Principles of Soil Classification Quiz

Soil Classification

• The term 'Polypedon' refers to a group of soil series that have similar characteristics and properties.

Soil Survey

• The individual is the basic sampling unit used in soil surveys.

Soil Classification Schemes

• V.V. Dokuchaev is credited with organizing soils into groups with similar observable properties based on broad climatic zones.
• Konstantin Glinka developed a soil classification scheme in the 1920s.

Soil Units

• The smallest volume that can be called a soil is a Pedon.
• A Polypedon is a group of soil series that have similar characteristics and properties.

Soil Taxonomy

• There are approximately 700 soil series in the Philippines.
• The most detailed category in Soil Taxonomy is the Series.
• The purpose of Soil Taxonomy is to provide a standardized system for classifying soils based on their properties and characteristics.
• The presence or absence of diagnostic horizons determines the Suborder in Soil Taxonomy.
• The Lipa Series represents a specific soil series in Soil Taxonomy.
• The Natric horizon contains high levels of sodium ions.
• The Family category in Soil Taxonomy is determined by factors such as the texture, mineralogy, and temperature regime of the soil.
• The Oxic horizon is characterized by high levels of iron oxides and quartz.
• The characteristic that determines the Great Groups in Soil Taxonomy is the presence or absence of certain diagnostic horizons.
• The purpose of establishing groups or classes for practical purposes in Soil Taxonomy is to help manage and utilize soil resources effectively.