Which deficiency causes the disease anemia?

$A$ lower concentration of a mineral element causes $...........$ and a higher concentration causes $.............$.

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

The deficiency of molybdenum induces

Symptoms of manganese deficiency can be overcome by the use of

High fluoride concentration in plants typically results in necrosis or chlorosis in: