140K vs. 165K Seeding Rate Medium Yield Zone (35 to 55 bu/ac)

Trial Type

Seeding Rate/ Varieties/ Row Spacing, Medium Yield

General Stats

County
Brule
Replications
3
Crop
Soybean
Seed Brand
Asgrow
Variety
AG24X7
Relative Maturity
2.4
Tillage
No-till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
7.5"
Plant Population
140000
Plant Date
02/05/2018
Cover Crop
No Value
Seed Treatment
No Value

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

Asgrow AG24X7 soybeans were planted at 140K and 165K in strips on May 2, 2018 in 7.5 inch rows.

Results

Decreasing the seeding rate from 165K to 140K increased soybean yield by 3.86 bu/ac.  This increase in yield was not significantly different at the 90% confidence level.   A yield change of 6.38 bu/ac would be required for there to be significant differences at the 90% confidence level.

 

 

Acknowledgements:

Funding for this research project was provided by the South Dakota Soybean Research and Promotion Council. The authors would also like to thank the soybean producers who participated in this project.

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