INTERLINE® 6020427 Glufosinate-Ammonium l Herbicide 2.5 gals. INTERLINE is a non-selective herbicide for the control of existing weeds. INTERLINE swiftly and effectively eliminates some of the most challenging glyphosate-resistant weeds, including Palmer amaranth, waterhemp, marestail and ragweed. Using a unique mode of action, INTERLINE inhibits glutamine production in the weeds which leads to a breakdown in photosynthesis. INTERLINE can be used as a burndown treatment in key labeled crops, but its showcase application is as an over-the-top treatment for weed control in glufosinate-tolerant crops including LibertyLink® varieties.