Missouri Code of State Regulations
Title 6 - DEPARTMENT OF HIGHER EDUCATION AND WORKFORCE DEVELOPMENT
Division 250 - University of Missouri
Chapter 10 - Administration of Missouri Agricultural Liming Materials Act
Section 6 CSR 250-10.020 - Agricultural Liming Materials Standards
Current through Register Vol. 49, No. 6, March 15, 2024
PURPOSE: The purpose of this rule is to set forth standards and guidelines as are necessary to provide for the efficient enforcement of the provisions of the Missouri Agricultural Liming Materials Act.
(1) Agricultural liming materials and agricultural liming materials mixtures, as defined in paragraphs (1)-(4) of section 266.505, RSMo (1986), by virtue of their physical and chemical characteristics, in part, must be treated separately under the Missouri Agricultural Liming Materials Law. Each delivery shall be guaranteed as to the effective neutralizing material and the effective magnesium, as derived by 6 CSR 250-10.020(3)-(5).
(2) All dry agricultural liming materials offered for sale shall have a minimum calcium carbonate equivalent of sixty-five percent (65%) and shall meet the minimum specifications for fineness as set forth in section 266.505(1), RSMo (1986). A permit to sell, and certification of effective neutralizing material and certification of effective magnesium, may be withdrawn for materials which fail to meet minimum specifications of this section.
(3) The pounds of effective neutralizing material (ENM) in one (1) ton of agricultural liming material shall be based on the calcium carbonate equivalent (CCE) of the agricultural liming materials as delivered for sale and the fineness factor calculated from the percent of materials passing a United States standard sieve size number eight (8) and remaining on a United States standard sieve size number forty (40), the percent of materials passing a United States standard sieve size number forty (40) and remaining on a United States standard sieve size number sixty (60) and the percent of materials passing a United States standards sieve sixty (60). The final result of calculations shall be rounded to the nearest whole number, which will be the pounds of effective neutralizing material per ton.
United States Standard Sieve Size No. Ranges | Efficiency Percentages |
% Remaining on 8 | 0% |
% Passing 8 and Remaining on 40 | 25 |
% Passing 40 and Remaining on 60 | 60 |
% Passing 60 | 100 |
The fineness factor is calculated to allow for variations in fineness of materials using the following formula:
Fineness Factor= (% of materials passing United States No. 8 and remaining on 40 x 0.25)
+ (% of materials passing United States No. 40 and remaining on 60 x 6.060)
+ (% of materials passing United States No. 60 x 1.00)
Calculations to allow for variations in calcium carbonate equivalent and fineness shall be made by using the following formula:
ENM =% CCE/100 x Fineness Factor/100 x 800
(4) The pounds of effective magnesium (E.Mg.) in one (1) ton of agricultural liming material which meets the specifications of 6 CSR 250-10.020(2) shall be based on the magnesium content of the agricultural liming materials delivered for sale and the fineness factor as determined in 6 CSR 250-10.020(3). Calculations to allow for variations in magnesium content and fineness shall be made using the following formula: E. Mg. =% Mg./100 x Fineness Factor/100 x 2000
The final result of calculations shall be rounded to the nearest whole number, which will be the pounds of effective magnesium per ton.
(5) The pounds per ton of ENM and the pounds per ton of E.Mg. for agricultural liming materials mixtures shall be based on the calcium carbonate equivalent and the magnesium content of the agricultural liming material mixture as delivered for sale and on the fineness factor of the dry agricultural liming material used in the mixture as determined in 6 CSR 250-10.020(3) and (4).
(6) All samples of agricultural liming materials taken for analyses shall be taken in accordance with the following methods and procedures:
Clear away crusted material with the sharpshooter until a full spade depth of loose, uncaked material can be removed. One (1) or (2) full spades should then be removed.
Then cut a smooth face at a sufficient angle from vertical so that a one inch (1") slice of agricultural lime may be removed intact in the spade. Everything except a one inch by the inch (1" x 1") section from the top to the bottom of the space should be removed. (The top opening of a stream sample turned upside down may be used to cover this central section while the excess at each side is removed.) This one inch by one inch (1" x 1") central core should then be put in plastic bag. This procedure should be repeated for each sampling point until ten (10) cores are composited to make up an official sample. After the crust is removed, it may be possible to probe some of the sampling locations. A combination of ten (10) "D" tube cores and spade cores may be composited together to make up the official sample.
The secretary of state has determined that the publication of this rule in its entirety would be unduly cumbersome or expensive. The entire text of the rule has been filed with the secretary of state and is summarized here by the agency adopting it. The entire text of the rule may be found at the headquarters of the agency and is available to any interested person at a cost established by state law.