Trial Type
Seeding Rate/ Varieties/ Row Spacing
General Stats
Soil Stats
Methodology
Methods and Agronomic Information
The variety Stine 20RD20, was no-tilled in 30” rows on 5/9/15 at 140,000 seeds ac-1. The four treatment strips were 15” rows that were created by double-planting at the same seeding rate per acre (Figure 1). The field received approx. 13.4 in. of rain from June 1 through August 31.
Results
Results
On average, the 15” rows yielded 3 bu ac-1 less than the estimated yield of those same strips if they would have been 30” rows (Table 2). This estimate was calculated from data surrounding both sides of each strip. These findings contradict results from East half of the field, where stover from the previous corn crop was returned, and there was no yield difference between the 15” and 30” rows. Another nearby trial in 2015 where previous corn stover was also returned, showed no significant yield difference between 15” and 30” row spacings as well. On-farm row spacing trials comparing previous residue management practices may be of interest in the future.
