Investigational Allowances

(1) (a) A commercial fertilizer shall be deemed deficient if the analysis of any nutrient is below the guarantee by an amount exceeding the values in the following schedule* Guaranteed percent Nitrogen percent Available Phosphoric acid, percent Potash percent 04 or less 0.49 0.67 0.41 0.51 0.67 0.43 0.52 0.67 0.47 0.54 0.68 0.53 0.55 0.68 0.60 0.57 0.68 0.65 0.58 0.69 0.70 0.61 0.69 0.79 0.63 0.70 0.87 0.67 0.70 0.94 0.70 0.71 1.01 0.73 0.72 1.08 0.75 0.72 1.15 0.78 0.73 1.21 0.81 0.73 1.27 0.83 0.74 1.33 0.86 0.75 1.39 32 or more 0.88 0.76 1.44 For guarantees not listed, calculate the appropriate value by interpolation. (b) Secondary and minor elements shall be deemed deficient if any element is below the guarantee by an amount exceeding the values in the following schedule: ELEMENTS ALLOWABLE DEFICIENCY Calcium ) 0.2 unit +5% of guarantee Magnesium ) 0.2 unit + 5% of guarantee COMMERCIAL FERTILIZER CHAPTER 0080-05-10 Sulfur ) 0.2 unit + 5% of guarantee Boron ) 0.003 unit + 15% of guarantee Cobalt ) 0.0001 unit + 30% of guarantee Molybdenum ) 0.0001 + 30% of guarantee Chlorine ) 0.005 + 10% of guarantee Copper ) 0.005 unit + 10% of guarantee Iron ) 0.005 unit + 10% of guarantee Manganese ) 0.005 unit + 10% of guarantee Sodium ) 0.005 unit + 10% of guarantee Zinc ) 0.005 unit + 10% of guarantee *For these investigational allowances to be applicable, the recommended AOAC procedures for obtaining samples, preparation and analysis must be used, unless a proven variation of such procedures is acceptable to the Commissioner. AOAC Procedures are described in Official Methods qf Analysis of the Association of Official Analytical Chemists. In evaluating replicate data, Table 19, page 935, Journal of the Association of Official Analytical Chemists, Volume 49, No. 5, October, 1966, should be followed. The maximum allowance when calculated in accordance to the above shall be 1 unit (1%).