The commercial values used in assessing penalties for plant nutrient deficiencies are determined by the annualized average market prices published by the Green Markets Publication (effective 9/17/07), which is hereby incorporated by reference. Commercial Values not provided in Industry Publications will be established through survey approved by the Fertilizer Technical Council. Copies may be obtained from the Green Markets, 1010 Wayne Avenue, Suite 1400, Silver Spring, MD 20910 USA. This rule shall be reviewed annually.
    (1) PRIMARY PLANT NUTRIENTS.

Guaranteed
Commercial Values

as
(Per unit*)
Total Nitrogen
N
$11.26
Nitrate Nitrogen
N
9.73
Ammoniacal Nitrogen
N
9.60
Water Soluble or Urea Nitrogen
N
8.10
Slow Release Nitrogen

(from other SRN sources)
N
20.66
Water Insoluble Nitrogen
N
20.32
Available Phosphorus
P2O5
9.87
Slow Release Phosphate
P2O5
19.10
Potassium (from Muriate)
K2O
4.96
Slow Release Potassium
K2O
16.28
Potassium (from any source other than

Muriate or a combination of sources)
K2O
9.17
    (2) SECONDARY PLANT NUTRIENTS.

Guaranteed
Commercial Values

as
(per unit*)
Total and Water Soluble

Magnesium (from any source)
Mg
$11.54
Manganese (from sulfate)
Mn
18.29
Manganese (from sucrate)
Mn
16.94
Manganese (from chloride)
Mn
6.10
Manganese (from oxide)
Mn
11.47
Manganese (from chelate in group 1**)
Mn
359.85
Manganese (from chelate in group 2**)
Mn
220.00
Copper (from sulfate)
Cu
79.34
Copper (from chloride)
Cu
22.15
Copper (from oxide)
Cu
45.00
Copper (from chelate in group 1**)
Cu
387.63
Copper (from chelate in group 2**)
Cu
289.95
Zinc (from sulfate)
Zn
33.59
Zinc (from sucrate)
Zn
16.17
Zinc (from chloride)
Zn
18.45
Zinc (from oxide)
Zn
30.45
Zinc (from chelate in group 1**)
Zn
325.00
Zinc (from chelate in group 2**)
Zn
180.00
Iron (from sulfate)
Fe
15.83
Iron (from sucrate)
Fe
8.83
Iron (from humate)
Fe
5.41
Iron (from oxide)
Fe
4.80
Iron (from chelate in group 1**)
Fe
324.41
Iron (from chelate in group 2**)
Fe
87.55
Aluminum
Al
14.42
Sulfur (free)
S
3.39
Sulfur (combined)
S
3.73
Boron
B
42.00
Molybdenum
Mo
818.53
Cobalt
Co
89.90
Calcium (from any source)
Ca
.79
    (3) Dolomite and Limestone (when sold as material).
Magnesium
MgCO3
.72
Calcium
CaCO3
.50
    (4) Calcium sulfate (land plaster, gypsum) (when sold as material).
Calcium
CaSO4
.52
*A “”Unit”” of plant nutrient is one percent (by weight) of a ton or 20 pounds.
**Chelates in “”group 1″” have aminopolycarboxylic acids, such as EDTA, HEDTA, DTPA and NTA, or related compounds as chelating agents. Chelates in “”group 2″” have chelating agents other than those in group 1.
Rulemaking Authority Florida Statutes § 570.07(23), 576.181(2) FS. Law Implemented 576.051(2), (3), (7), 576.061, 576.071, 576.181 FS. History-New 1-23-67, Amended 10-22-68, 11-20-69, 10-22-70, 3-9-74, 6-28-74, 10-25-74, 7-6-76, 7-26-77, 7-22-79, 4-23-80, 10-27-80, 10-18-81, 2-16-84, 12-2-85, Formerly 5E-1.16, Amended 11-16-86, 10-8-87, 9-26-88, 11-19-89, 3-28-91, 2-25-92, 8-3-93, 7-12-94, 10-25-98, 3-20-00, 10-9-01, 2-9-04, 7-26-06, 6-5-08.