Hexazinone 250

Manufacturer
Novaguard
Category
Herbicides
Registered until
2024-06-30
Registration number
80905
Active materials
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GENERAL INSTRUCTIONS: FOR PINUS RADIATA FORESTRY SITUATIONS ONLY

USE OF SURFACTANT/WETTING AGENTS:

  • DO NOT add a surfactant/wetting agent when applying by ground or air over Pinus radiata trees. Use a surfactant/wetting agent for directed foliar applications to unwanted species. Add surfactant/wetting agent where appropriate at the rate of 250 - 500 mL/100 L of non-ionic surfactant containing 100% active constituent. Adjust rates according to the active constituent level in the product.

SAFETY TO PINUS RADIATA PLANTATIONS:

  • Young pines may be killed or injured if post-planting sprays are carried out in specific situations:
    1. Soil is gravel/rocky with exposed subsoils.
    2. Young pines are under stress (e.g., drought, moisture stress, waterlogging).
    3. Soils that are poorly drained.

SPRAY TANK PREPARATION:

  • With the agitator engaged:
    1. Partially fill the tank with water.
    2. Add the correct amount of product.
    3. Top up the tank with water.
  • Use strainer and nozzle screens of 50 mesh or coarser; keep the agitator running while spraying.

APPLICATION EQUIPMENT:

1. Ground Application:

  • Use 100 - 400 L per sprayed hectare. Higher water volume for denser target species.
  • Ensure spray overlap occurs above target weeds to prevent uncontrolled weed strips.

2. Hand Held Equipment Application:

  • Use 2000 – 4000 L per sprayed hectare.

3. Aerial Application:

  • Use a minimum of 5 L water for each liter of product recommended in the Directions for Use Table.

SPRAYER CLEANUP:

  • Clean all spray equipment thoroughly after use to avoid corrosion.
  • Aircraft used should be thoroughly washed, paying attention to wheels and landing gear.
  • Drain water used in cleanup to areas that won't damage desirable species either by direct contact or root uptake via seepage into soil.

GENERAL INSTRUCTIONS:

  • This product is both foliar and root absorbed and provides residual soil activity.
  • Apply during periods of active plant growth for best foliar and residual control.
  • Application during dormant, semi-dormant, or winter months may be less effective.
  • In temperate winter rainfall areas, where temperatures are generally below 25°C during active growth, the overall effect may be slower.
  • For best control of perennials, apply during spring in these areas. In WA and SA, apply only during April-August when adequate rainfall is expected.
  • DO NOT apply during periods of intense rainfall or conditions causing drift to non-target areas.
  • On slopes of 20% to 30%, apply by strip, spot, or stem injection. On slopes greater than 30%, apply by spot or stem injection.

SPOTGUN APPLICATIONS:

  • a) To the Soil:
    • Apply on bare soil or use spear attachment when pasture or leaf litter covers the soil.
    • Apply on the uphill side of slopes.
  • b) Stem Injection Application:
    • For multi-stemmed trees: treat each stem as an individual tree.
    • Bushes (trees) up to 5 m tall: 1 cut/bush at waist height. Trees 5 to 18 m tall: 30 cm center to center cut spacing at waist height.

FOLIAR SPRAY APPLICATIONS:

  • Use sufficient water for thorough, uniform coverage.
  • Apply as a post-emergent spray during the period of active plant growth and when the air temperature is 25°C and above.
  • Applications when vegetation is dormant, semi-dormant, under moisture stress, or during the winter months may not be as effective.
  • In temperate winter rainfall areas where temperatures are generally below 25°C during the period of active plant growth, the foliar effect may be slow to appear.
  • In these areas, herbicide activity is more dependent on root absorption.
  • For residual control, sufficient rainfall is required after treatment to promote root absorption by the weeds. Results obtained may vary with the amount of chemical applied, rainfall, air temperature, soil type, and other conditions. All use rates of the product are expressed as overall rates. For band treatment use proportionately less, i.e. use one-third the overall rate when treating one-third of the area.

EQUIPMENT AND APPLICATION:

  • a) SPOTGUN and Stem Injection:
    • Applications to the soil use a SPOTGUN; Stem Injection uses a suitable tree injector.
  • b) Foliar Spray Applications:
    • Use Wynca Hexazinone 250 Herbicide with water in ground equipment.
    • Strainer and nozzle screens should be 50 mesh or coarser.

USE OF SURFACTANTS/WETTING AGENTS:

  • Use a surfactant/wetting agent for foliar spray applications only, by ground equipment. Add non-ionic surfactant/wetting agent at the rate of 250 – 500 mL/100 L or spray (for a surfactant containing 100% active constituent) for improved wetting.