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
Customer also search for the best price for Sencor.
Registered under the ACVM Act: P005582
