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Old 08-12-2008, 02:19 PM
jondcoleman jondcoleman is offline
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Two applications of pre-emergent

I was at one of my larger properties yesterday and I am concerned about the amount of crabgrass. Right now, my program includes only one app of pre-emergent in early spring. Do most of you apply again in late spring/early summer?

Anybody apply pre-emergent in the fall or late summer? Thanks!
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Old 08-12-2008, 02:56 PM
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TforTexas TforTexas is offline
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We do down here, but in your neck of the woods a fall app won't do much of anything for crabgrass. Might prevent a little Henbit, Chickweed or Poa Annua but that's about it.
Depending on the Preemergant you use, determines how many apps you need in the Spring. Pendimethalin requires 2 apps where Stonewall (Barricade) or Dimension you can get away one.
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Old 08-12-2008, 03:43 PM
jondcoleman jondcoleman is offline
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Quote:
Originally Posted by TforTexas View Post
Dimension you can get away one.
I use dimension. Maybe I applied too little on this property?
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Old 08-12-2008, 03:48 PM
NINER NINER is offline
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Quote:
Originally Posted by jondcoleman View Post
I use dimension. Maybe I applied too little on this property?
TWO APPS DIMENSION AT FULL RATE TIMING IS THE KEY
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Old 08-12-2008, 05:58 PM
RAlmaroad RAlmaroad is online now
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Back when I was using Dimension, we put down a strong application(.21) between February 15 and March 15 at full strength according to bag. Dimension will last up to around 90 days or a little longer for strong applications. Somewhere around the end of May-1st week in June, another lighter .10 per bag instructions was put down. These would take care of the summer seeds. Crabgrass in Tennessee becomes active in July. This split application worked well. The only problems with Dimension is the root pruning. This did cut down on the number of weed treatments to only one in June and a few spots later in the year. The TN growing season or first frost could be as early as the end of September or 1st of October.
Long dissertation short--Yes two application are needed.
Now the SC properties--all together different. All liquids and Gallery
Roy
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Old 08-12-2008, 06:37 PM
n-green n-green is offline
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Dimension .10 X 2 @ 4lbs. per m2ft in spring.
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Old 08-12-2008, 07:10 PM
jbturf jbturf is offline
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excess watering/rainfall has proved to shorten the effective control of
some products like dimension,

im curious if split apping or two apps of pre-emergent- with 2 different
products would be more effective than just 1 product
such as pre-m for 1st and dimension for 2nd
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Old 08-12-2008, 08:50 PM
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RigglePLC RigglePLC is online now
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There is no money to support this type of research. Very good question. Nobody knows.
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Old 08-12-2008, 09:35 PM
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b121774 b121774 is offline
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I do 2 full apps., one early Feb. and again early May with pendulum or dimension. Only do fall apps. for bad poa problems.
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Old 08-13-2008, 03:55 AM
mngrassguy mngrassguy is offline
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2 apps Dimension .10 @ 4lbs/k in spring, 4-5 weeks apart.
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