Efficacy of Amaranthus tricolor extracts were investigated as new bacterial antifungal components. Antibacterial substances were successively extracted from A. tricolor by ethyl acetate. Inhibition zone method was used to study the antibacterial activity of the extract against five phytopathogenic bacteria, i.e., Xanthomonas axonopodis pv. citri, Xanthomonas oryzae pv. oryzicola, Ralstonia solanacearum, Acidovorax avenae subsp. sitrulii, and Erwinia carotovora. At the same time, the factors influencing antibacterial activity such as extraction ...
