How does soil organic matter affect plant growth?
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Organic matter enriches the soil. Nothing enriches the soil like organic matter! When organic matter is mixed with your soil then plants that you grow in that soil are supplied with enormous amounts of nutrients. This is why many agriculturalists say that organic matter is one of the most important sources of nutrients for plants.
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Organic matter contributes to plant growth through its effect on the physical, chemical, physical and physico-chemical function in that it promotes good soil structure, thereby improving tilth, aeration and retention of moisture and increasing buffering and exchange capacity of soils.
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