Calcium (Ca) - soil and crop
Definition
Calcium or lime is an earth alkali mineral.
Importance
Calcium is vital for plants, strengthening cell walls and improving crop quality. It supports soil structure and reduces compaction risk. Crop needs vary: cereals require ~5 kg/ha, while cabbage, clover, and sugar beet need over 80 kg/ha. Adequate calcium ensures healthy growth and optimal yield.
Calcium in grass and soil: Key factors for fertilisation
Calcium levels in grass have declined, especially in spring. Not all soil calcium is available—pH, crop needs, and absorption inhibitors matter. A tailored fertilisation plan, ensures optimal calcium for soil health and crop quality.
Table 1 : Calcium content (g/kg dry matter); Eurofins Agro 2009-2013
| Fresh grass | Grass silage | Maize silage | Lucerne | |
| Average | 5.4 | 5.0 | 1.6 | 14.2 |
| Target range | 4.5-6.5 | 4.5-6.5 | 1.3-2.2 | 12-18 |
