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meeple
USA Fan
Member since May 2011
6115 posts

When to put down preemergent?
Have some prodiamine to put down.


OleWarSkuleAlum
Alabama Fan
Member since Dec 2013
7461 posts

re: When to put down preemergent?
Before soil temps reach 70F. So very shortly depending on where you live.


meeple
USA Fan
Member since May 2011
6115 posts

re: When to put down preemergent?
S La
This post was edited on 10/4 at 11:19 am


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
907 posts

re: When to put down preemergent?
Now for S LA


jimbeam
USA Fan
University of LSU
Member since Oct 2011
56733 posts

re: When to put down preemergent?
LINK

Soil temp 70 degrees


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reauxl tigers
Chicago Cubs Fan
Tiger Woods Fan
Member since Aug 2014
2098 posts

re: When to put down preemergent?
55° in the spring, 70° in the fall


TigerEye2
LSU Fan
Prairieville
Member since Aug 2011
284 posts

re: When to put down preemergent?
Best preemergent to use on centipede in S. Louisiana?


jimbeam
USA Fan
University of LSU
Member since Oct 2011
56733 posts

re: When to put down preemergent?
I just bought some more Prodiamine.

0.45oz/1000sf within the next week or so (approaching 70degree soil temp rule)

Another 0.30oz/1000sf in the spring once temps are nearing 70 degrees again in the spring


meeple
USA Fan
Member since May 2011
6115 posts

re: When to put down preemergent?
Why the exact measurements? I have St Aug. I read that the Max per year is .83 Oz/1000 SF. So is that divided up between the two applications in fall and spring?

Looks like the 24 hr avg for me is currently 83 so I may have a week or so
This post was edited on 10/4 at 7:59 pm


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
907 posts

re: When to put down preemergent?
ETA. I contacted Dr Ron Strahan, turf weed control specialist and professor with the LSU AgCenter today to verify if now was the appropriate time to apply pre-emergent herbicides in S LA for winter weeds his answer was “yes”.


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TygerB8
LSU Fan
Youngsville
Member since Jul 2005
998 posts

re: When to put down preemergent?
Thanks to all in this thread for the heads up. I put some down yesterday


broadhead
Member since Oct 2014
838 posts

re: When to put down preemergent?
Will preemergent prevent dollar weed ?


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
907 posts

re: When to put down preemergent?
quote:

Will preemergent prevent dollar weed ?


No because dollarweed reproduces by underground rhizomes and tubers in addition to seeds.


meeple
USA Fan
Member since May 2011
6115 posts

re: When to put down preemergent?
Just mowed my grass/leaves today. Can I put down prodiamine (St Aug) tomorrow? Or are we expecting a downpour that will wash it all away next week?


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
907 posts

re: When to put down preemergent?
Put it down tomorrow and hopefully we get sufficient rain next week to water it in. If not put out sprinklers. Just follow label instruction on the bag.


meeple
USA Fan
Member since May 2011
6115 posts

re: When to put down preemergent?
So it doesn’t look like it will get washed away


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
907 posts

re: When to put down preemergent?
Not based on the weather forecast I’m looking at

This is from the Prodamine 65 WDG label “For optimum weed control, Prodiamine 65WDG should be activated by at least 0.5 inch of rainfall or irrigation before weed seeds germinate and within 14 days following application. See the map below for approximate crabgrass seed germination dates“.


tigerfan5959
LSU Fan
Member since Jun 2010
244 posts

re: When to put down preemergent?


meeple
USA Fan
Member since May 2011
6115 posts

re: When to put down preemergent?
I think that’s the generic form of prodiamine. I can’t comment on its effectiveness.


tigerfan5959
LSU Fan
Member since Jun 2010
244 posts

re: When to put down preemergent?
Is there a different granule that you use ?


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