Proclus is an exciting step forward for pre-emergence control of black-grass in winter wheat. Based on the active aclonifen, Proclus is only available as part of a co-pack with Liberator (flufenacet + diflufenican) for farmers and spray operators to tank-mix themselves.
Mixes of Liberator plus Proclus provide 10-15% greater control of black-grass with more consistent performance compared to straight Liberator. There are also improvements in rye-grass and brome control of 5-10%.
Proclus is active on the soil surface and affects shoots as they emerge through the soil. The soil surface activity complements the activity of flufenacet in the rooting zone to get effective weed control in a range of conditions. Proclus is also fairly persistent so provides good protection during the autumn and early winter.
Proclus is a pre-emergence only herbicide so is not suitable for inclusion for residual top-ups later in the autumn or in tank-mixes with contact acting herbicides like Atlantis OD (mesosulfuron + iodosulfuron)