Seeding Rate Reduced from 140k to 110k Seeds/ Acre

Trial Type

Seeding Rate/ Varieties/ Row Spacing, Medium Yield

General Stats

County
Brookings
Replications
2
Crop
Soybean
Seed Brand
Asgrow
Variety
AG18XF1
Relative Maturity
1.8
Tillage
Conventional Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
30"
Plant Population
140000
Plant Date
21/05/2022
Cover Crop
No Value
Seed Treatment
No Value

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

This field was in Brookings County, South Dakota. The soybean variety AG18XF1 was planted in 30-inch rows on May 21, 2022, at 140k seeds/ac. Two 60 ft. wide strips were planted at 110k seeds/ac to evaluate the potential of lower seeding rates. Soybeans were harvested in 30 ft. wide passes on September 27, 2022. The field was classified into three different yield zones: low (less than 35 bu/ac), medium (35-55 bu/ac), and high (more than 55 bu/ac). This report evaluates medium yield zones. UAV image was collected on August 17, 2022, and an NDVI map was generated for plant health assessment across the field.

Results

Reducing seeding rates from 140k to 110k/acre had no effect on yields or NDVI. Additional seeding rate trials would be beneficial in future years to continue evaluating this cost saving practice.

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