Nutrient Content, %

From Havlin, Beaton, Tisdale and Nelson (1999)

Aqua NH₃
The simplest N solution is aqua NH₃, which is made by forcing compressed NH₃ gas into water. It has a pressure of less than 10 lb/in². and usually is composed of 25 to 29% NH₃ by weight.

Transportation and delivery costs limit aqua NH₃ production to small, local fluid fertilizer plants. Aqua NH₃ is used for direct soil applications or to produce other liquid fertilizers. The NH₃ will volatilize quickly at temperatures above 50F; thus, aqua NH₃ is usually injected into soil to depths of 2 to 4 in. At temperatures over 50F, surface applications of aqua NH₃ should be immediately incorporated into the soil.