Question

multiple choice 1 point
a plant shows purple or reddish leaves and delayed maturity. what nutrient is most likely deficient?
iron
sulfur
magnesium
phosphorus

Explanation:

• Iron deficiency: Causes yellowing (chlorosis) between veins, not purple/reddish leaves.
• Sulfur deficiency: Shows general yellowing, not the specific symptoms here.
• Magnesium deficiency: Causes yellowing starting from lower leaves (chlorosis between veins), not purple/reddish.
• Phosphorus deficiency: Can lead to purple or reddish leaves (due to anthocyanin accumulation) and delayed maturity as it is important for energy transfer and plant development processes.

Answer:

Phosphorus