Potassium losses
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-Crop uptake/ removal
-Leaching
-highest in sand (acid soils)
-Erosion
-Runoff
-Fixation
-clay micas
-vermiculite will increase K+ upon oven drying
-smectite will decrease K+ upon oven drying
Sources of Nitrogen
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, -Electrical Discharge
-Commercial fertilizer
-Symbiotic N-Fixation (Rhizobium)
-Plant residue
-Animal residue
-Non-symbiotic N-Fixation
-Acid Rain
Environmental Problems
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-leaching to ground water
-EPA drinking water standard
- blue baby syndrome
-High nitrate concentrations in surface water
-contributes to eutrophycation
K sources
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-Minerals (Micas & feldspars)
-Plant residues ~1-2%
-Animal residues/ manures ~0.5-3%
-Fertilizers
-KCl (sylvite) is lised as K2O on fert bags (often called potash)
Soil Conditions affecting N Cycle
Give this one a try later!
Give this one a try later!
-Crop uptake/ removal
-Leaching
-highest in sand (acid soils)
-Erosion
-Runoff
-Fixation
-clay micas
-vermiculite will increase K+ upon oven drying
-smectite will decrease K+ upon oven drying
Sources of Nitrogen
Give this one a try later!
, -Electrical Discharge
-Commercial fertilizer
-Symbiotic N-Fixation (Rhizobium)
-Plant residue
-Animal residue
-Non-symbiotic N-Fixation
-Acid Rain
Environmental Problems
Give this one a try later!
-leaching to ground water
-EPA drinking water standard
- blue baby syndrome
-High nitrate concentrations in surface water
-contributes to eutrophycation
K sources
Give this one a try later!
-Minerals (Micas & feldspars)
-Plant residues ~1-2%
-Animal residues/ manures ~0.5-3%
-Fertilizers
-KCl (sylvite) is lised as K2O on fert bags (often called potash)
Soil Conditions affecting N Cycle
Give this one a try later!
