iowa state university weed science program - weed control...

Weed Science Program 2015 Weed Control Results Welcome to the 2015 Weed Control Results for the Iowa State University Weed Science Program. Included in the report are data from the individual studies and supplemental information including site characteristics and environmental conditions. We hope you find the report format and contents convenient and useful.

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Program personnel: Micheal D. K. Owen, university professor, agronomy associate chair and extension weed specialist Robert G. Hartzler, professor and extension weed specialist Damian D. Franzenburg, agricultural research specialist James M. Lee, agricultural research specialist Iththiphonh A. Macvilay, research associate Brady S. North, research associate Contact information: Weed Science Program Department of Agronomy 3218 Agronomy Hall Iowa State University Ames, IA 50011 Office: (515) 294-5936 FAX: (515) 294-3120

Copyright 1997-2015 Iowa State University Research Foundation, Inc. All rights reserved.

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Caveat The information in this report is not to be used for publication without the express consent of the Weed Science Program Project Leader. Information contained within does not constitute a recommendation or endorsement of product use. Recommendations for weed control in field crops are available from Iowa State University Extension, Iowa State University, Ames, Iowa. Acknowledgements Special acknowledgment and thanks are due to the following for their support of the Weed Science Research Program, Department of Agronomy, Iowa State University:

ADAMA Agricultural Solutions, Ltd.

AMVAC Chemical Corporation

BASF Corporation

Bayer CropScience

Committee for Agricultural Development

Dow AgroSciences

DuPont Crop Protection & DuPont Pioneer

FMC Corporation

Gowan Company, LLC.

Iowa State University Crop Performance Testing

Iowa State University Extension

Iowa State University Research Farms

ISK Biosciences Corp.

Monsanto Company

Nufarm Americas, Inc.

Syngenta Crop Protection, Inc.

United Phosphorus, Inc.

United Suppliers, Inc.

Valent USA Corporation

Winfield Solutions, LLC

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Abbreviations Results contained in the ISU Weed Control Results report are generated mostly by Agriculture Research Manager (ARM) software which uses various abbreviations for treatment, application timing, crop, weed, and observation information. Treatment and application information Abbreviation Description % v/v Percent volume of product per volume mix basis % w/v Percent weight of product per volume mix basis ATPLAN At planting EPOST Early postemergence timing EPP Early preplant timing FL OZ/A Fluid ounces product per acre LB AE/A Pounds acid equivalent per acre LB AI/A Pounds active ingredient per acre LB/100 GAL Pounds dry product per 100 gallons mix LB/A Pounds product per acre LPOST Late postemergence timing MPOST Mid-postemergence timing OZ AI/A Ounces active ingredient per acre OZ WT/A Ounces dry product per acre OZ/A Ounces product per acre POST Postemergence timing PRE Preemergence timing PT/A Pints material per acre QT/A Quarts material per acre SPOST Sequential postemergence timing Crop and weed species information Abbrevi-Bayer Code Common name Genus species ABUTH Velvetleaf Abutilon theophrasti AMATA Common/tall waterhemp Amaranthus tuberculatus, A. rudis or

A. tamariscinus AMBEL Common ragweed Ambrosia artemisiifolia CHEAL Common lambsquarters Chenopodium album ERBVI Woolly cupgrass Eriochloa villosa ERICA Canada horseweed Conyza Canadensis GLXMA Soybean Glycine max GRASS Mix of giant foxtail & Setaria faberi & woolly cupgrass Eriochloa villosa IPOHE Ivyleaf morningglory Ipomoea hederacea

Abbreviations (continued) Crop and weed species information Abbrevi-Bayer Code Common name Genus species LITAR Corn gromwell Buglossoides arvensis PANDI Fall panicum Panicum dichotomiflorum POLPY Pennsylvania smartweed Persicaria Pensylvanica SETFA Giant foxtail Setaria faberi SOLPT Eastern black nightshade Solanum ptycanthum TAROF Common dandelion Taraxacum officinale XANST Common cocklebur Xanthium strumarium ZEAMD Corn Zea mays indentata Observation information Visual estimates of % crop phytotoxicity and weed control are compared to an untreated control and made on a 0 to 100 rating scale (0 percent = no crop phytotoxicity or weed control; 100 percent = complete crop death or weed control). Corn stand for 30 inch row spacing is measured at 17.5 row feet and is equivalent to 1/1000th acre. Abbreviation Description BU/A Bushels per acre DA-A Days after application timing code A, B, etc. EMERGE Emergence GREENU Green up (percent green tissue) PESINC Pest incidence PHYCHL % phytotoxicity crop injury chlorosis PHYGEN % phytotoxicity general crop injury PHYLCU % phytotoxicity crop injury leaf curl PHYNEC % phytotoxicity crop injury necrosis PHYSTU % phytotoxicity crop injury stunting PRESSU % of total weeds per plot ROOTLDG Root lodging STALKLDG Stalk lodging STAOBJ Stand counts YIELD Crop yield

Products used in 2015 Research Program Commercial Name or Common Name or Experimental Number Experimental Number Company

Herbicide

2,4-D Amine 3.8 SL (lb ae) 2,4-D amine Winfield Solutions, LLC 2,4-D LV4 3.8 SL 2,4-D ester Winfield Solutions, LLC Abundit Extra 3 SL (lb ae) Glyphosate DuPont Armezon 2.8 SC Topramezone BASF Corporation Assure II 0.88 EC Quizalofop P-ethyl DuPont AAtrex 4L SC Atrazine Syngenta Balance Flexx 2 SC Isoxaflutole & safener Bayer CropScience Cadet 0.91 EC Fluthiacet-methyl FMC Corporation Callisto 4 SC Mesotrione Syngenta CHA-060 - Cheminova/FMC Corporation CHA-2745 - Cheminova/FMC Corporation CHA-2790 - Cheminova/FMC Corporation Cheetah 2.34 L Glufosinate Nufarm Inc. Cinch 7.64 EC S-metolachlor & safener Dupont Clarity 4 SL (lb ae) Dicamba BASF Corporation Clash 4 L (lb ae) 2,4-D Nufarm Inc. Cobra 2 EC Lactofen Valent Cornerstone 5 Plus (lb ae) Glyphosate Winfield Solutions, LLC Credit Extreme 4.5 SL (lb ae) Glyphosate Nufarm Inc. Dawn Fomesafen Cheminova/FMC Corporation Dicamba 70 WG Dicamba DuPont DiFlexx 4 SC (lb ae) Dicamba & safener Bayer CropScience DPX-UUH75 2.9 SL Dicamba DuPont Dual Magnum 7.62 EC S-metolachlor Syngenta Dual II Magnum 7.64 EC S-metolachlor Syngenta Durango DMA 4 SL (lb ae) Glyphosate Dow AgroSciences Flexstar 1.88 SL Fomesafen Syngenta FirstRate 84 WG Cloransulam-methyl Dow AgroSciences Gangster FR 84 WG Cloransulam-methyl Valent Glory 75 WG Metribuzin Adama Glyfos X-TRA 3 SL (lb ae) Glyphosate Cheminova/FMC Corporation Harass Thifensulfuron-methyl Cheminova/FMC Corporation Harmony SG 50 Thifensulfuron-methyl DuPont Harness 7 EC Acetochlor & safener Monsanto Impact 2.8 SC Topramezone AMVAC Chemical Interline 2.34 L Glufosinate United Phosphorus, Inc. KFD 135-02 - United Phosphorus, Inc. KFD 143-03 - United Phosphorus, Inc.

