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Ch:14 Soils and Minerals - Coggle Diagram
Ch:14 Soils and Minerals
Mineral nutrition
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For Eg: Potassium, iron, carbon etc.
Essential Elements
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Major essential elements
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for ex: nitrogen, potassium, phosphorus etc.
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Trace elements
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For ex: iron, boron, zinc
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Cation Exchange
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absorbed by roots or root hairs #
generated from decomposition of hummus, acid rain
soil pH, proton concentration important for cation exchange
affects the chemical form of elements, change solubility
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Nitrogen Metabolism
Nitrogen fixation
conversion od N2 into nitrate, nitrite or ammonium
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For Ex: Alnus, bog myrtle, Casuarina equisetifolia
Nitrogen reduction
reducing nitrogen into nitrate ion, NO3^-
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Prokaryotes and Nitrogen
Nitrifying bacteria
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For eg: Nitrosomonas, Nitrococcus
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Denitrification
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For Eg: Hyphomicrobium, Pseudomonas
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