The effect
of cropping system on LAI is also shown in Fig. 1, which shows
the SPAD values recorded in the 2 years, and in the supplementary
Figs. S2, S3, S4, S5 and S6, which report the correlations among the
principal parameters investigated in this study during the growing season, and that shows different slopes of regression equations
in the two cropping systems. In these correlations, the trend of
LAI assumes consistently lower values in organic system than in conventional one.