A series of thirteen replicated trials in six states conducted between 2017 and 2020 with application rates of 200 to 300 lbs/A showed an average corn yield increase of 11.8 bu/A vs. the untreated control. The thirteen trials were all spring broadcast applications.

Need a sulfur fertilizer that leaves you options for fall or spring application? SO4’s versatility makes it a convenient sulfur source for ag retailers to inventory leaving retailers and growers plenty of choices for when and how it can be applied.

A compilation of 30 trials shows SO4 pelletized gypsum from Calcium Products yields an extra 3.3 bu/A vs no sulfur on soybeans. The average application rate was 100 lbs/A including spring pre-plant and early summer topdress applications.