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.
Nitrogen is the nutrient most often deficient for crop production in Minnesota and its use can result in substantial economic return for farmers. However, when N inputs to the soil system exceed crop needs, there is a possibility that excessive amounts of nitrate (NO 3--N) may enter either ground or surface water.