Role in plants
Magnesium is the central atom in chlorophyll and is vital for enzyme activation and energy transfer.
Deficiency symptoms
- Interveinal chlorosis on older leaves
- Leaf curling
- Premature leaf drop
Toxicity symptoms
- Suppression of calcium uptake
- Salinity stress
Natural sources
- Dolomitic limestone
- Clay minerals
- Organic matter
Fertiliser sources
- Magnesium sulphate
- Magnesium nitrate
- Kieserite
Plant uptake forms