Symptoms of dry mouth syndrome. Dry mouth symptoms may include: saliva that feels thick or stringy. rough, dry tongue. the tongue tending to stick against the roof of the mouth. problems with chewing or swallowing (particularly dry foods such as biscuits) bad breath. mouth ulcers.
Once nitrogen is fixed, it is subject to several chemical reactions which can convert it to different organic or inorganic forms. Mineralization occurs in soil as microorganisms convert organic nitrogen to inorganic forms.
Added organic matter changes the level of nitrates in soil. Nitrate (NO3) is a naturally occurring form of nitrogen in soil. This form of nitrogen is created when nitrification, the conversion of ammonium into nitrate, occurs. Nitrate is used as food by plants for growth and production. The level of nitrate in soil varies widely, depending upon the type of soil, climate conditions, rainfall and fertilizing practices.