Herbicide Effectiveness on Weeds in Wheat (West of the Cascades)

Weed Family thifensulfuron+ tribenuron chlorsulfuron+ metsulfuron 2,4-D MCPA dicamba bromoxynil metribuzin diuron 2, 4-D+ clopyralid prosulfuron metsulfuron clopyralid Amaranth Amaranth, Powell G G G G G F — G — — — — Amaranthus powellii Pigweed, redroot G G G G G F — G — G G G Amaranthus retroflexus Borage Fiddleneck, coast G G F F — G — G — — — — Amsinckia intermedia Buckwheat Buckwheat, wild G G F F G G F F G — G G Polygonum convolvulus Dock, broadleaf G G G F G P — F — — — — Rumex obtusifolius Dock, curly Rumex crispus G G G F G P — F G — — G Knotweed, prostrate G G F P G F F F — — G — Polygonum aviculare Ladysthumb — G G F G G P F F — G G Polygonum persicaria Sorrel, red — F P P G P — F G — — G Rumex acetosella Buttercup Buttercup, corn — — G G G — — — — — — — Ranunculus arvensis Buttercup, creeping G G F G G — — — — — — — Ranunculus repens Buttercup, western field — — G G G — — — — — — — Ranunculus occidentalis Carrot Bur chervil G G P G — P — P — — — — Anthriscus scandicina Carrot, wild Daucus carota G G F F P F — P — P-F P-F — Cucumber Cucumber, western wild — — P P P P P P — — — — Marah oreganus Evening Primrose Willowweed, panicle — — P P — — G G — — — — Epilobium paniculatum Figwort Mullein, common G — P P — — — — — — — — Verbascum thapsus Mullein, moth — — F P — — — — — — — — Verbascum blattaria

Speedwell, birdseye — F P P P F G P — — — — Veronica persica

Speedwell, ivyleaf G F P P P F G P — — — — Veronica hederifolia

G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

PNW Weed Management Handbook C44 Weed Family thifensulfuron+ tribenuron chlorsulfuron+ metsulfuron 2,4-D MCPA dicamba bromoxynil metribuzin diuron 2, 4-D+ clopyralid prosulfuron metsulfuron clopyralid Speedwell, purslane G G F P P — G P — — — — Veronica peregrina Toadflax, yellow — — P P — — — — — — — — Linaria vulgaris Geranium Filaree, redstem G G F F — P G F — — G — Erodium cicutarium Geranium, cutleaf G G P G — — G G — — — — Geranium dissectum Geranium, dovefoot — G P P — — G G — — — — Geranium molle Goosefoot Lambsquarters, common F G G G G G F G — G G G Chenopodium album Garlic, wild Allium vineale G F F P F P P P — — — — Onion, wild Allium amplectens G F F P F P P P — — — — Madder Bedstraw, catchweed F F P P F F P P — — — — Galium aparine Bedstraw, corn — — P P — F P P — — — — Galium tricorne Madder, field — — P P — — — — — — — — Sherardia arvensis Mallow Mallow, common G G F P — P P P — — — — Malva neglecta Mallow, dwarf — — F P — — — — — — — — Malva rotundifolia Mallow, little — — F P — — — — — — — — Malva parviflora Mint Deadnettle, red G G P F — P G G — — — — Lamium purpureum Healall — — G P — — — — — — — — Prunella vulgaris Henbit G G P F — P G G — G G — Lamium amplexicaule Morningglory Bindweed, field P P F F F P P P — F-G — — Convolvulus arvensis Bindweed, hedge P — G G G P P P — — — — Convolvulus sepium Mustard Bittercress, little G G G G — F G G — — — — Cardamine oligosperma Mustard, black G G G G P G G G — G G — Brassica nigra

G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

PNW Weed Management Handbook C45 Weed Family thifensulfuron+ tribenuron chlorsulfuron+ metsulfuron 2,4-D MCPA dicamba bromoxynil metribuzin diuron 2, 4-D+ clopyralid prosulfuron metsulfuron clopyralid Mustard, Indian G G G G P P — G — G G — Brassica juncea Mustard, wild G G G G P F G G — G G G Brassica kaber Radish, common G G G G P F G G — — — — Raphanus sativus Radish, wild G G G G P F G G — — — G Raphanus raphanistrum Rocket, yellow G G G G — P G G — — — — Barbarea vulgaris Shepherdspurse G G G G — F G G — G — G Capsella bursa-pastoris Turnip, wild G G G G P G G G — — — — Brassica campestris Wort, whitlow — G — — — — G G — — — — Draba verna Nightshade Nightshade, black P P F F — — P G G — — G Solanum nigrum Nightshade, hairy P P F F — — P G G — — G Solanum sarrachoides Pea Vetch, common Vicia sativa G G G G G F P P G — — G Vetch, hairy Vicia villosa G F G G G F P P — — — G Vetch, narrowleaf — — G F G F P P — — — G Vicia angustifolia Phlox Gilia, fieldGilia capitata — F — — — — G G — — — — Gilia, skunkweed — G — — — — G G — — — — Navarretia squarrosa Gilia, woolly — — — — — — G G — — — — Navarretia intertexta Pink Bouncing bet — — P P — P P P — — — — Saponaria officinalis Chickweed G G F P G P G G — G G — Stellaria media Chickweed, mouseear G G F P F P G G — — — — Cerastium vulgatum Chickweed, sticky — G P P F P G G — G G — Cerastium viscosum Knawel — — P P G P G G — — — — Scleranthus annuus Spurry, corn Spergula arvensis — G P F — P G G — — — — Plantain Plantain, buckhorn — — G G P — — P — — F G Plantago lanceolata

