Nitrogen fertilizer with Sulfur application at foot slope of Field

Trial Type

N Fertilizer

General Stats

County
Brookings
Replications
4
Crop
Soybean
Seed Brand
No Value
Variety
No Value
Relative Maturity
1.0
Tillage
Conventional Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
30"
Plant Population
160000
Plant Date
15/06/2019
Cover Crop
No Value
Seed Treatment
No Value

Soil Stats

Soil Type
Fine
Soil pH
7.0
Organic Matter
No Value

Methodology

This trial was conducted at foot slope (Lower Elevation) of the field. Soybeans were planted on June 15, 2019 at 160,000 seeds/acre in 30-inch rows. Nitrogen and sulfur fertilizer were applied at the rate of 30 lb/ac and 15 lb/ac respectively at R3 growth stage. Fertilizer source for nitrogen was polymer coated urea whereas for sulfur it was ammonium sulfate. Both fertilizer treated and untreated treatment had four replications. Plot size for this experiment was 10 feet wide and 30 feet long. For the data analysis each fertilizer treated replication were compared with untreated replications.

Results

Overall, at foot slope of the field, nitrogen+sulfur fertilizer increased yields by 2.20 bu/ac, however it was not statistically significant (Table 1). Both Reps, 2 and 3, saw an increase in yield whereas Rep 1 and 4 had reduced yield. Additional trials with more replications should be completed to identify efficacy of treatment over multiple years.

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Applications

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