2007 Early Season Seed Corn Disease Survey

Table 3-5a, Pathogen numbers isolated from 30 seedlings
in Southern Ontario Seed Corn fields
Location
(F=Female
M=Male)		 Fusarium Trichoderma Cladosproium Pythium Rhizopus Mucor
Field #1F
3
9
 
 
 
 
Field #1M
4
6
 
 
1
 
Field #2F
2
5
 
 
 
2
Field #2M
9
4
 
1
 
6
Field #3F
2
6
 
1
 
 
Field #3M
4
4
 
1
 
 
Field #4F
2
4
 
 
 
1
Field #4M
3
6
 
 
 
2
Field #5F
4
9
 
3
 
 
Field #5M
8
 
 
1
 
1
Field #6F
3
7
 
1
 
 
Field #6M
4
5
 
 
 
 
Field #7F
 
6
 
 
 
 
Field #7M
3
2
 
1
4
2
Field #8F
3
7
 
 
 
 
Field #8M
5
7
 
 
 
 
Field #9F
5
4
1
2
 
 
Field #9M
2
7
 
2
 
 
Field #10F
3
6
 
1
 
 
Field #10M
3
5
 
1
 
 
Field #11F
9
 
 
2
2
 
Field #11M
7
1
 
 
1
 
Field #12F
13
1
 
2
 
 
Field #12M
1
 
 
1
 
 
Field #13F
9
 
 
 
 
 
Field #13M
11
 
 
 
 
5
Field #14F
8
1
 
 
 
 
Field #14M
5
7
 
 
1
2
Field #15F
6
2
 
1
 
2
Field #15M
6
1
 
1
3
 
Field #16F
11
1
 
 
1
 
Field #16M
10
1
 
1
 
 
Field #17F
12
2
 
1
 
1
Field #17M
8
 
 
3
 
 
Field #18F
7
1
 
 
 
1
Field #18M
5
1
 
1
2
1
Field #19F
5
6
 
2
 
5
Field #19M
3
1
 
 
 
4
Field #20F
5
9
 
 
 
 
Field #20M
4
4
 
 
 
1
Field #21F
7
2
 
 
 
3
Field #21M
3
4
 
 
 
2
Field #22F
5
2
 
1
 
1
Field #22M
3
2
1
 
 
 
Field #23F
3
4
 
 
 
1
Field #23M
5
 
 
 
 
4
Field #24F
10
 
 
 
1
 
Field #24M
10
 
 
 
4
 
Field #25F
6
4
 
 
 
1
Field #25M
6
 
 
 
 
5
Field #26F
11
6
 
 
1
 
Field #26M
6
1
1
 
 
4
Field #27F
12
 
 
 
 
1
Field #27M
9
1
 
 
 
4
Field #28F
9
2
 
 
 
1
Field #28M
8
2
 
1
 
5
Field #29F
10
3
 
1
 
2
Field #29M
7
1
 
 
 
2
Field #30F
7
 
 
 
2
 
Field #30M
9
 
 
 
3
 
Field #31F
8
1
 
 
 
3
Field #31M
9
1
 
 
2
 
Total
380
184
3
33
28
75


Table 3-5b, Pathogen numbers isolated from 30 seedlings
in Southern Ontario Seed Corn fields
Location
(F=Female
M=Male)		 Helminthosporium Alternaria Penicillium Sclerotinia Bacteria Tylenchus Ray-fungus
Field #1F
 
 
 
 
2
6
 
Field #1M
 
 
 
 
3
 
3
Field #2F
 
 
 
 
5
 
 
Field #2M
 
 
 
 
5
 
1
Field #3F
 
 
 
 
6
 
1
Field #3M
 
 
 
 
4
 
 
Field #4F
 
 
 
 
3
 
 
Field #4M
 
 
 
 
5
 
 
Field #5F
 
 
 
 
6
 
 
Field #5M
3
 
 
 
5
 
 
Field #6F
 
 
 
 
7
 
 
Field #6M
 
 
 
 
3
2
 
Field #7F
 
 
 
 
1
 
 
Field #7M
 
 
 
 
5
 
 
Field #8F
 
 
 
1
2
 
 
Field #8M
 
 
 
 
2
4
 
Field #9F
 
 
1
 
1
1
 
Field #9M
 
 
 
 
1
3
 
Field #10F
 
 
 
 
2
 
 
Field #10M
 
 
 
 
6
 
 
Field #11F
 
 
 
 
3
 
4
Field #11M
 
 
 
 
3
 
 
Field #12F
 
 
 
 
3
 
1
Field #12M
 
 
 
 
3
1
 
Field #13F
 
 
 
 
2
 
1
Field #13M
 
 
 
 
5
 
 
Field #14F
 
 
 
 
3
 
1
Field #14M
 
 
 
 
3
 
 
Field #15F
 
 
 
 
1
 
 
Field #15M
 
 
 
 
 
 
1
Field #16F
 
 
 
 
2
 
 
Field #16M
 
 
 
 
6
 
 
Field #17F
 
 
 
 
3
 
 
Field #17M
 
 
 
 
5
 
 
Field #18F
 
 
 
2
3
 
 
Field #18M
 
 
 
 
4
 
1
Field #19F
 
 
 
 
1
 
 
Field #19M
 
 
 
 
3
 
 
Field #20F
 
 
1
 
3
1
2
Field #20M
 
 
 
1
3
 
2
Field #21F
1
 
 
 
1
 
 
Field #21M
 
 
 
 
2
 
 
Field #22F
 
 
 
 
3
 
 
Field #22M
1
1
 
 
4
 
 
Field #23F
 
 
 
 
3
3
 
Field #23M
 
 
 
 
3
 
 
Field #24F
 
 
 
 
11
 
 
Field #24M
 
 
 
 
3
 
1
Field #25F
 
1
 
 
2
 
 
Field #25M
 
 
 
 
10
 
 
Field #26F
 
 
1
 
2
 
 
Field #26M
 
 
 
 
 
 
 
Field #27F
 
 
 
 
3
 
 
Field #27M
 
 
 
 
2
 
 
Field #28F
 
 
 
 
4
 
 
Field #28M
 
 
 
 
3
 
 
Field #29F
 
 
 
 
6
 
 
Field #29M
 
 
 
 
3
 
 
Field #30F
 
 
 
 
10
 
 
Field #30M
 
 
 
 
10
 
 
Field #31F
 
 
 
 
9
 
 
Field #31M
 
 
 
 
8
 
 
Total
5
2
3
4
124
21
19