Once the herbicide effect has ceased, growth of desirable plants should be encouraged to fill the bare spaces created. This will maximise the benefits from the treatment and reduce the chances of other weeds replacing the annual grasses that were removed.
The gaps can be filled by increased growth of existing sub-clover or growth of new species introduced with over-sowing.
Perennial grasses provide greater long-term control of Vulpia species compared to sub-clover because of their upright growth habit, but they are less effective at filling bare spaces created by removing annual weeds.
Apply rotational grazing until plants begin flowering. The aim is to keep the pasture between 3–8cm to allow sub-clover runners to grow into the gaps and stimulate new tiller growth on the grasses. Relax grazing pressure during sub-clover flowering to maximise seed set (MLA fact sheet).
Adequate soil fertility will also assist in the growth of sub-clovers and perennial grasses.