Table 5: Basic statistics of principal components analyses using three main variables (TY, TYV, and CV%) and six supplementary variables representing Cycle 1 and Cycle 2 of each variable in a long-term field experiment and in each of the conventional and organic cropping systems.

VariableLong-term experiment Conventional system Organic system
Factor 1Factor 2Factor 1Factor 2Factor 1Factor 2
62.9%36.3% Comm.60.139.4Comm.52.247.1 Comm.
LoadingsLoadingsLoadings

TY (Mg ha−1) 0.980.99 0.11 0.990.69 0.71 0.99
TYV (Mg ha−1) 2 0.64 0.99 0.82 0.99 0.93 0.99
CV% 0.57 0.81 0.99 0.99 0.18 0.99
 TY-Cycle 1 0.830.88 0.19 0.810.57 0.58 0.65
 TY-Cycle 2 0.0020.82 0.87 0.0030.75 0.57 0.60 0.69
 TYV-Cycle 1 0.70 0.80 0.61 0.88 0.71 0.68
 TYV-Cycle 2 0.21 0.62 0.86 0.74 0.12 0.60 0.37
 CV%-Cycle 1 0.42 0.79 0.79 0.83 0.22 0.77
 CV%-Cycle 2 0.15 0.37 0.16 0.15 0.04 0.17 0.20

Comm.: communality.