More than 2,500 species of weeds impact Australian agriculture, costing around $4b annually. Priority weeds can also include 'notifiable' weeds - that is weeds that has a range of restrictions on their sale and movement and the relevant local authorities must be notified upon their detection.
Different states have different legislation governing priority and notifiable weeds. Producers should contact their local department of primary industries for further information on priority weeds and their obligations as landholders.
Example priority weeds
The weed species of greatest significance to a particular producer will vary according to local conditions and bioclimatic zones. Producers should refer to their state and regional agricultural department or available databases for a list specific to their area and situation.
Example priority weeds include:
- Mimosa (Mimosa pigra)
- Bellyache Bush (Jatropha gossypifolia)
- Prickly acacia (Acacia nilotica)
- Devils claw (Martynia annua)
- Lantana (Lantana camara)
- Tiger Pear (Oppuntia aurantiaca)
- Spiny Burrgrass (Cenchrus longispinus)
- Coolatai Grass (Hyparrhenia hirta)
If producers are concerned with the appearance of an unusual plant or weed infestation they should immediately contact their relevant regional or state authorities.
- Weeds Australia houses:
- EH Graham Centre for Agricultural Innovation's: Silverleaf Nightshade Best Practice Management Guide