180 vs. 200K Seeding Rate (High Yield Zone >55bu/Acre)

Trial Type

Seeding Rate/ Varieties/ Row Spacing, High Yield

General Stats

County
Brookings
Replications
3
Crop
Soybean
Seed Brand
No Value
Variety
14X7
Relative Maturity
1.4
Tillage
Conventional Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
30"
Plant Population
180000
Plant Date
14/05/2017
Cover Crop
No Value
Seed Treatment
No Value

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

Methodology:

Three strips were planted to an average of 180,000 seeds/acre and compared to an increased seeding rate of 200,000 seeds/acre.

 

Results

Results:

The 180,000 seeds/acre rate yielded 4.80 bu/ac better than the 200,000 seeds/acre rate in high yielding soybeans (>55 bu/ac), but the increase was not significant at the 95% confidence interval (CI).  The results shows the farmer may benefit from the reduced seeding rate.

refer to reports: 

Brookings County, 2017, 160K vs. 200K Seeding Rate (High Yield Zone >55bu/A) 

https://onfarmresearch.sdsoybean.org/archives/reports/160-vs-200k-seeding-rate-high-yield-zone-55-buac

Brookings County, 2017, 130K vs. 160K Seeding Rate (High Yield Zone >55 bu/A)

https://onfarmresearch.sdsoybean.org/archives/reports/130k-vs-160k-seeding-rate-high-yield-zone-55-bua

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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