Rhonox is Nufarm's most effective MCPA formulation for larger and difficult to control weed species. Rhonox is registered for use on small grains (not under seeded to legumes), flax or oats. Rhonox is most effective in areas with low humidity and can be tank mixed with sulfonylureas, dicamba and bromoxynil herbicides for prescription weed control.

Major Crop/Use**

  • Wheat, oats, barley and rye
  • Flax
  • Range and timber lands, fallow land
  • Established grass pastures and rangeland, grasses grown for seed, ornamental turf areas, non-crop areas


  • 2 x 2.5 gal/case – 36 cases/pallet
  • 30 gallon drum – 5 drums/pallet
  • 250 gallon tote
  • Bulk


  • MCPA Ester (67.9) (3.7 lbs/gal)


**Consult label for additional crop and rate information