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Copy link Polysulphate Corn Trial on Okolona Silty Clay
27
Yield increase
Polysulphate increased corn yields by 27% in Mississippi, USA trial
Brooksville, Mississippi, USA 2021
27
Key Conclusions
In corn production on high organic matter soil with high soil test sulfur, Polysulphate is a viable source of sulfur. Polysulphate increased corn yields by 7% compared to potassium chloride (KCL) applied with elemental sulfur (S) as the sulfur source.
Objective
Evaluate the performance of Polysulphate fertilizer rates in corn when applied spring pre-plant, compared to equivalent units of sulfur (S) applied in the standard grower program as elemental S.
Trial Details
Trial station
Brooksville, Mississippi, USA
Crop
Corn
Product
Polysulphate®
Assessments
Yield (bu/a).
Treatments
- This randomized complete block trial consisted of three replicates with 9 treatments.
- All application was done pre-plant incorporated.
- Potassium Chloride (KCL) was applied with the elemental sulfur (S) to match K level in Polysulphate.
- Polysulphate and elemental sulfur was tested to supply up to 40 lbs/A actual sulfur.
- Treatments shown here include: Control (without S application ), Polysulphate 10 lbs S/A and Elemental S 10 lbs S/A + 6 lb K/A
Treatments
- This randomized complete block trial consisted of three replicates with 9 treatments.
- All application was done pre-plant incorporated.
- Potassium Chloride (KCL) was applied with the elemental sulfur (S) to match K level in Polysulphate.
- Polysulphate and elemental sulfur was tested to supply up to 40 lbs/A actual sulfur.
- Treatments shown here include: Control (without S application ), Polysulphate 10 lbs S/A and Elemental S 10 lbs S/A + 6 lb K/A
Results
- Corn yield increased with application of sulfur fertilizer.
- Polysulphate at 10 lbs S/A increased corn yield by 27% compared to the control without sulfur. • Polysulphate at 10 lbs S/A increased corn yield by 7% compared to S plus KCL applied at the same rate.
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