After paying $30.00 a pound for humic acids for my soil, I recently purchased some for $16.00 for 32 pounds. It seems the same when mixed with water. I did some research using an old tag on one bag, and found a mine close to me which apparently supplies the stuff to an awful lot of nurseries in the Southwest, where you can buy the material by the ton.
My question is this, does anyone have any long term experience with this material and alkaline soils?
Next, how much of this material is too much for alkaline soils at 8.0 PH?