A fertilizer must be deemed deficient if the analysis of any nutrient is below the guarantee by an amount exceeding the values in the following schedule, or if the overall index value of the fertilizer is below 98 percent.
Guarantee, Percent | Nitrogen (N) | Available Phosphate(P2o5) | Sol. Potash (K20) |
Investigational Allowance, Percent | |||
04 or less | 0.49 | 0.67 | 0.41 |
05 | 0.51 | 0.67 | 0.43 |
06 | 0.52 | 0.67 | 0.47 |
07 | 0.54 | 0.68 | 0.53 |
08 | 0.55 | 0.68 | 0.60 |
09 | 0.57 | 0.68 | 0.65 |
10 | 0.58 | 0.69 | 0.70 |
12 | 0.61 | 0.69 | 0.79 |
14 | 0.63 | 0.70 | 0.87 |
16 | 0.67 | 0.70 | 0.94 |
18 | 0.70 | 0.71 | 1.01 |
20 | 0.73 | 0.72 | 1.08 |
22 | 0.75 | 0.72 | 1.15 |
24 | 0.78 | 0.73 | 1.21 |
26 | 0.81 | 0.73 | 1.27 |
28 | 0.83 | 0.74 | 1.33 |
30 | 0.86 | 0.75 | 1.39 |
32 | 0.88 | 0.76 | 1.44 |
34 | 0.88 | 0.79 | 1.46 |
36 | 0.88 | 0.83 | 1.49 |
38 | 0.88 | 0.86 | 1.51 |
40 | 0.88 | 0.90 | 1.54 |
42 | 0.88 | 0.93 | 1.56 |
44 | 0.88 | 0.96 | 1.58 |
46 | 0.88 | 1.00 | 1.61 |
48 | 0.88 | 1.03 | 1.63 |
50 | 0.88 | 1.07 | 1.66 |
52 | 0.88 | 1.10 | 1.68 |
54 | 0.88 | 1.10 | 1.70 |
56 | 0.88 | 1.10 | 1.73 |
58 | 0.88 | 1.10 | 1.75 |
60 | 0.88 | 1.10 | 1.78 |
62 | 0.88 | 1.10 | 1.80 |
The investigational allowance for triple superphosphate, also know as calcium dihydrogen phosphate or monocalcium phosphate, is 1.53 percent.
For these investigational allowances to be applicable, the recommended AOAC International procedures for obtaining, preparing, and analyzing samples must be used.
N.D. Admin Code 7-15-01-01
General Authority: NDCC 19-20.1-12
Law Implemented: NDCC 19-20.1