Khaki weed poses biosecurity threat to Aldinga area
Immediate action needed
The declared and notifiable plant, Khaki weed (Alternanthera pungens), is now known to be present on at least five properties in the Aldinga region.
This plant is a serious biosecurity threat to local agriculture. Each plant produces a large number of spiny burrs (seeds) which can injure stock, wildlife and contaminate crops.
With vintage now in full swing, the potential for the weed to be spread by machinery is high. If it becomes established on your property, it will be very costly and troublesome to control.
We need your help to stop this serious biosecurity risk spreading in the area
Here’s how you can help:
- Please rigorously follow all hygiene procedures when washing down machinery and moving between properties.
- If you see the weed on your property, please notify Natural Resources AMLR immediately on 8550 3400.
Natural Resources Adelaide and Mt Lofty Ranges is working closely with landholders where Khaki weed has been found. Although there are only a few known sites, it is important landholders and government agencies work to limit its spread.
Please consider the potential impact for your own property and for your fellow grape growers.
The main hazard is the Khaki weed burr which can be easily spread by harvesting machinery and equipment. Burrs can also be moved on clothing, footwear and by animals.
Controlling Khaki weed during vintage
To ensure this weed does not spread further in the area, all growers and contractors are urged to take the following steps during grape harvest:
- strictly follow hygiene procedures when washing down machinery
- check all clothing, shoes and vehicle tyres for burrs before moving to another property
- check the ground, especially around irrigated areas and high traffic areas, for this plant
- if you find a plant, dig out the whole plant including the tap root
- collect any burrs left on the ground – a towel or cloth will be handy as the burrs readily cling to fabrics
- dispose of plants and burrs in a sealed plastic bag and bury on site if possible
- don’t leave pulled plants on the ground
- notify Natural Resources AMLR on 8550 3400 – a staff member will visit you to discuss next steps
Khaki weed identification note