To compare soybean yield performance under three different row widths.
| Cooperator: | Dennis Baker |
| County of Site: | Darke |
| Nearest Town: | Greenville |
| Major Soil Type: | Patton |
| Drainage: | Subsurface |
| Irrigation: | None |
| Tillage: | No-till |
| Previous Crop: | Corn |
| Soil Test: | pH 6.3 P 38 K 157 |
| Fertilizer: | 4/30/97 broadcast 100# 0-46-0, 100# 0-0-60 |
| Herbicide: | 5/23/97 - 1 qt Roundup, 1.5 qt Squadron, 3/4 pt. Prowl |
| Variety: | Sandusky |
| Planting Date: | 5/16/97 |
| Harvest Date: | 10/7/97 |
Soybean row width treatments included 30" rows, double-back to make 15" rows, and drilled for 7" rows.
Seeding rates: 30" - 156,000 seeds/A; 15" - 160,000 seeds/A; 7" - 180,000 seeds/A. 30" and 15" plots replicated four times in field length strips; 7" replicated two times in plots twice the width of the other row-width treatments.
| Row Width | Yield | Comparisons | lsd 5% | |
|---|---|---|---|---|
| 30" | 37.45 bu./A | 30" vs. 15" | 6.23 bu/A | No sig. difference |
| 15" | 41.14 bu./A | 30" vs. 7" | 7.90 bu/A | No sig. difference |
| 7" | 40.62 bu./A | 15" vs. 7" | 9.20 bu/A | No sig. difference |
|
Note: Since the treatments varied in number of replications, a separate
lsd is needed to compare each pairwise comparison. Coefficient of variation equaled 11.1%. | ||||
Weed control was fair and spread evenly though the experimental plots. Growing conditions were relatively dry in July and August.
Submitted by:
Dennis Baker
Ohio State University Extension - Darke County
700 Wayne St.
Greenville, Oh 45331
937-548-5215
baker.5@osu.edu