*** Taxonomy Characterization Data ***

Pedon ID: 77MT087380

( Rosebud, Montana )

Print Date: Feb 16 2025 5:42AM

Sampled as on Jul 1, 1977:	Sumatra ; Fine-silty, mixed, nonacid, frigid Ustic Torriorthent
Revised to correlated:	Sumatra ; Fine-silty, mixed, superactive, nonacid, frigid Ustic Torriorthents

				United States Department of Agriculture
SSL	-	Project	CP83MT220   ROSEBUD COUNTY	Natural Resources Conservation Service
	-	Site ID	S1977MT087380   Lat: 46° 30' 28.00" north  Long: 106° 50' 44.01" west  MLRA: 58A	National Soil Survey Center
	-	Pedon No.	83P0723	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

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Taxonomy Tier 1

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

Fine

CaCO3

1500

.1-75

Bulk

Cole

Vol

Resist

Clay

Clay

Clay

kPa

Clay

mm

Den

Whole

% of

Min

Depth

<.002

<.0002

<.002

/Clay

Est

Frac

33 kPa

Soil

Whole

%

Layer

(cm)

Horz

Prep

(---------% of <2 mm-------)

(-------- % --------)

g cm-3

cm cm-1

3A1a1a

3A1a1a

8D1

83P03578

0-5

A

S

28.4

1.1

0.30

2

tr

83P03579

5-22

By

S

32.2

0.32

1

--

83P03580

22-73

BC

S

31.1

0.40

2

--

83P03581

73-152

C

S

29.4

0.42

8

tr

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Taxonomy Tier 2				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-
				pH	pH	Org	Tot	Al+½ Fe		CO3 as	(--- Base Sat ---)		NZ	ECEC	CEC7	ECEC	Al
	Depth			H2O	NaF	C	C	Oxal	ODOE	CaCO3	NH4	Bases	P Ret	cmol(+)	/Clay	/Clay	Sat	E C	ESP
Layer	(cm)	Horz	Prep			(------------------------------------------ % --------------------------------------------)								kg -1			%	dS m-1	%
				4C1a2a		6A1c				6E1g	5C1	5C3			8D1			8A3a	5D2
83P03578	0-5	A	S	7.9		0.69				11	100*	100			0.42			3.30	3
83P03579	5-22	By	S	8.0		0.54				tr	100*	100			0.37			7.31	12
83P03580	22-73	BC	S	8.2		0.41				tr	100*	100			0.42			17.49	48
83P03581	73-152	C	S	8.3		0.39				tr	100*	100			0.41			23.40	34

^*Extractable Ca may contain Ca from calcium carbonate or gypsum.

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Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.42	(NA)
Clay, carbonate free, Weighted Average	30	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	4	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	30	% wt
Weighted averages based on control section: 25-100 cm