90 50
Check Defender 1.8 95 35
Check Q2 1.6 90 29
Check Westar 3.6 100 73
P > F   0.0001 0.0816 0.0001
LSD 0.01 1.0 NS 23.0
LSD 0.05 0.8 NS 17.0
LSD 0.10 0.7 17.0 15.0
C.V.   28.2 15.7 32.2
Plots were planted on 3 June, 2004 in Langdon, ND
Plots were seeded at a rate of 14 seeds/ft2
Statistical design was a randomized complete block with 4 replications
Plots were evaluated for blackleg on 12 August, 2004
Blackleg Disease Severity was rated by cutting 10 stems per plot and rating on a 0 to 5 scale, where:
0= No penetration or noticeable infection of the stem
1= 1/4 of the stem circumference infected; lesion superficial
2= 1/2 of the stem circumference infected; some penetration
3= 3/4 of the stem circumference infected; significant penetration
4= stem completely girdled, but intact at the base; significant penetration
5= stem girdled at the base, constricted, dry and brittle, may be completely severed; plant dead
Disease Severity index (DSI) was calculated by:  (mean disease severity X % incidence)/5


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