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Armyworms or Sod Webworms?

6.2K views 34 replies 8 participants last post by  UFG8RMIKE  
#1 · (Edited)
After flushing my AC drain tonight I noticed these had come up from my inadvertent soapy water test. I have also been noticing lately some very dead looking areas under my canopy. I did a soapy water test and saw nothing but this is a different area and I’m sure they are related. Pictures below of the “damaged turf” and the guys I found tonight! Just applied Bifen XTS at .50oz/M last Friday….

FYI - Some bronzing in the pictures at the bottom is from my initial PGR app. I don’t have the photos that really show the area under the canopy that’s yellow. I know it is normal for Bermuda to be yellow in the thatch later but some areas were worse than others I think the last picture captures that best.

I have Imidacloprid ready to apply already for some stubborn mole crickets but wonder if there is a better curative for these worms

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#3 ·
I'm not sure, looks like a sod webworm. But larger. Well, I've only seen the small baby ones. So this may just be an adult. idk. Very common in Florida. And year-round issue here in South Florida.
Altriset, it's the same active ingredient as Acelepryn, but is cheaper. just have to look around to find some. I was applying this monthly at 4 oz/acre last year.
 
#4 ·
Nice find on the price. Monthly seems like a lot to be spraying something systematic. My last application was in May and it seems to be still going strong. I will probably do a second application at the end of this month just to be safe. I also have some bougainvillea that are getting hit with caterpillars that will get a dose.

Also interesting that it is labeled for termites. Might be another added benefit to spraying the whole yard with this.
 
#7 ·
Is Imidacloprid effective at all on sod webworms or army worms? I have that already on hand, just haven't applied yet.

It's unfortunate that Acelepryn doesn't list mole crickets and Imidacloprid doesn't list armyworms or sod webworms. More applications!

Just pulled the trigger on the 4oz bottle of Acelepryn
 
#11 ·
34 oz bottle is only slightly more. Unless you found some kind of deal on 4oz. that I’m not seeing.

‘I have sodweb worm, was getting ready to spray imidacloprid tomorrow until I saw this post. Everything I’ve seen says sodweb worms are easy to control however, I think I may just grab the Altriset 34oz
 
#9 ·
You can buy Monterrey BT for pretty cheap. It’s organic and it kills army worms and fall webworms. Not sure if that’s the same thing you’re referencing. It’s easily available too. Just another option. The only issue is it has to be ingested. So if you rinse it off the leaf, then it won’t do anything.
 
#10 ·
I bought the Coragen for around $260 for 32oz. I thought that was a pretty good deal. The Altriset is cheaper and the same amount of AI for around $200.

I sprayed Bifen and Imidacloprid time and time again. For anything sod webworm, cutworm, grub, or army worm based, this 18.4% Chlorantraniliprole kills them fast, good, and long.
 
#12 ·
The reason I never applied Altriset is that the inactive ingredients aren’t listed on the label combined with the fact that it wasn’t labeled for turf. Now it seems to be going in short supply due to manufacturer discontinuation (allegedly). I didn’t want to risk finding out the hard way that there is some kind of difference between Altriset and Acelepryn that could harm my grass.

Regardless, it’s good to know of the various product offerings just in case. Hence I mentioned Coragen as an alternative.
 
#21 ·
Acelepryn / GrubEx is an incredible product. Once you start using it preventively, I just cannot foresee you having a problem. That being said, I don't know how quickly it knocks down mature larvae. I was shocked by how fast my Sod Webworm problem came on a few years back (before I was using GrubEx) and now if my neighbors have an outbreak, I recommend they go straight for trichlorfon and follow it up with GrubEx or equivalent.
 
#22 ·
Hopefully it knocks them down rather quickly and I will start using it as a preventative, it is the same AI as GrubEx at a much higher concentration and if timed right should provide season long protection once the original infestation is remedied. I am sure the worms came with some of the sod as I noticed a few of them while shredding into sprigs.

At .20oz/1000 I will only get 2.5 apps so I'm hoping that one application lasts a season, otherwise its quite expensive. .20oz/1000 is rumored to be the best all around rate to cover the broadest range of possible pests...
 
#27 ·
So....0.5/k Imidacloprid did nothing for the sod webworm infestation, if anything they are worse.

Time to fork over the $ and hit them with something harder. Sprayed Imida on 7-29. Mowed yesterday and moths everywhere. Imida is contact and systemic, so I would believe it should have had an affect on the adult moths.

Does Acelepryn offer long term/systemic control of these bastards? Our covered lanai is literally covered with them. I haven't done a soak test and haven't seen the worms but there are 1,000's of adults. It's odd, I really don't see any damaged areas or chewing marks on the turf.
 
#32 · (Edited)
Just got the quart of Corgen, 4oz in 41 gallons over one acre is a crazy dilution. We will see how it goes. It's hard to imagine this little product in the amount of carrier would work. It's so damn hot here in FL, I always spray around 7pm.

From comments on domyown, it appears the product is systemic, so it sounds like it should be watered in afterwards?

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#34 ·
If you read the Acelepryn label for web worms is says dont water or mow for 24 hours after application.

In both my applications we got a bunch of rain about 6-7 hours after application and it still worked fine. In fact I just did a soapy water test today and nothing crawled out of the ground. This stuff is crazy good.