2017 Southern Illinois Soybean Planting Date Study
To determine the optimum planting date window by planting multiple dates throughout the growing season.
Planting early can be risky when considering potential frost events, Sudden Death Syndrome, and seedling blights. However, with modern advancements in soybean varieties and seed treatments, we have been able to overcome these challenges across the Midwest. When planting after mid-May, we have seen a significant reduction in soybean yields.
4-YEAR OPTIMUM PLANTING DATE WINDOW
Planted Various | Harvested Various | Population 140,000 Seeds/A. | Row Width 15 in. | Previous Crop Corn | Tillage Fall: Vertical-Till/In-Line Rip, Spring: Vertical-Till | Herbicides Pre: 3 oz. Zidua®, 1 qt. Roundup PowerMAX® Post: 60 oz. Warrant® Ultra, 1 qt. Roundup PowerMAX®, 4 oz. Section® Three | Insecticides Escalate™ | Soil Type Ebbert (Silt Loam) | Soil Test Values pH 6.1, O.M. % 2.2, CEC 8.2 | Percent Base Saturation Ca 64.1, Mg 19.3, K 1.9, H 14.7 | Parts Per Million P 15, K 61, S 5, Zn 1.8, Mn 39, B 0.2
*®XL, Optimum, and AcreMax are registered trademarks of Pioneer. XL® brand seed is distributed by Beck’s Superior Hybrids, Inc.