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en.wikipedia.org/wiki/Ammoniacal_nitrogen

Ammoniacal nitrogen (NH 3-N), is a measure for the amount of ammonia, a toxic pollutant often found in landfill leachate and in waste products, such as sewage, liquid manure and other liquid organic waste products. It can also be used as a measure of the health of water in natural bodies such as rivers or lakes, or in man made water reservoirs. The term is used widely in waste treatment and ...

en.wikipedia.org/wiki/Nitrogen_trihydride

Ammonia is a compound of nitrogen and hydrogen with the formula NH 3.The simplest pnictogen hydride, ammonia is a colourless gas with a characteristic pungent smell. It is a common nitrogenous waste, particularly among aquatic organisms, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers.

homeguides.sfgate.com/ammoniacal-nitrogen-fertilizer-vs-urea-fertilizer-82705.html

Urea & Ammonium Nitrate. The combination form, also called UAN, is a uniform, dry product of ammonium nitrate and urea. Its nitrogen content ranges from about 28 to 32 percent.

www.ruf.rice.edu/~cbensa/Ammonium

Ammonium Nitrogen . Nitrate nitrogen (NO 3-N) and ammonium nitrogen (NH 4-N) are primary indicators of water quality.Ammonia: comes from sewage and landfill leachate. It is very toxic to aquatic life. High concentrations of these nutrients may indicate a well construction problem or an environmental impact in the vicinity of the water supply.

support.hach.com/app/answers/answer_view/a_id/1011356/~/ammonia-vs.-ammonium...

Ammonia and ammonium are different forms of nitrogen. The major factor that determines the proportion of ammonia to ammonium in water is pH. The activity of the ammonia is also influenced by ionic strength and temperature. It is important to remember as un‐ionized NH 3 can be harmful to aquatic organisms, while ionized ammonium is basically ...

www.gardeningknowhow.com/garden-how-to/soil-fertilizers/ammonium-nitrate...

Ammonium nitrate is an odorless, nearly colorless crystal salt. Using ammonium nitrate in gardens and large scale agricultural fields enhances plant growth and provides a ready supply of nitrogen from which plants can draw. Ammonium nitrate fertilizer is a simple compound to make. It is created when ammonia gas is reacted with nitric acid.

www.merriam-webster.com/dictionary/ammonia nitrogen

Ammonia nitrogen definition is - nitrogen combined in the form of ammonia or ammonium.

www.epa.gov/sites/production/files/2015-06/documents/epa-350.1.pdf

DETERMINATION OF AMMONIA NITROGEN BY SEMI-AUTOMATED COLORIMETRY. 1.0 SCOPE AND APPLICATION. 1.1 This method covers the determination of ammonia in drinking, ground, surface, and saline waters, domestic and industrial wastes. 1.2 The applicable range is 0.01-2.0 mg/L NH. 3 .

pubchem.ncbi.nlm.nih.gov/compound/Ammonium-ion

Ammonium is an important source of nitrogen for many plant species, especially those growing on hypoxic soils. However, it is also toxic to most crop species and is rarely applied as a sole nitrogen source. The ammonium (more obscurely: aminium) cation is a positively charged polyatomic cation with the chemical formula NH4+.

midwestlabs.com/wp-content/uploads/2016/11/109-Nitrate-and-Ammonium-Nitrigon...

ammonium-nitrogen as nitrate-nitrogen in the soil, which leads to a better balanced nitrogen uptake, more favorable soil pH surrounding the roots, and a reduction in uptake of nitrate-N by chloride. Chloride was shown to be highly effective in helping to prevent Take-All root rot in wheat, as well as showing positive