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| Soil properties associated with wetness that result from the reduction and oxidation of iron and manganese compounds after saturation and desaturation with water. |
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| Zones of accumulation of Fe-Mn oxides in soil. |
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| Zones of low chroma (<2) where Fe-Mn oxides, and in some cases clay, have been stripped from the soil. |
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| The gain of electrons, and therefore the loss of positive valence charge, by a substance. In some cases, a loss of oxygen or a gain of hydrogen is also involved. |
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| The loss of electrons by a substance; therefore, a gain in positive valence charge, and, in some cases, the chemical combination with oxygen gas. |
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| When the O2 supply is virtually exhausted the soil environment is said to be anaerobic. Slows down decomposition rates. |
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Oxidized form =O2 Reduced form = H20 So, when things are reduced they are gley / low chroma as a result of being waterlogged. When the soil is aerated better it is oxidized, and "more colorful". |
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Oxidized form = NO3 (nitrate) Reduced forms = N20, N2, NH4 |
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Oxidized form = CO2 Reduced form = CH4 (methane) |
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| Study the handouts, look for temp patterns on the graphs....Good luck! |
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