Problem: What is soil pH a measure of • How is it calculated • Relationship between pH and acidity (more acidic means lower pH etc.....) • What soil processes/factors are affected by pH • The six main cations in the soil, which ones are the basic cations and which ones are acidic • What is base saturation and how is it calculated • Relationship between soil pH, Hydrogen, and base saturation (as also done in lab) • Difference between active and reserve acidity • Sources of soil acidity (what causes it) • What is lime and what does it do with the pH of the soil when added • What are some of the additional benefits of adding lime to soil