The photosynthetic efficiency of photosystem II (Fv/Fm) was less
modified in S. officinalis than in L. dentata by the bacterial
treatments and/or fermented agrowaste (Fig. 2C). This value
dropped by the treatments applied (bacteria or fermented
agrowaste) only in L. dentata. However, in fermented agrowaste
amended soil it was increased by the bacteria inoculation. Again,
B. thuringiensis decreased photosynthetic efficiency in L. dentata
without fermented agrowaste in concordance with the reduction
of stomatal conductance (Fig. 2B). However, the reduction of
stomatal conductance in L. dentata caused by B. megaterium +
fermented agrowaste (Fig. 2B) was not reflected in the photosynthetic
efficiency (Fig. 2C).