Discussion
The following are the plant nutrients :
P, B, Cu, Mg, Mn, N
Select the micronutrients out of the list given below :
Answer: B
The micronutrients are B, Cu, Mn.
Plants need micronutrients in trace amounts, usually under 100 mg/kg of dry matter: boron, copper, manganese, zinc, iron, molybdenum, chlorine and nickel.
Nitrogen and phosphorus are primary macronutrients and magnesium is a secondary macronutrient, so options with P, N or Mg are wrong. 'Cu and Mn only' leaves out boron.
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