* Equivalent units: 1.0 lb = 454 g = 16 oz; 1.0 oz = 28.38 g.
The equation for calculating the amount of fertilizer to mix in 100 gallons of water is shown below:
ppm of desired element ÷ percent of element × 0.75 = oz/100 gal.
Hardy DH, Tucker MR, Stokes CE. 2013. Crop fertilization based on North Carolina soil tests. Raleigh (NC): North Carolina Department of Agriculture and Consumer Services, Agronomic Division. Circular No. 1.
February 15, 2013
NCDA&CS Agronomic Services Division, Colleen M. Hudak-Wise, Ph.D., Director Mailing Address: 1040 Mail Service Center, Raleigh NC 27699-1040 Physical Address: 4300 Reedy Creek Road, Raleigh NC 27607-6465 Phone: (919) 733-2655; FAX: (919) 733-2837