Exadia® is a selective herbicide for weed control in certain Fruit Crops and Onions.
Active Ingredient:
380g/litre Oxadiazon SC.
How It Works:
– Soil-active (residual) herbicide.
– Forms a barrier in the soil → controls weeds as they germinate.
– Has very little knockdown activity.
Key Implication:
– You must start with a clean, weed-free surface before applying.
What It Controls:
Controls a wide range of:
– Annual Grasses.
– Broadleaf Weeds.
Examples:
– Ryegrass.
– Poa.
– Barnyard Grass.
– Fathen.
– Nightshade.
– Fumitory.
– Oxalis.
– Docks.
– Willow weed.
– Wireweed.
Weak / not controlled:
– Chickweed.
– Pearlwort.
– Rhizomatous Perennials (e.g. couch).
Use Situations:
– Onions.
Fruit Crops:
– Pipfruit.
– Stonefruit.
– Berries / Brambles.
– Typically applied as a directed spray to soil under trees or crops.
Application & Timing:(Key rule)
– Apply before weed emergence (pre-emergence).
Works best:
– On moist soil.
– With rain/irrigation after application.
Residual activity:
– Up to ~6 weeks control.
Crop timing examples:
– Onions ~2 L/ha at 4-leaf stage.
– Fruit Crops ~4 L/ha as directed spray to soil.
Critical Use Rules:
– Do NOT apply onto weeds expecting knockdown.
– Do NOT cultivate soil after spraying (breaks barrier).
– Do NOT incorporate into soil.
– Avoid contact with Crop Foliage/Buds.
Requires:
– Moisture to activate.
– Good soil coverage.
Plant-Back & Restrictions:
Plant-back interval:
– 90 days before sensitive crops.
Not for:
– Covered Crops.
– Situations where soil will be disturbed soon.
Hazards & Safety:
– Suspected Carcinogen.
– Eye & skin irritant.
– Very toxic to aquatic life and soil organisms.
Practical Precautions:
– Strict drift control near waterways.
– PPE required (Gloves, Eye Protection, etc.).
– Avoid contamination of soil/water.
Practical Takeaways:
– Think of Exadia as,“A strong pre-emergence residual for horticulture”.
– Excellent on Oxalis + hard-to-kill Broadleaf Weeds.
– Works best in clean, well-prepared soil.
– Gives medium-term residual (~6 weeks).
Caution:
Must be used strictly according to label directions.
Available in 5L.
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