Fall Weed Control In Pastures

As perennials prepare for the upcoming winter they move energy reserves from shoots to their perennial vegetative reproductive structures e g.

Fall weed control in pastures.

For instance metsulfuron containing herbicides chaparral can give excellent weed control but also can suppress tall fescue yield if used in the spring. Early summer tends to be a primary time for weed control in pastures but fall can also be an appropriate time to manage certain weeds with a systemic herbicide in grass hay and pastures that have been mowed or grazed. Fall is not generally the right time to control many pasture weeds. Fall is the best time to control some notorious weeds in pastures and other grasslands according to north dakota state university extension specialists.

This tank mixture works better on chickweed in the fall compared to spring applications where it typically provides only about 50 60 control. P and k level increases also resulted in fewer weeds. Leafy spurge and invasive thistles can be challenging to control in pasture and grasslands due to their extensive root systems says miranda meehan extension livestock environmental. The most common herbicides used for control of many broadleaf weeds in grass hay pasture this time of year are the plant growth regulator herbicides such as 2 4 d dicamba banvel clarity etc triclopyr products crossbow garlon etc and clopyralid stinger pasturegard etc.

Systemic herbicides applied at this time are translocated along with the energy. However some perennial weeds are effectively controlled by fall herbicide applications. In particular biennials such as common burdock and bull and musk thistles are much easier to kill while they are in the rosette stage of growth and prior to surviving a winter. Fall is one of the best times for managing perennial and biennial weeds found in pastures or other areas maintained in perennial grass.