Individuation of the best agronomic practices for organic durum wheat cultivation in the Mediterranean environment: a multivariate approach

Table 2 Correlation coefficients between active quantitative variables, supplementary qualitative variables, and the first two Principal Components (PC), with indication of the explained variance

Variable	PC1	PC2
Quantitative active variables
Yield	− 0.05ns	0.96***
GPC	0.59***	0.34***
Plant N content	0.81***	0.37***
Plant dry weight	0.91***	0.03ns
HI	− 0.70***	0.70***
Qualitative supplementary variables
Growing season	0.40***	0.58***
Variety	0.49***	0.60***
Organic fertilizer	0.11ns	0.11ns
Selenium application	0.03ns	0.18***
Explained variance	46.4%	33.5%

ISSN: 2048-7010