ACCase inhibition mode of action and crop selectivity
Fenoxaprop-p-ethyl selectively controls annual and perennial grassy weeds within broadleaf agricultural and horticultural crops.
- Inhibits acetyl-CoA carboxylase (ACCase, HRAC Group 1), preventing fatty acid synthesis in grass cell membranes.
- High physiological selectivity: Broadleaf dicotyledonous crops rapidly metabolize and detoxify the active ingredient.
- Systemic translocation: Rapidly absorbed through weed foliage and translocated to active growing meristems.
- Visible symptom development: Growing tips turn chlorotic within 4 to 7 days, followed by necrosis and complete plant collapse.
Target weed species and approved broadleaf crops
Fenoxaprop-p-ethyl 9.3% EC is registered under CIBRC regulations across key pulse, oilseed, and commercial cash crops.
- Soybean and Groundnut: Eradication of barnyard grass (Echinochloa colona), crabgrass (Digitaria sanguinalis), and goosegrass.
- Cotton: Post-emergence suppression of annual narrow-leaf grassy weeds without stunting cotton vegetative growth.
- Black gram (Urad) and Green gram (Moong): Clean inter-row weed management during early vegetative flushes.
- Onion and Garlic: Selective grass management in closely spaced bulb vegetable beds.
Application timing and spraying precautions
Apply when target grassy weeds are in the 2 to 4 leaf stage and actively growing in moist soil conditions. Drought-stressed weeds with hardened leaf cuticles absorb less herbicide, reducing control efficacy. Use flat fan nozzles with recommended water volume for uniform coverage. Avoid tank mixing with phenoxy broadleaf herbicides (like 2,4-D) as severe antagonism can occur.
Official source
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Central Insecticides Board and Registration Committee ↗Related on KisanPe
Common questions
Which types of weeds are controlled by Fenoxaprop-p-ethyl 9.3% EC?
It specifically controls annual and perennial narrow-leaf grassy weeds such as Echinochloa, Digitaria, and Eleusine species.
Can Fenoxaprop-p-ethyl be applied to broadleaf crops like soybean and cotton?
Yes, broadleaf crops tolerate the chemical safely because their internal metabolism breaks down the active herbicide molecule.
What is the ideal weed growth stage for applying Fenoxaprop-p-ethyl?
Apply when grass weeds are young, actively growing, and have between 2 and 4 leaves for optimal herbicide uptake.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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