Taking steps to understand, prevent and deal with pests, weeds and diseases is crucial for biosecurity on farm

A stepped approach to biosecurity is needed to tackle on-farm biosecurity.

1 Understand the threat

Pests, weeds and diseases can arrive on a farm through numerous pathways, including:

• storage structures such as sea containers;
• grain and livestock-handling machinery and equipment;
• soil and plant residues; and
• incoming animals, grain or hay.
• Natural pathways, such as wind, water, wild birds, insects and feral animals also pose risks that are more challenging to control.

Threats often enter unnoticed during routine operations, gaining unrestricted access that allows establishment in productive areas.

2 Take pre-arrival precautions

Effective biosecurity starts before new arrivals enter the property. That risk could be fodder or livestock.

It can be managed by:

• researching pest, weed or disease incursions at the source property, district and region;
• requesting pest-free declarations or certifications, proof of on-farm quality assurance programs, and details of monitoring and testing regimes;
• inquiring about inspections conducted and health certifications issued according to your state’s biosecurity legislation; and
• confirming that people, machinery and equipment are clean upon arrival.

By taking these steps, the risk of weeds, pests or diseases being introduced can be assessed.

3 Implement quarantine upon arrival

Managing new livestock arrivals and feeding imported fodder and grain in isolation or quarantine paddocks is one of the most effective biosecurity measures. This approach provides a physical barrier that prevents entry and establishment of pests, weeds and diseases.

4 Upgrade protection

A well-designed quarantine paddock is essential for effective biosecurity. Follow these best practices:

• Location – position the quarantine paddock near the farmhouse or working area, ideally close to handling yards, to minimise movement across the farm.
• Maintenance – thoroughly clean water and feeding points and allow the paddock to rest or be used for cropping after quarantining new stock before reusing it again for grazing.
• Water flow management – ensure water flow from the quarantine area is controlled and directed away from other paddocks to prevent contamination.
• Double fencing – install a double fence around the quarantine paddock to prevent nose-to-nose contact, reducing the risk of disease transmission.
• Regular inspections – routinely inspect boundary fences for security and repair any gaps to ensure they are stock-proof.

A proactive approach to biosecurity is essential for protecting your farm from potential threats.

If you see anything unusual, report it to your agronomist or veterinarian, and call the Exotic Plant Pest Hotline on 1800 084 881 or Emergency Animal Disease Hotline 1800 675 888.

For more detailed guidance, refer to the Biosecurity manual for grain producers and other resources available from the Farm Biosecurity Program, and Agriculture Victoria.