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How is liquefied ammonia applied directly to agricultural soil?

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Difference in molecular structure between ammonia/amines and quaternary ammonium ions — ammonia Ammonia and amines have a slightly flattened trigonal pyramidal shape with a lone pair of electrons above the nitrogen. In quaternary ammonium ions, this area is occupied by a fourth substituent.

Anhydrous ammonia is a specialized fertilizer handled as a liquid under pressure, which converts into a gas upon release to atmospheric pressure. Because it is highly corrosive, flammable, and potentially dangerous, its application requires specialized equipment.12

To apply it directly to agricultural soil, farmers typically use an applicator featuring a chisel-shaped blade. A pipe is mounted on the rear of this blade to conduct the ammonia 13 to 15 cm (5 to 6 inches) below the soil surface. These pipes are fed by a pressure tank mounted on the equipment.12