You'll need 4.76 pounds of ammonium sulfate to yield 1 pound of actual nitrogen.
From the sacbee.com
Investigators believe it may have been set off by ammonium nitrate stored there.
From the nytimes.com
The main organs involved with the release of this excess ammonium are the gills.
From the en.wikipedia.org
If dirt is extensive, use a paste jelly formula such as EDTA ammonium carbonate.
From the en.wikipedia.org
Residue from the burning fertilizer ammonium nitrate can irritate skin and lungs.
From the cnn.com
Runoff samples were analyzed for nitrate, ammonium, and pesticide concentrations.
From the sciencedaily.com
Ammonium phosphate and iron oxide give the retardant its distinctive red color.
From the edition.cnn.com
The glufosinate ammonium weedkiller applied to the maize will also need approval.
From the newscientist.com
Excess ammonium ferric citrate and potassium ferricyanide are then washed away.
From the en.wikipedia.org
More examples
The ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion
An ion with formula NH4^+ that does not exist in nature except in combination with other ions (as in ammonium chloride, NH4Cl). ...
One form of nitrogen that is usable by plants.
Ammonia nitrogen (NH4-N) is found in aqueous solutions as ammonium ion (NH4+) or ammonia gas (NH3), depending on the pH and the temperature of the solution. It is a bioavailable form of the macronutrient nitrogen and found in many fertilisers. ...
A plant-available form of nitrogen contained in many fertilizers and generated in the soil by the breakdown of organic matter. See nitrogen cycle.
Perchlorate has a density of 1.95 g/mol, and is very soluble in water, as well as many other solvents.
The ionized form of ammonia; its properties are similar to those of alkali metals sodium and potassium; NH4.