9 tips to successful chemicalfree weed management
Soil test and fertilise accordingly.
Select adapted species combinations, eg horses and sheep.
Maintain proper ph.
Use appropriate seeding rates. Control perennial weeds prior to seeding.
Practice rotational grazing.
Walk pastures to catch emerging weed problems. Control developing weed problems by hand cutting or mowing.
Consider renovating pastures that are beginning to develop weed problems.
SOURCE: http://host.cals.wisc.edu/ renzweedsci/1996/10/04/weed-controlin-pastures-without-chemicals/