Benazolin-ethyl is a specific post bud conductive herbicide with internal absorption conductivity. After application, the plant is absorbed and transported to the whole plant through the leaves. The mode of action is the same as that of 2 methyl 4 chloride, but the efficacy is slow. After receiving the drug, the growth of sensitive plants stagnated, the leaves were stiff green, thickened and rolled back, the new leaves were twisted, the internodes were shortened, and finally died, which was similar to the symptoms of hormone herbicides. It can be degraded into inactive substances in drug-resistant plants, which is safe for rape, wheat, alfalfa and other crops. High temperature and fast action; The temperature is low and the effect is slow. Benazolin-ethyl was transformed into free acid in soil and quickly degraded into inactive substances, which had no effect on subsequent crops. The efficacy of Benazolin-ethyl against broad-leaved weeds increased with the increase of dose. After application, rape sometimes had different degrees of drug damage symptoms, and its leaves were wrinkled. With the increase of dose and the later the application time, the more obvious the symptoms of rape, which can be recovered after 20 days. Benazolin-ethyl is mainly used to control annual broad-leaved weeds, such as Zoysia, Zoysia, sparrow grass, ragweed, field mustard, jute, amaranth, Xanthium sibiricum, quinoa, Datura, etc.
Benazolin-ethyl is a herbicide for removing broad-leaved weeds after rape seedlings. The drug resistance of rape is affected by leaf age, air temperature, rain and other factors. It has the best effect after the broad-leaved weeds are basically in place. It can be mixed with common post seedling herbicides of gramineous weeds for one-time control. It has no effect on non seedling weeds. When the broad-leaved weeds are all out, the rape reaches 6 leaf age. It is the safest for rape to avoid low-temperature weather. It should not be used too early in the 2 ~ 3 leaf stage of direct seeding rape. According to the application experience, adding an appropriate amount of vegetable oil can improve the permeability of Benazolin-ethyl. According to the emergence peak of weeds in the field and the drug resistance of rape varieties, the optimal application period was determined. Chinese cabbage winter rape with weak drug resistance should be in the late overwintering or green returning stage of rape (leaf age 6 ~ 8 leaves) can avoid pesticide damage to rape. For Brassica napus with strong drug resistance, it should be applied before winter according to the local weed emergence law. For example, in areas where there is a grass peak before and after winter, it should be applied after the grass peak after winter to ensure good efficacy.
Benazolin-ethyl has good compatibility, and can basically be mixed with gramineous weed herbicides. Benazolin-ethyl should be applied at a temperature above 8 ℃. There is no obvious low temperature within one week after application, and it is within a suitable temperature range. The higher the temperature, the better the effect.
Post time: Nov-25-2021