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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

I’m pretty sure I left my edgeguard on when I applied my preemergent. I used the hi yield w/ dimension at 4lb/1000ft. Can I reapply with out hurting anything? I think The label says I can go up to 9lbs/1000 but want to double check with people more knowledgeable than me.

Also got the prodamine in that I ordered so I could use that as well so I don’t have to get more hi yield.



That would be fine provided you don’t exceed the 9 lbs/1000 sq ft total of Dimension, but why don’t you use Prodiamine since you have it. Just don’t exceed the 0.4 oz (1 1/2 teaspoons) per 1000 sq ft. ( I assume you ordered the spray version).
This post was edited on 10/1 at 7:22 pm


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

If the 5-day soil temp average needs to be 70 degrees for the fall app of pre, does the same go for the spring app or is it a different temp average?


No - late winter/early spring soil temperature of 55 F, the temperature at which crabgrass seeds germinate.


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Pooswa
LSU Fan
Member since Jul 2018
75 posts

re: When are you applying your pre emergent?
quote:


That would be fine provided you don’t exceed the 9 lbs/1000 sq ft total of Dimension, but why don’t you use Prodiamine since you have it. Just don’t exceed the 0.4 oz (1 1/2 tbsp) per 1000 sq ft. ( I assume you ordered the spray version).



Yes I did and will do this weekend ..thanks.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

Yes I did and will do this weekend ..thanks.

Please note I made a typo in my post above regarding Prodiamine 65 WDG and I’ve corrected it. 0.4 oz Prodiamine = 1 1/2 teaspoons, Not 1 1/2 tablespoons


Pooswa
LSU Fan
Member since Jul 2018
75 posts

re: When are you applying your pre emergent?
Noted.


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Conch Shell
LSU Fan
Somewhere in the sun
Member since Feb 2013
52 posts

re: When are you applying your pre emergent?
Ronk, I may have missed it elsewhere, can you please share your preemergent schedule? Also, is it the schedule applicable to centipede? I'm in Covington if that impacts the schedule.


jimbeam
USA Fan
University of LSU
Member since Oct 2011
65471 posts
 Online 

re: When are you applying your pre emergent?
Yes the pre emergents discussed by large in here are applicable to Centipede. Spray in the fall right before soil temps hit 55. Use Greencast website to determine this. I use half of the yearly rate during this app. Then in the spring, as the soil temp is approaching 55 again (on the uptick), spray again with half of the yearly rate.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

jimbeam

jimbeam did you mean to say 70 F for soil temp in the fall - the temp at which Poa seeds germinate?
This post was edited on 10/2 at 10:27 pm


jimbeam
USA Fan
University of LSU
Member since Oct 2011
65471 posts
 Online 

re: When are you applying your pre emergent?
Yeah sorry. Running on low sleep lol


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Conch Shell
LSU Fan
Somewhere in the sun
Member since Feb 2013
52 posts

re: When are you applying your pre emergent?
Sorry crawdude, I accidentally downvoted and don't see how to change it.

Thank to jimbeam for the answers as well.


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jimbeam
USA Fan
University of LSU
Member since Oct 2011
65471 posts
 Online 

re: When are you applying your pre emergent?
Just refresh and hit upvote

The more you know


oOoLsUtIgErSoOo
LSU Fan
Louisiana
Member since Aug 2006
25760 posts

re: When are you applying your pre emergent?
I got my pre emerg down yesterday. Is there any use of applying again in November? Or is the one application all that's needed?


CenlaLowell
UMass Fan
Alexandria, la
Member since Apr 2016
610 posts

re: When are you applying your pre emergent?
Only if you had a different mode of action


oOoLsUtIgErSoOo
LSU Fan
Louisiana
Member since Aug 2006
25760 posts

re: When are you applying your pre emergent?
quote:

Only if you had a different mode of action


What does that mean?


jimbeam
USA Fan
University of LSU
Member since Oct 2011
65471 posts
 Online 

re: When are you applying your pre emergent?
A different chemical


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

oOoLsUtIgErSoOo

Basically it means how the herbicide kills the targeted weed at the cellular level - not all pesticides are designed to kill the target pest in the same way. Often time one likes to use pesticides with different modes of action so that the pest organisms don’t develop resistance to the pesticide - this is particularly true of insecticides.

But to answer your question on a second application of pre-emergent I don’t think you need to do this this year - just hold off and don’t make another Prodiamine application until your late winter/early spring application in early/mid Feb, but if you find certain winter weeds escaped your recent Sept Prodiamine application, then come back on the board so that those weeds can be identified and then perhaps some on the this board might recommend an a second application of pre-emergent with a different mode of action, for example, simazine, next Nov.

BTW, are you getting on top of that Dallisgrass issue?
This post was edited on 10/3 at 10:27 am


oOoLsUtIgErSoOo
LSU Fan
Louisiana
Member since Aug 2006
25760 posts

re: When are you applying your pre emergent?
quote:

BTW, are you getting on top of that Dallisgrass issue?


No. It's still there, except for my round up and digging I did once. I saw some, what I think is, clover starting to pop up already, so I hit that with MSM. From what I can find, I'm out of options with the Dallis grass unless I keep killing and digging.

I even went to my local feed store. They have been super helpful so far. They suggested sledgehammer, but said I would have to really stay on top of it with even that. Likely that it would just suppress it and it would continue coming back.
This post was edited on 10/3 at 9:27 am


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

From what I can find, I'm out of options with the Dallis grass unless I keep killing and digging.

Seems like that and suppressant herbicides are your best options, but I bet if you are persistent you’ll get on top of it. I’m fortunate of never having to deal with it.

Did you always have Dallisgrass and just become aware of it since you started taking lawn weed control seriously this past spring?


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

Sorry crawdude, I accidentally downvoted and don't see how to change it.

My wife downvotes me a few times a day and she ain’t even a TD member.


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oOoLsUtIgErSoOo
LSU Fan
Louisiana
Member since Aug 2006
25760 posts

re: When are you applying your pre emergent?
quote:

Did you always have Dallisgrass and just become aware of it since you started taking lawn weed control seriously this past spring?


I'm assuming yes. It just sticks out even more now that it's the main non desirable grass I have left. That is until the clovers appeared again, but that's a battle I've won before.


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