Products used in 2015 Research Program (continued) Commercial Name or Common Name or Experimental Number Experimental Number Company

Herbicide

Laudis 3.5 SC Tembotrione & safener Bayer CropScience Liberty 280 2.34 SL Glufosinate Bayer CropScience Metribuzin 75 DF Metribuzin Adama NUP-15011 - Nufarm Inc. Outlook 6 EC Dimethenamid-P BASF Corporation Panther 51 WG Flumioxazin Nufarm Inc. Outflank 51 WG Flumioxazin Adama Parallel 7.8 EC Metolachlor Adama Princep 4L Simazine Syngenta Prowl H2O 3.8 EC Pendimethalin BASF Corporation Pursuit 2 AS Imazethapyr ammonium salt BASF Corporation Reflex 2 SL Fomesafen Syngenta Rumble 1.88 SL Fomesafen Adama Roundup PowerMAX 4.5 SL (lb ae) Glyphosate Monsanto Satellite 3.8 L Pendimethalin United Phosphorus, Inc. Sencor 75 DF Metribuzin Valent Sharpen 2.85 SC Saflufenacil BASF Corporation Spartan 4 F Sulfentrazone FMC Corporation Surpass NXT 7 EC Acetochlor Dow AgroSciences SYNA20540 - Syngenta Tolpyralate 3.33 SC Tolpyralate ISK Biosciences Corp. Touchdown Total 4.17 SL (lb ae) Glyphosate Syngenta TriCor 75 DF Metribuzin United Phosphorus, Inc. Ultra Blazer 2 SL Acifluorfen United Phosphorus, Inc. V-10404 3.02 SC - Valent V-10405 3.53 EW - Valent Valor SX 51 WG Flumioxazin Valent Warrant 3 CS Acetochlor Monsanto Weedar 64 3.8 SL (lb ae) 2,4-D amine Nufarm Inc. Zidua SC 4.17 Pyroxasulfone BASF Corporation Zidua 85 WG Pyroxasulfone BASF Corporation

Herbicide Prepackage Mixtures Acuron 3.44 ZC S-metolachlor & atrazine & mesotrione & Syngenta bicyclopyrone Anthem 2.15 SE Pyroxasulfone & fluthiacet-methyl FMC Corporation Anthem ATZ 4.5 SE Atrazine & pyroxasulfone & fluthiacet-methyl FMC Corporation Anthem Maxx 4.3 SC Pyroxasulfone & fluthiacet-methyl FMC Corporation


Herbicide Prepackage Mixtures

Armezon PRO Dimethenamid-P & topramezone BASF Corporation Authority Assist 4 SC Sulfentrazone & imazethapyr FMC Corporation Authority Elite 7 SC Sulfentrazone & s-metolachlor FMC Corporation Authority First DF 70 Sulfentrazone & cloransulam-methyl FMC Corporation Authority MTZ 45 DF Sulfentrazone & metribuzin FMC Corporation Authority XL 70 WG Sulfentrazone & chlorimuron-ethyl FMC Corporation BAS 961 3.5 CS - BASF Corporation Basis Blend 30 WG Rimsulfuron & thifensulfuron-methyl DuPont Bicep Lite II Magnum 6 SC Atrazine & s-metolachlor Syngenta Boundary 6.5 EC S-metolachlor & metribuzin Syngenta Breakfree NXT ATZ 5.6 SC Acetochlor & atrazine DuPont Breakfree NXT Lite 6 SC Acetochlor & atrazine DuPont Broadaxe XC 7 EC Sulfentrazone & S-metolachlor Syngenta Callisto GT 4.18 SC (lb ae) Glyphosate & mesotrione Syngenta Callisto Xtra 3.7 SE mesotrione & atrazine Syngenta Canopy 75 DG Metribuzin & chlorimuron-ethyl DuPont Canopy EX 29.5 WG Chlorimuron-ethyl & Tribenuron-methyl DuPont Capreno 3.45 SC Tembotrione & thiencarbazone-methyl Bayer CropScience Cheetah Max 3 L Fomesafen & glufosinate Nufarm Inc. Cinch ATZ 5.5 EC Atrazine & s-metolachlor DuPont Corvus 2.63 SC Isoxaflutole & thiencarbazone-methyl Bayer CropScience Crusher 50 WG Rimsulfuron & thifensulfuron-methyl Cheminova/FMC Corp. Enlite 47.86 DG Chlorimuron-ethyl & flumioxazin & DuPont thifensulfuron-methyl Envive 41.3 DG Chlorimuron-ethyl & flumioxazin & DuPont thifensulfuron-methyl Fierce 76 WG Flumioxazin & pyroxasulfone Valent Fierce XLT 62.41 WG Chlorimuron & flumioxazin & pyroxasulfone Valent Flexstar GT 3.29 SL Fomesafen & glyphosate Syngenta Flexstar GT 3.5 2.82 SL (lb ae) Fomesafen & glyphosate Syngenta GF-3471 - Dow AgroSciences Halex GT 4.39 CS S-metolachlor & glyphosate & mesotrione Syngenta Harness Xtra 5.6 L Acetochlor & atrazine Monsanto Harness Xtra 6 SE Acetochlor & atrazine Monsanto Harrow 75 WDG Rimsulfuron & thifensulfuron-methyl Cheminova/FMC Corp. Instigate 45.84 WG Rimsulfuron & mesotrione DuPont Intimidator 4.81 L S-Metolachlor & metribuzin & fomesafen Loveland Laudis Flexx 1.53 SC Tembotrione & dicamba & safener Bayer CropScience Lexar EZ 3.7 SE S-metolachlor & atrazine & Mesotrione Syngenta


Herbicide Prepackage Mixtures Lumax 3.95 SE S-metolachlor & atrazine & mesotrione Syngenta Lumax EZ 3.67 ZC S-metolachlor & atrazine & mesotrione Syngenta Marvel 3 SC Fluthiacet-methyl & fomesafen FMC Corporation Milita - Adama NUP-14008 - Nufarm Inc. NUP-15008 - Nufarm Inc. OpTill 68 WG Saflufenacil & imazethapyr BASF Corporation OpTill PRO Saflufenacil & imazethapyr (0.68 lb active BASF Corporation

ingredient-dry) dimethenamid-P (6.0 lb active ingredient-liquid) Panoflex 50 SG Tribenuron-methyl & thifensulfuron-methyl DuPont Prefix 5.29 EC S-metolachlor & fomesafen Syngenta Prequel 45 DF Rimsulfuron & isoxaflutole DuPont Pummel 5.25 ME Metolachlor & imazethapyr ammonium Adama Ransom 68.7 WG - Adama Realm Q 38.75 DF Rimsulfuron & mesotrione & safener DuPont Revulin Q 51.2 WG Nicosulfuron & mesotrione & safener DuPont Rowel FX 40.3 WG Flumioxazin & chlorimuron-ethyl Monsanto Spitfire 3.57 L (lb ae) Dicamba & 2,4-D Nufarm Inc. Solstice 4 SC Fluthiacet-methly & mesotrione FMC Corporation Sonic 70 DF Sulfentrazone & cloransulam-methyl Dow AgroSciences Statement 5.25 EC Metolachlor & fomesafen Cheminova/FMC Corp. Status 56 WG Sodium salt of diflufenzopyr & BASF Corporation

sodium salt of dicamba Storm 2 EC Bentazon & acifluorfen United Phosphorus, Inc. SureStart II 4.25 SE Acetochlor & flumetsulam & clopyralid Dow AgroSciences Surveil 48 WG Flumioxazin & Cloransulam-methyl Dow AgroSciences Tailwind 6.5 EC Metolachlor & metribuzin Adama Torment 2.5 ME Fomesafen & imazethapyr Adama Trivence 61 DG Chlorimuron ethyl & metribuzin & flumioxazin DuPont Valor XLT 40.3 WG Flumioxazin & chlorimuron-ethyl Valent Verdict 5.57 EC Saflufenacil & dimethenamid-P BASF Corporation Vise 5.4 ME Metolachlor & fomesafen Adama Warrant Ultra Acetochlor & fomesafen Monsanto Zemax 3.67 L S-metolachlor & mesotrione Syngenta


Fungicides Aproach 2.08 L Picoxystrobin DuPont Stratego YLD 4.18 L Prothioconazole & Trifloxystrobin Bayer CropScience

