Goosegrass pre-emergent use on bentgrass greens in transition zone Cancel The title field is required!

1. Melvin Waldron

   

   43 posts
   
   9/5/2020 1:09 PM

   Just trying to find out what people are using for a pre-emergent for goose grass issues on bentgrass greens, mainly in the transition zone.
   
   Also anyone see differences in pre-emergent effectiveness between USGA sand based greens and push up greens?  
   
   Thanks!
   
   Mel
   
   

   
   Melvin H. Waldron III, CGCS, Horton Smith Golf Course, City of Springfield/Greene County MO
   
   
2. Kenneth Ingram

   

   18 posts
   
   9/7/2020 1:09 PM in reply to Melvin Waldron

   Still got to be that Anderson's Goose/Crab product doesn't it Mel. Kenneth Ingram, UMD

   
   
   
   

   Last modified on 08 Sep 2020 16:09 by Kenneth Ingram
3. William Murphy

   

   8 posts
   
   9/8/2020 5:09 AM in reply to Melvin Waldron

   We use the Andersons 0-0-20 with Dithiopyr but here is the label for the 10-3-10 we used to use.  
   
   
   https://cdn.greenbook.net/18-31-48-25-06-2019-L96934_Andersons_Golf_Products_Fertilizer_10-3-10_with_Dithiopyr_Turf_Herbicide.pdf

   
   
   
   
4. William Murphy

   

   8 posts
   
   9/8/2020 11:09 AM in reply to Melvin Waldron

   Additional information:
   Penncross push-up greens with poor drainage in the transition zone (Northeast Tennessee). As with any pre-emerge, when you apply it is better if you can control the water.  You do not want to apply when you may get a heavy rain that may lead to run-off or puddling.  
   
   We have used this products for years and get very good control with little/no turf injury.  
   

   
   
   
   
5. Melvin Waldron

   

   43 posts
   
   9/13/2020 10:09 AM

   Thanks all,
   
   Kenneth, I would tend to agree, we have used Goose/Crab the last two seasons, this season being great for control.  We followed label rates and recommendations, and so no issues.  I know another course locally got bite by it, 2nd time in three years, (they went back to dithiopyr and had some break through).  There is now some hesitation in allowing us to use it going forward.  
   
   We have used prior the Anderson's 0-0-20 w/dithiopyr .164% for years with mixed results, never complete control, but some of that I blamed on application timing?  We did use the south rates, 3.5 lbs/1000 with split apps 6 weeks apart, (or that was the goal).  In 2017 we went with the 0-0-5 w/.103% dithiopyr, the first year doing 3 applications, 3 weeks apart (6 weeks from the first to the last), at the light rate, 2.8 lbs/1000, for a total of 8.4 lbs/1000 (which is the label rate for transition zone, non greens, (greens rate is 5.5 lbs.) second season (2018) we bumped up the first application to 4 lbs./1000, and then 2.8 lbs. for the second and third, (total of 9.6 lbs/1000).  For both of these applications we continued to see plenty of break through of goose.  We also applied that year by trial basis, the Goose/Crab by splitting our practice green and also did our 10th green which has always been our worst goose green, and saw great improvement over our 0-0-5 treatment.  So that is why we went with the Goose/Crab.  We made our applications this year on 4/21 and 5/6, in 2019 we made them on 4/24 and 5/15.  No damage.  I did have a couple of other people tell me they saw damage this year also.  I have to go back and check with them their dates.
   
   I did ask the question about USGA vs soil greens, we have 4 soil greens that don't get the amount of goose our sand greens get, and I also know one of our other courses have used the 0-0-5 w/dithiopyr exclusively for years and while they get some goose, it is not as heavy as we see in our sand greens.  
   Thanks everyone for their input.
   
   Mel

   
   Melvin H. Waldron III, CGCS, Horton Smith Golf Course, City of Springfield/Greene County MO