The purpose of this study is to compare the use of potassium and sulfur products, applied through the wings of Precision Planting’s FurrowJet, to determine their impact on yield and profitability.

2018 Central Illinois Soybean Potassium and Sulfur Study - Soybean after Soybean

The yield increase and positive returns on investment in 2018 most likely came from the benefits of sulfur (S) in the product. Soybeans require 0.18 lb. of sulfur/Bu., and with the mobility of S in the soil, adequate levels to achieve maximum yields may not be available to the plant in many situations. Sulfur uptake in soybeans typically occurs after the R1 growth stage, so adjusting the timing of your S applications to later in the season may increase your yields even more than the in-furrow applications.

 Fall: Chisel, Spring: Field Cultivation | 

 Pre: 1 qt. Authority® Elite, 1 qt. Roundup PowerMAX® Post: 4.5 oz. Anthem® Maxx, 1 qt. Liberty® | 

Korrect™ (3-0-20), Feast® Side-Kick® 0-0-25 w/17S

2021 Iowa Soybean SINGULATION STUDY 15 IN. ROWS

2021 Iowa Soybean STARTER FERTILIZER STUDY 2X2X2