The following is to temporarily rule out the quality problems of the medicine and talk about it from the perspective of application technology
Preparation of mother liquor: Because most herbicides are powders, first pour the powder into a wide mouth before use In the container, add a small amount of water and pour it while stirring to prepare the mother liquor.
Pharmaceutical preparation: When using herbicides, be sure to dilute it with enough water. First, pour the mother liquor into the sprayer according to the required amount, add a small amount of water, shake well, then add water to the required amount and mix thoroughly.
Pharmaceutical spraying: When spraying chemicals, it is required not to re-spray or leak. If the adjacent plots are crops that are sensitive to herbicides, isolation measures should be taken to avoid spraying when there is wind to avoid damage to the crops in the adjacent plots.
It is best to use dedicated equipment for spraying herbicides to avoid damaging crops when spraying other pesticides. For example, the application of 2-tetrakis-D-butyl ester and clomazone causes phytotoxicity to adjacent broadleaf crops and trees.
Herbicide sensitivity: Different crops are sensitive to different herbicides. Some herbicides have a long residual effect, which will cause seedlings of sensitive crops to not grow, have rotten roots or die in the next crop (season). . Therefore, when choosing herbicides, you must consider what crops will be planted next (season).
For example, if you are planting sugar beets, potatoes, melons, sorghum, rice, cotton, vegetables, etc. in the next season, you cannot use atrazine, chlorsulfuron-methyl, chlorsulfuron-methyl, etc. as weed control for the previous season's crops. agent. When soybeans and wheat are planted in the next crop, the amount of atrazine used in the previous crop should be reduced by half.
For other issues related to phytotoxicity, I recommend reading an article from Fengshoubang. "The cause of herbicide phytotoxicity is self-inflicted!"