104 Sturgis Hall Baton Rouge, LA

Transcription

1 WEED SCIENCE 2010 Annual Research Report James L. Griffin, Matthew J. Bauerle, Joseph M. Boudreaux, and Jose R. Mite School of Plant, Environment tal, and Soil Sciences 104 Sturgis Hall Baton Rouge, LA William B. Richardson, Chancellor David J. Boethel, Vice Chancellor & Director, Louisiana Agricultural Experiment Station 1

2 TABLE OF CONTENTS Introduction... 4 Acknowledgments... 5 Rainfall Data... 6 Herbicides and Adjuvants Evaluated... 8 Abbreviations of Weed Species Miscellaneous Abbreviations Sugarcane Weed Control Research Evaluation of CHA-016 at Planting Bermudagrass Fallow Programs Test Evaluation of Corvus, Capreno, Laudis, and Callisto in Sugarcane Eptam at Planting Study Soybean Weed Control Research V3-V4 Soybean Dicamba Drift Study R1 Soybean Dicamba Drift Study Value of PRE Herbicides in Roundup Ready Soybean Program Approach for Weed Control in Liberty Link Soybean Tank-mix partners for Ignite 280 in Liberty Link Soybean Program Approach for Weed Control in Roundup Ready Soybean Valent PRE Test Fungicide/Harvest Aid Test Harvest Aid Rate Study-Vines Harvest Aid Surfactant Study-Vines Harvest Aid Rate Study-Grass Harvest Aid Rate Study-Weed Free Harvest Aid Surfactant Study-Weed Free Gramoxone Inteon Timing Study

3 Other Research Weed Control with SL-160 (Flazasulfuron) Evaluation of Corvus, Caperno, Laudis, and Callisto for Weed Control Assure II Tolerant Grain Sorghum Test ALS Tolerant Grain Sorghum Test Evalution of Various Herbicides PRE and POST on M 81-E Sweet Sorghum

4 Introduction Louisiana can be divided into several areas based on cropping systems, climatic conditions, soil types, and ph. These factors are important in selecting specific herbicides and rates and can directly affect herbicide efficacy, crop safety, and injury to rotational crops. South Louisiana has an abundance of weed species, some not commonly found in other areas of the state. Climatic conditions are favorable for prolific weed growth and subsequent competition with crops. Weed control programs including mechanical cultivation, crop rotation, and herbicides are used, but herbicides serve as the foundation for weed control programs. Steady progress has been made in the development of effective herbicides with crop safety. Research and extension personnel with the LSU AgCenter work cooperatively with agrichemical companies to evaluate new herbicides for weed control and crop tolerance as well as their effect on rotational crops. This progress report summarizes weed research conducted in sugarcane and soybeans during the growing season. Results of herbicide efficacy and crop tolerance studies are presented. Results are preliminary since evaluation of some of the herbicides is limited. Data presented in this report should not be considered as an endorsement or recommendation of any herbicide and should not be reproduced without permission. Registration by the Environmental Protection Agency is required before any herbicide can be legally used. Rainfall data for the 2010 growing season are shown in Tables 1 and 2. Herbicides and adjuvants evaluated are presented in Table 3. Selected weed areas at the Ben Hur Research Farm, the Sugar Research Station, and at several off-station sites have been managed to encourage uniform weed populations. Weed species evaluated for control are presented in Table 4. Specific information on location, soil type, variety, row spacing, treatment date, sprayer type, etc. for all experiments is presented followed by a table of experimental results. Data were summarized and statistically analyzed using Agriculture Research Manager (ARM) by Gylling Data Management, Inc., Brookings, South Dakota. Control and crop injury ratings for all experiments are based on a scale of 0 to 100%, where 0 equals no control or crop injury and 100% equals complete control or crop injury. Injury ratings are based on chlorosis, necrosis, and stand and height reductions. Where appropriate, crop yields were obtained. Soybean yields are adjusted to 13% moisture. Miscellaneous abbreviations used in this report are shown in Table 5. For additional information concerning research activities presented in this report contact James L. Griffin, School of Plant, Environmental, and Soil Sciences, 104 Sturgis Hall, Baton Rouge, LA 70803, (225) , or by at jgriffin@agcenter.lsu.edu. This report is also available on the LSU AgCenter web site +Reports.htm 4

5 Acknowledgments The research information presented in this report was supported by Louisiana farmers through The Louisiana Soybean and Grain Research and Promotion Board and The American Sugarcane League. Funding support was also obtained from the Louisiana Agricultural Experiment Station and from numerous agri-chemical companies. Appreciation is expressed to Pat Bollich, Resident Director of the Central Station for providing land and equipment and to Donnie Miller, Northeast Research Station, St. Joseph, LA and Daniel Stephenson, Dean Lee Research Station, Alexandria, LA and for their assistance in planning and conducting several of these studies. Special thanks is expressed to Matthew J. Bauerle and Joseph M. Boudreaux, Research Associates, Jose Mite, Al Orgeron, and Dexter Fontenot, Graduate Assistants. Some of the research results presented in this report are from studies conducted as a portion of graduate research projects. In addition, I appreciate the patience and assistance of the student workers Bennet Schauf, Marshall Hardwick, and Koby Lanclos. Financial assistance to conduct portions of this research was provided by the following companies. Cheminova, Inc. DuPont FMC Corporation Gowan Company Helena Chemical Company Monsanto Company Syngenta Crop Protection ISK Biosciences Valent USA 5

