Ammonium nitrate delivers nitrogen in both ammonium and nitrate forms, which helps plants quickly absorb and utilize. It is highly soluble, so effects are fast-acting when added to soil or for side-dressing. Because nitrogen is mobile, you’ll need to avoid over-application and wash-off (use with irrigation scheduling or rain forecasts). Store safely (it's hygroscopic), and apply in moderate weather to avoid volatilization. Use for cereals, leafy greens, or any crop showing N-deficiency symptoms.