160K vs. 200K Seeding Rate (High Yield Zone >55 bu/ac)

Trial Type

Seeding Rate/ Varieties/ Row Spacing, High Yield

General Stats

County
Brookings
Replications
5
Crop
Soybean
Seed Brand
Stine
Variety
20RD20
Relative Maturity
2.0
Tillage
Conventional Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
30"
Plant Population
200000
Plant Date
13/05/2017
Cover Crop
No Value
Seed Treatment
Fungicide, Insecticide, Inoculant

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

METHODOLOGY:

An increased seeding rate of 200k seeds/acre was compared to a more-typical seeding rate of 160k seeds/acre.

 

Results

RESULTS:

The increased seeding rate of 200k seeds/acre yielded 2.20 bu/acre less than the more-typical seeding rate of 160k seeds/acre.  However, this lower yield was not statistically significant at the 95% confidence interval because yield loss didn’t exceed 4.33 bu/acre.

refer to reports:

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

Brookings County, 2017, 200K vs. 180K Seeding Rate (Medium Yield Zone 35-55 bu/A)

https://onfarmresearch.sdsoybean.org/archives/reports/200-vs-180-k-seeding-rate-medium-yield-zone-35-55-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.

Rainfall

Temperature

Applications

Fertilizer Applications

Insecticide Applications

Fungicide Applications

Herbicide Applications