- The
umbric horizon (Latin: umbra, shade) is a thick, dark coloured,
surface soil
horizon rich in
organic matter. It is
identified by its dark
colour and...
- in
isolation as
captive scholars for the
Gnurr Kett nobility. The
First Umbric Age, in
which the Bas-Lag
novels are set, is a
period of
feuding between...
- iron oxide,
aluminium oxide or
organic matter. They have an
ochric or
umbric horizon and a
cambic subsurface horizon. In the
World Reference Base for...
- calcic, gypsic, petrocalcic, or
petrogypsic horizon, or with a mollic,
umbric, or
histic epipedon, or with an
exchangeable sodium percentage of >15% or...
-
horizon Spodic horizon Terric horizon Thionic horizon Tsitelic horizon Umbric horizon Vertic horizon Source:
Diagnostic surface horizons Anthropic epipedon...
- are
weakly developed, but a
distinct topsoil horizon (but no
mollic or
umbric horizon) may be present. Many
dryland crops are
grown on fluvisols, normally...
- soils" (Polish:
Gleby płowe podmokłe; WRB:
Gleyic Luvisol; ST:
Typic or
Umbric or
Mollic Endoaqualfs,
Typic Argialbolls)
Order 6.
Podzol soils (Polish:...
- (soil) -
Throughflow -
Tifton (soil) -
Tillage -
Topsoil -
Tropical peat
Umbric horizon -
Ultisols -
Umbrisols -
Unified Soil
classification System - USDA...
- rocks.
Diagnostic horizons and
features recognized in this
pedon are an
umbric epipedon from the
surface to 13
inches and an
argillic horizon from 13 to...