A farmer in St. Vincent noticed that his dasheen plants had yellowing leaves starting from the older leaves and moving upward. Which nutrient deficiency is MOST likely responsible for this symptom?

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Question

A farmer in St. Vincent noticed that his dasheen plants had yellowing leaves starting from the older leaves and moving upward. Which nutrient deficiency is MOST likely responsible for this symptom?

Accepted Answer

Nitrogen — Award 1 mark for identifying nitrogen deficiency. Nitrogen is mobile in plants, so deficiency symptoms appear first in older leaves as the nutrient is translocated to younger tissues. B is incorrect — iron deficiency causes interveinal chlorosis in young leaves first. C is incorrect — calcium deficiency affects growing points and causes blossom end rot. D is incorrect — boron deficiency causes distorted growth and hollow stems.

Answer

Calcium

Answer

Boron

Answer

Iron

Answer

Nitrogen

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