Ghantous, Katherine

Sandler, Hilary A.

English

ScholarWorks@UMass Amherst

University of Massachusetts AmherstScholarWorks@UMass AmherstCranberry Chart Book - Management Guide Cranberry Station Outreach and Public ServiceActivities3-30-20182018-2020 Chart Book: Weed at a GlanceHilary A. SandlerUniversity of Massachusetts - Amherst, hsandler@umass.eduKatherine GhantousUMass Amherst, kghantou@umass.eduFollow this and additional works at: https://scholarworks.umass.edu/cranchartPart of the Agriculture CommonsThis Teaching is brought to you for free and open access by the Cranberry Station Outreach and Public Service Activities at ScholarWorks@UMassAmherst. It has been accepted for inclusion in Cranberry Chart Book - Management Guide by an authorized administrator of ScholarWorks@UMassAmherst. For more information, please contact scholarworks@library.umass.edu.Sandler, Hilary A. and Ghantous, Katherine, "2018-2020 Chart Book: Weed at a Glance" (2018). Cranberry Chart Book - ManagementGuide. 271.Retrieved from https://scholarworks.umass.edu/cranchart/271 WEED MANAGEMENT 2018 AT A GLANCE  Prepared by H.A. Sandler and K.M. Ghantous as an addendum to the 2018-2020 Chart Book  UMass Cranberry Station       http://ag.umass.edu/cranberry      508-295-2212 x 25   ALWAYS READ THE LABEL and REFER TO 2018-2020 CHART BOOK   Herbicides Max allowable formulation/A Restricted entry interval (REI) Preharvest interval (PHI) Max number of applications Aim (carfentrazone) Callisto, Explorer, etc. (mesotrione) 6.1 fl oz 16 fl oz 0 days 12 hrs 12 hrs 45 days N/A 2 Casoron 4G (dichlobenil) 100 lb 12 hrs N/A N/A Devrinol (napropamide) 18 lb (DF-XT) or 18 qt (2XT) 24 hrs N/A 1 Evital 5G (norflurazon) 160 lb 12 hrs N/A 1 Poast (sethoxydim) 5 pt 12 hrs 60 days N/A QuinStar 4L (quinclorac) 16.8 fl oz 12 hrs 60 days 2 Roundup (glyphosate) N/A 4 hrs 30 days N/A Select Max, Intne (clethodim) 64 fl oz 24 hrs 30 days N/A Stinger (clopyralid) 16 fl oz 12 hrs 50 days 2 Weedar 64 (restricted use) N/A 48 hrs 30 days 1  PREEMERGENCE (timing may vary depending on weather and location)  Aster, fall panicgrass, cottongrass, crabgrass, cutgrass, ferns, loosestrife, mannagrass, marsh St. Johnswort,                  Casoron mare's tail, NLGR, needlegrass, nutsedge, pitchfork, ragweed, rattlesnakegrass, rushes, smartweed,   sorrel, summergrass, velvetgrass, wild strawberry, woolgrass  Wild bean (if active, spot-treat with Stinger – see below for probable timing)                        Casoron, then Devrinol  Clover                                                Stinger  Dodder                                Casoron, QuinStar  Sphagnum moss                                                        Improve drainage   Barnyardgrass, broadleaf panicgrass, broomsedge, Canada rush, fall panicgrass, cutgrass, dulichium,                              Evital  horsetail, needlegrass, nutsedge, smokegrass, spike rush, summergrass, switchgrass, woolgrass  Dewberries (brambles)                            Late water, fall flood  Barnyardgrass, fall panicgrass, cutgrass, nutsedge, poverty grass, summergrass, etc.                                        Devrinol   POSTEMERGENCE (timing may vary depending on weather and location)   Poverty grass and other true grasses (annual and perennial)                       Poast or Select Max  Ditch weeds (dry ditch sprays only)                                                    Roundup  Dodder                                                                     QuinStar, Callisto, Conc. Callisto spot treatments  Aquatic weeds (off-bog only)                                          Diquat, Rodeo   Wild bean                              Stinger or salt solution  Poison ivy               Conc. Callisto spot treatments      Tall weeds on bogs                               Roundup, Weedar 64  Many broadleaved weeds, including pineweed                                                 Callisto  IN THE FALL AFTER HARVEST  Aster, blue joint, cottongrass, cutgrass, Carex spp., loosestrife,                                    Casoron, Stinger (composite/legume weeds) marsh St. John’s wort, mud rush, NLGR, needlegrass,                                   nutsedge,  ragweed, sphagnum moss, summergrass, woolgrass    Barnyardgrass, Canada rush, fall panicgrass, needlegrass,                                                       Evital  nutsedge. poverty grass (follow by winter sanding), summergrass, switchgrass  Barnyardgrass, fall panicgrass, cutgrass, nutsedge, poverty grass, spike rush                                                              Devrinol*      * The efficacy of fall Devrinol applications for many weeds has not been documented.   Spot-treatment with sprays                                                Roundup WEED MANAGEMENT 2018 AT A GLANCE  Prepared by H.A. Sandler and K.M. Ghantous as an addendum to the 2018-2020 Chart Book  UMass Cranberry Station     http://ag.umass.edu/cranberry    508-295-2212 x 21    ALWAYS READ THE LABEL and REFER TO 2018-2020  CHART BOOK  Suggested amounts of Callisto per gallon of water for spot-treatments Callisto per gallon of water  Solution description Max solution per acre per application 0.8 teaspoon        approximates 4 oz/acre rate   30 gal 1.9 teaspoons       approximates 8 oz/acre rate 30 gal 3 Tablespoons       very concentrated,  for woody weeds like PI 5.3 gal   Suggested amounts of Poast per gallon of water for spot-treatments Spray Solution Volume (gallons) COC  (1%)  Poast Spray Solution AND 1% OR 1.50% 1 1.3 fl oz 1.3 fl oz 1.9 fl oz 3 3.8 fl oz 3.8 fl oz 5.8 fl oz 5 6.4 fl oz 6.4 fl oz 9.6 fl oz 25 2.0 pints 2.0 pints 3.0 pints 50 4.0 pints 4.0 pints 6.0 pints   Suggested amounts of Roundup for spot-treatments Type of application Roundup Rate (for a 48% a.i. product) Wiper 10-20% (1 part glyphosate product to 4-9 parts water) Dry ditch spray 1-1.5 % (2.5-3.8 Tbsp or 38-57 ml per gallon water) Clipper 50-100% (use full strength or dilute by half)   Post-harvest spray 0.4 – 0.7% (3-5.5 tsp or 15-27 ml per gallon water)   IF additives are needed: Surfactant  1 oz (2 tablespoons or 30 ml) per gallon of mixed solution Ammonium sulfate  3 oz (6 tablespoons or 90 ml) per gallon of mixed solution  Roundup Wiping  Solution Strength     Weaker Moderate Strong      Roundup (fl oz)   To make 1 gallon 13 fl oz  17 fl oz  25 fl oz  + enough water make 1 gallon of solution To make 2 liters 7 fl oz  9 fl oz  13 fl oz  enough water make 2 liters of solution  

2018-2020 Chart Book: Weed at a Glance

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2018-2020 Chart Book: Weed at a Glance

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