Synergistic effects of three synergists on herbicides

To study the synergistic effects and synergistic mechanism of three synergists on bentazon, glufosinate-ammonium and haloxyfop-P-methyl, and screen out the synergist with the best performance, the static surface tension (SST), dynamic surface tension (DST), dynamic dryness and contact angle of herbicides, synergists and synergists-added herbicides were investigated and adhesion force and adhesion work were calculated. The physicochemical performance tests revealed that the synergist based on isomeric alcohol ethoxylates performed best in reducing SST, accelerating the reduction of DST and reducing the contact angle, and the synergist based on penetrant T was the second most effective, while the synergist based on methyl oleate had a slight effect and was the worst. The data of adhesion force and adhesion work showed that the herbicide solution containing isomeric alcohol ethoxylates based synergist had stronger adhesion on the leaves and was easier to retain and wet the leaf epidermis. Meanwhile, the results of the indoor efficacy evaluations also confirmed that the synergist isomeric alcohol ethoxylates that had the best physicochemical performance exhibited the best control efficacy when added to herbicides as the main component of a synergist.