Agriculture Reference
In-Depth Information
Kale
Calcium: Distortion and cupping of younger leaves with scorching of the edges.
Magnesium and/or iron: Strong yellow marbling of older leaves.
Manganese: Cupped leaf growth and brown, dead spots with mottled edges.
Lettuce
Calcium: Distorted, scorched leaf edges with a tendency to botrytis infection.
Magnesium: Serious yellow marbling on older leaves.
Manganese: Serious yellow marbling that affects the whole plant.
Peas
Calcium: Younger stems and leaves wilt and die.
Magnesium: Yellow patches between the leaf veins but with green edges.
Manganese: Yellow patches between leaf veins that starts at the leaf edges.
Potato
Calcium: Younger growth curled and scorched at the edges; an appearance very
similar to frost burn.
Magnesium: Pale growth and older leaves dying early. This can also appear as a
strong yellowing of leaves between the veins with some patches becoming
brown. It is easily confused with the circular brown spots caused by blight.
Iron: Yellow younger growth with green veins, but with scorched edges and
growing tips.
Manganese: Brown spots developing along veins near growing tips.
Spinach
Manganese: Severe yellowing of the leaves.
Sweetcorn
Magnesium: Strong red/purple tints on the leaves and bright yellow lines
appearing between the leaf veins.
Tomato
Calcium: Growing points die followed by gradual leaf death. This deficiency can
also cause 'blossom end rot'.
