LaMotte Soil Chemistry Test Equipment User Manual
Page 9
LIME-ALUM TABLES
Once the pH of a soil is known, the Lime-Alum Tables are used to
determine the average amount of lime or alum necessary to properly
adjust the soil pH.
Group A
Plants
pH Test
Reading
Rate Of Application
lbs/sq yd
lbs/1000 sq ft
tons/acre
4.0
1.5 Limestone
165 Limestone
3.5 Limestone
5.0
1.0 Limestone
110 Limestone
2.0 Limestone
6.0
0.5 Limestone
55 Limestone
1.0 Limestone
7.0
None
None
None
8.0
None
None
None
Group B
Plants
pH Test
Reading
Rate Of Application
lbs/sq yd
lbs/1000 sq ft
tons/acre
4.0
0.75 Limestone
82.5 Limestone
1.5 Limestone
5.0
0.25 Limestone
27.5 Limestone
0.5 Limestone
6.0
None
None
None
7.0
1.0 Alum
110 Alum
2.0 Alum
8.0
2.0 Alum
220 Alum
4.0 Alum
The Average Rates presented here assume the following conditions:
intermediate soil texture, temperate climate, and moderate rainfall. Regular
soil testing before and after lime or alum applications will permit you to
adjust these suggested application rates to suit your particular soil
conditions.
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