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 mobizied or relatively immobile?

It is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves. Name two elements which are highly mobile and two which are relatively immobile.

It is observed that deficiency of a particular element showed its symptoms initially in older leaves and then in younger leaves. How is the aspect of mobility of elements important to horti culture and agriculture?

Deficiency of which element is responsible for early fall of leaves?

The appearance of yellow edges to leaves is due to deficiency of this mineral element,

If a plant shows a symptom which could develop due to deficiency of more than one nutrient, how would you find out experimentally, the real deficient mineral element?

Inspite of presence of all the essential elements in the soil the plants sometimes show symptoms of mineral deficiency. Explain.