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AHCCAQA GreenfieldSimulated workplace
Simulated workplace
Scenario · Farm Operations

Plan and apply a broadleaf herbicide to a wheat crop

You are a Farm Hand with chemical user accreditation in the Farm Operations team.

Intermediate3 to 4 hours7 tasks
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Home/Scenarios/Plan and apply a broadleaf herbicide to a wheat crop
The situation

What has happened

The wheat in paddock 12 is at stem elongation and broadleaf weeds are past threshold. The Irrigation and Plant Supervisor has created a planned entry in the Chemical Use and Storage Register and wants the job done on Friday morning before the crop passes the label growth stage. The boom sprayer was calibrated last month and the calibration record is in the Plant and Equipment Register. A neighbour's vineyard runs along the eastern boundary and a drainage channel crosses the northern corner. The forecast is for a light westerly early, strengthening by mid-morning.

Your brief. Plan, prepare, apply and record a compliant herbicide application to 110 hectares of wheat, meeting the label, the weather conditions and the buffer distances, with every step documented in the Chemical Use and Storage Register and the sprayer pre-start records.
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Tasks

Deliverables

  • Job plan with buffers and stop conditions
  • Product quantity calculation with second check
  • Sprayer pre-start record
  • Completed Chemical Use and Storage Register entry
  • Field Activity Log entry

Documents to use

Systems to use

Chemical Use and Storage Register

The legal record of every chemical application and the store inventory, including product, rate, target, weather, applicator and withholding periods.

Field Activity Log

The record of every paddock, orchard, nursery and conservation site activity, from sowing and harvest to planting, monitoring and weed control.

WHS Incident and Hazard Register

The register of injuries, near misses, hazards, chemical exposures, machinery and livestock incidents across all sites, with investigation and corrective action tracking.

For trainers and assessors

Units of competency

Current on training.gov.au for the Agriculture, Horticulture and Conservation and Land Management Training Package as at 10 September 2026.

AHCCHM307Prepare and apply chemicals to control pest, weeds and diseases
AHCCHM304Transport and store chemicals
AHCPMG301Control weeds
AHCMOM315Operate chemical application machinery and equipment
AHCWHS202Participate in workplace health and safety processes

Qualifications

AHC30122Certificate III in Agriculture
Assessor notes

What to look for

Evidence guide

Evidence must show the label read and applied correctly, a correct quantity calculation with an independent check, buffer distances to the vineyard and channel, explicit wind and temperature stop conditions, correct personal protective equipment and mixing sequence, and a complete register entry with the withholding end date. Check that rinsate is never directed to the channel.

The student's evidence summary lists every record they created or changed in the systems named above, their notes and the tasks they ticked. Verify it against the deliverables and your own assessment tool.