2006 Early Season Seed Corn Disease Survey

Table 3-4a, Pathogen numbers isolated from 30 seedlings
in Southern Ontario Seed Corn fields
Location
(F=Female
M=Male)		 Fusarium Trichoderma Cladosproium Pythium Rhizopus Mucor Helminthosporium
Field #1F
2
10
1
2
 
 
 
Field #1M
1
3
6
4
 
 
 
Field #2F
4
15
1
1
 
 
 
Field #2M
1
6
3
 
 
 
 
Field #3F
3
10
 
3
 
 
 
Field #3M
3
3
3
 
 
 
 
Field #4F
3
10
4
 
 
 
 
Field #4M
3
11
 
 
 
 
 
Field #5F
4
3
 
 
2
 
 
Field #5M
7
4
1
3
2
 
 
Field #6F
4
1
 
1
1
 
2
Field #6M
9
1
2
1
 
 
1
Field #7F
8
7
 
2
 
 
 
Field #7M
5
9
3
 
 
 
 
Field #8F
7
3
 
3
 
 
 
Field #8M
7
8
 
3
 
 
 
Field #9F
8
12
 
 
 
 
1
Field #9M
5
11
 
 
1
 
 
Field #10F
5
2
4
3
 
1
1
Field #10M
3
5
4
2
 
 
2
Field #11F
3
 
5
 
3
 
 
Field #11M
4
 
2
 
1
 
 
Field #12F
7
8
 
 
 
 
 
Field #12M
2
5
 
 
 
 
 
Field #13F
5
6
3
 
1
 
1
Field #13M
4
1
2
 
1
 
 
Field #14F
6
2
3
 
 
1
 
Field #14M
 
 
14
 4
 
 
 
Field #15F
9
1
2
3
1
 
 
Field #15M
6
 
1
 
2
 
1
Field #16F
13
4
1
1
 
 
 
Field #16M
12
2
5
 
 
 
 
Field #17F
4
2
2
2
1
 
3
Field #17M
6
0
4
3
1
 
2
Field #18F
16
2
 
 
3
 
 
Field #18M
5
8
1
 
1
 
1
Field #19F
4
3
 
8
 
 
1
Field #19M
11
 
6
4
 
 
 
Field #20F
3
4
 
4
2
 
 
Field #20M
12
1
3
1
 
 
 
Field #21F
11
 
 
1
 
 
 
Field #21M
7
 
 
3
 
 
 
Field #22F
9
6
1
 
1
 
1
Field #22M
11
3
4
 
1
 
 
Field #23F
5
 
6
 
2
 
3
Field #23M
7
 
 
3
 
 
 
Field #24F
19
2
3
 
1
 
 
Field #24M
5
 
1
 
2
 
1
Field #25F
8
7
2
 
 
 
 
Field #25M
1
9
2
 
1
 
 
Field #26F
7
1
3
 
 
 
 
Field #26M
2
7
1
 
1
 
1
Field #27F
8
1
 
 
 
 
 
Field #27M
10
 
6
 
 
1
 
Field #28F
12
1
 
3
 
2
 
Field #28M
7
3
1
1
 
 
 
Field #29F
6
2
6
1
5
 
 
Field #29M
5
5
 
2
1
 
 
Total
364
230
122
72
38
5
22


Table 3-4b, Pathogen numbers isolated from 30 seedlings
in Southern Ontario Seed Corn fields
Location
(F=Female
M=Male)		 Alternaria Aspergillus Penicillium Rhizoctonia Sclerotinia Bacteria Tylenchus Ray-fungus
Field #1F
 
 
 
 
 
6
4
 
Field #1M
 
 
 
 
 
1
5
 
Field #2F
 
 
 
 
 
2
1
 
Field #2M
 
 
 
 
 
 
2
 
Field #3F
 
 
 
 
 
2
4
 
Field #3M
 
 
 
 
 
4
4
 
Field #4F
 
 
 
 
 
2
7
1
Field #4M
 
1
 
 
 
2
1
1
Field #5F
 
 
 
 
 
1
5
 
Field #5M
 
 
 
 
 
 
9
 
Field #6F
 
 
 
 
 
 
 
 
Field #6M
1
 
 
 
 
 
3
 
Field #7F
1
 
 
 
 
2
4
 
Field #7M
 
 
 
 
 
2
6
 
Field #8F
 
 
 
 
 
3
3
 
Field #8M
 
 
 
 
 
2
5
 
Field #9F
1
 
 
 
 
7
1
 
Field #9M
 
 
1
 
 
3
 
 
Field #10F
1
 
 
 
 
5
1
 
Field #10M
 
 
 
 
 
2
4
 
Field #11F
 
 
 
 
 
3
5
 
Field #11M
 
 
 
 
 
3
4
1
Field #12F
 
 
 
 
 
1
3
 
Field #12M
 
 
 
 
 
3
1
 
Field #13F
 
 
 
 
 
1
2
 
Field #13M
 
 
 
 
 
4
 
2
Field #14F
 
 
 
 
 
4
3
 
Field #14M
 
 
 
 
 
1
14
3
Field #15F
 
 
 
 
 
5
8
 
Field #15M
 
 
 
 
 
2
3
 
Field #16F
 
 
 
 
 
6
1
 
Field #16M
1
 
 
 
 
4
1
 
Field #17F
2
 
 
 
 
1
3
 
Field #17M
1
 
 
 
 
3
10
 
Field #18F
 
 
1
 
 
9
7
 
Field #18M
 
 
 
 
 
5
3
 
Field #19F
 
 
 
 
 
1
2
 
Field #19M
 
 
 
 
 
4
8
 
Field #20F
 
 
 
 
 
7
1
 
Field #20M
 
 
 
 
 
1
7
 
Field #21F
4
 
 
 
 
 
1
 
Field #21M
1
 
 
 
 
4
1
 
Field #22F
 
 
 
 
 
8
2
 
Field #22M
 
 
 
 
 
3
1
 
Field #23F
 
 
 
 
1
3
9
1
Field #23M
 
 
 
 
 
9
7
2
Field #24F
3
 
1
1
 
6
5
 
Field #24M
7
 
 
 
 
1
2
 
Field #25F
5
 
1
 
 
5
4
 
Field #25M
1
 
 
 
 
1
1
 
Field #26F
3
 
 
 
 
 
7
 
Field #26M
 
 
 
 
 
 
 
 
Field #27F
 
 
 
 
 
7
4
 
Field #27M
1
 
 
 
 
6
8
 
Field #28F
 
 
 
 
 
4
4
 
Field #28M
 
 
 
 
 
1
 
 
Field #29F
 
 
 
 
 
 
7
 
Field #29M
 
 
 
 
 
3
5
 
Total
33
0
5
1
1
175
223
11