Which nutrient deficiency is shown?

Which nutrient deficiency is shown?

• A. Phosphorus
• B. Nitrogen
• C. Potassium
• D. Calcium

Answer: (C)

Potassium deficiency shows up as damage along the leaf edges, usually starting on the older leaves. You’ll often see yellowing that moves inward from the margins, followed by brown, scorched or necrotic tips and edges while the veins stay relatively green. This pattern happens because potassium is mobile in the plant and is essential for regulating water movement and enzyme activity; when it’s lacking, cells at the margins struggle to maintain turgor, especially in hot or dry conditions, leading to edge burn. This distinctive marginal scorch is what sets potassium apart from the other nutrients. Nitrogen deficiency tends to yellow or pale entire leaves, starting with older foliage. Phosphorus deficiency often causes dark green to purplish leaves and stunted growth. Calcium deficiency affects new growth and can cause issues like blossom-end rot. So the signs pictured align with potassium deficiency.

Potassium deficiency shows up as damage along the leaf edges, usually starting on the older leaves. You’ll often see yellowing that moves inward from the margins, followed by brown, scorched or necrotic tips and edges while the veins stay relatively green. This pattern happens because potassium is mobile in the plant and is essential for regulating water movement and enzyme activity; when it’s lacking, cells at the margins struggle to maintain turgor, especially in hot or dry conditions, leading to edge burn.

This distinctive marginal scorch is what sets potassium apart from the other nutrients. Nitrogen deficiency tends to yellow or pale entire leaves, starting with older foliage. Phosphorus deficiency often causes dark green to purplish leaves and stunted growth. Calcium deficiency affects new growth and can cause issues like blossom-end rot. So the signs pictured align with potassium deficiency.