Description
Conquest Depic 75-D Broadleaf Herbicide
Conquest Depic 75-D Herbicide controls annual and perennial broadleaf weeds across pastures, winter and summer cereals, sugarcane, fallow, and non-crop areas throughout Australia. It contains 300 g/L 2,4-D (as the triisopropanolamine salt) and 75 g/L Picloram (as the triisopropanolamine salt) in a liquid formulation. Together, these two Group I actives combine phenoxy and pyridine modes of action to deliver both contact and residual broadleaf weed control in a single product.
Conquest Crop Protection Pty Ltd formulated Depic 75-D for broadacre, pastoral, and non-crop weed management. The label covers over 60 weed species across multiple situations, with application methods including ground boom, aircraft, high volume handgun, stem injection, cut stump, and frilling. This range of methods makes it suitable for both paddock-scale broadleaf weed knockdown and targeted woody weed control on non-crop land.
Weeds Controlled by Conquest Depic 75-D Broadleaf Herbicide
The label covers weed control across the following cropping and land management situations:
| Situation | Key Weeds Controlled |
|---|---|
| Winter cereals | Climbing buckwheat, Saffron thistle, Sowthistle, Docks |
| Summer cereals (NSW and Qld) | Thornapple, Amaranthus spp., Noogoora burr, Bladder ketmia |
| Sugar cane (Qld) | Sicklepod (at labelled rates with 2,4-D amine) |
| Fallow (pre-sowing winter cereals) | Bathurst burr, Morning glory, Parthenium weed, Sesbania pea |
| Pastures and non-crop areas | Lantana, Paterson’s curse, Skeleton weed, Star thistle, Ragwort, Bindweed |
| Woody weed control | Eucalyptus spp. regrowth, Hawthorn, Rubber vine, Tree-of-Heaven |
Frequently Asked Questions
Q.Can Conquest Depic 75-D cause damage from spray drift?
A.Yes. This is a phenoxy herbicide, and it causes severe damage to susceptible crops, including cotton, tomatoes, vines, fruit trees, and ornamentals. Apply only when wind speed is between 3 and 15 km/h, and use Very Coarse droplets or larger as required by the label.
Q.What is the withholding period for livestock grazing?
A.Do not graze or cut treated crops or pastures for stock food for 7 days after application. For treated sugarcane, the withholding period extends to 8 weeks before harvest and before cutting for stock food.
Q.Which products is Conquest Depic 75-D compatible with?
A.The label approves mixing with atrazine (600 g/L flowable or equivalent granular), 2,4-D amine (625 g/L), diquat, metsulfuron-methyl, Topik, and glyphosate (450 g/L and 480 g/L). Mix only with water, not with oil or diesel fuel.
Q.What application methods does the label permit?
A.Approved methods include ground boom (50–100 L/ha), aircraft, high volume handgun, stem injection, cut stump, and frilling. Boom sprayers must deliver Very Coarse droplets at a boom height of 0.5 metres or lower above the target canopy.
Q.Does Picloram leave residues in the soil?
A.Yes. Picloram persists in the soil for extended periods, with duration influenced by application rate, soil type, rainfall, and temperature. Do not plant susceptible crops within 12 months of applying cereal use rates of this product.



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