Additives, Fertilizers & Classification

AG13063 Water conditioning adjuvant Winfield Solutions, LLC AG14039 - Winfield Solutions, LLC AMS (Ammonium sulfate) Sprayable ammonium sulfate American Plant Food Class Act NG Water conditioner/non-ionic surfanctant blend Winfield Solutions, LLC COC (Premium Crop Oil Concentrate) Oil-surfactant adjuvant Winfield Solutions, LLC Destiny HC High surfactant oil concentrate Winfield Solutions, LLC HSOC (Superb HC) High surfactant oil concentrate Winfield Solutions, LLC Induce Non-ionic wetter/spreader adjuvant Helena Chemical Co. Interlock Deposition agent Winfield Solutions, LLC Premium MSO Modified vegetable oil and surfactant blend Helena Chemical Co. MSO (Succeed Ultra) Modified vegetable oil and surfactant blend United Suppliers NIS (Preference) Non-ionic surfactant/penetrant Winfield Solutions, LLC N-Pak AMS Liquid Liquid water conditioning agent Winfield Solutions, LLC UAN 28% Urea ammonium nitrate United Suppliers

Weather Data Year 2015

Study locations

Agronomy Research Farms, Ames, IA Northeast Research and Demonstration Farm, Nashua, IA

Precipitation data was collected manually by personnel at Iowa State University Research Farms. Air and soil temperature data were obtained from the Iowa Environmental Mesonet web site, Iowa State University, Department of Agronomy, Crop, Soil, and Environmental Sciences. URL address:

http://mesonet.agron.iastate.edu/agclimate/hist/daily.php

soil precip soil precip soil precip soil precip soil precipDate max min avg inches max min avg inches max min avg inches max min avg inches max min avg inches

1 82 42 51 0.00 70 42 57 0.00 72 48 61 0.00 75 57 73 0.00 89 63 82 0.002 65 48 53 0.65 71 48 57 0.00 71 53 62 0.15 70 54 69 0.00 89 68 83 0.003 48 28 46 0.00 83 55 63 0.45 79 59 64 0.00 80 55 72 0.00 81 60 83 0.004 65 30 45 0.00 68 57 62 0.55 81 60 66 0.00 82 55 75 0.00 80 60 80 0.005 72 44 51 0.00 74 57 62 0.00 85 64 69 0.00 85 60 75 0.00 78 64 78 0.006 56 45 50 0.00 76 61 63 0.00 75 62 68 0.80 76 63 73 1.90 80 62 78 0.007 51 41 47 0.00 76 62 62 0.10 83 65 70 0.00 70 53 69 0.00 86 67 81 0.008 51 41 46 0.00 67 53 61 0.00 86 60 70 0.00 72 52 68 0.00 84 68 80 0.009 49 33 46 0.00 72 46 61 0.00 96 62 72 0.00 79 55 71 0.00 82 67 78 5.10

10 55 35 44 1.20 68 56 61 0.35 88 68 76 0.00 80 59 74 0.00 81 63 76 0.0011 72 33 47 0.00 56 44 55 0.00 74 62 70 1.40 83 67 74 0.80 83 62 76 0.0012 72 46 52 0.35 66 40 54 0.00 66 60 67 0.00 91 71 79 0.00 84 62 79 0.0013 64 44 53 0.00 71 43 57 0.00 76 63 69 0.00 92 70 84 0.00 84 60 79 0.0014 70 40 52 0.00 60 51 56 0.80 81 67 72 0.00 88 69 84 0.00 87 67 82 0.0015 68 43 54 0.00 73 55 60 0.00 74 61 71 0.90 80 67 80 0.00 85 64 83 0.0016 74 51 58 0.00 80 62 64 0.40 79 57 70 0.00 85 69 75 1.00 86 64 81 0.0017 79 51 61 0.00 74 54 64 0.00 85 65 74 0.00 92 69 80 0.00 76 66 77 0.5018 69 55 59 1.20 54 41 56 0.00 77 60 72 0.00 88 70 84 0.00 69 57 71 0.4019 64 46 57 1.00 56 37 53 0.00 80 59 73 0.00 86 65 83 0.00 67 55 65 2.1020 53 34 49 0.08 49 40 52 0.15 83 61 74 0.00 84 62 80 0.00 79 50 67 0.0021 54 33 46 0.00 76 39 53 0.00 85 63 76 0.00 80 58 80 0.20 80 58 71 0.0022 55 31 47 0.00 75 47 58 0.00 89 66 76 0.00 78 61 79 0.00 80 61 72 1.0023 61 31 50 0.00 72 56 60 0.00 82 59 77 0.00 83 61 79 0.00 71 52 69 0.0024 56 44 50 0.00 69 58 60 1.10 71 61 70 2.00 86 66 81 0.00 72 49 67 0.0025 51 42 48 0.50 78 61 63 0.00 80 66 72 1.50 89 72 84 0.00 74 50 70 0.0026 61 37 50 0.00 70 59 63 1.30 74 63 71 0.00 88 68 83 0.35 76 52 71 0.0027 66 39 53 0.00 82 55 64 0.00 84 60 74 0.50 79 68 77 1.70 72 54 68 0.0028 73 43 57 0.00 78 59 65 0.00 83 64 75 0.00 78 70 73 3.30 68 61 66 2.3029 71 45 59 0.00 76 58 65 0.00 81 63 75 0.00 82 63 75 0.00 72 61 67 0.0030 71 46 60 0.00 61 53 61 0.00 80 64 74 0.00 85 60 77 0.00 75 58 68 0.0031 67 48 60 0.00 85 64 81 0.00 85 62 71 0.00

precip precip precip precip precipmax min avg inches max min avg inches max min avg inches max min avg inches max min avg inches63 41 51 4.98 70 52 60 5.20 80 62 71 7.25 82 63 77 9.25 79 60 75 11.40

temp Fair

May

Air Temperature, 4-inch Soil Temperature and Precipitation, 2015Iowa State University Research Farms, Ames, IA

temp Ftemp Ftemp Ftemp Ftemp F

April

air air

monthly average max & min air temperature, 4-inch soil temperature and total precipitation

airtemp F

air

June July Augusttemp F temp F temp F

soil precip soil precip soil precip soil precip soil precipDate max min avg inches max min avg inches max min avg inches max min avg inches max min avg inches

1 80 38 48 0.00 66 37 55 0.00 72 42 65 0.00 67 51 68 0.00 87 55 74 0.002 65 45 50 0.39 78 47 61 0.00 75 50 67 0.00 73 48 68 0.00 89 63 76 0.003 45 23 40 0.00 84 56 67 0.00 82 57 69 0.00 78 50 70 0.00 80 53 73 0.004 61 22 43 0.00 69 56 63 0.57 82 57 71 0.00 80 54 71 0.00 80 51 71 0.005 68 32 49 0.00 58 52 57 0.25 82 60 73 0.00 84 59 72 0.00 79 50 70 0.006 60 34 48 0.00 77 54 61 0.00 79 58 72 0.00 78 58 72 0.91 81 55 69 0.007 47 38 43 0.60 79 61 63 0.00 83 62 74 0.23 68 51 69 0.00 85 63 72 0.008 49 39 44 0.65 64 54 62 0.00 83 60 74 0.00 72 47 67 0.00 80 60 71 0.019 47 32 43 1.01 70 49 63 0.00 97 56 75 0.00 78 49 68 0.00 81 64 71 0.04

