A commercial fertilizer containing two or more of the major plant food nutrients, nitrogen, available phosphoric acid and potash shall be deemed to be deficient when any ingredient falls ten percentum (10%) below the guarantee. In such cases, the sum of the commercial value deficiencies calculated for each deficient nutrient, using values fixed by the State Chemist, shall be the basis for the penalty.
2 Miss. Code. R. 1-3-03-106.02