Active Ingredient Profile and Mode of Action
Haloxyfop-R-methyl belongs to the ACCase inhibitor chemical class (IRAC Group 1), formulated as an emulsifiable concentrate (10.5% EC).
The active R-enantiomer is rapidly absorbed by weed foliage and translocated through phloem vascular tissues to active growing meristems.
It inhibits acetyl-CoA carboxylase (ACCase), blocking fatty acid biosynthesis in grasses, stopping cell division, and causing necrotic tissue collapse within one to two weeks.
- Formulation: 10.5 percent Emulsifiable Concentrate (EC)
- High selectivity: Broadleaf crops rapidly metabolize and detoxify the molecule, ensuring absolute crop safety
- Systemic meristem action: Translocates downward into rhizomes and root crowns to prevent perennial grass regrowth
Target Grassy Weeds and Approved Crop Applications
Haloxyfop-R-methyl is registered for post-emergence weed control across soybean, groundnut, cotton, and pulses.
It effectively suppresses invasive annual and perennial grasses that compete with broadleaf crops for soil nutrients and moisture.
- Annual grasses: Controls barnyard grass (Echinochloa colona), crabgrass (Digitaria sanguinalis), and goosegrass
- Perennial grasses: Suppresses Bermuda grass (Cynodon dactylon) and Johnson grass (Sorghum halepense)
- Application timing: Best applied when target grasses are young and actively growing at the two to four leaf stage
Spraying Instructions, Moisture, and Operator Safety
Optimal herbicidal uptake requires adequate soil moisture at the time of application, as moisture-stressed weeds exhibit reduced chemical absorption.
Use flat fan nozzles at low operating pressure to maintain uniform droplet distribution and prevent drift onto neighboring cereal crops.
Wear standard personal protective equipment during chemical handling and spraying.
- Nozzle type: Flat fan nozzles deliver uniform coarse droplets that minimize drift onto neighboring cereal fields
- Soil moisture: Apply when fields have good moisture to maintain active weed metabolism and uptake
- Personal protection: Wear chemical-resistant gloves, protective clothing, and eye goggles during preparation
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What type of herbicide is Haloxyfop-R-methyl 10.5 EC?
It is a selective post-emergence graminicide that kills grassy weeds in broadleaf crops without harming the crop.
Can Haloxyfop-R-methyl be sprayed over standing soybean or cotton crops?
Yes, broadleaf crops like soybean, groundnut, and cotton safely metabolize the chemical, allowing over-the-top spraying.
Does Haloxyfop control broadleaf weeds or sedges?
No, it is strictly an ACCase graminicide and will only control grassy weeds; broadleaf weeds and sedges are not controlled.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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