Aa Flashcards
(42 cards)
SOIL RESOURCES
• A Horizon (Topsoil) is the layer of soil that contains the highest amount of organic matter
and is crucial for plant growth.
• The process in which water moves down through the soil
taking with it dissolved minerals
and nutrients
is known as leaching.
• Clay refers to the smallest particle size in soil
with a diameter of less than 0.002 millimeters.
• Laterization is the soil-forming process that occurs in humid tropical climates and results in
iron-rich
reddish soils.
• A dense layer of soil that restricts root growth and water movement is called hardpan.
• Gravitational water is a type of water that moves freely through soil due to gravity but is
not typically available to p.
• The vertical cross-section of soil from the surface down to the parent material is known as
a soil profile.
• Salinization refers to the accumulation of salts in soil
often occurring in arid and semi-arid
regions.
• The organic component of soil
formed from the decomposition of plant and animal
matter
is called humus.
• The acidity or alkalinity of soil is measured using the pH scale.
Soil structure is the term for soil particles clumping into distinct shapes or structures.
A type of soil that has a pH level below 7 is classified as acidic.
The process by which soil becomes more mature and develops distinct horizons over time
is known as soil development.
• Hygroscopic water is tightly bound to soil particles and cannot be accessed by plants.
• The breakdown of rocks into smaller fragments through physical
chemical
