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Competency Area 5: Soil conservation AEM

PO 54. Understand the concept of soil tilth and the roles of soil texture, organic matter,structure/aggregation, and bulk density as they affect tilth.

Soil tilth refers to the physical condition of the soil in relation to plant growth. Tilth tends to decrease with particle size (sand>silt>clay), and organic matter content. Soils with good tilth have high aggregate stability, and low bulk density.