Introduction

The mixed formular of Clopyralid + Picloram has a good control effect on annual broadleaf weeds in spring rape fields and is safe for rapeseed. It can be promoted and used in plateau areas with drought and large temperature differences between day and night. If soybeans, potatoes and other crops are planted in the next crop, the dosage can be appropriately reduced. With the ban of ethametsulfuron, Clopyralid + Picloram will have a good promotion prospects in controlling broadleaf weeds in rape fields.
Clopyralid is a synthetic plant growth hormone with long-lasting efficacy and strong systemic effects of up-and-down conductivity. And this conduction is bidirectional, that is to say, it can be transmitted to the roots through the stems and leaves, and it can also be transmitted to the stems and leaves through the roots. Its herbicidal ingredients remain in the weeds for a longer period of time, thus achieving the effect of preventing weeds from rebounding after application. It can be used to control broadleaf weeds in crop fields such as barley, wheat, oats, corn, asparagus, sugar beet, flax, mint, strawberry, cruciferous vegetables, and grass lawns.
Picloram is a halopyridine hormone herbicide that can be absorbed and transmitted by plant leaves, roots and stems. It can quickly conduct to the growth point and inhibit the respiration and nucleic acid metabolism of the mitochondrial system, causing deformity, wilting, defoliation, necrosis of the upper part of the plant, blockage and discoloration of the xylem vessels, and ultimately death. It is effective against most dicotyledonous weeds (except Brassicaceae), and has outstanding effects on root weeds such as spinach, small bindweed, and older gray cabbage.

Using scope and method