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Aerate before or after pre-emergence app.?

Farbio

LawnSite Member
Location
Washington State
Should I do my aerations before or after I put down dimension 270G this spring. I use the granular products over liquid. I am new to herbicides and was just wondering if this would affect the barrier. Thanks.
 

James Cormier

LawnSite Bronze Member
Location
Ma
I would avoid aerations all together in the spring, but if you do you need to aerate first then pre-m.

I think any chemical has a hard time crossing the aeration hole in the spring so I would recommend doing your normal apps in spring and aerate in late summer early fall
 

sodzilla

LawnSite Member
Location
Cheyenne, WY
The Certified Turfgrass Professional course I'm taking through PLCAA and the Un. of Georgia states that aerating has no signifcant affect on the barrier. Detahtchind does but aerating doesn't. Don't ask me why. But thats what the book said.
 

envi lawn

LawnSite Member
Location
northeast
It seems that aeration should be performed prior to preemergent control as to not disturb the barrier created .
 

tremor

LawnSite Bronze Member
Location
Stratford, CT
Agreed. Given the easy (read profitable) choice apply after. But poking aeration holess through the barrier has very little impact on crabgrass control. Get the production done.
 

mikesturf

LawnSite Senior Member
Location
Chicago, IL
I took a course on weed control with the U of Illinois. The professor showed us a study that showed no difference if you aerate before or after pre-M. And no, I could not get a copy of the study.
 

TSM

LawnSite Senior Member
Location
MA
I am also familiar with the studies. However, its been my hands-on experience that you want to aerate first then apply your control.

I also agree that aeration is best left for the latter part of the season
 

James Cormier

LawnSite Bronze Member
Location
Ma
in my 19 years I ve seen alot of studies that didnt jive with the real world, I believe the Placcca study was saying aerate before prem and results wouldnt be effective.

Also read the label of any pre m product, it states right on there "Dont disturbe the barrier" To me aeration would disturb the barrier
Im sorry if my advise comes off as cocky or arrogant, and if anyones is offeneded its not intentional
 
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