10 50 33 41 0.00 64 56 61 0.00 86 66 77 0.00 83 56 70 0.00 82 59 72 0.0011 68 32 46 0.00 61 42 56 0.00 69 60 68 0.66 80 63 70 0.00 82 56 71 0.0012 69 47 54 0.00 61 41 55 0.00 67 58 65 0.00 86 66 72 0.00 84 54 70 0.0013 63 35 54 0.00 69 41 58 0.00 76 61 68 0.00 91 69 75 0.00 87 61 71 0.0014 70 30 54 0.00 57 49 56 0.29 84 60 74 0.00 84 64 76 0.00 91 67 74 0.0015 69 41 54 0.00 73 57 61 0.00 73 56 71 0.65 76 61 73 0.00 89 61 74 0.0016 73 49 60 0.00 81 59 65 0.00 78 51 70 0.00 80 64 71 0.27 86 65 73 0.0017 80 44 63 0.00 77 54 66 0.00 78 63 71 0.00 93 67 77 0.55 78 66 72 0.0718 80 51 61 0.40 54 38 58 0.00 78 57 72 0.00 88 67 79 0.01 68 59 69 1.1319 66 44 56 0.85 55 38 56 0.00 80 57 75 0.00 83 58 76 0.00 71 54 67 0.0220 47 34 45 0.00 49 39 55 0.10 80 60 71 0.34 82 59 74 0.24 76 49 67 0.0021 46 33 41 0.00 76 37 57 0.00 85 60 73 0.00 81 54 73 0.00 81 54 67 0.0022 50 28 44 0.00 75 40 62 0.00 84 64 73 1.30 83 53 73 0.00 79 60 69 0.4523 56 24 48 0.00 78 52 66 0.00 77 55 71 0.00 84 54 74 0.00 73 50 69 0.0324 47 37 44 0.42 65 58 62 0.38 76 55 71 0.00 85 63 73 0.71 69 47 67 0.0025 53 36 46 0.00 79 61 66 0.00 82 64 73 0.00 89 65 77 0.00 73 46 66 0.0026 61 28 50 0.00 68 58 63 1.39 74 59 70 1.94 84 66 76 0.45 78 43 66 0.0027 67 31 55 0.00 82 56 67 0.00 81 54 72 0.00 83 68 76 0.00 76 47 67 0.0028 74 35 57 0.00 82 59 69 0.00 78 60 72 0.55 84 70 75 0.86 63 58 64 2.4529 70 41 59 0.00 78 62 69 0.21 81 58 73 0.00 82 61 75 0.00 76 56 66 0.0030 68 35 59 0.00 62 49 62 0.00 78 56 72 0.00 86 56 74 0.00 74 52 67 0.0031 66 45 62 0.00 82 59 74 0.00 86 57 70 0.00

precip precip precip precip precipmax min avg inches max min avg inches max min avg inches max min avg inches max min avg inches62 36 50 4.32 70 50 61 3.19 79 58 71 5.67 81 59 73 4.00 79 56 70 4.19

April

air air

airtemp F

air

June July Augusttemp F

air

May

Air Temperature, 4-inch Soil Temperature and Precipitation, 2015Northeast Research and Demonstration Farm, Nashua, IA

temp Ftemp Ftemp Ftemp Ftemp F

temp F temp F temp F

Study Directory Ames, IA Corn studies No-tillage ACN 1 Early preplant and postemergence herbicide programs in no-tillage corn, Ames, IA, 2015.

Minimum-tillage ACC 1 Preemergence and postemergence applied herbicide combinations for weed control in corn, Ames

IA, 2015. ACC 2 Efficacy and crop safety of Armezon PRO in corn, Ames, IA, 2015. ACC 3 Field performance of Armezon PRO in comparison to Capreno and Halex GT in corn, Ames, IA,

2015. ACC 4 Two-pass and one-pass herbicide programs representing a range of herbicides for corn, Ames, IA,

2015. ACC 5 Weed control and selectivity of SYNA20540, Acuron, SureStart II, Corvus, Envive and Verdict in

corn, Ames, IA, 2015. ACC 6 Corvus, Aatrex 4L, Liberty 280, DiFlexx, Laudis, Balance Flexx, Capreno, Zidua and Harness

included in one-pass and two-pass weed control, Ames, IA, 2015. ACC 7 Weed control and selectivity of preemergence Acuron, Anthem ATZ, SureStart II, Verdict, Corvus,

Bicep Lite II Magnum and Dual II Magnum and postemergence Status, Touchdown Total, Halex GT and Callisto Xtra in corn, Ames, IA, 2015.

ACC 8 Two-pass herbicide programs in corn with residuals applied preemergence and postemergence including Zidua, Sharpen, Armezon PRO, Aatrex 4L, Verdict, Lumax EZ, Halex GT, Corvus and Laudis , Ames, IA, 2015. ACC 9 Armezon and Status Combinations in corn, Ames, IA, 2015. ACC 10 Enhanced preemergence weed control in corn. Zidua SC, Sharpen, Aatrex 4L, Verdict, Armezon

PRO, Lexar EZ, Zemax, SureStart II, Harness Xtra, Corvus, Anthem ATZ and Acuron, Ames, IA, 2015.

ACC 11 Anthem Maxx, Anthem ATZ, Halex GT, Cadet, Solstice and Aatrex 4L applied in preemergence followed by postemergence and early postemergence programs in corn, Ames, IA, 2015. ACC 12 Cheetah Broad ratio determination in LL corn, Ames, IA 2015. ACC 13 Impact programs with preemergence Harness Xtra 5.6 and postemergence tank-mix combinations

including Aatrex 4L and Status, Ames, IA, 2015. ACC 14 AG14039 and Destiny HC for weed control with glyphosate plus Armezon in corn, Ames, IA, 2015. ACC 15 Water conditioning adjuvants AG13063, AMS, and Class Act NG with glyphosate for weed control

in corn, Ames, IA, 2015. ACC 16 Water conditioning adjuvants AG13063 and Class Act NG with Halex GT for weed control in corn,

Ames, IA, 2015. ACC 17 Tolpyralate tank mixes with Aatrex 4L and Dual II Magnum, Surpass NXT or Status. Callisto,

Impact and Laudis tank-mixes with Aatrex 4L for weed control in corn, Ames, IA, 2015. ACS 1 Selectivity of CHA-2745 when applied preemergence to corn, Ames, IA, 2015. APC 1 Postemergence weed control in popcorn with Revulin Q, Ames, IA, 2015.

BCC 1 Impact programs to control glyphosate-resistant weed species, Ames, IA, 2015. JCC 1 Effect of Stratego YLD tank mixed with Laudis Flexx, DiFlexx or Capreno on corn yield, Ames, IA,

2015. JCC 2 Effects of early season application of Stratego YLD tank mixed with Laudis on corn, Ames, IA,

2015.

(ACN1) ARM 2014.7 Site Description Page 1

Iowa State University herbicide evaluation program Early preplant and postemergence herbicide programs in no-tillage corn, Ames, IA, 2015.

Trial ID: ACN1 Location: Ames Trial Year: 2015Protocol ID: Ames Corn NT 2015 Investigator: Micheal OwenProject ID: Study Director: Owen/Franzenburg/Lee/North

Sponsor Contact:

General Trial InformationStudy Director: Owen/Franzenburg/Lee/North

Investigator: Micheal Owen

Discipline: H herbicideTrial Status: F one-year/final

Initiation Date: 4/23/2015Completion Date: 10/12/2015

Trial LocationCity: Ames Country: USA United States

State/Prov.: IowaPostal Code: 50014

Conducted Under GLP: NoConducted Under GEP: No

Objectives:The purpose of this study was to evaluate efficacy and selectivity for herbicides applied early preplant or

postemergence in no-tillage corn.

