Research Article
Corn-Soybean Rotation Systems in the Mississippi Delta: Implications on Mycotoxin Contamination and Soil Populations of Aspergillus flavus
Table 4
Seed quality parameters relating to mycotoxin contamination in corn and soybean averaged among rotations 2005 to 2008.1
| Year | Crop | Aspergillus propagules Log (10) CFU/g | Aspergillus infected seed % | Toxigenic isolates | Aflatoxin (ng/g) | Fumonisin (μg/g) |
| 2005 | Corn | 1.93 a | 33.6 a | 28.5 a | 16.7 a | 3.6 a | Soybean | 1.30 b | 7.0 b | 15.9 b | 2.3 b | 0.1 b | LSD | 0.30 | 10.0 | 12.1 | 4.2 | 1.0 |
| 2006 | Corn | 3.33 a | 78 a | 77 a | 37.1 a | 0.9 a | Soybean | 3.33 a | 66 b | 7 b | 0.1 b | 0.2 b | LSD | NS | 8 | 12 | 1.2 | 0.3 |
| 2007 | Corn | 2.93 a | 44 a | 17 a | 2.4 a | 0.2 a | Soybean | 2.63 b | 30 a | 10 a | 0.6 a | 0.1 a | LSD | 0.22 | NS | NS | NS | NS |
| 2008 | Corn | 3.99 a | 93 a | 46 a | 54.8 a | 3.5 a | Soybean | 2.72 b | 36 b | 31 b | 6.8 b | 0.2 b | LSD | 0.25 | 12 | 10 | 2.1 | 1.0 |
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1Means within a column in each year for each variable followed by the same letter are not significantly different at the 5% level.
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