Reference soil Indonesia 12: Acrisol

ID012

Acrisols occur dominantly in the wetter parts of the tropics and subtropics and the warm temperate regions in relatively young landscapes.

Characteristics

Soils having an argic horizon (a subsurface horizon with distinct higher clay content than the overlying horizon), which has a cation exchange capacity of less than 24 cmolc per kg in some part, either starting within 100 cm from the soil surface, or within 200 cm from the soil surface if the argic horizon is overlain by loamy sand or coarser textures throughout. They have a base saturation (total amount of Ca, Mg, K and Na with respect to the cation exchange capacity) of less than 50 percent in the major part between 25 and 100 cm from the soil surface

Distribution of Acrisols (rough estimation supplied by soilgrids)

Reference soil ID012: Acrisols

LOCATION: Teluk Manuk, North Lampung, Lampung Province, South Sumatra. POSITION OF SITE: On the highest point of the plain. CLIMATE: Nearest major climate station is Palembang (208 km N, 10 m.a.s.l.). ADDITIONAL NOTES ON PROFILE DESCRIPTION: Ap - also many medium roots; B1 - also many fine roots; B31 - multicoloured : 10YR6/6, 10YR5/8, 2.5YR4/6, 10YR6/8, N7/1;

Classification

WRB 2006

Cutanic- Acrisol (Alumic Clayic)

11-130 cm

argic horizon

11-130 cm

argic horizon

FAO-UNESCO-ISRIC 1988

FAO-UNESCO-ISRIC 1974

Xanthi-Haplic Acrisol

Ferric Acrisol

0-36 cm	ochric A horizon
11-130 cm	argic B horizon

0-36 cm	ochric A horizon
11-130 cm	argillic B horizon
-	ferric

Other classification

USDA-NRCS (1999)	Typic Hapludox
USDA-SCS (1975)	Typic Paleudult udic very fine kaolinitic isohyperthermic

Physical characteristics

Particle size distribution

Depth (cm)	Gravel % v/v	very coarse sand % w/w	coarse sand % w/w	medium sand % w/w	fine sand % w/w	very fine sand % w/w	Total sand % w/w	coarse silt % w/w	fine silt % w/w	Total silt % w/w	Clay % w/w
11-36	-	0.2	0.9	1.7	3.7	2.6	9.1	3.0	8.2	11.2	79.9
36-52	-	0.2	0.8	1.4	3.1	2.0	7.5	1.4	5.9	7.3	85.3
52-75	-	0.5	0.8	1.4	2.9	2.0	7.6	1.9	6.6	8.5	83.8
75-104	-	0.5	0.7	0.9	2.2	1.5	5.8	2.6	6.3	8.9	85.4
104-130	-	0.7	0.5	0.6	1.4	1.0	4.2	4.4	6.9	11.3	84.6
130-250	-	0.1	0.2	0.3	0.9	1.0	2.5	3.9	12.6	16.5	81.2
0-11	-	0.5	1.4	2.4	5.0	3.4	12.6	3.6	7.8	16.2	76

Water retention characteristics

Depth (cm)	Bulk density kg/dm³	Spec. Surf. Area m²/g	COLE cm/cm	Water disp. clay %	Clay % w/w
11-36	-	-	-	1.9	79.9
36-52	-	-	-	0.0	85.3
52-75	-	-	-	0.0	83.8
75-104	-	-	-	0.0	85.4
104-130	-	-	-	0.0	84.6
130-250	-	-	-	0.0	81.2
0-11	-	-	-	25.3	76

Chemical data

Depth (cm)	pH H2O	pHKCl	EC 1: 2.5 dS/m	CaCO3 % w/w	C % w/w	N %	C / N	Exch. Acid cmol(c)/kg	Exch. Al cmol(c)/kg	Ca cmol(c)/kg	Mg cmol(c)/kg	K cmol(c)/kg	Na cmol(c)/kg	Sum Cations cmol(c)/kg
11-36	4.9	4.0	0.05	-	0.92	0.05	18	1.8	1.3	0.6	0.3	0.1	0.0	1.0
36-52	4.6	4.0	0.02	-	0.62	0.07	9	2.0	1.6	0.2	0.1	0.1	0.0	0.4
52-75	4.6	4.0	0.02	-	0.62	0.07	9	2.0	1.6	0.2	0.1	0.1	0.0	0.4
75-104	4.7	4.0	0.01	-	0.40	-	-	2.0	1.8	0.2	0.1	0.1	0.0	0.4
104-130	4.8	4.0	0.01	-	0.26	-	-	2.0	1.8	0.0	0.1	0.1	0.0	0.2
130-250	5.0	4.0	0.01	-	0.15	-	-	2.3	2.0	0.2	0.1	0.1	0.0	0.4
0-11	5.3	4.2	0.6	-	2.35	0.22	11	1.2	0.7	2.3	0.7	0.3	0.0	3.3

