Can liquid ammonia be used as fertilizer for your lawn?

yes . liquid ammonia can be used as a fertilizer for your lawn , you must be very sure that you dilute it to 3/4 water and 1/4 ammonia or it will eat your grass and kill

As a point of fact, Fritz Haber was the first chemist to make ammonia in the form we know it to this day, back in 1915. They claimed to have made it as a fertilizer, but it was really used to make mustard gas and explosives during World War I. Ironically, Haber was Jewish, and these gases were used to exterminate Jews, forcing him to flee his native Germany. http://nobelprize.org/nobel_prizes/chemistry/laureates/1918/haber-bio.html