Amaranth is more sensitive to acetochlor and acetochlor is not suitable for soil closure. Before the seedlings are sown after planting, they can be treated with aconitine, pendimethalin, and sedation. Among them, prometryn is mainly used for the control of broad-leaved weeds. Penicillin and secudine can be used to control grassy weeds and some broadleaf weeds. It can be selected according to the field grasses.
During the growth of leeks, quercetin can be used to control grassy weeds, such as quizalofop, flupirazione, and the safety of leeks. According to information, octanoic bromoxynil can control broad-leaved weeds in leeks field, but improper use may cause contact-type drug spots, and a small area test should be conducted before large-area administration to ensure safety.

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