I have applied Drive XLR8 4 times over the last couple of months on the same crabgrass. It seems to stunt its growth but it sure isn't killing it. I use the recommended label rate and sticker. I make sure it's been at least two days since mowing and wait at least 3 days before mowing. Irrigation is controlled to prevent washing it off the first day or so and then normal irrigation resumes. I even mixed a tracker last time to make sure I was hitting it good. Anybody else had this problem? Is there some kind of bad crabgrass in S. Florida that resists this stuff?
Crabgrass vs Drive XLR8
carbpow
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I have applied Drive XLR8 4 times over the last couple of months on the same crabgrass. It seems to stunt its growth but it sure isn't killing it. I use the recommended label rate and sticker. I make sure it's been at least two days since mowing and wait at least 3 days before mowing. Irrigation is controlled to prevent washing it off the first day or so and then normal irrigation resumes. I even mixed a tracker last time to make sure I was hitting it good. Anybody else had this problem? Is there some kind of bad crabgrass in S. Florida that resists this stuff?
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If you are in Florida, that might not be crabgrass. If you are working in bermuda or zoysia, Revolver, Monument or Celsius might do better.
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The efficacy of Quinclorac (drive) really depends on timing with the plants life cycle.
Research at Rutgers University here in NJ over the past 10 yrs since the inception of the material shows that from the 4 leaf to about the 5th tiller stage /early best efficacy is achieved /after 5 tillers the plant becomes too large and puts most of its energy toward seed production as it increases in size. As long as water is available for good uptake the 5 tiller control can be reached, if there is minimal water for uptake than usually the result is at 3 tillers.
When inflorescence (seed) finally pushes out the plant starts to reach the end of its life cycle and at that time Drive is effective again and will take it down all the way to the crown.
I have used this very research and it has been pinpoint time and again, in the mid stage when there are multiple tiller ( coffee can lid size ) plants Acclaim Extra ( phenoxaprop ) works the best for post control.
A strategy I use here in the north:
March 15 - April 20 / Barricade at .5 lb ai/a (Pre)
April 20 - May 31st / Dimension at .4 lb ai/a (Pre-post)
May 31st - June 20th / Drive at 1lb ai/a (post)
June 20 - August 15 / Acclaim at 28 oz /a (post)
August 15- mid sept / Drive at 1 lb/a (post)
Dave.
Research at Rutgers University here in NJ over the past 10 yrs since the inception of the material shows that from the 4 leaf to about the 5th tiller stage /early best efficacy is achieved /after 5 tillers the plant becomes too large and puts most of its energy toward seed production as it increases in size. As long as water is available for good uptake the 5 tiller control can be reached, if there is minimal water for uptake than usually the result is at 3 tillers.
When inflorescence (seed) finally pushes out the plant starts to reach the end of its life cycle and at that time Drive is effective again and will take it down all the way to the crown.
I have used this very research and it has been pinpoint time and again, in the mid stage when there are multiple tiller ( coffee can lid size ) plants Acclaim Extra ( phenoxaprop ) works the best for post control.
A strategy I use here in the north:
March 15 - April 20 / Barricade at .5 lb ai/a (Pre)
April 20 - May 31st / Dimension at .4 lb ai/a (Pre-post)
May 31st - June 20th / Drive at 1lb ai/a (post)
June 20 - August 15 / Acclaim at 28 oz /a (post)
August 15- mid sept / Drive at 1 lb/a (post)
Dave.
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That is a mean program for cool season turf. In warm season turf, Acclaim Extra(fenoxaprop) is best used on zoysia, it destroys all other warm season grasses.
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Hey Green -
Ya, seems to work real well ( expensive ) but effective. Here in the north east the summers have become more extreme and crabgrass pressure is high
Dave
Ya, seems to work real well ( expensive ) but effective. Here in the north east the summers have become more extreme and crabgrass pressure is high
Dave
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Cheaper than losing clients to weed control failures. I have had to use more preemergents than in the past. Mostly because the new postemergent herbicides have severe annual usage limits. Gone are the days of spraying MSMA when desired.
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I hear you on that, MSMA was some product.....
There are still some small quantities here in NJ, eastern PA.
I used a little this year for Dallisgrass.
Dave.
There are still some small quantities here in NJ, eastern PA.
I used a little this year for Dallisgrass.
Dave.
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Dave, i am in your region as well. Southeastern PA. We have had issues with crabgrass also. Acclaim works decent. but you def. have to pay a pretty penny for it. Where do you get your products from?
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With herbicides I go right to the manufacturer, if you know how much you need for the season and order in bulk they will give good discounts.
You can find really good deals on line as well.
Stay away from JDL and stores that mirror it........ Highest prices, they mark up the products sometime as much as a 3rd.
Dave.
You can find really good deals on line as well.
Stay away from JDL and stores that mirror it........ Highest prices, they mark up the products sometime as much as a 3rd.
Dave.
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Your weed is probably Tropical Signalgrass. Drive does not work on it.
Tribute Total will work in Bermudagrass. I do not know how to control it in SA or zoysia. I encounter this weed more often than crabgrass in South Fl.
Post some picks.
Tribute Total will work in Bermudagrass. I do not know how to control it in SA or zoysia. I encounter this weed more often than crabgrass in South Fl.
Post some picks.
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Not just a surfactant but the right surfactant and at a higher rate is what works with Drive.
.
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i used drive xlr8 here this summer, with chameleon sticker, fried cg without a doubt.
Took a sample to the local UF office and sure enough it is Signalgrass. Apparently it's a bear to get under control.
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Celsius applied in 1/2% MSO. Tribute is only labeled for Bermuda, however SA and zoysia will tolerate the AIs in it. Take note that one application of Tribute blows an application of Celsius, Revolver and Sedgehammer.
I'll look for Tribute. If I can't find it I'll get Celsius.
I would be very cautious using Tribute Total on anything other bermudagrass. I did contract research for Bayer in south FL, south TX, and central AL. I saw unacceptable injury on St. Augusinegrass, two Zoysia spp., and centipedegrass.
I don't know that it would be illegal to use it in grasses other than bermudagrass, but you do forfeit you warranty protections. So, if you have damage in those areas, Bayer won't help you.
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The injury to centipede is expected. After all, Revolver is labeled for suppression/removal of centipede in bermuda or zoysia. As for the other grasses, I have seen injury even from applying labeled products. If the grass is not on a high fertility program, not kept on an irrigation program that meets its ET requirements and not mowed at the right height, using proper equipment, anything is possible. Therefore, I do not touch a lawn deficient in any of those three areas.
My vendors know that a do it all pre mix is a hard sell to me. On a given day, I might see every species of warm season grass with different combinations of weeds.
Adding halosulfuron or sulfosulfuron to other sulfonylurea herbicides changes turf tolerance. I do well to leave it out and deal with nutsedge later.
My vendors know that a do it all pre mix is a hard sell to me. On a given day, I might see every species of warm season grass with different combinations of weeds.
Adding halosulfuron or sulfosulfuron to other sulfonylurea herbicides changes turf tolerance. I do well to leave it out and deal with nutsedge later.
Celsius it will be, had a problem finding Tribute close by anyway, besides I don't want to push the envelope too much. As soon as the rain subsides I'll give it a squirt.
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