Question

The absorption capacity of sandy soil is the minimum. Give Reasons?

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Answer 1

The absorption capacity of sandy soil is the minimum because it is less fertile.

Explanation:

Sandy soils are often coarse grained till 50 cm depth, retaining few nutrients and having a limited water retention capacity as a result. Improved soil characteristics and crop yield are aided by soil management measures that increase the fine fraction.

The volumetric soil moisture content remaining at field capacity for sandy soils is 15 to 25 percent, 35 to 45 percent for loam soils, and 45 to 55 percent for clay soils.

Less fertile:

• When the amount of nutrients withdrawn from the soil in harvested goods exceeds the amount of nutrients provided, soil fertility declines.
• In this case, the crop's nitrogen requirements are satisfied entirely by soil reserves.

Answer 2

The absorption capacity of sandy soil is minimum because-

• In sandy soil, the particle size is very large. Due to this, large air spaces are present between the particles. This results in low water retention capacity. Hence, it dries easily.
• Due to low water absorption capacity, the sandy soil is least fertile and are used for growing vegetables such as carrots, potatoes etc.