Q.
Which one of the following is not a micronutrient?
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a
Magnesium
b
Molybdenum
c
Boron
d
Zinc
answer is A.
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Detailed Solution
Magnesium is a macro-nutrient as it occurs in plant in excess of 10 mmol per kg of dry matter. Molybdenum, zinc and boron are micro-nutrients as they occur in less than 10 mmol per kg of dry matter of plant.
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