ID/Control of broadleaf in green height HOC Cancel The title field is required!

1. Jeremy Shay

   

   0 posts
   
   6/30/2012 10:06 AM

   Early front runners for the ID of this bugger are Carpet Burweed or Parsley Piert. It persists at HOCs below .400 and will even do well at .140. Early treatments of Drive or Battleship3(with Induce) have not shown any measurable control. Any help would be appreciated.
   
   [img">http://i301.photobucket.com/albums/nn50/jdub240/100_0412.jpg[/img">
   [img">http://i301.photobucket.com/albums/nn50/jdub240/100_0408.jpg[/img">
   [img">http://i301.photobucket.com/albums/nn50/jdub240/100_0407.jpg[/img">
   [img">http://i301.photobucket.com/albums/nn50/jdub240/100_0406.jpg[/img">

   
   
   
   
2. Rosenthal Gregg

   
   6/30/2012 12:06 PM

   If it is in small amounts I would stick to strong IPM and physically remove it be done with it! Or try spot touch with strong roundup mix with touch applicator carefully applied. Other strong herbicide mixes may still discolor you nice turf...Another one in the keep it simple methodology?
   
   Gregg

   
   
   
   
3. Kim Brock

   

   3 posts
   
   6/30/2012 4:06 PM

   Parsley Piert is on the QuickSilver label. Check out the Quick Silver label.

   
   
   
   
4. Patrick Reinhardt

   

   0 posts
   
   7/2/2012 9:07 AM

   Kim Brock said: Parsley Piert is on the QuickSilver label. Check out the Quick Silver label.

   
   
   Agreed. Quicksilver is great on more than just moss.

   
   
   
   
5. Steve Nelson

   

   0 posts
   
   7/2/2012 10:07 AM

   Jeremy,
   if you are out west then I believe what you're looking at is swinecress or a close relative like brass buttons or pinepple weed. We've had it here for about three years or so now and Pat Gross with the USGA S/west tells us it is an increasing problem in CA. I've got poa/bent greens in a mild climate and this stuff seems to germinate over a long period. Luckily it's limited to a few greens and just little spots. I've had good luck with a tube/sponge application of trimec bentgrass formula.

   
   
   
   
6. Baker Daniel

   
   7/2/2012 3:07 PM

   Not to add to the ID or control options but:
   
   Those are FANTASTIC diagnostic photos. I wish everyone would take a tip from you and give perspective as well as close up shots. Kudos
   
   Hope you get it whipped

   
   
   
   
7. Jeremy Shay

   

   0 posts
   
   7/3/2012 11:07 AM

   Thanks for the help thus far. Over the weekend I did see a small amount of control(leaf burn) from the 2,4-D chemical. However, much like Poa; the plants immediately elongated stems and flowered. Pretty adaptive!!! We too have Bent/Poa greens in the desert southwest, and have been seeing this for about three years. It seems to spread both vegetatively and through seed. Only a handful of greens on the course have the weeds, and we have been successfully plugging/picking that out. However, its our practice facility that has the biggest population; and because of 'first impressions' at a resort facility... I would rather not go down the dauber Round-up road just yet. Here's a pic of the recent burn, and also one promoting label adherence.
   [img">http://i301.photobucket.com/albums/nn50/jdub240/2012-07-03_08-22-55_159.jpg[/img">
   
   [img">http://i301.photobucket.com/albums/nn50/jdub240/ouhrgnew.jpg[/img">
   
   [img">http://i301.photobucket.com/albums/nn50/jdub240/2012-07-03_08-22-37_979.jpg[/img">

   
   
   
   
8. Dan Gho

   

   0 posts
   
   7/3/2012 4:07 PM

   When I started at my current course we where covered with this weed. Staff was pulling buckets of it out of the greens, only to leave bare areas that needed to be cupped out or reseeded. Used Speedzone on the collars and the tees, and low doses of lontrel with sponge applicators and very carefully applied backpack applications on the greens. Worked well. We are now on a quicksilver program and keeps it in check, along with moss. We have Poa/bent greens.

   
   
   
   
9. Lee Wagner

   

   0 posts
   
   7/8/2012 6:07 PM

   Jeremy- I am in west Texas and have a lot of this weed in bent greens. It is a perennial. My local biologist thinks it is spiny yellow aster. We will only know for sure if somebody takes the time to grow it out. Trimec in the fall did not touch it. Trimec in the spring smoked it. Took about 3 weeks to really give control. Recovery time on Dominant Plus bent has been slow.
   
   Lee Wagner
   Nueva Vista Golf Club
   Midland TX

   
   
   
   
10. Andy Jorgensen

    

    1 posts
    
    7/9/2012 5:07 PM

    Swinecress. Had a ton of that weed in 419 fairways in Atlanta. Sprayed 3-way on it and it was smoked. Stuff stinks when crushed or mowed. For you, I'd look at Trimec Bent, half rates, two weeks apart and continue until gone. That's the best suggestion this southern guy can give you.

    
    
    
    
11. Ronald Conard

    

    4 posts
    
    7/9/2012 11:07 PM

    Have you positively i.d.ed it yet? I've seen six or seven guesses on this thread. What is it? I'm guessing horry buttwort.

    
    
    
    
12. Robert Crockett

    

    4 posts
    
    7/10/2012 8:07 PM

    swinecress
    Coronopus didymus http://www.preen.com/weed/23054/1358/sw ... height=545
    Andy is 100% correct.......Quicksilver or Tri-mec bentgrass.......Do you pre emerge?

    
    
    
    
13. Steve Nelson

    

    0 posts
    
    7/11/2012 7:07 AM

    Ronald Conard, CGCS said: What is it? I'm guessing horry buttwort.

    
    
    I think I had horry buttwort once before.... but it wasn't on my greens.
    
    PS- I agree with the others- those were great photos that helped Jeremy get some helpful suggestions. Please no similar pics of the buttwort though.