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Intro to Soil Science Lec. 1-2 Introduction Book Ch. 1 1/10/2011 7 Plant Essential Nutrients C . B . HOPK i NS CaFe , Co . Cl osed M o n day Mo rning and Ni ght. C-u Z oo n , the Mg . - Of the 92 natural elements, 18 are essential - From air and water: C, H, O - Macronutrients from soils: N, P, K, Ca, Mg, S - Micronutrients from soils: Fe, Mn, B, Zn, Cu, Cl, Co, Mo, Ni Functions of Soils Regulator of Water Supply –Storage and transmission
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Unformatted text preview: –Modify runoff –Purify groundwater –Contribute sediment –Sink and source of pollution Recycler of Raw Materials – Decomposition of organic debris – Production of humus – Mineralization of nutrients – Disposal and utilization of human wastes – Short and long term C storage (sequestration) Functions of Soils...
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