Table 1. MANOVA results on bivariate elemental ratios for the years 2003 to 2007.

	May 2003	May 2004	May 2005	May 2006	May 2007
Block	0.543*	0.638***	0.356.	0.415*	0.636***
	(CN,NP,CP,CK,NK)	(CP,CK)	(CP,CK,NK)	(CP)	(CN,CP,CK,NK,PK)
sown diversity	0.079	0.095	0.152.	0.226*	0.301***
			(PK)	(NP,CP,PK)	(NP,CP,PK)
functional group richness	0.147	0.111	0.197*	0.167.	0.296***
			(CP,NK,PK)	(NP,CP)	(CN,NP)
Legume	0.525***	0.287***	0.578***	0.696***	0.706***
	(CN,NP,CK,NK,PK)	(CN,NP,CK,NK,PK)	(all)	(all)	(CN,NP,CK,NK,PK)
Grass	0.200.	0.320***	0.223*	0.385***	0.366***
	(CN)	(CN,CP,PK)	(CN,CP,CK)	(CN,CP,CK)	(CN,CP,CK)

For each factor, the Pillai Trace value and its significance level are given as well as all ratios for which the factor effect was significant at p<0.05. Significance levels: p<0.001 = ***, p<0.01 = **, p<0.05 = *, p<0.1 = .