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31.page2 - NRES 201 Intro Soil Science Lee 31 Sulfur Ch.12...

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Unformatted text preview: NRES 201 Intro Soil Science Lee 31 Sulfur Ch.12 Differences between N and S Elemental occurrence lgas N3) solid 15”) Mineralogical occurrence 0 N does not occur in minerals. except as: l-‘ixed Nl—l4t Geologic deposits of NO}; mainly in arid or semiarid regions 0 S occurs in many sulfide and sulfate minerals. such as: Pyrite tl-‘ef‘ ) Gypsum t (11504-21130 ) Differences between N and S Bioltwic - 1\IZIJ()1‘ input of soil N a Does not occur for S Volatilization from soil - N as simple inorganic compounds - Mainly N2, N20, and NH3 - S as volatile organic compounds, e.g. HZS Plant demand - Much greater for N than for S Differences between N and S in acronutricnt Typical concentration ‘1‘ C 45 O 45 H (3.0 N 1.5 K 1.0 ‘ 0.5 0.2 0.2 0.1 u'essed as :1 percentage by weight 0101') mullet: 3/31/2009 ...
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