Effective ingredient: natural alkaloid: berberine>4% Characteristic: highly bioactive plant-derived bactericide (control bacteria); low toxicity and friendly to environment. Target diseases: plant disease caused by bacteria, especially soft rot, cotton angular leaf spot, bacteria of rice leaf blight, potato ring rot bacteria, tobacco bacterial wilt, bacterial angular leaf spot, etc. This product used advanced formulation processing technology, it has significant therapeutic effect on bacterial diseases, specially bacterial blight, bacterial wilt and so on.