G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

PNW Weed Management Handbook C46 Weed Family thifensulfuron+ tribenuron chlorsulfuron+ metsulfuron 2,4-D MCPA dicamba bromoxynil metribuzin diuron 2, 4-D+ clopyralid prosulfuron metsulfuron clopyralid Poppy Poppy, California — — G G — — — — — — — — Eschscholtzia californica Primrose Pimpernel, scarlet — G G G — P G G — — — — Anagallis arvensis Purslane Minerslettuce G G P P — F G G — — — — Montia perfoliata Purslane, redmaids rock — — G G — — G G — — — — Calandrinia ciliata Rose Burnet, small — — — — — — — G — — — — Sanguisorba minor Cinquefoil, silverweed — — P P — — — P — — — — Potentilla anserina Rush Toadrush — — G G — — — G — — — — Juncus bufonius Sunflower Artichoke, Jerusalem — — G G G P P — G — — G Helianthus tuberosus Catsear, spotted G G G G — — — — — — — — Hypochoeris radicata Chicory — — G G — — — — — — — — Cichorium intybus Cocklebur, heartleaf — — G F G — — G G — — — Xanthium strumarium Cornflower — F G F — F — G G — — G Centaurea cyanus Cudweed, low — — P P — — — — — — — — Gnaphalium uliginosum Cudweed, purple — G P P — — — — — — — — Gnaphalium purpureum Daisy, oxeye — — F F — — — F G — — G Chrysanthemum leucanthemum Dandelion, common G G G G — P — — G — F-G G Taraxacum officinale Groundsel, common G G P P — G F F G — G G Senecio vulgaris Hawkbit, rough — — G G — — — — — — — — Leontodon nudicaulis Hawksbeard, bristly — G P P P — G G G — — G Crepis setosa Lettuce, prickly G G G G G F G G G G F-G G Lactuca serriola Lettuce, willowleaf — — G G — — — — — — — — Lactuca saligna

G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

PNW Weed Management Handbook C47 Weed Family thifensulfuron+ tribenuron chlorsulfuron+ metsulfuron 2,4-D MCPA dicamba bromoxynil metribuzin diuron 2, 4-D+ clopyralid prosulfuron metsulfuron clopyralid Mayweed (Dog fennel) G G F P G G F G G G G G Anthemis cotula Nipplewort G G P P — G — G — — — — Lapsana communis Pineappleweed G G F P F G — F G — — G Matricaria matricarioides Salsify, common — — G — F — — — — — — — Tragopogon porrifolius Salsify, meadow — G G — F — — — G — — G Tragopogon pratensis Salsify, western — — G — F — — — — — Tragopogon major Sowthistle, annual G G G G G F G G G — — G Sonchus oleraceus Sowthistle, spiny G — G G G F G G — — Sonchus asper Tarweed, cluster — — — — — G — — — — — — Madia glomerata Tarweed, Chilean — — P P — G — — — — — — Madia sativa Thistle, bull F F G G — — — G — — — — Cirsium vulgare Thistle, Canada G G F F F P P P G F — G Cirsium arvense Yarrow, common — — P P F P — P — — — — Achillea millefolium

G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

Grasses + chlorsulfuron metsulfuron imazamethabenz diclofop fenoxaprop triallate diuron flucarbazone metribuzin Barnyardgrass (Echinochloa crus-galli) P P G G P G G F Blackgrass (Alopecurus myosuriodes) G P G G P P — G Bluegrass, annual (Poa annua) F P P P P G — F Brome, California (Bromus carinatus) P P P* P P P P P Brome, ripgut (Bromus rigidus) P P G* P F P P F Cheat (Bromus secalinus) P P F* P F P P F Chess, soft (Bromus mollis) P P F* P F P — F Fescue, rattail (Vulpia myuros) P P P P P G — G Foxtail, green (Setaria viridis) P P G G P G G P Oat, wild (Avena fatua) P G G G F P G P Ryegrass, Italian (Lolium multiflorum) F P G P F F G F Witchgrass (Panicum capillare) P P F P P F G F G = good (85%-100%) F = fair (70%-84%) P = poor (0-69%) (—) = limited information

PNW Weed Management Handbook C48