A strategy to control herbicide resistant weeds is to use an impact mill to devitalise weed seeds as they exit a combine harvester.
Although native NWM is rarely considered a nuisance or targeted for control with herbicides, both EWM and hybrids are considered invasive and are frequently targeted for control with herbicides to limit their negative impacts on biodiversity and ecosystem services in many lakes and rivers.
Leafy spurge is very difficult to control with herbicides, insect biological control agents, and other cultural practices.
Chemical control using herbicides applied at the seedling stage or on early regrowth has given encouraging results.
This has led to some farmers switching to continuous cropping using grain legumes and fertilizer to supply nitrogen, minimum tillage to maintain soil physical conditions, alternation of cereals with grain legumes, pulses and oilseeds for disease control, and herbicides for weed control.
In arable areas, grasslands will continue to have a role in crop rotations for increasing nitrogen supply, disease breaks and weed control as herbicide resistance reduces the effectiveness of herbicides.
Roadside seedlings have been effectively controlled by herbicides.
Sheep grazing is a long-term solution best used in conjunction with other methods, like beneficial insects, controlled burns, herbicides and hand pulling, officials said.
Chemical weed control (see herbicide) has been used for a very long time: sea salt, industrial by-products, and oils were first employed.
The experimental design incorporated vegetation restoration treatments (sheep grazing and Calluna vulgaris seeding) at split-plot levels within P. aquilinum control treatments (herbicide and cutting in different combinations).
