6.1 The methods
of sampling for fertilizers, soil conditioners and plant amendments shall be
those set forth in the 20th Edition of the Official
Methods of Analysis of the Association of Analytical Communities (AOAC)
International, or such other methods adopted by the Commissioner from
authoritative sources that the Commissioner deems reliable including but not
limited to Colorado State University. This Rule incorporates by reference the
AOAC methods of analysis, 20th edition. This Rule does not adopt any later
amendments to, or editions of, the AOAC methods of analysis. A copy of the
20th edition of the AOAC shall be kept on file at
the Department of Agriculture, located at 305 Interlocken Parkway, Broomfield
Colorado 80021, and shall be open to public inspection, and available for
copying, during normal business hours. A copy of the official publication shall
also be kept at AOAC International, located at 2275 Research Blvd., suite 300,
Rockville Maryland 20850 and is available online at: AOAC.org. This, and any
other material that is incorporated by reference, may be examined at any state
publications depository library.
6.2 The methods for sampling and analysis of
compost shall be those specified in Test Methods for the Examination of
Composting and Compost, U. S. Composting Council Research and Education
Foundation (CCREF), and United States Department of Agriculture (USDA) (TMECC,
2002) or such other methods adopted by the Commissioner from authoritative
sources that the Commissioner deems reliable, including but not limited to
Colorado State University. The Test Methods for the Examination of Composting
and Compost, U.S. Composting Council Research and Education Foundation (CCREF),
and United States Department of Agriculture (USDA) (TMECC, 2002) is herein
incorporated by reference. It does not include later amendments or editions of
the publication. A copy of the 2002 edition of the TMECC shall be kept on file
at the Department of Agriculture, located at 305 Interlocken Parkway,
Broomfield Colorado 80021, and shall be open to public inspection, and
available for copying, during normal business hours. A copy of the official
publication shall also be kept with the U.S. Composting Council, located at
1053 East Whitaker Mill Road, Suite 115, Raleigh North Carolina 27604, and is
available online at: compostingcouncil.org. This, and any other material that
is incorporated by reference, may be examined at any state publications
depository library.
6.3
Investigational Allowances
6.3.1 A commercial
fertilizer shall be deemed deficient if the analysis of any nutrient is below
the guarantee percent by an amount exceeding the applicable value specified in
the following schedule, or if the index value of the fertilizer is below 98%:
|
Guarantee percent
|
Nitrogen percent
|
Available Phosphate
percent
|
Soluble Potash
percent
|
|
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 or more
|
0.88
|
0.76
|
1.44
|
For guarantees not listed, calculate the appropriate value by
Interpolation.
6.3.2 Other
elements shall be deemed deficient if any element is below the guarantee by an
amount exceeding the applicable value specified in the following schedule:
|
Element
|
GUARANTEE
|
ALLOWABLE
DEFICIENCY
|
|
Calcium and Sulfur
|
1% and up
|
0.2 units + 5% of guarantee
|
|
Magnesium
|
0.5% and up
|
0.2 units + 5% of guarantee
|
|
Boron
|
.02% to 5%
|
.003 units + 15% of guarantee
|
|
5.0% and up
|
Potash Schedule 6.3 (a)
|
|
Cobalt and Molybdenum
|
.0005% to 1.0%
|
.0001 units + 30% of guarantee
|
|
1.0% to 4.0%
|
.2 units + 10% of guarantee
|
|
4.1% and up
|
Potash Schedule 6.3 (a)
|
|
Chlorine, Iron & Sodium
|
0.1% to 4.0%
|
.005 units + 10% of guarantee
|
|
4.1% and up
|
Potash Schedule 6.3 (a)
|
|
Copper, Manganese, & Zinc
|
.05% to 4.0%
|
.005 units + 10% of guarantee
|
|
4.1% and up
|
Potash Schedule 6.3 (a)
|
6.3.3
The above tolerances listed in 6.3.1. and 6.3.2 are for single samples run in
duplicate.
Notes
8 CCR 1202-4, pt. 6
40
CR 05, March 10, 2017, effective
3/30/2017
40
CR 23, December 10, 2017, effective
12/30/2017
43
CR 22, November 25, 2020, effective
12/15/2020
45
CR 13, July 10, 2022, effective
7/30/2022
