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Question
It is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves.
- Does it indicate that the element is actively mobilized or relatively immobile?
- Name two elements which are highly mobile and two which are relatively immobile.
- How is the aspect of mobility of elements important to horticulture and agriculture?
Solution
- If it is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves then this indicates that the element is actively mobilized.
- Highly Mobile elements: Nitrogen and Magnesium. Relatively Immobile elements: Calcium and Boron
- Agriculturist and horticulturist to understand the deficiency of a particular element observed that the deficiency of a particular element is first in older leaves and then comes to younger leaves which shows the elements is actively mobilized. Sulphur is an immobile element so its deficiency is seen in younger leaves first.
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