Indiana soybean farmers depend on herbicides (specifically glyphosate) to control the number one pest in soybeans - weeds. Effective herbicide treatments require attention to factors that influence efficacy such as product selection and rate, equipment calibration, and application timing. One factor that's routinely ignored is the quality of the water used to spray the product. Information indicating the influence of time on herbicide and hard water cations interaction is limited, outside of glyphosate. New herbicide resistant trait soybeans will become available, and tank mixes of dicamba or 2,4-D with glyphosate or glufosinate will be beneficial to growers who have glyphosate, ALS or PPO...