Reference soil Georgia 04: Acrisol

GE004

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 GE004: Acrisol

Classification

WRB 2014

Stagnic-Ferric-Chromic- Acrisol

100-114 cm	argic horizon
40-200 cm	stagnic horizon

Location:

2.1 KM South of Ozurgeti, along road to Skura Leghva

More images

Physical

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
0-17	-	0.046	0.32	0.343	0.492	0.847	1.9	5	34.498	39.5	58.614
17-40	-	0.021	0.171	0.364	0.396	1.048	2	4	25.839	29.8	68.16
40-78	-	0	0.159	0.34	0.595	0.967	2.1	3.8	21.529	25.3	72.603
78-114	-	0	0.106	0.531	1.051	1.486	3.2	5.4	20.448	25.8	71.015
114-200	-	0.011	0.106	0.18	0.635	1.387	2.3	4.3	19.799	24.1	73.586

Chemical characteristics:

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
0-17	4.43	3.74	0.59	0.001	4.72	0.399	11.842	-	8.866	3.095	0.284	0.284	0	3.7
17-40	4.92	3.77	0.05	0	1.241	0.158	7.875	-	8.841	1.009	0.126	0.378	0	1.5
40-78	4.97	3.62	0.031	0	0.59	0.096	6.181	-	11.964	0	0	0.232	0	0.2
78-114	5.38	3.66	0.013	0	0.545	0.095	5.739	-	10.951	0.258	0.235	0.211	0	0.7
114-200	5.61	3.67	0.016	0.001	0.37	0.095	3.905	-	9.672	0	0.191	0.255	0	0.5

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 %
0-17	13	27.522	-	-	12.6	71	-
17-40	6	25.142	-	-	10.3	85	-
40-78	1	22.331	-	-	12.2	98	-
78-114	3	23.44	-	-	11.7	94	-
114-200	2	21.876	-	-	10.2	95	-

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
40-78	-	-	0.027	0.475	0.047	6.172	1.037	-	-	-	0.284
78-114	-	-	0.022	0.591	0.066	6.464	1.129	-	-	-	0.313
114-200	-	-	0.018	0.418	0.068	7.091	1.017	-	-	-	0.247

Depth (cm)	CaSO4.2H2O %	P Bray mg/kg	P Olsen mg/kg	pH CaCl2	clay_noncarbonate % w/w	clay_carbonate % w/w	phosphorus4 mg/kg	phosphorus1 mg/kg	total_sulfur % w/w
0-17	0	-	-	4.18	57.252	1.362	-	1.218	0.096
17-40	-	-	-	4.19	66.887	1.273	-	0	0.052
40-78	-	-	-	4.1	71.338	1.264	59.504	0.595	0.044
78-114	-	-	-	4.17	71.015	0	62.746	0	0.022
114-200	-	-	-	4.23	73.586	0	84.408	0.17	0.026

Profile description

Ah 0-17 cm	dark yellowish brown; granular; slightly plastic; none (0%); high (15-40%); common; none (0%); interstitial; earthworm channels; non-calcareous (0%); smooth; nearly plane surface
EB 17-40 cm	(dark) brown; columnar; slightly plastic; clay; none (0%); medium (5-15%); few; none (0%); interstitial; earthworm channels; non-calcareous (0%); smooth; nearly plane surface
Btg1 40-78 cm	yellowish red; weak; slightly plastic; clay; medium (6-20 mm); low (2-5%); very few; none (0%); non-calcareous (0%); wavy; pockets less deep than wide
Btcg2 78-114 cm	columnar; slightly plastic; clay; coarse (> 20 mm); low (2-5%); very few; soft; none (0%); non-calcareous (0%); smooth; nearly plane surface
CBcg 114-200 cm	columnar; slightly plastic; clay; coarse (> 20 mm); soft; non-calcareous (0%);

Kind 1 (parent material) ; Parker (eds), 1984	UM2
Remarks on Parent Materials	Alluvial deposits of ancient marine terrace

Major crops	tea
Land improvements ; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	terracing;LV
Land use or vegetation in the immediate vicinity of the site	Abandoned tea planting,non-irrigated tree crop cultivation
Remarks on Land Use / Vegetation	fern and bushes (bramen) that have old overgrown tea
Major vegetation type; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	SE;coniferous forest

Altitude	129m
Hierarchy of major landforms	medium-gradient hill
Physiographic position of the site	upper slope (shoulder) in undulating to mountainous terrain
Slope Aspect	north
Form of the slope surrounding the site	convex
Slope gradient %	10.0%
Topography; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	sloping

Average size of stone	N
Recommended classification of rock outcrops - distance between rock outcrops	none (0%)
Surface stoniness class (FAO (2006) - Guidelines for soil description)	none (0%)

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Reference soil Georgia 04: Acrisol

Characteristics

Reference soil GE004: Acrisol

Classification