Why Haloxyfop-P-methyl (D) is a Go-To Herbicide for Grass Weed Control in Broadleaf Crops

Introduction

Haloxyfop-P-methyl (D) is a highly effective selective post-emergence herbicide used to control annual and perennial grass weeds in broadleaf crops. Known for its rapid absorption and systemic action, it is widely applied in soybean, cotton, peanut, and various horticultural crops where grasses pose a significant threat to yield.

Product Information

• Name: Haloxyfop-P-methyl (D)

• Chemical Name: (R)-2-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]propionic acid methyl ester

• CAS Number: 69806-40-2

• Appearance: Pale yellow liquid

• Formulations: EC (Emulsifiable Concentrate)

• Application Method: Post-emergence foliar spray

Key Features

• Selective herbicide: Targets grass weeds in broadleaf crops

• Controls annual and perennial grasses like foxtail and Johnson grass

• Systemic action: Moves to roots and rhizomes for complete kill

• Compatible with legume and horticultural crops

• Fast absorption through foliage with visible effects in 7–14 days

Applications

Haloxyfop-P-methyl inhibits acetyl-CoA carboxylase (ACCase), an enzyme critical for fatty acid synthesis in grass weeds. This disrupts cell membrane formation, leading to weed death while sparing broadleaf crops.

Advantages

• High selectivity for broadleaf crops

• Effective against both annual and perennial grasses

• Low application rates with strong systemic movement

• Compatible with tank mixes for broader weed control

Limitations

• No effect on broadleaf weeds

• Must be applied when weeds are actively growing

• Risk of resistance development with repeated overuse

• Rain within 1 hour of spraying may reduce efficacy

FAQs

Q: Can Haloxyfop-P-methyl be mixed with broadleaf herbicides?
A: Yes, it is often tank-mixed with herbicides like bentazon or fomesafen for comprehensive weed control.

Q: How soon after spraying are symptoms visible?
A: Chlorosis begins within 5–7 days, followed by weed death in 10–14 days.

Q: Is it safe for rotational crops?
A: Yes, due to rapid degradation in soil, it poses minimal risk to subsequent crops.

Conclusion

Haloxyfop-P-methyl (D) is a selective grass weed herbicide ideal for broadleaf crops, offering systemic action, reliable control of annual and perennial grasses, and excellent crop safety. Its targeted efficacy makes it a vital tool in integrated weed management programs for legumes, cotton, and horticulture.