Reference soil Jordan 01: Calcisol

JO001

Calcisols occur in regions with distinct dry seasons, as well as in dry areas where carbonate-rich groundwater comes near the surface.

Characteristics

Soils having a (petro-)calcic horizon (horizon with accumulation of secondary calcium carbonates). In addition, they have no diagnostic horizons other than an ochric or cambic horizon, a calcareous argic horizon, or a gypsic horizon beneath a petrocalcic horizon.

Distribution of Calcisols (rough estimation supplied by soilgrids)

Reference soil JO001: Calcisol

Classification

WRB 2014

Calcisol

Location:

Eastern Diban (+ 3.5 km NE)

Physical characteristics

Water retention characteristics

Depth (cm)	Bulk density kg/dm³	pF 0 % v/v	pF 1.0 % v/v	pF 1.5 % v/v	pF 2.0 % v/v	pF 2.3 % v/v	pF 2.7 % v/v	pF 3.4 % v/v	pF 4.2 % v/v
6-21	1.1	-	-	0.62	0.5	0.47	-	-	0.16
21-52	1.14	-	-	0.58	0.52	0.5	-	-	0.19
52-87	1.15	-	-	0.55	0.51	0.49	-	-	0.25
87-155	1.29	-	-	0.54	0.51	0.5	-	-	0.26

Depth (cm)	pf_05 cm³/cm³	pf_25 cm³/cm³	pf_30 cm³/cm³	pf_35 cm³/cm³	pf_6 cm³/cm³	pf_7 cm³/cm³
6-21	0.64	0.46	-	0.23	-	-
21-52	0.67	0.49	-	0.2	-	-
52-87	0.61	0.48	-	0.3	-	-
87-155	0.57	0.49	-	0.35	-	-

Profile description

Ap1 0-6 cm	yellowish brown(10YR 5/6, moist) brownish yellow(10YR 6/6, dry); silt loam weak fine/thin subangular blocky subangular blocky ; slightly sticky slightly plastic ; none cutans; no (0%) mottles; very low (< 2%) pores; common fine few very fine roots; very few (0-2%) ; abrupt (0-2 cm) smooth; nearly plane surface boundary to
Ap2 6-21 cm	yellowish brown(10YR 5/8, moist) reddish yellow(7.5Y 6/6, dry); silt loam subangular blocky subangular blocky ; slightly sticky slightly plastic ; none cutans; no (0%) mottles; medium (5-15%) pores; common fine roots; carbonates (calcareous) soft concretion ; none (0%) ; strongly calcareous (10–25%) soft concretions ; clear (2-5 cm) wavy; pockets less deep than wide boundary to
Bk1 21-52 cm	strong brown(7.5YR 4/6, moist) reddish yellow(7.5Y 6/6, dry); silt loam coarse / thick subangular blocky subangular blocky ; slightly sticky slightly plastic ; none cutans; no (0%) mottles; medium (5-15%) pores; many fine roots; carbonates (calcareous) soft concretion ; none (0%) ; strongly calcareous (10–25%) soft concretions ; clear (2-5 cm) smooth; nearly plane surface boundary to
Bk2 52-87 cm	strong brown(7.5YR 4/6, moist) strong brown(7.5Y 5/6, dry); sandy clay loam medium subangular blocky subangular blocky ; friable slightly sticky slightly plastic ; discontinuous irregular pedfaces cutans; no (0%) mottles; low (2-5%) pores; none coarse none fine none very fine none very fine roots; medium (6–20 mm) carbonates (calcareous) soft concretion ; none (0%) ; strongly calcareous (10–25%) soft concretions ; clear (2-5 cm) smooth; nearly plane surface boundary to
BC 87-155 cm	strong brown(7.5YR 4/6, moist) strong brown(7.5Y 5/6, dry); sandy clay loam medium subangular blocky subangular blocky ; friable sticky ; discontinuous irregular pedfaces cutans; no (0%) mottles; medium (5-15%) pores; none coarse none fine none very fine none very fine roots; medium (6–20 mm) carbonates (calcareous) soft concretion ; none (0%) ; extremely calcareous (> 25%) soft concretions ;

Age of the land Surface	older, pre-tertiary land surfaces, commonly high planes, terraces or peneplains, except incised valleys, frequent occurrence of palaeosoils.
Remarks on Parent Materials	Carbonate rock (limestone)

Intensity of the soil erosion type	slight
Soil erosion type	gully erosion
Classification of total area affected by erosion and deposition	5%-10%

Major crops	wheat
Land improvements ; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	ploughing
Land use or vegetation in the immediate vicinity of the site	rainfed arable cultivation
Major vegetation type; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	xeromorphic dwarf shrub

Altitude	759m
Hierarchy of major landforms	plateau
Physiographic Unit	intermediate part (talf) in flat or almost flat terrain
Slope	05%
Form of the slope surrounding the site	concave
Slope forms and surface pathways	concave straight
Slope gradient %	4.0%

Surface stoniness class (FAO (2006) - Guidelines for soil description)	very few (0-2%)
Classification of surface cracks - depth	surface (< 2 cm)
Classification of surface cracks - distance between cracks	very closely spaced (< 0.2 m)
Surface cracking	fine (< 1 cm)
Recommended classification of rock outcrops - distance between rock outcrops	none (0%)

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Reference soil Jordan 01: Calcisol

Characteristics

Reference soil JO001: Calcisol

Classification