6 ORGANIC WAYS TO CRUSH YOUR CALI THISTLE PROBLEM
1 DEEP RIPPING/SUBSOILING TO CRUSH THE UNDERGROUND RHIZOME
This requires the use of specialist equipment but it basically crushes the root system.
THE USE OF GOATS
Goats are more partial to thistle than cattle and sheep.
MOW IN THE RAIN
This has been validated by Agresearch - mow thistles off in wet conditions which allows for greater transfer and infection of a range of fungal diseases into the cut stems.
4 USING NOVEL MACHINES SUCH AS THE COMBCUT
This is a specialist cutting system that is considerably faster than toppers or mulchers.
5 PASTURE AND CROP COMPETITION
Research shows Cali thistles struggle when under heavy competition from plants like chicory and lucerne, or mixes of green manure cover crops like triticale, rye and vetch.
Mowing regularly cuts back the leaves, meaning the root system runs out of the energy it needs to keep growing.