For years concerns about herbicide residues have remained. Even if standard cleaning protocol is strictly followed, crop injury from residual herbicides deposited in the spray equipment can still occur. This is especially a concern to soybean crops, which are very sensitive to herbicides like 2,4-D and Dicamba. The concern also limits what herbicides can be used on soybean or if sprayer can be used for operations in soybean fields after use of other herbicides in other crops such as corn and cotton. Even if small amounts can cause damage. Operators of spray equipment are advised to properly clean sprayer equipment between tank loads to avoid any possibility of causing crop injury. Conventional...