A formulation that is readily absorbable and provides rapid calcium supplementation for plants, with a significant nitrogen content. The fertilizer can be used for solid top dressing, top dressing and foliar fertilization, mainly from the beginning of the intensive growth phase, with multiple treatments to prevent and treat calcium deficiency. Use and doses: in sprouted vegetables, as a nutrient fertilizer, applied as advised from a separate stock tank or in separate applications (0,02-0,1 % solution). In field vegetable crops and other fruit crops (e.g. melons, cucumbers, tomatoes), as a top dressing over the whole area, applied every 14 to 20 days at a rate of 200-400 kg/ha before or after irrigation. For fertilisation, applied as advised from a separate tank of stock solution or in a separate pass (0,02-0,1% solution or 25-50 kg/ha) every 7-14 days. As a foliar fertiliser at a rate of 5-10 kg/ha, with crop protection treatments in a single pass every 7-14 days. In apple orchards before irrigation or with irrigation at a dose of 200-400 kg/ha as a top dressing or as a foliar fertiliser with crop protection treatments in one pass at 3-10 kg/ha. In soft fruit crops, 200-400 kg/ha as head manure before or with irrigation, or 3-10 kg/ha as foliar fertiliser in one application with the crop protection treatments. In ornamentals, mainly as a fertilizer for nutrient application, applied in a single pass at a concentration of 0.05-0.2% every 7-14 days. Foliar fertilisation of flowering stock is not recommended! In potted ornamentals, mainly for nutrient fertilisation, applied in separate applications at a concentration of 0.05-0.1% every 14-20 days (based on expert advice, adapted to the Ca requirements of the crop). Foliar fertilisation of flowering stock is not recommended!