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Quizalofop-P-Ethyl

Type: Herbicide

Mode of Action: Inhibiting the enzyme acetyl-CoA carboxylase (ACCase)

Common Product Names: Assure & Quiz

What is it?

Quizalofop-P-Ethyl belongs to the chemical class of aryloxyphenoxypropionates, commonly known as "fop" herbicides. It is a highly effective herbicide used primarily in broadleaf crops such as soybeans, sugar beets, cotton, and peanuts. Its selectivity allows it to target and eliminate grass weeds without harming the broadleaf crops. Quizalofop-P-Ethyl is absorbed by the foliage and translocated throughout the plant, concentrating in the growing points of shoots and roots.

How does it work?

Quizalofop-P-Ethyl is absorbed by the leaves of grass weeds and then translocated to the growing points. By inhibiting the ACCase enzyme, it disrupts fatty acid synthesis, leading to the cessation of cell membrane production and energy storage. This disruption causes the weed to stop growing, and within a few days, the grass weeds show visible symptoms such as chlorosis (yellowing) and necrosis (tissue death). Full weed control is typically observed within 1-3 weeks, depending on environmental conditions and the weed species targeted.

Benefits

  • Selective Weed Control: Quizalofop-P-Ethyl specifically targets grass weeds, making it safe for use in broadleaf crops.
  • Post-Emergence Application: This herbicide is effective on weeds that have already emerged, providing flexibility in weed management strategies.
  • Rapid Absorption and Translocation: Quick absorption and movement within the plant ensure that the herbicide reaches the growing points, leading to effective control.
  • Visible Results: Symptoms of weed control can be seen within a few days, providing reassurance to farmers about its efficacy.
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