What Causes Tongue Disorders? Hairy tongue and discolored tongue (in which papillae, the small projections on the tongue, become elongated or darkened) may be caused by tobacco, foods or medications such as antibiotics. Poor oral hygiene is a contributing factor.
Soil moisture is the amount of water contained in the soil after precipitation seeps into the ground. 1.The degree to which water clings to the soil is the most important soil water characteristic to a growing plant. This concept is often expressed as soil moisture tensi â¦ on.
Soil Moisture Deficit. from Glossary of Meteorological Terms (2015) by American Meteorological Society. The difference between the amount of water actually in the soil and the amount of water that the soil can hold. The amount of water the soil can hold is generally called field capacity, which is the amount of water that remains after gravitational forces have drained water from the soil macropores.