Soil Fertility - PowerPoint PPT Presentation

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Soil Fertility

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Soil Fertility Carolina Medina Soil & Water Science Dept. University of Florida * Nitrogen Cycle Nitrogen Cycle Crop Residue Animal Manure Chemical Fertilizers ... – PowerPoint PPT presentation

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Title: Soil Fertility


1
Soil Fertility
  • Carolina Medina
  • Soil Water Science Dept.
  • University of Florida

2
Nitrogen Cycle
3
Nitrogen Cycle
4
Nitrogen Cycle
5
Nitrogen Cycle
6
Nitrogen Cycle
7
The Haber-Bosch process
N2
H2
N2(g) 3H2(g) ? 2NH3(g) ?Ho
NH3
8
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9
(No Transcript)
10
Phosphorus Leaching in FL soils
11
Eutrophication
Polluted Water
12
Readily available
Less available
Very less available
13
Where Potash comes from?
Mining Equipment
Sylvinite
Potash Pile
14
Carbon Cycle
15
Importance of Soil Organic Matter
  • Soil Chemical Properties
  • Cation-exchange capacity
  • Soil Physical Properties
  • Soil aggregation
  • Water holding capacity
  • Energy source for microbes

16
Factors determining SOM levels
  • Microbial Activity
  • pH
  • Soil Moisture
  • Soil Aeration
  • Soil Temperature
  • C/N Ratio
  • Physical Factors
  • Surface placement
  • Particle Size
  • Environmental Factors
  • Climate
  • Vegetation
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