Crop DescriptionCrop 1: ZEAMD Zea mays indentata Dent cornVariety: DKC61-54 RIB BBCH Scale: BCOR

Planting Date: 5/2/2015Planting Rate, Unit: 35600 S/A Planting Method: DIRDRI direct drilled

Depth, Unit: 1.75 IN Planting Equipment: FPP Finger Pickup PlanterRow Spacing, Unit: 30 IN Emergence Date: 5/10/2015

Harvest Date: 10/12/2015 Harvested Width, Unit: 10 FT

Soil Temperature, Unit: 52 F Harvested Length, Unit: 21.5 FTSoil Moisture: NORMAL normal, adequate Harvest Equipment: JOHN DEERE 9450

Seed Bed: SMOTRA smooth/trashy % Standard Moisture: 15.5 Moisture Meter: HARVESTMASTER

Weighing Equipment: HARVESTMASTER

Pest DescriptionPest 1 Type: W Code: ERBVI Eriochloa villosa

Common Name: Woolly cupgrass

Pest 2 Type: W Code: SETFA Setaria faberiCommon Name: Giant foxtail

Pest 3 Type: W Code: ABUTH Abutilon theophrastiCommon Name: velvetleaf

Pest 4 Type: W Code: AMBEL Ambrosia artemisiifoliaCommon Name: Common ragweed

Pest 5 Type: W Code: CHEAL Chenopodium albumCommon Name: Common lambsquarters

Pest 6 Type: W Code: XANSS Xanthium sp.Common Name: Cocklebur




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Site and DesignTreated Plot Width: 10 FT Site Type: FIELD field

Treated Plot Length: 25 FTTreated Plot Area: 250 FT2 Treatments: 12 Tillage Type: NOTILL no-till

Replications: 3 Study Design: RACOBL Randomized Complete Block (RCB)Untreated Arrangement: INCLUDED single control randomized in each block

Trial Initiation Comments:Grass weed species in the trial area consisted of a mixture of primarily giant foxtail and some woolly cupgrass.

Common ragweed distribution was very uneven.

No. Previous Crop Year

1. SOYBEAN 2014

Field Prep./Maintenance:The study area was left un-tilled from the 2014 soybean cropping season. Fertilization included 180 lbs/A actual N

applied as urea in the spring, 2015. Crop residue on the soil surface was 40 to 45% at planting.

Soil DescriptionDescription Name: WEST CURTISS, SOUTH CORN

% OM: 3.6 Texture: L loam pH: 6.8 Soil Name: NICOLLET

CEC: 20.8 Fert. Level: E Soil Drainage: G good

Moisture and Weather ConditionsOverall Moisture Conditions: ABONOR above normal

Closest Weather Station: ISU CURTISS FARM Distance, Unit: 0.5 MI




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TypeNo. Date Amount Unit Type Description

1. 4/2/2015 0.65 IN RAIN rain

2. 4/10/2015 1.2 IN RAIN rain

3. 4/12/2015 0.35 IN RAIN rain

4. 4/18/2015 1.2 IN RAIN rain

5. 4/19/2015 1.0 IN RAIN rain

6. 4/25/2015 0.5 IN RAIN rain

7. 5/3/2015 0.45 IN RAIN rain

8. 5/4/2015 0.55 IN RAIN rain

9. 5/7/2015 0.1 IN RAIN rain

10. 5/10/2015 0.35 IN RAIN rain

11. 5/14/2015 0.8 IN RAIN rain

12. 5/16/2015 0.4 IN RAIN rain

13. 5/20/2015 0.15 IN RAIN rain

14. 5/24/2015 1.1 IN RAIN rain

15. 5/26/2015 1.3 IN RAIN rain

16. 6/2/2015 0.15 IN RAIN rain

17. 6/6/2015 0.8 IN RAIN rain

18. 6/11/2015 1.4 IN RAIN rain

19. 6/15/2015 0.9 IN RAIN rain

20. 6/24/2015 2.0 IN RAIN rain

21. 6/25/2015 1.5 IN RAIN rain

22. 6/27/2015 0.5 IN RAIN rain

23. 7/6/2015 1.9 IN RAIN rain

24. 7/11/2015 0.8 IN RAIN rain

25. 7/16/2015 1.0 IN RAIN rain

26. 7/21/2015 0.2 IN RAIN rain

27. 7/26/2015 0.35 IN RAIN rain

28. 7/27/2015 1.7 IN RAIN rain

29. 7/28/2015 3.3 IN RAIN rain




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Application DescriptionA B

Application Date: 4/23/2015 6/1/2015

Application Method: SPRAY SPRAY

Application Timing: EPP POST

Application Placement: SOIL BROFOL

Air Temperature, Unit: 57 F 77 F

% Relative Humidity: 23 35

Wind Velocity, Unit: 3 MPH 5 MPH

Wind Direction: WSW SE

Dew Presence (Y/N): N no N no

Soil Temperature, Unit: 55 F 77 F

Soil Moisture: NORMAL NORMAL

% Cloud Cover: 0 5

Next Moisture Occurred On: 4/25/2015 6/6/2015

Crop Stage At Each ApplicationA B

Crop 1 Code, BBCH Scale: ZEAMD BCOR ZEAMD BCOR

Stage Scale Used: DESC

Stage Majority, Percent: V4

Stage Minimum, Percent: V4

Stage Maximum, Percent: V4

Height, Unit: 8 IN

Height Minimum, Maximum: 6 10

Pest Stage At Each ApplicationA B

Pest 1 Code, Type, Scale: ERBVI W ERBVI W

Stage Majority, Percent: 1 LEAF 3 LEAF

Stage Minimum, Percent: 1 LEAF 1 LEAF

Stage Maximum, Percent: 2 LEAF 4 LEAF

Height, Unit: 0.25 IN 4 IN

Height Minimum, Maximum: 0.25 0.5 0.25 6

Density, Unit: 5 FT2 10 FT2

Pest 2 Code, Type, Scale: SETFA W SETFA W




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Stage Majority, Percent: 3 LEAF

Stage Minimum, Percent: 1 LEAF

Stage Maximum, Percent: 4 LEAF

Height, Unit: 4 IN

Height Minimum, Maximum: 0.25 6

Density, Unit: 40 FT2

Pest 3 Code, Type, Scale: ABUTH W ABUTH W

Stage Majority, Percent: COTYLE 4 LEAF

Stage Minimum, Percent: COTYLE COTYLE

Stage Maximum, Percent: 1 LEAF 6 LEAF

Height, Unit: 0.25 IN 2.5 IN



Pest 4 Code, Type, Scale: AMBEL W AMBEL W

Stage Majority, Percent: 4 LEAF NUMERO


Stage Maximum, Percent: 8 LEAF NUMERO

Height, Unit: 1.5 IN 4 IN



Pest 5 Code, Type, Scale: CHEAL W CHEAL W

Stage Majority, Percent: 2 LEAF NUMERO


Stage Maximum, Percent: 4 LEAF NUMERO

Height, Unit: 1 IN 0.5 IN



Pest 6 Code, Type, Scale: XANSS W XANSS W

Stage Majority, Percent: NUMERO

Stage Minimum, Percent: COTYLE

Stage Maximum, Percent: NUMERO

Height, Unit: 5 IN






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Application EquipmentA B

Appl. Equipment: HAND SPRAYER ATV

Equipment Type: BACMAN

Operation Pressure, Unit: 32 PSI 32 PSI

Nozzle Type: TT TT

Nozzle Size: 110015 110015

Nozzle Spacing, Unit: 19 IN 20 IN

Boom Length, Unit: 10 FT 10 FT

Ground Speed, Unit: 3 MPH 2.8 MPH

Spray Volume, Unit: 15 GAL/AC 15 GAL/AC

Trial Comments

Pest code SETFA represents a mixture of primarily giant foxtail and some woolly cupgrass.

"Rating Type" on June 12 labeled "BURNDN" refers to initial control by postemergence treatments, and "CONTROL" includes residual control of emerging weeds from early pre-plant treatments.

Rainfall for 2015 was greater than normal; plenty of moisture was available for residual herbicide activity.

