Potatoes - Chlorosis
Symptoms
Younger leaves show interveinal chlorosis and necrosis which occurs in irregular patches. Whitish spots develop within the brown necrotic tissue.
Symptoms may also start on older leaves.
Reasons
Zinc deficiency
Potatoes - Deformation
Symptoms
Younger leaves show interveinal chlorosis and tipburn. Whitish spots can develop within the brown necrotic tissue.
The leaf blades are small, narrow and cupped upward. Shoots can be stunted.
Reasons
Zinc deficiency
Potatoes - Deformation
Symptoms
With zinc deficiency, leaves are smaller and growth is stunted.
The leaves are deformed and fold inwards ('fern leaf of potato' ).
Greyish brown to bronze coloured blotches appear first on the middle of the leaves, later all over the foliage.
Reasons
Zinc deficiency on leaves
Potatoes - Deformation
Symptoms
Younger leaves show interveinal chlorosis. Whitish spots can develop within the affected tissue.
The leaf blades are small, narrow and cupped upward.
Reasons
Zinc deficiency
In potatoes, zinc deficiency symptoms are variable. Generally the leaves are smaller and the plants are stunted in growth.
Potatoes - Deformation
Symptoms
With Zinc deficiency, leaves are smaller and growth is stunted.
The leaves are deformed and folded inwards ('fern leaf of potato' ).
Mature leaves are affected most: greyish brown to bronze coloured blotches appear first on the middle of the leaves, later all over the foliage. Leaf blades show interveinal chlorosis.
Reasons
Zinc deficiency on leaves
Zinc deficiency made worse by
- Organic soils
- High pH soils
- Soils rich in phosphorus
- Soils receiving high phosphorus application
- Cold wet conditions
Zinc is important for
- Healthy green foliage
- Improved tuber yield and quality
