BOBIE.INFO, Matabu, Barito Timur. Factors that drive or influence the absorption of soil nutrients by plants include several physical, chemical, and biological aspects. The following are the main factors:
1. Availability of Nutrients in Soil
• Nutrients must be available in a form that can be absorbed by plants, such as ions (examples: NO₃⁻, NH₄⁺, K⁺, PO₄³⁻).
• This factor is influenced by soil type, soil pH, and the level of organic matter decomposition.
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2. Soil pH
• Soil pH affects the solubility of nutrients.
• The optimal pH for most plants ranges from 5.5 to 7.0.
• A pH that is too acidic or too basic can inhibit the absorption of certain elements, such as Fe or P.
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3. Soil Moisture
• Water in the soil functions as a solvent and a medium for transporting nutrients to the roots.
• Soil that is too dry or too saturated with water can inhibit absorption.
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4. Soil Temperature
• Soil temperature affects the activity of roots and soil microorganisms.
• Low temperatures reduce the rate of chemical reactions and root metabolism so that nutrient absorption slows down.
5. Soil Microorganism Activity
• Microorganisms help the process of decomposition of organic matter and release of nutrients (mineralization).
• Some bacteria also help with nitrogen fixation or phosphate dissolution.
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6. Condition and Structure of Plant Roots
• Healthy roots, with many branches, and a large surface area will absorb nutrients more efficiently.
• The presence of root hairs is very important in increasing absorption.
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7. Soil Cation Exchange Capacity (CEC)
• Soil with high CEC (for example clay or rich in organic matter) is able to store more nutrients that are ready to be absorbed by plants.
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8. Competition between Nutrients
• High concentrations of one element can inhibit the absorption of other elements, for example: excess K⁺ can inhibit the absorption of Mg²⁺ and Ca²⁺.
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If you are interested, I can also help explain how to optimize nutrient absorption through proper cultivation or fertilization techniques.Bobie.
