Slide 1
Adjustment of Soil Reaction (pH)
Period 1
adjusting pH
Printable reference generated from local Period 1 material.
Extracted Text and Images
Extracted locally from the source file.
Slide 1
Adjustment of Soil Reaction (pH)
Slide 2
Lowering Soil pH
Elemental sulfur
ferrous sulfate
gypsum
ammonium sulphate
acidic organic matter (sewage sludge)
Slide 3
Compost to lower pH?
Many municipal composts containing urban organic matter have high pH so it should be tested for pH before application
Slide 4
Elemental sulfur
seems to be the most effective and very convenient to apply
add to the top 20 cm of soil
Desired Change in pH
Sand
Loam
Clay
From 8.5 to 6.5
90
115
135
From 8.0 to 6.5
55
70
90
From 7.5 to 6.5
25
40
45
From 7.0 to 6.5
4.5
115
15
Kilograms of Sulfur per 100 m2
Slide 5
Raising pH
Liming in humid region soils
Ground Limestone (CaCO3)
Labs can easily determine the amount based on the known pH, texture and organic matter content
If there is a Magnesium deficiency use Dolomitic Limestone
Extracted Slide Text and Images
Text and media extracted locally from the presentation.
Slide 2
Lowering Soil pH
Elemental sulfur
ferrous sulfate
gypsum
ammonium sulphate
acidic organic matter (sewage sludge)
Slide 3
Compost to lower pH?
Many municipal composts containing urban organic matter have high pH so it should be tested for pH before application
Slide 4
Elemental sulfur
seems to be the most effective and very convenient to apply
add to the top 20 cm of soil
Desired Change in pH
Sand
Loam
Clay
From 8.5 to 6.5
90
115
135
From 8.0 to 6.5
55
70
90
From 7.5 to 6.5
25
40
45
From 7.0 to 6.5
4.5
115
15
Kilograms of Sulfur per 100 m2
Slide 5
Raising pH
Liming in humid region soils
Ground Limestone (CaCO3)
Labs can easily determine the amount based on the known pH, texture and organic matter content
If there is a Magnesium deficiency use Dolomitic Limestone
Presentation
adjusting pH
Soil and Water/adjusting pH.pptx