Missing data estimates are included in columns:Average=11

(ACN1) ARM 2014.7 Standardized Summary Page 7



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Pest Code ZEAMD SETFA ABUTH AMBELRating Date 5/19/2015 5/19/2015 5/19/2015 5/19/2015Rating Type PHYGEN CONTROL CONTROL CONTROLRating Unit percent percent percent percentTrt-Eval Interval 26 DA-A 26 DA-A 26 DA-A 26 DA-A

Trt Treatment Form Form Rate Other Other Growth ApplNo. Name Conc Type Rate Unit Rate Rate Unit Stage Code 1 2 3 4

1 Untreated Check 0 0 0 0

2 Harness Xtra 5.6 5.6 SE 2.24 LB AI/A 3.2 PT/A EPP A 0 90 78 98Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 2.5 LB/A 2.5 LB/A EPP AImpact 2.8 SC 0.0164 LB AI/A 0.75 FL OZ/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BMSO L 0.5 % V/V 0.5 % V/V POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

3 Verdict 5.57 EC 0.696 LB AI/A 16 FL OZ/A EPP A 0 95 98 99Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AStatus 56 WG 0.175 LB AI/A 5 OZ WT/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BNIS L 0.25 % V/V 0.25 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

4 Corvus 2.63 SC 0.082 LB AI/A 4 FL OZ/A EPP A 0 93 98 99Aatrex 4L 4 SC 0.5 LB AI/A 1 PT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP ALiberty 280 2.34 SL 0.53 LB AI/A 29 FL OZ/A POST BLaudis Flexx 1.53 SC 0.383 LB AI/A 32 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BCOC L 0.5 % V/V 0.5 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

5 Harrow 75 WDG 0.0234 LB AI/A 0.5 OZ WT/A EPP A 0 57 37 93Glyfos X-TRA 3 SC 0.75 LB AE/A 32 FL OZ/A EPP ANIS L 0.25 % V/V 0.25 % V/V EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AGlyfos X-TRA 3 SC 0.75 LB AE/A 32 FL OZ/A POST BNIS L 0.25 % V/V 0.25 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

6 SureStart II 4.25 SE 1.33 LB AI/A 2.5 PT/A EPP A 0 95 93 99AAtrex 4L 4 SC 1.0 LB AI/A 1 QT/A EPP A2,4-D LV4 3.8 SL 0.475 LB AI/A 1 PT/A EPP ADurango DMA 4 SL 1 LB AE/A 1 QT/A EPP AN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V EPP ADurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B




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7 Basis Blend 30 WG 0.0155 LB AI/A 0.825 OZ WT/A EPP A 0 47 60 63AAtrex 4L 4 SC 1.0 LB AI/A 2 PT/A EPP A2,4-D LV4 3.8 SL 0.475 LB AI/A 1 PT/A EPP ACOC L 1 % V/V 1 % V/V EPP AAMS SG 2.0 LB/A 2 LB/A EPP ARealm Q 38.75 WG 0.097 LB AI/A 4 OZ WT/A POST BAbundit Extra 3 SL 0.75 LB AE/A 32 FL OZ/A POST BAMS SG 2.0 LB/A 2 LB/A POST B

8 Anthem Maxx 4.3 SE 0.168 LB AI/A 5 FL OZ/A EPP A 0 77 73 95Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP ASolstice 4 SC 0.078 LB AI/A 2.5 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BCOC L 1 % V/V 1 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

9 Lumax EZ 3.67 ZC 1.65 LB AI/A 1.8 QT/A EPP A 0 60 92 96Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AHalex GT 4.38 CS 1.97 LB AI/A 3.6 PT/A POST BAAtrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BAMS 100 SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST BNIS 100 SL 0.25 % V/V 0.25 % V/V POST B

10 Fierce 76 WG 0.143 LB AI/A 3 OZ WT/A EPP A 0 88 96 98Aatrex 4L 4 SC 1 LB AI/A 1 QT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 2.5 LB/A 2.5 LB/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BAMS SG 2.5 LB/A 2.5 LB/A POST B

11 Dual II Magnum 7.64 EC 1.12 LB AI/A 18.8 FL OZ/A EPP A 0 53 33 90Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AN-Pak AMS Liquid L 6 PT/A 6 PT/A EPP ALiberty 280 2.34 SL 0.402 LB AI/A 22 FL OZ/A POST BN-Pak AMS Liquid L 6 PT/A 6 PT/A POST B

12 Dual II Magnum 7.64 EC 1.12 LB AI/A 18.8 FL OZ/A EPP A 0 70 50 90Roundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AN-Pak AMS Liquid L 6 PT/A 6 PT/A EPP AInterline 2.34 L 0.402 LB AI/A 22 FL OZ/A POST BN-Pak AMS Liquid L 6 PT/A 6 PT/A POST B

LSD P=.05 0.0 16.0 14.2 9.3Standard Deviation 0.0 9.4 8.4 5.5CV 0.0 13.73 12.44 6.44

Pest Code ZEAMD SETFA ABUTH AMBELRating Date 5/19/2015 5/19/2015 5/19/2015 5/19/2015Rating Type PHYGEN CONTROL CONTROL CONTROLRating Unit percent percent percent percentTrt-Eval Interval 26 DA-A 26 DA-A 26 DA-A 26 DA-A





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CHEAL ZEAMD SETFA ABUTH5/19/2015 6/1/2015 6/1/2015 6/1/2015

CONTROL PHYGEN CONTROL CONTROLpercent percent percent percent

26 DA-A 0 DA-B 0 DA-B 0 DA-B

5 6 7 8

0 0 0 0

99 0 73 58

99 0 78 91

99 0 80 96

99 0 58 37

99 0 75 90

Pest CodeRating DateRating TypeRating UnitTrt-Eval Interval

Trt Treatment Form Form Rate Other Other Growth ApplNo. Name Conc Type Rate Unit Rate Rate Unit Stage Code

1 Untreated Check

2 Harness Xtra 5.6 5.6 SE 2.24 LB AI/A 3.2 PT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 2.5 LB/A 2.5 LB/A EPP AImpact 2.8 SC 0.0164 LB AI/A 0.75 FL OZ/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BMSO L 0.5 % V/V 0.5 % V/V POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

3 Verdict 5.57 EC 0.696 LB AI/A 16 FL OZ/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AStatus 56 WG 0.175 LB AI/A 5 OZ WT/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BNIS L 0.25 % V/V 0.25 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

4 Corvus 2.63 SC 0.082 LB AI/A 4 FL OZ/A EPP AAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP ALiberty 280 2.34 SL 0.53 LB AI/A 29 FL OZ/A POST BLaudis Flexx 1.53 SC 0.383 LB AI/A 32 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BCOC L 0.5 % V/V 0.5 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

5 Harrow 75 WDG 0.0234 LB AI/A 0.5 OZ WT/A EPP AGlyfos X-TRA 3 SC 0.75 LB AE/A 32 FL OZ/A EPP ANIS L 0.25 % V/V 0.25 % V/V EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AGlyfos X-TRA 3 SC 0.75 LB AE/A 32 FL OZ/A POST BNIS L 0.25 % V/V 0.25 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

6 SureStart II 4.25 SE 1.33 LB AI/A 2.5 PT/A EPP AAAtrex 4L 4 SC 1.0 LB AI/A 1 QT/A EPP A2,4-D LV4 3.8 SL 0.475 LB AI/A 1 PT/A EPP ADurango DMA 4 SL 1 LB AE/A 1 QT/A EPP AN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V EPP ADurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B




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99 0 47 50

99 0 82 67

99 0 65 93

99 0 82 94

99 0 70 27

99 0 77 40

0.0 0.0 12.9 17.50.0 0.0 7.6 10.30.0 0.0 11.64 16.64

CHEAL ZEAMD SETFA ABUTH5/19/2015 6/1/2015 6/1/2015 6/1/2015

CONTROL PHYGEN CONTROL CONTROLpercent percent percent percent

26 DA-A 0 DA-B 0 DA-B 0 DA-B

5 6 7 8

7 Basis Blend 30 WG 0.0155 LB AI/A 0.825 OZ WT/A EPP AAAtrex 4L 4 SC 1.0 LB AI/A 2 PT/A EPP A2,4-D LV4 3.8 SL 0.475 LB AI/A 1 PT/A EPP ACOC L 1 % V/V 1 % V/V EPP AAMS SG 2.0 LB/A 2 LB/A EPP ARealm Q 38.75 WG 0.097 LB AI/A 4 OZ WT/A POST BAbundit Extra 3 SL 0.75 LB AE/A 32 FL OZ/A POST BAMS SG 2.0 LB/A 2 LB/A POST B

