By Plant Life Products...
"Causes roots to grow thicker and faster. Creates tighter nodule spacing and increases overall Growth production.
Once roots have been established, apply prop-O-Gator @ 5ml (1 tsp) per litre of water. The second application should be done seven days later, then return to a regular fertilizer program."
Copper (Cu): 0.007
Iron (Fe): 0.1
Maganese (Mn): 0.009
Zinc (Zn): 0.009
5ml/L = 20ml/gal ---> approx. 120ppm @ 5.8 per gallon r.o. water]