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  #41  
Old 10-03-2012, 09:46 PM
Cadzilla Cadzilla is offline
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Originally Posted by Landgreen View Post
Wow.

This thread has been very informative though I'm not sure why all of a sudden I'm getting insulted. I guess its the drawback to a big site like this that attracts a little bit of everything.

FYI as a lawn care professional I did notice the damage early on and it was isolated to only 1000sf. But I sampled the entire complex and realized infestation was throughout. That's why I had to apply curative to the whole property.

Also as a lawn care professional I know how to spell Imidacloprid lol.

So just relax...
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1000 sq ft of damage on 87000 sq ft is minor. It may not have been necessary to apply curative to the entire property but probably not a bad idea.

You guys are a real thin skinned bunch around here.

To be honest I'm not even sure anyone who manufactures Merit (hows that....spelled right?) even claims you get 100% control.

The idea in my opinion is to get the insect population below the damage threshold.
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  #42  
Old 10-03-2012, 10:00 PM
Landgreen Landgreen is online now
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Quote:
Originally Posted by Cadzilla View Post
1000 sq ft of damage on 87000 sq ft is minor. It may not have been necessary to apply curative to the entire property but probably not a bad idea.

You guys are a real thin skinned bunch around here.

To be honest I'm not even sure anyone who manufactures Merit (hows that....spelled right?) even claims you get 100% control.

The idea in my opinion is to get the insect population below the damage threshold.
5 grubs per square foot is the threshold I have always used. I was seeing 10-20! Bad news. They had to go.
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  #43  
Old 10-03-2012, 10:07 PM
Landgreen Landgreen is online now
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Originally Posted by jbturf View Post

bayer has sent me a pallet of dylox
Thats good news. My distributor put in a request to their supplier. Waiting to see what they say.
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  #44  
Old 10-03-2012, 10:55 PM
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phasthound phasthound is online now
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I doubt Dylox will be effective on grubs now.
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  #45  
Old 10-03-2012, 11:07 PM
Cadzilla Cadzilla is offline
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Originally Posted by phasthound View Post
I doubt Dylox will be effective on grubs now.
Why do you think that?
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  #46  
Old 10-03-2012, 11:12 PM
Cadzilla Cadzilla is offline
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Originally Posted by Landgreen View Post
5 grubs per square foot is the threshold I have always used. I was seeing 10-20! Bad news. They had to go.
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Yikes. I don't think I have ever seen grub pressure that bad. I didn't mean to be a dick, but don't count Merit out for a failure now and then.

It's really the best insecticide to come out in the last twenty years ( well that and bifenthrin) and has protected a lot of turf and made us all a lot of profits!

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  #47  
Old 10-04-2012, 07:06 AM
Landgreen Landgreen is online now
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Originally Posted by phasthound View Post
I doubt Dylox will be effective on grubs now.
Dylox should be ok. In my area I would still apply it until the end of October. Grubs go deep when they need to avoid frost which will be a while yet.
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  #48  
Old 10-04-2012, 07:44 AM
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phasthound phasthound is online now
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While grubs are still near the surface, they are now in their 3rd instar and are difficult to control.
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  #49  
Old 10-04-2012, 08:05 AM
jbturf jbturf is online now
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Originally Posted by phasthound View Post
While grubs are still near the surface, they are now in their 3rd instar and are difficult to control.
barry our grubs our behind schedule and small, i suspect they are now in 2nd instar size, umass predicts 70% control i think i read at about this time w/dylox

but obviously different grubs are at different stages, jab beetle grubs would likely be in 3rd instar here now, but im not really seeing them

product used allectus .225% + fert / high resi rate
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  #50  
Old 10-04-2012, 03:15 PM
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phasthound phasthound is online now
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That's a good point.

Here is the reply I received from Rich Buckley at the Rutgers Plant Diagnostic Lab regarding break though with Merit.
I have not heard anything specific for this year, but I don't doubt there were control failures. Merit will not control asiatic garden beetles. It is known that they will invade areas as a secondary pest once the oriental and japanese beetles are removed by the product. I also suspect that due to the dry mid-summer period that egg-hatch was delayed until late-August when the rains started again. If you applied Merit as per the label in May, then it was probably used up by then. I think it best to use Merit when the adults fly in late-June or July so it lasts through late-summer into fall.
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