trees
Soil deficiency and its effects on tree growth:
- Nitrogen
- Poor growth and yellowing of oldest leaves.
- Potassium
- Yellowing then browing of leaf margins
- Iron
- Yellowing of new leaves, veins green.
- Calcium
- Death of growing tips
- Zinc
- Leaves dwarfed and close together.
- Magnesium
- Yellowing of old leaves, veins green.