pgr apps Cancel The title field is required!

1. Melvin Waldron

   

   43 posts
   
   8/27/2012 9:08 AM

   Red,
   greens height only, cool season only, mostly bent, there was some discussion on the poa if I remember early in the piece, but the research was conducted first on L-93, then when it was replicated the second and third seasons and they had moved it to another green that was penncross.
   
   I read it last night before bed, so the early part of the article is a little fuzzy and I forgot to bring the magazine to work so I can't double check without going back to the GCSAA website.
   
   Mel

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

   

   0 posts
   
   8/27/2012 10:08 AM

   Has anyone seen damage on bluegrass from following the GDD model on bentgrass greens? When we spray greens (about every 200-250 GDD @ .125 rate), we hit a little of the bluegrass collar/approach as the spray booms are turned on and off, ensuring coverage on the green surface. Unfortunately, we are now seeing little "triangles" of decline in the bluegrass green surrounds. We suspect the bluegrass simply can't handle the primo app frequency.
   
   -Bob

   
   
   
   
3. Larry Allan

   

   0 posts
   
   8/27/2012 10:08 AM

   I've seen the same but since I tank mix so many different things, I have never been able to determine what causes this

   
   
   
   
4. Melvin Waldron

   

   43 posts
   
   8/27/2012 11:08 AM

   Bob Begey said: Has anyone seen damage on bluegrass from following the GDD model on bentgrass greens? When we spray greens (about every 200-250 GDD @ .125 rate), we hit a little of the bluegrass collar/approach as the spray booms are turned on and off, ensuring coverage on the green surface. Unfortunately, we are now seeing little "triangles" of decline in the bluegrass green surrounds. We suspect the bluegrass simply can't handle the primo app frequency.
   
   -Bob

   
   
   I seem to remember something in the article as it related to Kentucky Bluegrass sports fields, but off the top of my head I can't remember all the details, something about the frequency if I remember correctly.
   
   Mel

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