Organic or inorganic materials that are mixed into the soil to enhance its fertility, drainage, and water-holding capacity. Examples of soil amendments include compost, peat moss, vermiculite, and perlite. This includes fertilizer that is added to soil to provide essential nutrients to plants. It can be organic or inorganic, and it typically contains nitrogen, phosphorus, and potassium, as well as other micronutrients like calcium, magnesium, and sulfur.

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