8 Anthem Maxx 4.3 SE 0.168 LB AI/A 5 FL OZ/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP ASolstice 4 SC 0.078 LB AI/A 2.5 FL OZ/A POST BAatrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BRoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BCOC L 1 % V/V 1 % V/V POST BAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST B

9 Lumax EZ 3.67 ZC 1.65 LB AI/A 1.8 QT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 8.5 LB/100 GAL 8.5 LB/100 GAL EPP AHalex GT 4.38 CS 1.97 LB AI/A 3.6 PT/A POST BAAtrex 4L 4 SC 0.5 LB AI/A 1 PT/A POST BAMS 100 SG 8.5 LB/100 GAL 8.5 LB/100 GAL POST BNIS 100 SL 0.25 % V/V 0.25 % V/V POST B

10 Fierce 76 WG 0.143 LB AI/A 3 OZ WT/A EPP AAatrex 4L 4 SC 1 LB AI/A 1 QT/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AAMS SG 2.5 LB/A 2.5 LB/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A POST BAMS SG 2.5 LB/A 2.5 LB/A POST B

11 Dual II Magnum 7.64 EC 1.12 LB AI/A 18.8 FL OZ/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AN-Pak AMS Liquid L 6 PT/A 6 PT/A EPP ALiberty 280 2.34 SL 0.402 LB AI/A 22 FL OZ/A POST BN-Pak AMS Liquid L 6 PT/A 6 PT/A POST B

12 Dual II Magnum 7.64 EC 1.12 LB AI/A 18.8 FL OZ/A EPP ARoundup PowerMAX 4.5 SL 1.13 LB AE/A 32 FL OZ/A EPP AN-Pak AMS Liquid L 6 PT/A 6 PT/A EPP AInterline 2.34 L 0.402 LB AI/A 22 FL OZ/A POST BN-Pak AMS Liquid L 6 PT/A 6 PT/A POST B

LSD P=.05Standard DeviationCV






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AMBEL CHEAL XANSS ZEAMD6/1/2015 6/1/2015 6/1/2015 6/12/2015

CONTROL CONTROL CONTROL PHYGENpercent percent percent percent0 DA-B 0 DA-B 0 DA-B 11 DA-B

9 10 11 12

0 0 0 0

86 99 57 0

89 99 80 8

96 99 83 15

90 99 70 0

96 99 60 7



1 Untreated Check









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63 99 75 0

83 99 47 10

96 96 53 0

93 99 63 0

70 96 0 0

70 93 0 0

19.8 4.5 19.9 4.511.7 2.7 11.6 2.6

15.03 2.98 23.7 79.42

AMBEL CHEAL XANSS ZEAMD6/1/2015 6/1/2015 6/1/2015 6/12/2015

CONTROL CONTROL CONTROL PHYGENpercent percent percent percent0 DA-B 0 DA-B 0 DA-B 11 DA-B

9 10 11 12













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SETFA ABUTH AMBEL CHEAL6/12/2015 6/12/2015 6/12/2015 6/12/2015BURNDN BURNDN BURNDN BURNDN

percent percent percent percent11 DA-B 11 DA-B 11 DA-B 11 DA-B

13 14 15 16

0 0 0 0

99 99 99 99

99 99 99 99

99 99 99 99

99 99 99 99

99 99 99 99



1 Untreated Check









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99 99 99 99

99 99 99 99

99 99 99 99

99 99 99 99

99 99 99 99

99 99 99 99

0.0 0.0 0.0 0.00.0 0.0 0.0 0.00.0 0.0 0.0 0.0

SETFA ABUTH AMBEL CHEAL6/12/2015 6/12/2015 6/12/2015 6/12/2015BURNDN BURNDN BURNDN BURNDN


13 14 15 16













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XANSS SETFA ABUTH AMBEL6/12/2015 6/12/2015 6/12/2015 6/12/2015BURNDN CONTROL CONTROL CONTROL


17 18 19 20

0 0 0 0

99 75 67 99

96 75 78 99

99 72 87 99

99 68 63 98

99 65 60 99



1 Untreated Check









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99 65 72 99

99 80 90 99

99 85 83 99

99 63 68 99

98 73 60 99

98 72 53 96

1.9 11.4 16.7 2.71.1 6.7 9.9 1.6

1.26 10.15 15.14 1.75

XANSS SETFA ABUTH AMBEL6/12/2015 6/12/2015 6/12/2015 6/12/2015BURNDN CONTROL CONTROL CONTROL


17 18 19 20













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CHEAL XANSS ZEAMD SETFA6/12/2015 6/12/2015 6/27/2015 6/27/2015

CONTROL CONTROL PHYGEN CONTROLpercent percent percent percent

11 DA-B 11 DA-B 26 DA-B 26 DA-B

21 22 23 24

0 0 0 0

99 83 0 58

99 96 5 65

99 99 3 65

99 90 0 60

99 90 3 53



1 Untreated Check









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99 96 0 65

99 95 8 82

99 93 0 88

99 93 0 63

99 90 0 67

93 87 0 65

2.5 16.0 3.5 8.81.5 9.4 2.1 5.2

1.66 11.2 125.23 8.53

CHEAL XANSS ZEAMD SETFA6/12/2015 6/12/2015 6/27/2015 6/27/2015

CONTROL CONTROL PHYGEN CONTROLpercent percent percent percent

11 DA-B 11 DA-B 26 DA-B 26 DA-B

21 22 23 24













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ABUTH AMBEL CHEAL XANSS6/27/2015 6/27/2015 6/27/2015 6/27/2015

CONTROL CONTROL CONTROL CONTROLpercent percent percent percent

26 DA-B 26 DA-B 26 DA-B 26 DA-B

25 26 27 28

0 0 0 0

68 96 99 77

78 94 99 93

95 99 99 96

62 98 99 82

72 91 99 87



1 Untreated Check









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92 99 99 93

96 99 99 93

92 99 99 88

70 96 99 88

60 96 99 81

53 93 93 82

11.2 9.6 2.5 18.66.6 5.7 1.5 11.0

9.45 6.44 1.66 13.69

ABUTH AMBEL CHEAL XANSS6/27/2015 6/27/2015 6/27/2015 6/27/2015

CONTROL CONTROL CONTROL CONTROLpercent percent percent percent

26 DA-B 26 DA-B 26 DA-B 26 DA-B

25 26 27 28













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ZEAMD ZEAMD8/12/2015 10/12/2015STAOBJ YIELD17.5 FT bu/ac

111 DA-A 172 DA-A

29 30

22 123

37 292

37 280

35 287

36 281

35 278



1 Untreated Check









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37 279

37 267

37 283

36 280

38 279

36 275

5.2 38.93.1 23.0

8.78 8.61

ZEAMD ZEAMD8/12/2015 10/12/2015STAOBJ YIELD17.5 FT bu/ac

111 DA-A 172 DA-A

29 30













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Pest Code ZEAMD, Zea mays indentata, = US SETFA, Setaria faberi, = US ABUTH, Abutilon theophrasti, = US AMBEL, Ambrosia artemisiifolia, = US CHEAL, Chenopodium album, = US XANSS, Xanthium sp., = USRating Type PHYGEN = phytotoxicity - general / injury STAOBJ = stand - objective (based on counts) YIELD = yieldRating Unit bu/ac = bushels per acre

(ACC1) ARM 2014.7 Site Description Page 1

Iowa State University herbicide evaluation program Preemergence and postemergence applied herbicide combinations for weed control in corn, Ames IA, 2015.

Trial ID: ACC1 Location: Ames Trial Year: 2015Protocol ID: Ames Corn 2015 Investigator: Micheal OwenProject ID: Study Director: Owen/Franzenburg/Lee/North

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General Trial InformationStudy Director: Owen/Franzenburg/Lee/North

Investigator: Micheal Owen

Discipline: H herbicideTrial Status: F one-year/final

Initiation Date: 4/30/2015Completion Date: 7/8/2015

Trial LocationCity: Ames Country: USA United States

State/Prov.: IowaPostal Code: 50014

Conducted Under GLP: NoConducted Under GEP: No

Objectives:The purpose of this study was to evaluate comparisons of standard preemergence and postemergence applied

herbicide combinations in corn for crop phytotoxicity and weed control.

