Wheat can not spray herbicide after jointing

Wheat and weeds have different levels of sensitivity to herbicides at different times. They also have different safety performances for wheat. Different herbicides have different properties. Therefore, it is very important to correctly grasp the application period, especially after the jointing of wheat to young ears. During the application of differentiation, more attention should be paid to the safety of herbicides to wheat.

There is a wide variety of wheat herbicides in the current pesticide market, and most wheat field herbicides are used before the jointing of wheat. Why is this? Because wheat should not be used after jointing, it is very easy to cause varying degrees of injury. Why can't we spray herbicide after jointing wheat?

From the jointing stage to the booting stage of wheat, it is the period between vegetative growth and reproductive growth of wheat. It is sensitive to herbicides, easily produces phytotoxicity, inhibits the growth of wheat, causes childbirth to die, ear deformity, and growth is slow, so it should be in jointing Before the application of drugs. For example, when wheat is used in the jointing and booting stage of wheat, various herbicides such as oxazolyoxime, dimethyl tetrachlorine and dicamba can easily cause curling of wheat leaves, yellowing of wheat seedlings, suppression of growth, and disruption of ear differentiation. Spike malformation.

The use of herbicides containing tribenuron-methyl in spring wheat fields will cause phytotoxicity to soybeans and other crops in later crops. When used, they should be spaced no less than 60 days from the sowing date of the next crop to ensure the safety of the crops. . In addition, the weeds are older after the jointing stage of wheat, and the weeding effect is also poor.

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