Laterite soil is rich in

A fertile soil is rich in humus.

Which of the following statements regarding soil is /are correct? 1. Alluvial soils are rich in nitrogen content. 2. Black soils are rich in iron and lime but deficint in nitrogen. 3. Laterite soils are ric in iron and aluminium but deficient in nitrogen and potassium. Select the correct answer using the code given below.

Assertion (A): Laterite soils are not very productive for crop plants. Reason (R): Laterite soils contain high concentrations of silica and calcium carbonate.

Assertion (A): Laterite soils are red in colour and coarse in texture. Reason (R) : Abundant phosphoric acid and silica give these soils, the particular colour and texture.