Reference soil Russian Federation 12: Planosol

RU012

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 RU012: Planosols

solodic calcic Planosol endogleyic epiclayic, Location:Hrenovoe, 10 km to east

Classification

WRB 2006

Solodic-Calcic- Planosol (Endogleyic Clayic)

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Physical characteristics

Water retention characteristics

Depth (cm)	Bulk density kg/dm³	Spec. Surf. Area m²/g	COLE cm/cm	Water disp. clay %	Clay % w/w
23-33	1.5	-	-	-	-

Other physical data

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
23-33	1.5	-	-	-	-	-	-	-	-

Profile description

O -3-0 cm	black (10YR 2/1, moist)many worm channels and other insect activity,clear smooth boundary,
Ah 0-12 cm	dark greyish brown (10YR 4/2, moist)loam,moderately coherent medium subangular blocky,very friable (moist), slightly sticky, slightly plastic,common fine and medium interstitial pores,many very fine and fine, common medium and coarse roots,many worm channels,clear wavy boundary,
E 12-20 cm	dark grey (10YR 4/1, moist) grey (10YR 5/1, dry)loam,weak coarse angular blocky,slightly hard (dry), friable (moist), slightly sticky, slightly plastic,common fine and medium interstitial pores,common very fine and fine, few coarse roots,common worm channels,clear smooth boundary,
EB 20-30 cm	very dark greyish brown (10YR 3/2, moist)clay,moderately coherent coarse subangular prismatic,firm (moist), sticky, plastic,common (5-15%) fine distinct sharp mottles 7.5YR4/4 ((dark) brown),few fine and medium interstitial pores,few fine and few coarse roots,few biological activity,clear wavy boundary,
30-60 cm	dark brown (10YR 3/3, moist)clay,moderately coherent medium prismatic,firm (moist), very sticky, very plastic,many (15-40%) medium prominent clear mottles 7.5YR4/4 ((dark) brown),many distinct, continuous clay cutans on pedfaces,few medium interstitial pores,few fine and medium roots,very few fine soft black rounded iron manganese nodules,few infilled large burrows and other insect activity,gradual smooth boundary,
60-90 cm	greyish brown (10YR 5/2, moist)clay,strong very coarse prismatic,very firm (moist), very sticky, very plastic,many (15-40%) coarse distinct clear mottles 10YR5/6 (yellowish brown),many distinct, continuous clay cutans on pedfaces,few fine interstitial pores,few very fine and fine roots,very few fine soft black rounded iron manganese nodules,few infilled large burrows,gradual smooth boundary,
Bt,Ca,g 90-129 cm	greyish brown (10YR 5/2, moist)clay,moderate very coarse prismatic,very firm (moist), very sticky, very plastic,abundant (>40%) fine distinct clear mottles10YR5/6 (yellowish brown),many distinct, continuous clay cutans on pedfaces,few fine interstitial pores,very few fine roots,few fine irregular soft and hard white calcareous concretions,few infilled large burrows,

Land use or vegetation in the immediate vicinity of the site	not used and not managed
Major vegetation type; Guidelines for soil description - Fourth edition (FAO, Rome, 2006)	deciduous woodland

Altitude	143m
Regional landform; McDonald, R.C., Isbell, R.F. et all, 1984; Australian soil and land survey Field Handbook, Inkata Press, Melbourne.	plain

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Reference soil Russian Federation 12: Planosol

Characteristics

Reference soil RU012: Planosols

Classification