Soil Resources of European Volcanic Systems




 Date of description: July 13, 2001

Authors: A. Kertesz, G. Fuleky, B. Madarasz, O. Feher, P. Buurman

Location: Hungary, TIHANY Peninsula.

Ng17/a- the site located not far from the aid Lavender Plantation.

Altitude: 180m

N46.54.446, E017.51.42
Ng17, Altitude: 162m
N 46.54.483, E 017.51.465

WRB (2001):
Molli-Vitric Andosol (Pachic)
ST (1999): Medial (?), mixed, mesic Humic Vitrixerand


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Local Soil Name: Fekete Nyirok

Note: Fekete means black; Nyirok means moist, humid. Fekete Nyirok is the traditional name for soils with very high clay content and the adjective "fekete" before "nyirok" refers to the quality of the clay (smectite), and to the strong process of humus formation in the soil. In the Hungarian classification the soil belongs to Fekete Nyirok, which are formed on volcanic/eruptive parent materials and are characterised by strong humus formation and weak leaching processes (STEFANOVITS, 1992).

Soil Climate: Xeric soil moisture regime; Mesic soil temperature regime

Topography: Gently rolling landscape,

Position: Lower slope

Relief: Slope gradient 2-5%, slightly concave slope

Microtopography: low molehills, hummocks

Land Use: Nature conservation area (Balaton Highland National Park). Abandoned almond plantation with wild rose, Acer and Prunus.

Human Influence: not tilled

Parent Material: Basaltic tuff

Rock outcrops: None

Surface coarse fragments: None

Surface sealing: None

Erosion: No evidence

Drainage class: Moderately well drained

Groundwater: 12m

Moisture condition: Dry



Ah1:   0-15 cm; black (10YR 2/1); clay loam; no rock fragments; strong fine angular blocky structure; very hard when dry; many fine and very fine roots, very coarse roots; clear and wavy to:

Ah2:   15-35 cm; black (10YR 2/1); clay loam; very few very fine to medium basaltic gravel; strong medium to coarse angular blocky structure; hard when dry; common very fine roots; few to very few medium and coarse roots; clear and smooth to:

AC:    35/40-70 cm very dark grey (10YR 3/1); clay loam; very few to common fine, angular, weathered basalt gravel; strong medium to coarse angular blocky structure, slightly more porous than overlying horizon; firm; few to very few roots of all sizes; clear and smooth to:

C:      > 70 cm unweathered basaltic tuff.


WRB (2001): mollic horizon (0-70 cm); vitric horizon (0-70 cm):

Molli-Vitric Andosol (Pachic)

ST (1999): mollic horizon (0-70 cm); andic soil properties (0-70 cm; presence of sufficient volcanic glass is assumed):

Medial (?), mixed, mesic Humic Vitrixeran

Last modified 30 April 2004 by EG