How pH and Eh influence soil nutrient dynamics with microbial mediation
In several disciplines related to agronomy, particularly in soil science and plant physiology, pH has long been regarded as the master variable to be reckoned with. In soil science, nutrient solubility and availability are often presented simply as a function of soil pH, measured and reported along a continuum ranging from extreme acidity (1.0) to extreme alkalinity (13.0), with 7.0 representing a midpoint between the extremes. Alkaline conditions are referred to as “basic,” contrasting them with “acidic” soil conditions. The main physiological processes in plants have been assessed mostly in terms of this parameter of pH, which represents the concentration of protons in the soil (Rengel, 2002; Brady and Weil, 2010).
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| Format: | book_section biblioteca |
| Language: | eng |
| Published: |
CRC Press
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| Online Access: | http://agritrop.cirad.fr/606942/ http://agritrop.cirad.fr/606942/6/ID606942.pdf |
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| Summary: | In several disciplines related to agronomy, particularly in soil science and plant physiology, pH has long been regarded as the master variable to be reckoned with. In soil science, nutrient solubility and availability are often presented simply as a function of soil pH, measured and reported along a continuum ranging from extreme acidity (1.0) to extreme alkalinity (13.0), with 7.0 representing a midpoint between the extremes. Alkaline conditions are referred to as “basic,” contrasting them with “acidic” soil conditions. The main physiological processes in plants have been assessed mostly in terms of this parameter of pH, which represents the concentration of protons in the soil (Rengel, 2002; Brady and Weil, 2010). |
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