Question

What is water holding capacity of soils.

Answer 1

Simply defined soil water holding capacity is the amount of water that a given soil can hold for crop use. Field capacity is the point where the soil water holding capacity has reached its maximum for the entire field.

Answer 2

Water holding capacity is the total amount of water a soil can hold at field capacity. Sandy soils tend to have low  water  storage capacity. Sub-soil constraints (acidity, hardpans etc.) can prevent crops accessing water in the subsoil.