Greetings! I am a student researcher that humbly asks for professional advice regarding the question if the structure of a water-retaining material affects its water-retaining capability?
Hans Rico F Duenas Soil texture and organic matter have the greatest influence on water-holding capacity. Smaller particle soils (silt and clay) have a bigger surface area than larger sand particles, and a larger surface area permits a soil to store more water.
To some extent, the amount of organic matter in the soil impacts water holding capacity. The ability of a certain soil texture to physically hold water against the force of gravity is referred to as its water holding capacity. It accomplishes this via soil particles binding water molecules together through the force of cohesion.