FMC Hammer 400 EC 1L Herbicide
- Active ingredient
- Carfentrazone-ethyl 400 g/L
- Controls
- Prior to sowing broadacre crops, starting a fallow or establishing forestry plantations, and other label situations (tank mix with knockdown herbicide): marshmallow an...
- Withholding period
- Harvest – cotton processing: DO NOT HARVEST FOR 1 DAY AFTER APPLICATION. All other situations: not required for Hammer 400EC when used as directed; however, refer also to the withholding period of product/s mixed with Hammer 400EC. Grazing – cotton/cotton trash: DO NOT GRAZE TREATED AREAS OR FEED COTTON TRASH TO LIVESTOCK. Grass pasture and all other situations: not required when used as directed. ESI: not required when used as directed. (APVMA 63228) — always confirm on the registered label
For improvement in the control of marshmallow and certain other broadleaf weeds prior to establishment of broadacre crops, fallows or forest plantations, in commercial, industrial and public service areas, and around agricultural buildings and yards, in treefruits, nuts, grapevines in tank mixture with knockdown herbicides; for the control of marshmallow and annual nettles in grass pastures and rough grass/turf areas; and control of volunteer cotton seedlings including Roundup Ready cotton and desiccation of cotton re-growth.
Hammer 400EC Herbicide does not provide residual activity, therefore no crop plant back or rotational restrictions apply.
Active constituent: 400 g/L carfentrazone-ethyl
Solvent: 466 g/L liquid hydrocarbon
Always read the registered label before use (APVMA 63228).
Active Ingredient: Carfentrazone-ethyl 400 g/L
Chemical Schedule: S5
APVMA Reg. No: 63228
Harvest – cotton processing: DO NOT HARVEST FOR 1 DAY AFTER APPLICATION. All other situations: not required for Hammer 400EC when used as directed; however, refer also to the withholding period of product/s mixed with Hammer 400EC. Grazing – cotton/cotton trash: DO NOT GRAZE TREATED AREAS OR FEED COTTON TRASH TO LIVESTOCK. Grass pasture and all other situations: not required when used as directed. ESI: not required when used as directed. (APVMA 63228)
Always read the current registered product label before use. Withholding periods must be observed before slaughter, milking, or egg collection. The label supplied with the product is the legal document and takes precedence. If in doubt, contact TGRM on (07) 5482 1692 or the manufacturer directly.
Always read the current registered product label before use. Dose rates and withholding periods on this page are provided as a guide only. The registered label supplied with the product is the legal document and takes precedence. If in doubt, contact TGRM on (07) 5482 1692 or the manufacturer directly.
Always read the label and follow directions for use. The registered label is the legal document governing use of this product.
Download the Safety Data Sheet for this product:
Download SDS (PDF)Required for safe handling and storage. Keep on-site per WHS regulations.
Common Questions
What weeds does Hammer 400EC control?
The label lists marshmallow and certain other broadleaf weeds (including capeweed, chickweed, wild radish and Paterson's curse) in tank mixture with knockdown herbicides, marshmallow and annual nettles in grass pastures, and volunteer cotton seedlings.
Do I need to mix it with another herbicide?
For pre-sowing, fallow and similar situations the label directs use in tank mixture with knockdown herbicides, such as glyphosate or paraquat products listed on the label.
Are there plant-back restrictions?
The label states Hammer 400EC does not provide residual activity, therefore no crop plant back or rotational restrictions apply.
Is there a withholding period?
Cotton processing: do not harvest for 1 day after application. Do not graze treated cotton areas or feed cotton trash to livestock. All other situations: not required when used as directed; refer also to the withholding period of products mixed with Hammer 400EC.
Do you ship this product Australia-wide?
As a regulated chemical, this product can only be transported by road freight, it cannot be sent via Australia Post or air freight. Call us on (07) 5482 1692 before ordering to confirm delivery to your area.
Mainland Australia only — we’re unable to deliver this product to Tasmania. It is classified as environmentally hazardous (a marine pollutant), so it is regulated as a dangerous good for sea and air transport and our freight carriers will not accept it on those routes. Because every route to Tasmania and offshore destinations needs a sea or air leg, we can only deliver it to mainland addresses by road. Call us on (07) 5482 1692 if you are unsure about your address.
Can you deliver this to Tasmania?
Not at this time. This product is environmentally hazardous (a marine pollutant), so it is regulated as a dangerous good for sea and air freight and our carriers do not accept it on those routes. As every route to Tasmania involves a sea or air crossing, we can only deliver it within mainland Australia by road. If you are in Tasmania, please call us on (07) 5482 1692 and we will help you find an alternative product.
Can I Click & Collect from Gympie?
Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.

