calcareous soil

All Sources -
Updated Media sources (1) About encyclopedia.com content Print Topic Share Topic
views updated

Calcareous soil

A calcareous soil is soil that has calcium carbonate (CaCO3) in abundance. If a calcareous soil has hydrochloric acid added to it, the soil will effervesce and give off carbon dioxide and form bubbles because of the chemical reaction. Calcareous soils are most often formed from limestone or in dry environments where low rainfall prevents the soils from being leached of carbonates. Calcareous soils frequently cause nutrient deficiencies for many plants.

views updated

calcareous soil (kălkâr´ēəs), soil formed largely by the weathering of calcareous rocks and fossil shell beds. Different varieties usually contain chalk, marl, and limestone and frequently a large amount of phosphates. They are often very fertile, as in the case of the buckshot soils of the S United States. Sometimes calcareous soils are flinty, thin, and dry. They often form a large part of the soil of deserts, which may prove very fertile when sufficient moisture for crops is applied.

views updated

calcareous soil Soil that contains enough free calcium carbonate to effervesce visibly, releasing carbon-dioxide gas, when treated with cold 0.1 N hydrochloric acid, and which could also be regarded as a basic or alkaline soil.

views updated

calcareous soil Soil that contains enough free calcium carbonate to effervesce visibly, releasing carbon dioxide gas, when treated with cold 0.1 N hydrochloric acid, and which could also be regarded as an alkaline (basic) soil.

views updated

calcareous soil Soil that contains enough free calcium carbonate to effervesce visibly, releasing carbon dioxide gas, when treated with cold 0.1N hydrochloric acid, and which could also be regarded as an alkaline (basic) soil.