Why can't spray herbicide after wheat jointing?

Wheat and weeds are sensitive to herbicides at different times, and their safety performance is different. The performance of various herbicides is different, so it is important to master the application period correctly, especially after wheat jointing to young ears. When applying in the differentiation stage, attention should be paid to the safety of the herbicide to wheat.
There are many varieties of wheat herbicides in the current pesticide market, and most of the wheat field herbicides are used before wheat jointing. Why is this? Because wheat should not be used after jointing, it will easily cause different degrees of phytotoxicity. Why can't spray herbicides after wheat jointing?

Wheat is in the jointing stage to the booting stage, which is the gradual growth period of wheat vegetative growth and reproductive growth. It is sensitive to herbicides, it is easy to produce phytotoxicity, inhibit wheat growth, cause tillering death, malformation of wheat ears, slow growth, so it should be at jointing Pre-application. For example, when wheat is used at the booting stage, it can easily cause the wheat leaves to curl, the wheat seedlings to yellow, the growth to be inhibited, and the panicle differentiation to be destroyed. Ear deformity.

Application of herbicides containing bensulfuron-methyl in spring wheat fields will cause phytotoxicity to crops such as soybeans in the later stage. When used, it should be separated from the sowing time of the lower crops by not less than 60 days to ensure the safety of the crops. . In addition, weeds are older and have better weed control effects after wheat jointing.

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