ACCase Enzyme Inhibition and Selective Grass Control
Haloxyfop-R-methyl selectively inhibits the acetyl-CoA carboxylase (ACCase) enzyme in monocotyledonous grasses, halting de novo fatty acid synthesis in growing meristems. Susceptible grass weeds stop growing within 48 hours, develop reddish-purple discoloration, and collapse within 1 to 2 weeks.
Broadleaf crops possess a structurally distinct, insensitive ACCase enzyme, making Gallant safe for selective over-the-top application.
- Target grassy weeds: Echinochloa colona, Digitaria sanguinalis, Dactyloctenium aegyptium, and Cynodon dactylon.
- Broadleaf safety: Highly selective to soybean, groundnut, cotton, pulses, and onion without causing crop stunting.
- Systemic translocation: Rapidly absorbed by leaves and translocated acropetally and basipetally to underground rhizomes and stolons.
- Rainfastness: Penetrates leaf cuticles rapidly, achieving rainfastness within 1 hour after application.
Application Timing and Spray Guidelines
Herbicide performance is highest when grassy weeds are actively growing with 2 to 4 leaves under adequate soil moisture conditions.
Using calibrated sprayers with flat fan nozzles ensures uniform droplet distribution across narrow grass leaves.
- Apply post-emergence 15 to 25 days after crop sowing when target grasses are young and actively growing.
- Avoid spraying during severe drought or moisture stress when weeds have thickened cuticles.
- Observe label pre-harvest intervals (PHI) and wear personal protective equipment during handling.
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Gallant herbicide?
Gallant contains Haloxyfop-R-methyl 10.5% EC, an ACCase-inhibiting selective post-emergence graminicide.
Does Gallant herbicide harm soybean or groundnut plants?
No, broadleaf dicot crops like soybean and groundnut have a different enzyme structure, making Gallant completely selective and safe.
Can Gallant control broadleaf weeds like bathua or parthenium?
No, Gallant targets only monocot grassy weeds; broadleaf weeds require separate broadleaf herbicides or manual weeding.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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