A useful measure of the photosynthetic efficiency of the plants is net assimilation (A) (mol CO2m−2
s
−1
).
In the present study, the year had a high influence on net
assimilation (Table 3). The average A value was lower in the
organic than in the conventional system only in 2010 (12.56 vs.
13.21 mol CO2m−2
s
−1
), while in 2011 the same values were
recorded in both cultivation systems (Table 3).