Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Mo Molybdenum
Zn Zinc
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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.

Causes
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.

Causes
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.

Causes
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.

Causes
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.

Causes
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

Yara recommended fertilisers for Zinc deficiency

YaraVita ZINTRAC 700

YaraVita ZINTRAC 700

Potatoes: 1 l/ha one week after 100% emergence. For moderate to severe deficiency, repeat applications may be necessary at 10 to 14 day intervals. Also, 1 l/ha following petiole analysis, during tuber bulking. Water rate: 200 l/ha.

Read more about YaraVita ZINTRAC 700

Other recommended products

YaraVita CROPLIFT PRO
YaraVita CROPLIFT PRO
Potatoes: 2.5 to 5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Water rate: 200 l/ha.