2 Va. Admin. Code § 5-400-40
The term "Percentage," when used by symbol or word on a fertilizer label, shall represent only the amount of individual plant nutrients or other factors in relation to the total weight of the product.
§ 3.2-3601 of the Code of Virginia.
Derived from VR115-04-10 § 4, eff. June 25, 1986.