Planting Date and Seeding Rate Effects on Soybean Yield in Kentucky
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Objective
- Evaluate the effect of planting date and seeding rate on yield, height and lodging of Pioneer® brand soybean varieties grown on productive soils near Owensboro, Ky.
Study Description
| Plot Layout: | 4 rows, 30 feet long | ||||||||||||||||||||||||||||||||||||
| Experimental Design: | RCBD, 4 replications | ||||||||||||||||||||||||||||||||||||
| Number of Locations: | 1 | ||||||||||||||||||||||||||||||||||||
| Factors: | |||||||||||||||||||||||||||||||||||||
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Mid-April Mid-May Late May |
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120,000 seeds/acre 180,000 seeds/acre |
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Results
- Average soybean yield was 8 bu/acre greater at a seeding rate of 180,000 seeds/acre compared to 120,000 seeds/acre.
- Final stands of at least 85,000 plants/acre were generally required to produce maximum yields (data not shown).
- Plant height was reduced and lodging scores generally improved with April plantings compared to May plantings.
- MG 2.8 and 3.0 varieties favored mid-May planting.
- Yields with all other varieties were maximized with April and mid-May plantings.
Means with the same letter are not significantly different based on Tukey's HSD test conducted at the α=0.05 level.
Bars at or above red dotted line are equivalent to the highest yielding treatment based on Tukey's HSD test conducted at the alpha=0.05 level.
PIONEER® brand products are sold subject to the terms and conditions of sale which are part of the labeling and purchase documents. Roundup Ready® is a registered trademark used under license from Monsanto Company. 2013 data are based on average of all comparisons made in one location through November 15, 2013. Multi-year and multi-location is a better predictor of future performance. Do not use these or any other data from a limited number of trials as a significant factor in product selection. Product responses are variable and subject to a variety of environmental, disease, and pest pressures. Individual results may vary.