Table 2: Initial soil pH values of each trial location and the amount of hydrated lime and alum (Mg  ) required to change soil pH by 1.0 unit.

LocationInitial soil pHMg  hydrated lime 1.0 pH changeMg  alum 1.0 pH change

Perkins, OK4.861.691.52
Lahoma, OK5.51.312.78
Haskell, OK5.24.12.17