By Mark VanGessel, Extension Weed Specialist; mjv@udel.edu Preemergence herbicides will provide a period of residual weed control, based on rate and incorporation. Typically we can expect 3 to 5 weeks of residual control in most situations. So if our preemergence herbicide application is made 3 to 4 weeks before planting, we can expect weeds starting […]

By Mark VanGessel, Extension Weed Specialist; mjv@udel.edu The label for Sharpen and other Kixor-containing herbicides says not to apply with any other Group 14 (PPO herbicides) or within 30 days of other Group 14 herbicides. Other Group 14 herbicides include flumioxazin (Valor, Valor XLT, Envive, Fierce, etc), Anthem, fomesafen (Reflex, Prefix, Flexstar numerous generic products). […]

By Mark VanGessel, Extension Weed Specialist; mjv@udel.edu This is an article written by Dwight Lingenfelter and Bill Curran from Penn State and modified for Delaware. As more farmers use vertical tillage to manage crop residues or to mellow the seedbed prior to planting (especially soybeans), questions have arisen about possible impacts of using these types […]