Dicamba 480g/L SL: Selective Broadleaf Herbicide for Crop Systems

Dicamba 480g/L SL (Soluble Liquid) is a systemic selective herbicide formulated with 480 grams of active ingredient per liter, designed for post-emergent control of broadleaf weeds in cereal crops, pastures, and non-crop areas. Belonging to the benzoic acid herbicide family, it acts as a synthetic auxin, disrupting plant growth regulation and causing irreversible damage to target weeds. The SL formulation offers high water solubility and uniform foliar absorption, making it a staple in integrated weed management programs.

Active Ingredient & Chemical Properties

Chemical Name: Dicamba (3,6-Dichloro-2-methoxybenzoic acid)

CAS Number: 1918-00-9

Molecular Formula: C₈H₆Cl₂O₃

Formulation Type: Soluble Liquid (SL)

Physical Properties: Clear to light brown liquid, soluble in water (2.4 g/L at 25°C), pH 5.5–7.0, density 1.05–1.10 g/cm³.

Mode of Action

Foliar & Root Uptake:

- Absorbed by leaves via stomata and by roots, translocated through xylem and phloem to meristematic tissues.

Auxin-Mimicking Activity:

- Disrupts cell division and elongation, causing abnormal growth (twisted stems, cupped leaves, stunted roots).

Symptom Progression:

- 2–3 days: Leaf curling and chlorosis

- 5–7 days: Stem brittleness and vascular collapse

- 7–14 days: Complete weed necrosis

Target Crops & Weeds

Crop	Controlled Weeds
Wheat/Barley	Lamb’s-quarters, pigweed, wild mustard
Pastures	Dandelion, dock, buttercup
Non-Crop Areas	Thistle, poison ivy, kudzu
Transgenic Crops	Dicamba-tolerant soybeans, cotton (e.g., Xtend® systems)

Dosage & Application Guide

Crop-Specific Recommendations

Crop	Dosage (g ai/ha)	Application Timing	Method & Tips
Winter Wheat	120–180 (250–375 mL 480g/L SL)	2–4 leaf stage of weeds (post-emergent)	Spray with 200–300 L water/ha; add 0.25% v/v non-ionic surfactant for dry conditions.
Pastures	150–240 (312–500 mL 480g/L SL)	Early bloom stage of weeds (spring/summer)	Spot-treatment or broadcast; avoid spraying on legume-dominant pastures.
Dicamba-Tolerant Soybeans	90–150 (187–312 mL 480g/L SL)	Weeds at 2–4 leaf stage (post-emergent)	Use with drift-reducing nozzles; apply when wind speed < 16 km/h.
Non-Crop Areas	240–360 (500–750 mL 480g/L SL)	Active weed growth (spring–autumn)	Mix with glyphosate for perennial weed control; wear PPE during application.

Key Application Practices

Drift Management:

Use low-pressure nozzles (20–40 PSI) and avoid application in wind speeds > 10 km/h to prevent off-target damage to sensitive crops (e.g., vegetables, grapes).

Tank Mixes:

- With glyphosate for non-selective control in fallow fields

- With 2,4-D for enhanced broadleaf suppression in cereals

pH Adjustment:

Maintain spray solution pH 5.5–7.0 to prevent herbicide degradation; add buffering agents if necessary.

SEO-Optimized Key Features

Broad-Spectrum Efficacy:

Controls 100+ broadleaf species, including resistant biotypes (e.g., Palmer amaranth).

Systemic & Rapid Action:

Visible symptoms within 48 hours; translocates to roots for perennial weed kill.

Transgenic Crop Compatibility:

Safe for use in dicamba-tolerant (Xtend®) soybeans and cotton, expanding application flexibility.

Low Residue Profile:

Soil half-life 1–7 days (aerobic conditions), allowing early rotation to sensitive crops.

Cost-Effective:

Low application rates (90–360 g ai/ha) reduce input costs while maintaining high weed control efficiency.

Safety & Environmental Notes

Toxicity:

- Low mammalian toxicity (LD₅₀ > 2000 mg/kg rat); moderate risk to fish (LC₅₀ 1–10 mg/L).

Environmental Precautions:

- Maintain 100 m buffer from water bodies; avoid spraying over wetlands.

- Drift can damage non-target broadleaf plants (e.g., trees, gardens).

Crop Rotation:

- Wait 30 days before planting sensitive crops (e.g., beets, spinach); safe for cereals after 14 days.

Storage:

Store at 5–30°C, away from food/feed; keep containers sealed to prevent evaporation.

Packaging & Compliance

Standard Packs: 1L, 5L, 20L HDPE containers with UV-protective labels.

Regulatory Status:

- Registered in USA (EPA), Canada, EU, and major cropping regions.

Shelf Life: 3 years under recommended storage conditions.

SEO-Focused FAQ

What weeds does Dicamba 480g/L SL control?

Effective against broadleaf weeds like lamb’s-quarters, dandelion, thistle, and amaranth.

Can it be used in soybeans?

Yes, in dicamba-tolerant (Xtend®) varieties; avoid in conventional soybeans due to phytotoxicity risk.

What is the pre-harvest interval (PHI)?

- Wheat/Barley: 45 days

- Pastures: No PHI (non-food use)

- Soybeans: 60 days

How to manage drift during application?

Use drift-reducing nozzles, apply at low wind speeds, and maintain buffer zones from sensitive areas.

Is Dicamba 480g/L SL compatible with other herbicides?

Yes, but jar-test first; common mixes include glyphosate, 2,4-D, and metribuzin.

Field Performance Data

Soybean Trials in the US Midwest:

120 g ai/ha + drift agent controlled 95% of Palmer amaranth, increasing yield by 1.5 t/ha.

Wheat Trials in Australia:

180 g ai/ha suppressed lamb’s-quarters by 92%, improving grain quality and protein content.

Residue Limits

Crop	MRL (mg/kg)	Regulatory Region
Wheat/Barley	0.05	EU, Codex Alimentarius
Soybeans	0.1	EPA, Canada
Pastures	N/A	Non-food use

For detailed application guides or regional regulatory support, contact our agricultural specialists for tailored recommendations.

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