Download Non-Selective Herbicides - Landscape Weed Management - Slides | CS 053 and more Study notes Agricultural engineering in PDF only on Docsity! Non-Selective Herbicides Scythe Reward Finale Roundup & generic glyphosate herbicides What do they have in common? No soil residual โ POST only Non-selective โ damage most any plants they contact Scythe Contact burn Fast โ within 30 min on a sunny day Nonselective, Postemergent Contact type -- Not translocated Rapid response -- symptoms are visible within 24 hours No soil residual Effective on seedling annual weeds Top kill only on perennials or larger annuals Reward (diquat) Reward โ contact burn symptoms in a few hours to a day Finale not translocated as well as Roundup Finale Roundup Pro Postemergence, non-selective control of annual and perennial weeds Systemic (translocated) No soil residual Be careful around conifers with the new formulation Glyphosate (Roundup, Touchdown and many others) active ingredient: glyphosate non-selective, postemergent systemic (translocated) No soil residual Not toxic to humans or wildlife Fish may be injured by the surfactant Roundup-Pro & others Weed Species % Solution Suggested application timing for best control Perennial grasses quackgrass, Johnsongrass, fescue 1% At boot stage (first indication of flowering) Bermudagrass 2% At boot stage Poison ivy 2% ~ full bloom (E. summer) Kudzu 2% ~ full bloom (L. summer) Greenbriar 3% early spring (5 leaves) English ivy 2% 2-3 new leaves (E. spring) Optimum timing for Roundup-Pro Weed Species % Solution Suggested application timing for best control Trumpetcreeper 1.5% Late summer to early fall Virginia creeper 1% Late summer to 1st fall color Sericea lespedeza 1% Full bloom (mid-summer) Mugwort 2% Late summer to early fall Japanese knotweed 2% Late summer to early fall Annual weeds 0.25-1% Younger is better Optimum timing for Roundup-Pro Roundup injury โ severity depends on species and season of applic. Deciduous plants โ greater damage in late summer / Fall Conifers more sensitive in spring Selective Methods for Applying Non-Selective Herbicides Directed applications: spray to the base of the crop, avoiding contact with foliage and green stems Spray shields may reduce spray drift Directed applications: Wipers: rope, paint roller, or sponge type devices. Just wipe the weeds when they are taller than the ornamentals Selective Methods for Applying Non-Selective Herbicides Directed applications Wipers Clippers: wet clippers in Roundup-Pro and clip the weed Selective Methods for Applying Non-Selective Herbicides
