in the P0 treatment throughout the entire crop cycle
(Figure 6a). The maximum relative difference of cumulated
PARa between the P0 and P1.5 treatment was
observed between 400 and 600 C days, i.e. between
the 8.5-leaf and 15-leaf stages in P1.5 (Figure 6b). At
this stage, the cumulated PARa in P0 was less than
50% of that observed in the P1.5 treatment. The relative
difference became lower thereafter. At maturity the
cumulated PARa was 9–10% lower in P0 compared to
P1.5 (Figure 6b).