Sorry. I used volatile meaning easily depleted. The last 13 years I read about 120 customer soil samples per year. They were from all over central Fl. These were 90% serviced lawns & 10% customers who were just starting applications. Round about average yearly. I promise less than 5 ever showed sufficient K. These customers admitted a recently applied application. Everyone else's showed almost no K available... even after 16 days testing after app of K. Just my experience. Alot of these customers used 9-2-24 religioy.
All samples were done at CLC LABS in Ohio.
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Last edited by turfmd101; 09-13-2012 at 12:55 PM.