Laboratory study of Shandong Agricultural University found that chitosan oligosaccharide degrades organophosphorus pesticides in tomato and leek, which indicates that chitosan oligosaccharide can reduce the amount of pesticide applied in vegetable production, but also reduce the pesticide residues in crops caused by pesticide application, which is beneficial to the green, healthy and sustainable development of agriculture.
By using tomato and leek as test materials (on behalf of dicotyledonous plants and monocotyledonous plants, respectively), phoxim and chlorpyrifos, which are widely used in the control of rhizobium nematode and chives, were used as organophosphorus pesticides, respectively. mg/l 25-100 of chitosan oligosaccharides were found to reduce the residues of phoxim and chlorpyrifos in both vegetables, with 50 mg/l concentration as the best.