Effect
FH Attivus treated Common bean, cv. IPR Campos Gerais, showed no significant difference in growth, increased SPAD index, increased CO2 assimilation rate, increased stomatal conductance, decreased internal carbon concentration, increased carboxylation efficiency, increased water use efficiency, increased photosystem II effective quantum yield, increased electron transport rate, increased photochemical extinction coefficient, decreased lipid peroxidation, and increased catalase content, at all combinations of formulation and application rate, at three days after biostimulant application, compared to untreated plants. Biostimulant treated plants also generally showed increased transpiratory rate, increased Photosystem II quantum yield, increased enzyme activity superoxide dismutase, increased peroxidase content, increased ascorbate peroxidase content in most combinations of formulation and application rate, at three days after biostimulant application, compared to untreated plants.