Garden with Insight v1.0 Help: Soil daily N group
N as nitrate by layer: Nitrogen as nitrate (NO3-) ions, which
are readily available to plant roots. Increased by mineralization from fresh organic and active humus N and nitrification from ammonia; decreased by plant uptake, denitrification to ammonia, and loss
in eroded soil.
N as ammonia by layer: Nitrogen as ammonium ions (NH4+).
Increased by denitrification from nitrate; reduced by nitrification to nitrate, volatilization to the atmosphere, and loss in eroded soil. Simulated plants do not take up
ammonia; most real plants do but prefer nitrates.
N as fresh organic in flat residue by layer: Nitrogen in flat
residue (dead plant matter) and live microbial biomass in each soil layer -- 'fresh' meaning 'less decayed'. Increased by decay of standing dead residue and soil
amendments; decreased by mineralization to nitrate and loss in eroded soil.
N as active organic in humus by layer: Nitrogen loosely
bound in organic compounds in the humus of each soil layer. Increased by mineralization of fresh organic
N; decreased by equilibrium flow to stable organic N, mineralization to
nitrate and loss in erosion.
N as stable organic in humus by layer: Nitrogen tightly bound
in organic compounds in the humus of each soil layer. Increased by addition of soil amendments and
equilibrium flow from active organic N; decreased by loss in erosion.