While visiting with a dealer last week, I (Glen) discussed the attributes of different sulfur fertilizer sources. The final choice between ammonium sulfate and calcium sulfate came down to the cost for a unit (#) of sulfate sulfur. Here is what my calculations showed (these prices are not suggested to be indicative of every particular situation, but only an example):
Ammonium sulfate (AMS), 21-0-0-24S, was costing $0.75 per unit of sulfur (nitrogen value set to 0).
Calcium sulfate (SO4), 0-0-0-17S-22Ca, was costing $0.59 per unit of sulfur (calcium value set to 0).
If the sulfur requirement for 5 Ton alfalfa removal is 30# (6# sulfur per Ton), the cost for sulfur nutrition from AMS was $22.50 per acre, with the SO4 providing the same 30# of sulfur, but for a cost of $17.70 per acre. Net difference (savings) to the grower of $4.80 per acre.
Not a huge difference, but still a 20% decrease in cost. With the economic challenges of livestock production today, every little bit helps.
SuperCal SO4, the right fit, right now.
The Blogronomist is maintained by Craig Dick, head blogronomist and VP of Sales and Marketing. Here you will find a wide array of blog articles from Craig and expert guests on topics related to soil and crop health, farming, and so much more. If it’s not here, ask us!