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Question

If the older leaves of a plant shows yellowing and the yield is reduced, then it may be due to the deficiency of:


A

Phosphorus

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B

Potassium

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C

Nitrogen

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D

Magnesium

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Solution

The correct option is C

Nitrogen


When nitrogen is deficient, the older leaves show chlorosis first, because the nitrogen is translocated from older parts to the younger ones. Further, there is a decrease in fruit and seed set as the starch production is decreased due to yellowing of leaves.


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