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Which layer in a soil profile contains the most organic matter the A horizon or O horizon?
Wiki User
∙ 13y ago
It is the O horizon. The A horizon is the mineral horizon and does include a large amount of organic material but the O horizon contains the most abundant amount of organic matter. The O horizon overlies the A horizon.
Wiki User
∙ 13y ago
The O horizon contains the most organic matter in a soil profile. It is the top layer of organic material such as decaying leaves, branches, and other plant debris that is actively decomposing. The A horizon, also known as the topsoil, is a layer rich in minerals and organic matter that is developed from the decomposition of plant material in the O horizon.
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Which layer in a soil profile contains the most organic matter?
The O horizon contains the most organic matter. The O horizon overlies the A horizon which is known as the mineral horizon. O - organic A - mineral E - elluviation B - illuviation C - parent material R - bedrock This is the order in which you will see standard soil horizons.
Where in the soil profile organic matter broken down?
the A horizon
Where in this soil profile are worms and insects vreaking down organic matter in the soil?
A horizon
Which layer in soil contains the most organic matter?
the layer the contain the richest material is the top soil :)
What are the layers of soil and its description?
O-Horizon: leaf litter, organic material A-Horizon: plough zone, rich in organic matter B-Horizon: zone of clay, iron and organic matter C-Horizon: weathering zone, little organic matter and little life R-Horizon:unweathered parent materia
Where in the soil profiles is organic matter broken down?
the A horizon
What are the horizons of the soil?
O-horizon (surface litter)=mainly partially decaying organic matter A-horizon (Topsoil)= mainly contains organic matter, living organisms, inorganic minerals. E-horizon (Eluviated zone)= low quantities of minerals,clay and organic matter due to leeching. B-horizon (Subsoil)= accumulation of iron, aluminium and clay leached down from the A and E horizons. C-horizon (Regolith)= partially broken down inorganic minerals Bedrock
What material makes up horizon b in a soil profile?
it is generally the accumulation of nutrients leached from the top soil and also few amount of organic matter
Which soil horizon is the most important agriculturally?
The A horizon as it consists of mainly organic matter.
What organic material make the A horizon?
fertile material that makes up the Ahorizon
Where in the C horizon is organic matter broken down?
The upper layer is the part of the C soil horizon where organic matter is broken down. The C horizon may be described as soil among the rocks, as opposed to rocks among the soil characteristics of the overlying A and B horizons. It receives the name regolith because of the preponderance of non-organic matter.
How would the soil profile in a rain forest be different from the soil profile in the desert?
The soil profile in a rain forest would be very rich in humus (decayed organic matter). The soil profile in a desert would be almost totally devoid of any organic matter.
