Covariance Structures in Conventional and Organic Cropping Systems

Table 4

Significant (P < 0.05) correlation coefficients between cumulative yield, CumY, temporal yield variance, TYV, and coefficient of variation, CV%, for 16 treatment combinations in conventional (CNV) and organic (ORG) cropping systems of a long-term experiment.

Treatment	CumY-TYV		CumY-CV%		TYV-CV%
System	CNV	ORG	CNV	ORG	CNV	ORG
2 Yr CT+N			−0.92			0.80
2 Yr CT−N		0.80			0.74
2 Yr ST+N			−0.82		0.83	0.91
2 Yr ST−N		0.71		−0.79
4 Yr CT+N	0.95	0.90		0.76		0.94
4 Yr CT−N	0.85	0.70			0.64	0.72
4 Yr ST+N	0.71				0.56	0.88
4 Yr ST−N	0.83					0.85