Reference soil Canada 15: Planosol

CA015

Planosols occur in level landscapes throughout the world often associated with broad river valleys.

Characteristics

Soils having an eluvial horizon, the lower boundary of which is marked. within 100 cm from the soil surface, by an abrupt textural change associated with stagnic properties above that boundary. The feature of albeluvic tonguing, however, is lacking.

Distribution of Planosols (rough estimation supplied by soilgrids)

Reference soil CA015: Planosols

Classification

WRB 1998

Luvi-Hyposodic- Planosol (Albic Orthieutric)

FAO-UNESCO-ISRIC 1988

FAO-UNESCO-ISRIC 1974

Hyposodi-Eutric Planosol

Solodic Planosol

Local classification:	Esher Series, Dark Grey Solod

Other classification

USDA-SCS (1975)

Cryoboralf udic clayey mixed frigid

Profile description

Ap 0-8 cm	greyish brown (10YR 5/2, dry) very dark grey (10YR 3/1, moist)loam slightly gravelly,moderate fine granular,slightly hard very friable slightly sticky slightly plastic,many fine exped interstitial random pores,many fine exped interstitial random pores and,many very fine throughout roots,few coarse gravel and stones fragments,non calcareous 10% HCl,clear smooth boundary to,
E 8-14 cm	pale brown (10YR 6/3, dry) yellowish brown (10YR 5/4, moist)silt loam slightly gravelly,strong medium platy,slightly hard very friable slightly sticky slightly plastic,many fine continuous vesicular random pores and,many fine continuous vesicular random pores,many very fine throughout roots,few coarse gravel and stones fragments,non calcareous 10% HCl,gradual wavy boundary to,
14-19 cm	pale brown (10YR 6/3, dry) yellowish brown (10YR 5/4, moist)clay loam slightly gravelly,moderate medium subangular blocky,hard firm sticky plastic,common very fine continuous interstitial random pores and,common very fine continuous interstitial random pores,few very fine throughout roots,few coarse gravel and stones fragments,non calcareous 10% HCl,clear irregular boundary to,
Bt1 19-39 cm	dark greyish brown (10YR 4/2, dry) grey (10YR 5/1, moist)clay slightly gravelly,medium prismatic parting to strong medium and coarse subangular blocky,very sticky,broken thin clay in root channels and pores cutans,few very fine continuous interstitial vertical pores and,few very fine continuous interstitial vertical pores,few very fine throughout roots,few coarse gravel and stones fragments,non calcareous 10% HCl,gradual wavy boundary to,
Bt2 39-80 cm	very dark grey (10YR 3/1, moist)clay slightly gravelly,weak medium prismatic parting to moderate to strong medium subangular blocky,very hard very firm very sticky very plastic,broken thin clay in root channels and pores cutans,few very fine continuous interstitial random pores,few very fine continuous interstitial random pores and,few very fine throughout roots,few coarse gravel and stones fragments,non calcareous 10% HCl,clear smooth boundary to,
Ck 80-115 cm	dark grey (10YR 4/1, moist)clay slightly gravelly,massive,slightly hard friable very sticky very plastic,few micro discontinuous exped random pores,few micro discontinuous exped random pores and,few very fine throughout roots,few coarse gravel and stones fragments,calcareous 10% HCl,clear irregular boundary to,
2Ck 115-175 cm	greyish brown (2.5Y 5/2, moist)loam slightly gravelly,massive,slightly hard friable slightly sticky slightly plastic,few micro discontinuous exped random pores and,few micro discontinuous exped random pores,no roots,few coarse gravel and stones fragments,calcareous 10% HCl,

Kind 1 (parent material) ; Parker (eds), 1984	mixed lithology and composition
Mode of accumulation or deposition of parent material	glacial outwash
Mode of accumulation or deposition of parent material (second entry)	glacial till
Remarks on Parent Materials	clayey lacustro-till over fine-loamy and fine-silty morainal till
Soil Depth	175cm
Texture of parent material	loamy
Texture of parent material (second entry)	clayey
General characterization of the status of weathering of solid rock	slightly

Intensity of the soil erosion type	slight
Intensity of the soil erosion type (second entry)	slight
Soil erosion type	sheet
Soil erosion type (second entry)	wind

Major crops	crops (unspecified)
Land improvements ; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	ploughing
Land use or vegetation in the immediate vicinity of the site	arable farming
Remarks on Land Use / Vegetation	VEGETATION: Aspen grove

Altitude	730m
Physiographic Unit	slope
Physiographic position of the site	upper slope
Regional landform; McDonald, R.C., Isbell, R.F. et all, 1984; Australian soil and land survey Field Handbook, Inkata Press, Melbourne.	glacial plain
Slope	7%
Slope Aspect	south-east
Form of the slope surrounding the site	straight
Topography; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	rolling

Drainage class ; FAO (2006) - Guidelines for soil description	moderately well
Dry From - To	0-40cm
Flooding frequency (FAO, 1986)	never
Kind of ground water table (USDA, 1979)	no groundwater table observed
Moist From - To	40-175cm
Estimated permeability (class) of least permeable part of the profile	slow
Estimated run off (class)	medium

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

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Reference soil Canada 15: Planosol

Characteristics

Reference soil CA015: Planosols

Classification