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topsoil horizon that is generally gray to black, contains the remains of living things (humus)
the system of growing a different crop in a field each year to preserve the fertility of the land
The transformation of arable land into desert either naturally or through human intervention
term used for the central and southern great plains during the 1930s when the region suffered from drought and dust storms
No Till Agriculture
This is where the land isn't plowed and herbicide is used to kill some weeds and some are left.
material from which a soil is formed, determines composition and properties of the soil
Accumulation of salts in soil that can eventually make the soil unable to support plant growth.
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