Because ammonia will tend to move more in dry soil, anhydrous ammonia should likely be injected deeper than normal, DeLaune said. When injecting into dry soil, try to place the anhydrous ammonia at least 8 inches deep.

“Keep in mind that in a clay loam soil, it will require about 1 inch of water to wet the soil profile to a depth of 6 inches,” Bean said. “It should also be noted that excess moisture can prevent the sealing of injection knife openings.

“When injecting anhydrous ammonia, your nose is the best indicator that the ammonia is not being properly held in the soil,” he said. “After making one round in the field, check to see if you can still smell any ammonia. If so, then the equipment may need to be adjusted or the application may have to be delayed until better soil conditions are present.”

He did add, though, that the white ‘smoke’ that is sometimes seen at the time of application is water vapor and not ammonia.