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Chlorimuron Ethyl

Type: Herbicide

Mode of Action: Inhibition of Acetolactate Synthase, Sulfonylureas (HRAC Group 2)

Common Product Names: Classic & Canopy

What is it?

Chlorimuron is a sulfonylurea herbicide developed by DuPont (now part of Corteva Agriscience). It belongs to Group 2 according to the Herbicide Resistance Action Committee (HRAC). Chlorimuron is a systemic herbicide, meaning it is absorbed by plants and transported throughout their tissues. It is selective, primarily targeting broadleaf weeds in soybean crops. Chlorimuron is used predominantly in agricultural settings and is typically applied at a low use rate.

How does it work?

Chlorimuron inhibits the enzyme acetolactate synthase (ALS), which is essential for the synthesis of certain amino acids in plants. This inhibition disrupts the growth of susceptible weeds, leading to their death. Due to its systemic nature, Chlorimuron is effective both on emerging weeds and those already established. The time it takes to see results can vary, but typically, effects on weeds are observed within weeks after application.

Benefits

Chlorimuron is highly effective against a variety of broadleaf weeds that commonly infest soybean fields. These include species such as velvetleaf, pigweed, and cocklebur. Its selectivity ensures that it targets these weeds without harming the soybean crops. This selectivity, combined with its systemic action, makes Chlorimuron a valuable tool in integrated weed management strategies for soybean farmers.

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