Subtleties of the CORRECT use of nitrogen ammonium fertilizers In the fall, fertilizers are usually applied to the soil. To do this correctly, you need to know the characteristics of these or those forms of these "vitamins of fertility." Let's consider the most common forms of mineral fertilizers. Nitrogen The nitrogen fertilizers described in the last issue were in ammonium nitrate (ammonium nitrate) and amide (carbamide) forms. They have their own characteristics: so, under the influence ...