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.
Fertility, Soil. the capacity of soil to provide plants with enough assimilable nutrients and moisture to produce crops. A distinction is made between natural and actual soil fertility. The former is determined by the nutrients and moisture present in the soil and by other environmental conditions.