Which of the following is incorrect?

A. Red soils are rich in iron

B. Black soils are rich in phosphorus nitrogen and organic matter

C. Alluvial soils are rich in potash but poor in phosphorus

D. Red soils are suitable for cultivation of pulses and coarse grains

Answer: Option B

Solution(By Examveda Team)

Chemically, the black soils are rich in lime, iron, magnesia and alumina. They also contain potash. But they lack in phosphorous, nitrogen and organic matter.