Determining Critical Soil pH for Sunflower Production

Table 2

Initial soil pH values of each trial-location and amount of hydrated lime and aluminum sulfate required to change soil pH by 1.0 unit.

Location	Initial soil pH	Hydrated lime [Mg ha^−1]	Aluminum sulfate [Mg ha^−1]
Perkins	4.8	1.69	1.52
Haskell	5.2	4.10	2.17
Lahoma	5.5	1.31	2.78