Nicky Schauder wrote:
I found this Dynamic Accumulator and nutrient list way back in 2013, from http://www.ars-grin.gov/duke/. Since downloading it, I've uploaded it on my own Google Drive because it's hard to find.
https://docs.google.com/spreadsheets/d/1t0K6IT1uNFWooY0jvHyy0tmoJj5kkD257FqdFbTZO1Q/edit?usp=sharing
It is from the work of the late Dr. Jim Duke who worked for the USDA at the time that this was released on their website