| Element | Use in Plant | Signs of Deficiency | Appears | ||
| Calcium | Ca | Needed for cell walls, roots, leaves, pollination and fruit set. | Younger leaves are distorted. Leaves may appear corrugated
Leaves more frail – will break before they bend Leaves are more erect or upright than usual Leaf margins curl downward (as the margins grow slower than the rest of the leaf) More prone to wilting In severe cases leaves may not develop at all – just the stem of the leaf (petiole). Dead (necrotic) areas on fast growing leaves Blossom end rot on Tomatoes Tip Burn on Lettuces |
On younger leaves first. | |
| Nitrogen | N | ||||
| Phosphorus | P | ||||
| Copper | Cu | ||||
| Iron | Fe | ||||
| Zinc | Zn | ||||
| Manganese | Mn | ||||
| Potassium | K | ||||
| Magnesium | Mg |