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

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
200000
Plant Date
14/05/2017
Cover Crop
No Value
Seed Treatment
Fungicide, Insecticide, Inoculant

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

Methodology:

Three strips were planted to 130,000 seeds/acre and compared to the farmer’s more standard seeding rate of 160,000 seeds/acre.

 

Results

Results:

The reduced seeding rate of 130k seeds/acre yielded slightly better on average than the 160K seeding rate in high yielding soybeans (>55 bu/A).  However the yield increase was not significant at the 95% CI.  These results show that lower seeding rates may save farmers costs in parts of their fields.

Refer to reports:

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

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

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: 

Partial 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