An ammonium: Uses: used as fertilizer and wood, paper, fabric fire retardant (such as matchsticks and wick ember extinguishing agent), also used drugs. Also used as a ruminant feed additive. Preparation or sources: from phosphoric acid and ammonia, alkali reaction. As the fertilizer ammonium applied during crop growth is the most appropriate, acidic ammonium in the soil, and the seeds are too close to possible adverse effects, in acidic soils than superphosphate, ammonium * Well, in alkaline soils also superior than other fertilizers; not mixed with alkaline fertilizer, so as not to reduce fertility. If you want to use the South acidic soil lime should be separated by a few days after the administration of monoammonium phosphate.