327 Ind. Admin. Code 6.1-6-3
Current through January 8, 2025
Authority: IC 13-14-8-7; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-3-1; IC 13-18-12-4
Affected: IC 13-11-2-77; IC 13-30-2-1
Sec. 3.
Agricultural lime substitute must be evenly applied at rates based on the adjusted lime rate as determined by Equation 4 as follows:
Equation 4:
Adjusted Lime Rate = RALR × FF × NF × DF
Where: RALR = Recommended agricultural lime rate derived from the soil analysis report for the application site.
FF = Fineness factor.
NF = Neutralizing factor.
DF = Depth factor.
Table 7 Fineness Factor
| Mesh Size | Percent 8 | Passing 20 | Mesh 60 | Size 100 | Fineness Factor (FF) |
| 100 | 100 | 100 | 100 | .60 | |
| 100 | 100 | 95 | 80 | .63 | |
| 100 | 95 | 70 | 60 | .76 | |
| 95 | 70 | 50 | 40 | 1.00 | |
| 85 | 60 | 40 | 30 | 1.19 | |
| 80 | 50 | 30 | 20 | 1.45 | |
| 80 | 45 | 20 | 10 | 1.77 | |
| 80 | 40 | 15 | 5 | 2.03 |
Table 8 Neutralizing Factor
| CCE* | Neutralizing Factor (NF) |
| 110-119 | .83 |
| 100-109 | .90 |
| 90-99 | 1.00 |
| 80-89 | 1.12 |
| 70-79 | 1.27 |
| 60-69 | 1.46 |
| 50-59 | 1.73 |
| 40-49 | 2.00 |
*CCE = Calcium Carbonate Equivalency
Table 9 Depth Factor
| Plowing Depth (Inches) | Depth Factor (DF) |
| 0-<=4 | .50 |
| >4-<=6 | .75 |
| >6-<=8 | 1.00 |
| >8-<=10 | 1.25 |
| >10-<=12 | 1.50 |
327 IAC 6.1-6-3