Which type of soil property is conveyed by the concept of "weight per volume"?

The concept of "weight per volume" directly relates to bulk density, which is defined as the mass of soil per unit volume, including the air space and water within the soil. Bulk density is a critical property of soil because it helps to assess the soil's compaction, porosity, and overall structural integrity. It influences the soil's capacity to hold water and support plant growth, making it a key factor in studies of soil health and land management.

In contrast, permeability refers to the ability of soil to transmit water and air, which is not directly a measure of weight relative to volume. Porosity involves the volume of voids or spaces in soil compared to its total volume, focusing on how much air and water the soil can hold rather than its weight. Soil texture describes the size distribution of soil particles (sand, silt, and clay) and does not factor in the weight per volume either. Hence, understanding that bulk density is the measure of weight per volume highlights its significance in soil science and management practices.