Question

The micronutrient least required by plants is

• A. Calcium
• B. Nickel
• C. Magnesium
• D. Boron

Answer 1

The correct option is B Nickel

• Calcium and magnesium are macronutrients required in large quantities.
• The micronutrients required in lesser amounts are zinc, copper, iron, manganese, nickel, molybdenum, chlorine, and boron.
• Nickel is a micronutrient required in the least amount among all micronutrients. In fact, it is not a widely accepted micronutrient.

So, the correct answer is option B.