The purpose of this study is to evaluate how planting depth impacts plant population, emergence and yield and how these factors are further impacted by planting date.

2018 Indiana Soybean Planting Depth Study - Timing

Multi-year data from the Indiana PFR site shows that maximum yields are achieved at a planting depth of 1.5 to 2.0 in. Often times, emerged populations are similar between many of the planting depths, so where is the increased yield coming from? Over the years, we have observed that a large portion of nodules form at the depth of planting. As depths increase, soil temperatures are cooler and more stable, particularly during late summer when nitrogen (N) demand is greatest. Since N fixation is most efficient at a temperature of 72° F, it’s reasonable to speculate that deeper planting depths can effect N fixation and ultimately, yield.

Fall: Disk-Rip, Spring: Field Cultivation | 

Pre: 10 oz. Authority® Assist Post: 1 qt. Roundup PowerMAX®, 6 oz. Clethodim | 

 BECK 2899X2brand | Soil Type Crosby (Silt Loam) | Soil Test Values pH 7.5, O.M. % 2, CEC 14.3 | 