Nitrates are organic and inorganic compounds of the chemical element nitrogen (N), which exist in many forms. In the narrower sense, the term refers to the salts of nitric acid (HNO₃). Potassium nitrate and sodium nitrate are colloquially referred to as saltpetre. In addition to nutrients, inorganic nitrates play an important role in plant physiology in various essential processes such as supporting photosynthesis, osmoregulation, nutrient transport and protection against diseases (as do chlorides, phosphates and sulphates). There are the following compounds with the listed functions:
![]()
There is a vast number of sources on the web where one can acquire knowledge about wine. But none has the scope, timeliness and accuracy of the information in the encyclopaedia at wein.plus. I use it regularly and rely on it.
Sigi Hiss
freier Autor und Weinberater (Fine, Vinum u.a.), Bad Krozingen