topsoil

SMART Vocabulary: related words and phrases

Soil
alluvial
boulder clay
clay
clayey
cover crop
earthiness
frozen
humus
lime
loam
ooze
peat moss
sandy
sedimentation
silt
soil
solarization
solarize
unploughed
worm cast

subsoil | American Dictionary

subsoil
noun[ U ]
us/ˈsʌbˌsɔɪl/
earth science
the layer of earth under the topsoil (= the layer of earth in which plants grow)

Examples of subsoil

subsoil
In-row tillage methods for subsoil amendment and starter fertilizer application to conservation tilled-grain sorghum.
The soil type was a sandy-loam with a surface horizon underlain by a weakly-developed clayey, mottled and occasionally concretionary subsoil.
In their second year of development, most third instars overwintered in the subsoil (> 250 mm).
The top soil is about 45 cm in depth and the subsoil is stony.
The subsoil strata were similar in all cases.
Most soils are not fit for the cultivation of millet and sorghum because of impenetrable layers in the subsoil.
Pupation occurred in the subsoil and mean depth differed between sites by 100 mm.
The authors also propose management and prevention thresholds for tire inflation pressure where the carrying capacity of subsoil is used to determine acceptable wheel loads.
A first step taken by many nations and researchers has been to value the stock and depletion of subsoil mineral reserves.
Overall, the adverse effects of subsoil compaction treatment on the yield and yield components of wheat have persisted for at least four years.
The data showed that the adverse effects of subsoil compaction on all the soil physical parameters persisted for at least four years.
Further information is available from the subsoil, however, mainly from boreholes drilled for water pumping during the second half of the twentieth century.
One might expect the topsoil to be drier and the subsoil to be wetter in gaps compared to the understorey.
If shorter-duration varieties of rabi crops are used, they can reach maturity before the residual subsoil moisture is exhausted.
Although the quality of the available information is uneven, an accurate analysis and filtering of the borehole logs provides a useful database of subsoil geology.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.