Ind. Admin. Code tit. 327, r. 6.1-6-3 – Agricultural lime substitute application

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

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
	Percent	Passing	Mesh	Size	Fineness Factor (FF)
Mesh Size	8	20	60	100
	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

(Water Pollution Control Division; 327 IAC 6.1-6-3; filed May 15, 1998, 10:20 a.m.: 21 IR 3804; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; filed Jul 7, 2003, 4:25 p.m.: 26 IR 3621; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR- 327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR-327130176BFA; readopted filed Jun 14, 2019, 1:59 p.m.: 20190710-IR-327190246BFA; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR-327230810RFA)