Reducing Phosphorus Levels Cancel The title field is required!

1. Steffie Safrit

   

   0 posts
   
   10/20/2014 9:10 PM

   Our greens samples have shown phosphorus off the charts on bentgrass USGA sand based greens. Anyone have any past experience with reducing these levels? Humic Acids, Organic Acids, etc....

   
   
   
   
2. Larry Stowell

   

   0 posts
   
   10/22/2014 5:10 AM

   Do not apply additional P and soil levels will steadily drop. Here is an example decline of soil P on USGA greens mix over time without application of additional P. The soil ewas eventually depleated after five years starting at about 150 ppm Mehlich 3 P.
   
   http://www.paceturf.org/journal/role_of ... ass_greens