Abstract:

Seven new rare earths berberine complexes were synthesized and developed. The complexes are characterized the infrared spectra. Antibacterial of 4 kinds of difficult controllable crops bacterias (Clavibacter Michiganensis Subsp., Sunflower Hyphal Cluster Germ, Fusarium Oxysporum and Carrot Peutz bacteria) of the complexes were studied by inhibition zone and minimum inhibitory concentration test. Acute oral and acute dermal toxicity test were adopted in this experiment. The results indicated that 7 complexes were low toxicity pesticides and had good antimicrobial activity. To Sunflower Hyphal Cluster Germ, Minimum inhibitory concentration was 0.125 mg/mL. The best antimicrobial activity to Clavibacter Michiganensis Subsp. was Ce(NO3)3(B)3 and Gd(NO3)3(B)3. Their minimum inhibitory content was 0.125 mg/mL. La(NO3)3(B)3, Gd(NO3)3(B)3 and Y(NO3)3(B)3 to Fusarium Oxysporum had a better antimicrobial activity, which minimum inhibitory concentration was 0.5 mg/mL. The best antimicrobial activity to carrot Alternaria was Gd(NO3)3(B)3, its minimum inhibitory concentration was 0.5 mg/mL. Seven new rare earths berberine complexes were widespread and efficient pesticides with low toxicity.