Spot spraying with roundup on dormant centipede

[LawnsharkMB]

Is it safe? I've been told that it is and that it isn't.
Posted via Mobile Device

[imow in NC]

Hey, I am in Wilmington, NC only a few miles away. What is it you are trying to kill off?

[LawnsharkMB]

Originally Posted by imow in NC

Hey, I am in Wilmington, NC only a few miles away. What is it you are trying to kill off?

Actually I've already done it. I worked at a golf course for a couple years and we would spray barricade and roundup in the rough (bermuda) starting in mid February. I recently spot sprayed an entire property of centipede with Prosecutor 3oz./Gal. Now I'm reading online that its not safe to spray glyphosate on dormant centipede, st Augustine, or zoysia. Weeds were mainly cudweed, tall fescue, poa, and henbit.

Now I'm worried I will have a bunch of dead grass come spring time.
Posted via Mobile Device

[imow in NC]

This time of year I am using a mix of Atrazine 4L / Manor / and or southern speedzone. that way i can do a little pre and post at same time.

[LawnsharkMB]

Originally Posted by imow in NC

This time of year I am using a mix of Atrazine 4L / Manor / and or southern speedzone. that way i can do a little pre and post at same time.

I'll have to try that. What do you think about the glyphosate on dormant grass?
Posted via Mobile Device

[imow in NC]

Dormant grasses are not dead grasses. just the leaf material is brown. Roots very much alive. roundup kills to the roots.

[LawnsharkMB]

Originally Posted by imow in NC

Dormant grasses are not dead grasses. just the leaf material is brown. Roots very much alive. roundup kills to the roots.

Great. Thanks.
Posted via Mobile Device

[grassmasterswilson]

Centipede rarely goes fully dormant like Bermuda here in nc. You may have some dead steaks come green up time but should recover.

I'd never use round up on anything but fully dormant Bermuda.
Posted via Mobile Device

[Smallaxe]

Gly kills to the roots,,, but I thought it only gets to the roots systemically through the actively growing leaves... When the leaves are dormant and brown there is no longer any translocation from the above ground material to the below ground material...

Plz let us know how your spraying worked out... If it killed the weeds and If it harmed the lawn grass in any way...
This question has been kicked around for years now and nobody seems to have any anecdotal info about it... the Official Info. is strictly CYA...

[imow in NC]

Weed Control
Apply preemergence herbicides to control crabgrass, goosegrass, and foxtail. Apply by the time that dogwoods are in full bloom. Apply postemergence herbicides in May as needed for control of summer annual and perennial broadleaf weeds such as knotweed, spurge, lespedeza, etc. Do not apply until 3 weeks after greenup. Centipedegrass is sensitive to certain herbicides (e.g. 2,4-D), so follow label directions and use with caution. VIA Turf Files at NC state.