Oregon Administrative Rules › Chapter 603 - DEPARTMENT OF AGRICULTURE › Division 59 - FERTILIZERS, AGRICULTURAL MINERALS, AND LIMES › Section 603-059-0070 - Investigational Allowances, Minimum Detection Limits

Current through Register Vol. 63, No. 7, July 1, 2024
(1) Investigational allowance means an
			 allowance for variations inherent in the taking, preparation and analysis of an
			 official sample. The following investigational allowances provide enforcement
			 consistency in determining deficiencies in products addressed in the
			 administration of ORS
			 633.311 to
			 633.479 and
			 633.994. Products will be deemed
			 deficient if the analysis is below the guarantee by an amount exceeding the
			 following values:
(a) Investigational
			 allowances for primary nutrients are as follows:
% Guarantee - N - P2O5 - K2O
4% or Less - 0.49 - 0.67 - 0.41;
5% - 0.51 - 0.67 - 0.43;
6% - 0.52 - 0.67 - 0.47;
7% - 0.54 - 0.68 - 0.53;
8% - 0.55 - 0.68 - 0.60;
9% - 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% - * - 0.79 - 1.46;
36% - * - 0.83 - 1.49;
38% - * - 0.86 - 1.51;
40% - * - 0.90 - 1.54;
42% - * - 0.93 - 1.56;
44% - * - 0.96 - 1.58;
46% - * - 1.00 - 1.46;
48% - * - 1.03 - 1.63;
50% - * - 1.07 - 1.66;
52% - * - 1.10 - 1.68;
54% - * - # - 1.70;
56% - * - # - 1.73;
58% - * - # - 1.75;
60% - * - # - 1.78;
62% - * - # - 1.80.
* For N guarantees above 32%, the investigational allowance
				shall be 0.88.
# For P2O5 guarantees above 52%, the investigational allowance
				shall be 1.10.
For K2O guarantees above 62%, the investigational allowance
				shall be 1.80.
For guarantees not listed, calculate the appropriate value by
				interpolation.
(b)
			 Investigational allowances for secondary nutrients and micronutrients are as
			 follows:
Element -- Investigational Allowance
Ca - 0.2 Unit + 5% of Guarantee;
Mg - 0.2 Unit + 5% of Guarantee;
S - 0.2 Unit + 5% of Guarantee;
B - 0.003 Unit + 15% of Guarantee;
Co - 0.0001 Unit + 30% of Guarantee;
Cl - 0.005 Unit + 10% of Guarantee;
Cu - 0.005 Unit + 10% of Guarantee;
Fe - 0.005 Unit + 10% of Guarantee;
Mn - 0.005 Unit + 10% of Guarantee;
Mo - 0.0001 Unit + 30% of Guarantee;
Na - 0.005 Unit + 10% of Guarantee;
Zn - 0.005 Unit + 10% of Guarantee.
"UNIT" is twenty (20) pounds of plant food or one percent (1%)
				of a ton
The maximum allowance when calculated in accordance to the
				above shall be 1 unit (1%).
(c) Investigational allowances for lime
			 products are as follows:
(A) When the Lime
			 Score is found to be more than 5% deficient from the stated Lime
			 Score.
(B) When the amount of
			 calcium carbonate, calcium oxide, magnesium carbonate or magnesium oxide
			 content is found to be more than 10% below the guarantee.
(d) Investigational allowances for
			 ingredients other than primary nutrients, secondary nutrients and
			 micronutrients are as follows:
(A) When the
			 amount of other ingredients is found to be more than 15% below the
			 guarantee.