Description: The two areas of possible concern are that i nitrate could be a precursor to in theand nitrite is a precursor to nitrosamines, which are implicated in carcinogenesis, and ii nitrate is implicated ina disorder of hemoglobin in red blood cells.
In addition to KNO 3, the compounds sodium nitrate (NaNO 3), calcium nitrate (Ca(NO 3) 2), and magnesium nitrate (Mg(NO 3) 2) are also sometimes referred to as saltpeter. Saltpeter is one name for the compound called potassium nitrate, which has the chemical formula KNO 3 .
Some iron(III) salts, like the chloride FeCl 3, sulfate Fe 2 (SO 4) 3, and nitrate Fe(NO 3) 3 are soluble in water. However, other compounds like oxide Fe 2 O 3 (hematite) and iron(III) oxide-hydroxide FeO(OH) are extremely insoluble, at least at neutral pH, due to their polymeric structure.
Agronomy Fact Sheet # 59: Magnesium for Field Crops (4/28/2011) Agronomy Fact Sheet # 60: Nitrogen Credits from Red Clover as Cover Crop between Small Grains and Corn (4/20/2011) Agronomy Fact Sheet # 61: Valuing Manure N, P, and K Applications (7/15/2011) Agronomy Fact Sheet # 62: Maximizing Forage Quality in Bunk Silos (9/8/2011)
Atmospheric nitrogen is a source of soil nitrogen. Some plants such as legumes fix atmospheric nitrogen in their roots; otherwise fertiliser factories use nitrogen from the air to make ammonium sulfate, ammonium nitrate and urea. When applied to soil, nitrogen is converted to mineral form, nitrate, so that plants can take it up.
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