Teaching tips:
Aluminum sulfate changes instantly, sulfur takes time and it depends on soil
temperature and soil moisture (it can take several months).
Rate: .05lb/sqft of aluminum sulfate
Rate: .02lb/sqft of sculpture
Rate: .04lb/sqft of lime.
Sandy soils will need 10% less than loam, silt or clay soils. Clay and organic soils
tend to be more acidity than mineral soils. Take soil samples at 3" and 12".

This is an example of the original graph.
(click on the image to see full-sized).

This is an example of the revised graph.
(click on the image to see full-sized).

This is an example of the averaged graph.
(click on the image to see full-sized).

This project is supported, in part,
by the

National Science Foundation

Opinions expressed are those of the authors
and not necessarily those of the National Science Foundation.