Crop DescriptionCrop 1: ZEAMD Zea mays indentata Dent cornVariety: Dekalb DKC61-54RIB BBCH Scale: BCOR

Planting Date: 4/30/2015Planting Rate, Unit: 35600 S/A Planting Method: DIRDRI direct drilled

Depth, Unit: 2 IN Planting Equipment: FPP Finger Pickup PlanterRow Spacing, Unit: 30 IN Emergence Date: 5/8/2015

Soil Temperature, Unit: 57 FSoil Moisture: NORMAL normal, adequate

Seed Bed: MEDIUM medium

Pest DescriptionPest 1 Type: W Code: SETFA Setaria faberi

Common Name: Giant foxtail

Pest 2 Type: W Code: ERBVI Eriochloa villosaCommon Name: Woolly cupgrass

Pest 3 Type: W Code: ABUTH Abutilon theophrastiCommon Name: velvetleaf

Pest 4 Type: W Code: XANSS Xanthium sp.Common Name: Cocklebur




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Site and DesignTreated Plot Width: 10 FT Site Type: FIELD field

Treated Plot Length: 25 FTTreated Plot Area: 250 FT2 Treatments: 18 Tillage Type: MINTIL minimum-till

Replications: 3 Study Design: RACOBL Randomized Complete Block (RCB)Untreated Arrangement: INCLUDED single control randomized in each block

No. Previous Crop Year

1. SOYBEAN 2014

Field Prep./Maintenance:Fertilization included 150 lbs/A actual N applied as 32% liquid UAN in the spring, 2015. Tillage included a field

cultivation to prepare the seedbed for planting. Crop residue that remained on the soil surface at planting was 20 to 35%.

Soil DescriptionDescription Name: WEST CURTISS, SOUTH CORN

% OM: 3.6 Texture: CL clay loam pH: 7.0 Soil Name: CANISTEO

CEC: 21.4 Fert. Level: E Soil Drainage: F fair

Moisture and Weather ConditionsOverall Moisture Conditions: ABONOR above normal




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TypeNo. Date Amount Unit Type Description

1. 4/2/2015 0.65 IN RAIN rain

2. 4/10/2015 1.2 IN RAIN rain

3. 4/12/2015 0.35 IN RAIN rain

4. 4/18/2015 1.2 IN RAIN rain

5. 4/19/2015 1.0 IN RAIN rain

6. 4/25/2015 0.5 IN RAIN rain

7. 5/3/2015 0.45 IN RAIN rain

8. 5/4/2015 0.55 IN RAIN rain

9. 5/7/2015 0.1 IN RAIN rain

10. 5/10/2015 0.35 IN RAIN rain

11. 5/14/2015 0.8 IN RAIN rain

12. 5/16/2015 0.4 IN RAIN rain

13. 5/20/2015 0.15 IN RAIN rain

14. 5/24/2015 1.1 IN RAIN rain

15. 5/26/2015 1.3 IN RAIN rain

16. 6/2/2015 0.15 IN RAIN rain

17. 6/6/2015 0.8 IN RAIN rain

18. 6/11/2015 1.4 IN RAIN rain

19. 6/15/2015 0.9 IN RAIN rain

20. 6/24/2015 2.0 IN RAIN rain

21. 6/25/2015 1.5 IN RAIN rain

22. 6/27/2015 0.5 IN RAIN rain




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Application DescriptionA B

Application Date: 5/1/2015 6/5/2015

Application Method: SPRAY SPRAY

Application Timing: PRE POST

Application Placement: BROSOI BROFOL

Air Temperature, Unit: 60 F 83 F

% Relative Humidity: 70 46

Wind Velocity, Unit: 10 MPH 5 MPH

Wind Direction: W E

Dew Presence (Y/N): N no N no

Soil Temperature, Unit: 54 F 78 F

Soil Moisture: NORMAL NORMAL

% Cloud Cover: 100 80

Next Moisture Occurred On: 5/3/2015 6/6/2015

Crop Stage At Each ApplicationA B

Crop 1 Code, BBCH Scale: ZEAMD BCOR ZEAMD BCOR

Stage Scale Used: DESC

Stage Majority, Percent: V5

Stage Minimum, Percent: V5

Stage Maximum, Percent: V5

Height, Unit: 11 IN





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Pest Stage At Each ApplicationA B

Pest 1 Code, Type, Scale: SETFA W SETFA W




Height, Unit: 3 IN



Pest 2 Code, Type, Scale: ERBVI W ERBVI W




Height, Unit: 3 IN



Pest 3 Code, Type, Scale: ABUTH W ABUTH W




Height, Unit: 2 IN



Pest 4 Code, Type, Scale: XANSS W XANSS W

Stage Majority, Percent: NUMERO


Stage Maximum, Percent: NUMERO

Height, Unit: 5 IN






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Application EquipmentA B

Appl. Equipment: ATV ATV

Operation Pressure, Unit: 32 PSI 32 PSI

Nozzle Type: TTI TT

Nozzle Size: 110015 110015

Nozzle Spacing, Unit: 20 IN 20 IN

Boom Length, Unit: 10 FT 10 FT

Ground Speed, Unit: 2.8 MPH 2.8 MPH

Spray Volume, Unit: 15 GAL/AC 15 GAL/AC

Trial Comments

Giant foxtail (SETFA) in "Assessment Data" consisted of a mix of giant foxtail and woolly cupgrass.

Weed control ratings taken on June 23 (18 days after POST applications) represent overall control rather than only postemergence burndown control.

Rainfall for 2015 was greater than normal; plenty of moisture was available for residual herbicide activity.

(ACC1) ARM 2014.7 Standardized Summary Page 7



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Pest Code ZEAMD SETFA ABUTH ZEAMDRating Date 5/16/2015 5/16/2015 5/16/2015 6/5/2015Rating Type PHYGEN CONTROL CONTROL PHYGENRating Unit percent percent percent percentTrt-Eval Interval 15 DA-A 15 DA-A 15 DA-A 0 DA-B


1 Untreated Check 0 0 0 0

2 SureStart II 4.25 SE 1.33 LB AI/A 2.5 PT/A PRE A 0 98 77 0AAtrex 4L 4 SC 1 LB AI/A 1 QT/A PRE ADurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

3 SureStart II 4.25 SE 1.06 LB AI/A 2 PT/A PRE A 0 91 75 0SureStart II 4.25 SE 0.8 LB AI/A 1.5 PT/A POST BDurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

4 GF-3471 4 SE 2.75 LB AI/A 2.75 QT/A PRE A 0 96 99 0AAtrex 4L 4 SC 1 LB AI/A 1 QT/A PRE ADurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

5 GF-3471 4 SE 1.5 LB AI/A 1.5 QT/A PRE A 0 96 99 0AAtrex 4L 4 SC 1 LB AI/A 1 QT/A PRE AGF-3471 4 SE 1.25 LB AI/A 1.25 QT/A POST BAAtrex 4L 4 SC 1 LB AI/A 1 QT/A POST BDurango DMA 4 SL 1 LB AE/A 1 QT/A POST BN-Pak AMS Liquid L 2.5 % V/V 2.5 % V/V POST B

6 Instigate 45.84 WG 0.172 LB AI/A 6 OZ WT/A PRE A 0 98 98 0Breakfree NXT ATZ 5.6 L 3.78 LB AI/A 2.7 QT/A PRE A

7 Prequel 45 DF 0.0467 LB AI/A 1.66 OZ WT/A PRE A 0 67 95 0AAtrex 4L 4 SC 1 LB AI/A 2 PT/A PRE AAbundit Extra 3 SL 0.75 LB AE/A 32 FL OZ/A POST BRealm Q 38.75 WG 0.097 LB AI/A 4 OZ WT/A POST BAAtrex 4

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