Active ingredient

Cycloxydim

Description

Cycloxydim is a highly effective active ingredient belonging to the cyclohexanedione chemical class. It functions as a selective, systemic herbicide widely used in modern agriculture to manage both annual and perennial grass weeds in various broad-leaved crops.

The mechanism of action involves the inhibition of the acetyl-CoA carboxylase (ACCase) enzyme, which is fundamental for fatty acid synthesis within plant cells. By blocking this pathway, cycloxydim halts weed growth, leading to the necrosis of meristematic tissues and the eventual death of the target plants.

This herbicide is commonly applied to crops such as soybeans, sugar beets, sunflowers, potatoes, and oilseed rape. It is exceptionally effective against troublesome grass species, including couch grass (Agropyron repens), barnyard grass, foxtail, and wild oats, providing significant relief to crops by reducing weed competition.

For optimal performance, applications should be timed during the active growth phase of the weeds, typically at the 2 to 4-leaf stage for annuals, or when perennial grasses are 15–20 cm tall. Application efficacy can be affected by extreme environmental factors like severe drought or freezing temperatures, which may inhibit the plant's metabolic activity.

When using cycloxydim, operators must adhere to strict safety protocols, including the use of personal protective equipment (PPE) to prevent skin and eye contact. It is essential to avoid drift towards adjacent monocotyledonous crops, as the substance is highly phytotoxic to grass species. Always follow local environmental regulations regarding chemical disposal and buffer zones.

  • Excellent systemic control of grasses
  • High selectivity for dicotyledonous crops
  • Fast absorption through foliage
  • Consistent efficacy across various soil types
Regulatory

Status in the European Union

Approved in the EU

CAS number
101 205-02-1
Approved from
01.06.2011
Approval until
31.08.2026
ADI
0.07 mg/kg bw/day
ARfD
2.0 mg/kg bw
AOEL
0.1 mg/kg bw/day
Hazard classification (CLP)
Repr. 2 - H361d

Regulatory status data: EU Pesticides Database © European Union, CC BY 4.0. EU status is for reference only and does not replace national registration in your country.

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