Corn-Soybean Rotation Systems in the Mississippi Delta: Implications on Mycotoxin Contamination and Soil Populations of Aspergillus flavus

Table 3

Probability values of seed quality parameter by year as affected by block, crop, and rotation within crop¹.

Year	Source	Aspergillus; flavus propagules (log transformed)	Aflatoxigenic propagules	Aspergillus-infected seed (%)	Aflatoxin concentration (ng/g)	Fumonisin concentration (μg/g)	Aflatoxin; concentration log transformed
2005	Block	0.57	0.58	0.36	0.34	0.088	^*
	Crop	^***	^*	^***	^***	^***	^***
	Rotation	0.34	0.15	0.60	0.95	^*	0.97
2006	Block	0.75	0.88	0.66	0.60	0.76	0.68
	Crop	0.97	^***	^**	0.13	^**	^**
	Rotation	0.39	0.84	0.23	0.81	0.93	1.0
2007	Block	^**	0.31	0.43	0.42	0.47	0.17
	Crop	^*	0.22	0.17	0.34	0.20	0.41
	Rotation	0.61	0.59	0.53	0.48	^***	0.56
2008	Block	0.95	0.94	0.22	0.16	0.45	0.081
	Crop	^***	^**	^***	^*	^***	0.069
	Rotation	0.79	0.19	0.41	0.34	0.78	0.90

¹Levels of significance were as follows: ^∗𝑃≤0.05; ^∗∗𝑃≤0.01; ^∗∗∗𝑃≤0.001.