You have me. CNR =Critical Nuttrient Range or Carbon Nitrogen Ratio. CRF Controlled Release Fertilizer.
CSRN= Controlled Slow Release Nitrogen?? Urea Formaldehyde as form of nitrogen?? but I am Guessing.
HWIN ?? I am still thinking on. Oops Hot Water Insoluble Nitrogen. I am used to seeing CWIN = Cold Water Insoluble Nitrogen. U or UF is the Nitrogen form
it is one thing to do a off label applications. It is total stupidity to post it on the world wide web and expect people to approve.
You can lead a Donkey to water but you can't make the Jackass Drink