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Site Specific Nutrient Disorders |
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Manganese deficiency
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Areas affected
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In alkaline soils of Tamil Nadu and Maharashtra, manganese deficiency commonly
seen. Manganese deficiency is common in calcareous soils.
Deficiency symptoms
The typical symptoms of manganese deficiency are interveinal chlorosis of leaves
in the middle portion of the cassava plant. Manganese deficiency symptoms will
not be seen on youngest leaves and by which we can distinguish manganese
deficiency from iron deficiency. In case of severe manganese deficiency, the
leaves will become completely chlorotic. |
Manganese deficiency symptoms on cassava leaf
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Manganese deficient plant
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Corrective measures
In manganese deficient areas, soil application of MnO or manganese sulphate or
foliar spray of MnSO44H2O (1-2% solution) is recommended. Dip the stakes in 5%
solution of MnSO4 4H2O for 15 min. before planting. |