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What is Understanding Soil Properties and Layers about?
Soil is formed from weathered rock and organic matter. It has different layers called horizons. The topsoil horizon at the surface contains the most nutrients and organic matter which is important for plant growth. Soil properties like texture, structure, permeability, porosity and fertility determine how well soil can support plant life. Texture depends on proportions of sand, silt and clay particles. Structure influences water movement and retention. Fertility relates to a soil
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