Metriphar 48SC 5L Herbicide

Metriphar 48SC is a Selective Herbicide for Pre- and Post-Emergence Weed Control in Asparagus, Carrots, Lentils, Lucerne, Maize, Peas, Potatoes and Tomatoes.
Active ingredient:
480g/litre Metribuzin in a Suspension Concentrate.
Key Strength gives both Knockdown AND Residual Control.
USED IN:
- Potatoes.
- Maize.
- Peas.
- Carrots.
- Tomatoes.
- Lucerne.
Mixing Rates Per Tank: (Real NZ Field Examples).
Rates vary by Crop, but typical label ranges:
~0.7 – 1.2 L/ha (common range depending on Crop & Timing).
- Example: 200L tank.
SCENARIO A: 200 L/ha (1 tank = 1 ha).
Rate: 1.0 L/ha.
- Add 1.0 L per 200L tank.
SCENARIO B: 100 L/ha (tank covers 2 ha).
- Add 2.0 L per 200L tank.
SCENARIO C: Higher rate (Heavy Weeds / Maize Pre-emerge).
Rate: 1.2 L/ha.
- Add 1.2 L per 200L tank (200 L/ha).
- Example (from label – Maize Mix) 870 mL – 1.2 L/ha + Alachlor.
- Shows:
Often used in tank mixes, not solo.
Mixing Tips: (IMPORTANT).
- Suspension Concentrate Formulation → keep agitation on.
- Add early in Tank Mix.
NEEDS:
- Moisture for Activation.
- Good Soil coverage.
Best Alternatives / Rotation Partners:
- Metriphar = Group C1 (PSII) → same resistance group as Linuron.
- So don’t stack: Linuron + Metribuzin repeatedly.
- Best Rotation Options.
- Group 15 (Residual backbone)S-metolachlor Alachlor.
- Strong partner (especially Maize).
- Group 27 (Broadleaf powerhouse) Mesotrione.
Excellent On:
- Fathen.
- Nightshade.
Group 3 (Pre-emerge grass).
- Pendimethalin.
- Trifluralin.
Group 9 (Burn-down).
- Glyphosate.
- Before planting.
- Simple Program Example (Maize).
Pre-plant: Glyphosate.
Pre-emerge: Metribuzin + S-metolachlor.
Post: Mesotrione.
- Covers Grass + Broadleaf + Resistance.
Suitability By Crop. (Very Practical)
POTATOES:
- Excellent fit (one of the main uses).
Controls:
- Fathen.
- Nightshade.
- Works Pre + early post.
- One of the core herbicides in Potatoes.
MAIZE / SWEETCORN:
- Very useful.
Controls:
- Broadleaf Weeds.
- Some Grasses.
- BUT Best in mixes (not strong enough alone).
CARROTS:
- Good but slightly harsher than Linuron.
- Effective on Small Weeds.
- Risk of Crop Damage if:
- Applied too early.
- Light soils.
LUCERNE:
- Specialist use.
- Good on:
POA:
- Only on established stands (>9 months).
PEAS / LENTILS / TOMATOES:
- Good selective option.
Works best:
- Pre-emerge.
- Early post on Small Weeds.
Weed Spectrum (Where It Shines)
STRONG ON:
- Fathen.
- Chickweed.
- Amaranthus.
- Shepherd’s Purse.
- Wireweed.
WEAKER ON:
- Large Weeds (>4 leaf).
- Deep-rooted Perennials.
- Some Grasses.
Safety & Use Risks.
- Harmful if Swallowed.
- Skin/Eye Irritant.
- Very toxic to Aquatic life.
Practical Risks.
- Spray drift can damage Crops.
- Soil residual can affect following Crops.
- Max 2 applications per year.
Key Practical Takeaways.
STRENGTHS:
- Strong residual + knockdown combo.
Excellent in:
- Potatoes.
- Maize Programs.
- Cost-effective.
WEAKNESSES:
- Same resistance Group as Linuron:
- Crop sensitivity (especially Carrots).
- Needs moisture to activate.
Metribuzin vs Linuron: (Quick Insight).
Metribuzin:
- Stronger Residual.
- Broader Weed Control.
- Slightly harsher on Crops.
Linuron:
- Safer on Crops.
- Slightly weaker spectrum.
Many Growers use both in rotation or combination.
- When to Use Metriphar.
- Pre-emerge with moisture forecast.
In Potatoes or Maize.
- When you want longer residual than Linuron.
When To Be Careful.
- Light soils.
- Sensitive Crops (Carrots).
- Dry conditions.
Caution:
Must be used strictly according to label directions.

Available in 5L

Metriphar Technical Guide 

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