Clopyralid  CAS 1702-17-6 

 It is mainly absorbed by plant roots and leaves and then conduction inside the plant, so its conduction

performance is stronger. To weed after applying pesticide, it is absorbed by plant leaves or roots, and

quickly move up and down the conduction in the plant to the whole plant. Low concentration of chlorine

pyridine acid can stimulate plant DNA, RNA and protein synthesis leading to cell division and disorderly

growth out of control, and finally lead to bundle are destroyed; A high concentration of dichloro pyridine

acid can inhibit cell division and growth.