Soil Solution

1
(No Transcript)
2
Authors Todd Heap and Matt Barnes
The Potassium Cycle
Animal Manures
Plant Uptake
K Fertilizer
Crop Residues
Nonexchangeable K
Slow Exchange
Mass Flow
Diffusion
Micaceous clay minerals (illite, vermiculite,
chlorite)
Fixation
Rapid Release
Weathering
Soil Organic Matter
Soil Solution K
Microbial Pool
Slow Exchange
Potassic micas (biotite, phlogopite, muscovite)
Exchangeable K
Very Slow Exchange
Weathering
Potassic Feldspars (K released by lattice
destruction)
Leaching (K) in soils with low CEC.