Depth (cm)	Base sat. %	CEC soil cmol(c)/kg	CEC clay cmol(c)/kg	CEC org cmol(c)/kg	ECEC cmol(c)/kg	Al sat. %	ESP %
11-36	11	9.2	12	3.2	-	14	0
36-52	5	8.6	10	2.2	-	19	0
52-75	5	8.3	10	2.2	-	19	0
75-104	5	8.5	10	1.4	-	21	0
104-130	3	6.8	8	0.9	-	26	0
130-250	7	6.1	8	0.5	-	33	0
0-11	24	13.7	19	8.2	-	5	0

Depth (cm)	pH NaF	P Retention %	ODOE	Al o % w/w	Si o % w/w	Fe d % w/w	Al d % w/w	Fe p % w/w	Al p % w/w	C p % w/w	Fe o % w/w
11-36	-	-	-	0.25	0.04	2.73	0.53	0.11	0.11	-	0.21
36-52	-	-	-	0.26	0.04	2.63	0.49	0.09	0.08	-	0.12
52-75	-	-	-	0.25	0.03	2.74	0.48	0.05	0.09	-	0.09
75-104	-	-	-	0.21	0.04	2.91	0.47	0.02	0.07	-	0.06
104-130	-	-	-	0.20	0.02	3.51	0.46	0.01	0.06	-	0.05
130-250	-	-	-	0.20	0.02	3.56	0.40	0.00	0.06	-	0.04
0-11	-	-	-	0.28	0.03	2.14	0.52	0.32	0.13	-	0.34

Clay mineralogy

Depth (cm)	Chlorite	Feldspar	Gibbsite	Goethite	Halloysite	Hematite	Kaolinite	Mica / illite	Mixed-layer	Quartz	Smec	Vermiculite
11-36	-	-	-	medium	-	-	very large	-	small	-	-	-
36-52	-	-	-	medium	-	-	very large	-	very small	-	-	-
52-75	-	-	-	medium	-	-	very large	-	very small	-	-	-
75-104	-	-	-	medium	-	-	very large	-	very small	-	-	-
104-130	-	-	-	medium	-	-	very large	-	very small	-	-	-
130-250	-	-	-	medium	-	-	very large	-	very small	-	-	-
0-11	-	-	-	medium	-	-	very large	-	small	-	-	-

Profile description

Bw 11-36 cm	dark yellowish brown (10YR 4/4, moist)clay,weak fine subangular blocky,friable slightly sticky slightly plastic,many very fine fine pores and few pores,clear smooth boundary to,
Bt1 36-52 cm	yellowish brown (10YR 5/6, moist)clay,weak fine subangular blocky,friable sticky plastic,patchy thin clay cutans,many very fine fine pores and few pores,gradual smooth boundary to,
Bt2 52-75 cm	yellowish brown (10YR 5/6, moist)clay,weak fine subangular blocky,friable sticky plastic,few medium faint diffuse mottles (2.5YR 4/6),patchy thin clay cutans,many very fine fine pores and few pores,clear wavy boundary to,
Bt3 75-104 cm	yellowish brown (10YR 5/6, moist)clay,weak fine subangular blocky,friable sticky plastic,many medium faint clear mottles (2.5YR 4/6),patchy thin clay cutans,many very fine fine pores and few pores,gradual smooth boundary to,
Bt4 104-130 cm	yellowish brown (10YR 5/8, moist)clay,weak fine subangular blocky and weak medium subangular blocky,firm sticky plastic,many medium distinct sharp mottles (2.5YR 4/6),patchy thin clay cutans,common very fine fine pores and few pores,few small spherical soft ferruginous concretions,few fine gravel quartz gravel fragments,gradual smooth boundary to,
130-250 cm	claymoderate fine angular blocky,firm sticky plastic,common very fine fine pores and few pores,few small spherical soft ferruginous concretions,few fine gravel quartz gravel fragments,
Ap 0-11 cm	dark brown (10YR 3/3, moist)clay,strong fine granular,sticky plastic,many very fine pores and many pores,abrupt smooth boundary to,

Kind 1 (parent material) ; Parker (eds), 1984	tuff
Mode of accumulation or deposition of parent material	residual material
Remarks on Parent Materials	Quaternary dacitic tuff
Texture of parent material	clayey
General characterization of the status of weathering of solid rock	highly

Major crops	rubber
Land use or vegetation in the immediate vicinity of the site	tree and shrub cropping
Remarks on Land Use / Vegetation	VEGETATION: Alang-alang

Altitude	40m
Physiographic Unit	slightly dissected plain
Physiographic position of the site	flat
Regional landform; McDonald, R.C., Isbell, R.F. et all, 1984; Australian soil and land survey Field Handbook, Inkata Press, Melbourne.	plain
Slope	2%
Form of the slope surrounding the site	convex
Topography; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	undulating

Drainage class ; FAO (2006) - Guidelines for soil description	well
Kind of ground water table (USDA, 1979)	no groundwater table observed
Moist From - To	0-250cm
Estimated permeability (class) of least permeable part of the profile	moderate

Evidence of alkali ; Soil Survey Manual USDA, 1951	non-alkaline
Evidence of salt; Soil Survey Manual USDA, 1951	non-saline

You are here

Reference soil Indonesia 12: Acrisol

Characteristics

Reference soil ID012: Acrisols

Classification