Transcript Fusarium Crown Rot

Fusarium crown rot
(foot rot)
• Caused by Fusarium spp.
– Same fungus that causes scab
• Hosts include wheat, barley, oats, corn,
grasses
Fusarium crown rot history
• Ubiquitous; probably present in the
original prairie soil infecting native
grasses
• Early 1900s H.L. Bolley “wheat-sick soil”
– Campaign across ND to use good seed
and practice rotation
– Posters in store windows
Yield loss from Fusarium crown rot
• Long-term annual estimates of yield
loss in Saskatchewan and Manitoba
– 5-6% spring wheat
– 11% barley
• North Dakota estimates were similar,
9.5% yield loss for durham
Fusarium crown rot trials
Huntley, 2005
Variety
Alsen
Choteau
Explorer
Hank
Knudson
McNeal
MTO245
NorPro
Outlook
Reeder
Yield (bu/a)
Yield (bu/a)
w/o Fusarium
w/ Fusarium
59.7
55.0
48.6
58.2
59.5
51.2
64.5
56.6
61.5
57.9
52.8
42.8
43.8
47.6
47.1
45.8
49.7
44.6
53.4
45.2
% Yield
reduction
11.5
22.1
9.8
18.3**
20.8
10.2
22.4
21.0
13.1
21.7
**An outlier was removed. If included, % yield reduction would be 11.7%
Fusarium crown rot trials
Huntley, 2005 Durham wheat
Variety
AC Avonlea
Ben
Kyle
Lebsock
Maier
Monroe
Mountrail
Utopia
Vic
Ward
Yield (bu/a)
Yield (bu/a)
w/o Fusarium
w/ Fusarium
53.4
49.4
32.3
53.1
51.4
54.7
46.7
45.4
47.2
52.8
40.2
37.4
27.3
40.4
38.5
45.5
38.2
41.6
37.1
39.7
% Yield
reduction
25
24
16
24
25
17
18
8
21
25
**An outlier was removed. If included, % yield reduction would be 11.7%
Future: Fusarium crown rot control
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Seed treatment
Late seeding
Don’t over-fertilize
Crop rotation to non-host: DON’T
PLANT CORN!!!
• Plant tolerant varieties
Fusarium crown rot
(foot rot)
• Caused by Fusarium spp.
– Same fungi that cause scab
• F. graminearum, F. culmorum, F. pseudograminearum
• Hosts include wheat, barley, oats, corn,
grasses
• Residue-borne
• Seed-borne