Strada 400SC 10L (Herbicide)

Strada® 400SC is a selective broad-spectrum Herbicide recommended for use in certain Fruit Crops and Onions for the control of Annual Grasses and Broadleaf Weeds. Following the application of Strada® 400SC to the soil and its absorption by the plant, both root and shoot growth is inhibited in susceptible plants. Affected plants die shortly after germination or following emergence from the soil. Strada® 400SC will not control Perennial or Established Weeds. Weed control with Strada® 400SC may be reduced where soil organic matter exceeds 6%. Approximately 12 mm of rainfall or irrigation within ten days of application is required for optimum performance. Reduced Weed Control can be expected when used under dry soil conditions.
Active Ingredient:
400g/litre Pendimethalin in the form of a Suspension Concentrate.
Where It’s Used:
Fruit Crops:
- Grapes (Dormant).
- Apples.
- Citrus.
- Kiwifruit.
- Stonefruit.
- Tamarillos, etc.
- Onions: pre- and early post-emergence.
- Typically used as a bare-ground or early crop Herbicide.
What it Controls:
Controls Annual Grasses + Broadleaf Weeds, Including:
- Chickweed.
- Fathen.
- Black Nightshade.
- Spurrey.
- Speedwell.
- Wireweed.
- Wild Oats (Partial).
Important limitation:
- Does NOT control Perennial Weeds or Established Weeds.
How It Works: (Key Point).
- Soil-applied residual Herbicide.
Taken up by:
- Emerging Shoots and Roots.
Mode:
- Inhibits cell division (microtubule formation).
Result:
- Weeds die just after germination or early emergence.
Key Idea:
- Prevents Weeds establishing rather than killing big Weeds.
Activation: (Critical For Performance).
- Needs ~10–12 mm rainfall or irrigation within ~10 days.
Without Moisture:
- Poor control.
- Patchy results.
Application Guidance:
Fruit Crops:
- Rate ~4.1–5.0 L/ha.
- Apply To bare soil under Trees/Vines.
- Avoid Contact with Green Bark, Buds, Foliage.
Onions:
- Pre-emergence apply within 4 days of sowing.
- Do NOT apply close to emergence (Crop damage risk).
- Post-emergence from 2 true leaf stage → up to 4 leaf stage.
- Mainly extends residual control (not knockdown).
Critical Limitations:
No Control Of:
- Established Weeds.
- Perennials.
Performance Reduced:
- In dry soil.
- High organic matter soils (>6%).
Often:
- Mixed with knockdown Herbicide if Weeds already present.
Crop Safety & Rotation:
- Do NOT plant sensitive Crops (eg. Ryegrass, Cucurbits, Beet Crops) for ~6 months after use.
- Residual carryover is important.
Resistance Management:
- Group K1 herbicide.
- Risk of resistance over time.
Best Practice:
- Rotate with other Herbicide Groups.
- Use in programmes, not repeated alone.
Safety & Environmental Hazards:
- May Cause:
- Skin sensitisation.
- Organ effects (long-term exposure).
- Very toxic to aquatic life & soil organisms.
Precautions:
- Avoid drift/runoff.
- Do not apply into water.
- Use PPE.
Bottom Line:
- Strada® 400SC = strong pre-emergence residual Herbicide.
Best Used:
- On clean, weed-free soil.
- With rainfall/irrigation soon after.
Key Strengths:
- Broad spectrum (grass + BLW).
- Long residual control.
Key Weakness:
- No control of established Weeds.
Caution:
Must be used strictly according to label directions.

Available in 10L.

Strada Technical Guide 
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