soil horizon


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Related to soil horizon: soil profile

soil horizon

A layer of soil, approximately horizontal, which differs in structure and composition from the adjacent layers.
References in periodicals archive ?
To reflect the mixing of soil horizons in the calculation of the deep percolation factor, the depth-weighted average of K[sub.
Second, unlike in the case of forest soil, lead is also among de-alkalised chemical elements and its minimum concentration coincides with the minimum concentration of the total carbon in podzolic soil horizon A2.
Most of the soil profiles examined in this study had a soil horizon within the 1.
Collectively, the soil horizons that have undergone the same soil forming conditions are referred to as the solum (Fig.
The proportion of rock fragments in soil horizons was estimated by volume.
For example, a soil horizon that formally was a zone of deposition for carbonates may become a zone of carbonate loss within a ditch soil.
What is a soil horizon, and how does it relate to a soil profile?
However, the aggregate classes were not equally affected by the liming program, suggesting that soil horizons are not entirely homogeneous regions.
Soil Horizon Bt = textural (argillic) B horizon, Bx = fragipan, b = buried horizon.
Yield-reducing drought stresses frequently occur on the southeastern Coastal Plain primarily because of the coarse texture of the Ap soil horizons.
That's significant, because soil carbon and nitrogen are important sources of energy and nutrients for the soil microorganisms responsible for nutrient cycling, and because 70 to 90 percent of a grassland's roots are in that soil horizon.