Author: Anonymous

The natural microbial oxidation of nitrogen released by organic matter mineralization is a major source of soil acidity.

Fungal hyphae have an important influence on soil structure because they ________.

You are working with a soil colloid known to have a cation exchange capacity of about 150 cmolc/kg of clay and a limited tendency to swell when wetted. Which of the following is it most apt to be the dominant clay mineral in this soil?

Soil, like concrete and steel, is a standard construction material. Its properties are well characterized and predictable so that standard building foundation designs can be used uniformly at all building sites of a given topography.

A cover crop is usually grown for the purpose of ________.

In acid soils the principal chemical form of phosphorus available for plant uptake is ________.

Compared to silt, clay-sized soil particles are characterized by:

The four soil forming processes are:

Find the amount of limestone (CaCO3 equivalent = 92) needed to neutralize the same amount of acidity as 2 tons of burned lime with a CaO equilvalent of 90. (M.W. CaCO3 = 100g, M.W. CaO = 56g)

Which of the following is a textural class name?