6 Table 1. Rainfall for the 2010 growing season (March - September) at the Central Station, Ben Hur Research Farm, Baton Rouge, LA. Month Day March April May June July August September inches Total

7 Table 2. Rainfall for the 2010 growing season (March - September) at the Sugar Research Station, St. Gabriel, LA. Month Day March April May June July August September inches Total

8 Table 3. Herbicides and adjuvants evaluated in soybeans and sugarcane. Trade Common name name Manufacturer 2, 4-D Amine 4 2,4-D Nufarm T&S 2,4-D Ester 2,4-D Aatrex atrazine Syngenta Agridex crop oil concentrate Helena Ammonium sulfate - American Plant Food Corp. Asulox, Asulox XP asulam UPI Authority MTZ sulfentrazone + metribuzin FMC Bicep II Magnum metolachlor + atrazine Syngenta Callisto mesotrione Syngenta Canopy chlorimuron + metribuzin DuPont Clarity dicamba BASF Classic chlorimuron DuPont Command clomazone FMC Direx diuron Griffin Diuron diuron Agrisolutions Distinct difluenzopyr + dicamba BASF Dual II Magnum metolachlor Syngenta DuPont K4 hexazinone + diuron Syngenta Envoke trifloxysulfuron sodium Syngenta Eptam EPTC Gowan Evik ametryn Syngenta Express XP Tribenuron Dupont FirstRate cloransulam Dow Agrosciences Flexstar fomesafen Syngenta Continued. 8

9 Table 3. Continued. Trade Common name name Manufacturer Gramoxone Inteon paraquat Syngenta Harmony GT thifensulfuron Dupont Harness Extra acetochlor + atrazine Monsanto Induce nonionic surfactant Helena Karmex diuron DuPont Karmex XP diuron DuPont Liberty glufosinate Bayer Crop Science Lumax metolachor + atrazine + mesotrione Syngenta Metri DF metribuzin UPI Palisade Trinexapac Syngenta Prefix metolachlor + fomesafen Syngenta Permit halosulfuron Gowan Prowl/Prowl H 2 O pendimethalin BASF Resource flumiclorac Valent Roundup Original Max glyphosate Monsanto Roundup Power Max glyphosate Monsanto Roundup Weather Max glyphosate Monsanto Sencor metribuzin Bayer CropScience Sequence glyphosate + metolachlor Syngenta Sinbar terbacil DuPont SL-160 flazasulfuron ISK Biosciences Sodium Chlorate - Helena Spartan sulfentrazone FMC Synchrony XP chlorimuron + thifensulfuron Dupont Continued. 9

10 Table 3. Continued. Trade Common name name Manufacturer Touchdown Total glyphosate Syngenta Treflan trifluralin Dow AgroSciences Ultra Blazer acifluorfen United Phosphorus Inc. V Valent USA Valor SX flumioxazin Valent USA Velpar hexazinone DuPont Weedmaster 2,4-D + dicamba NuFarm Yukon halosulfuron + dicamba Gowan 10

11 Table 4. Bayer codes and scientific names of weed species evaluated. WSSA Common name abbreviation Scientific name annual bluegrass POAAN Poa annua L. annual sedge CYPCP Cyperus compressus L. barnyardgrass ECHCG Echinochloa crus-galli (L.) Beauv. bermudagrass CYNDA Cynodon dactylon (L.) Pers. broadleaf signalgrass BRAPP Brachiaria platyphylla (Griseb.) Nash buttercup species RANSS Ranunculus species carpetweed MOLVE Mollugo verticillata L. Carolina geranium GERCA Geranium carolinianum L. common purslane POROL Portulacca oleracea L. curly dock RUMCR Rumex crispus L. cutleaf eveningprimrose OEOLA Oenothera laciniata Hill cutleaf groundcherry PHYAN Physalis angulata L. entireleaf morningglory IPOHG Ipomoea hederacea var. integriuscula Gray fall panicum PANDI Panicum dichotomiflorum Michx. foxtail SETSP Setaria species goosegrass ELEIN Eluecine indica groundcherry PHYSS Physalis species henbit LAMAM Lamium amplexicaule L. hemp sesbania SEBEX Sesbania exaltata (Raf.) Rybd. ex A. W. Hill hophornbeam copperleaf ACCOS Acalypha ostryifolia Riddell itchgrass ROOEX Rottboellia cochinchinensis (Lour.) Clayton ivyleaf morningglory IPOHE Ipomoea hederacea (L.) Jacq. johnsongrass SORHA Sorghum halepense (L.) Pers. large crabgrass DIGSA Digitaria sanguinalis (L.) Scop. Continued. 11

12 Table 4. Continued. WSSA Common name abbreviation Scientific name little barley HORPU Hordeum pusillum Nuttall. medicago (clover) MEDSS Medicago species morningglory species IPOSS Ipomoea species mouseear chickweed CERVU Cerastium vulgatum L. nutsedge CYPSS Cyperus species pitted morningglory IPOLA Ipomoea lacunosa L. prickly sida SIDSP Sida spinosa L. purple nutsedge CYPRO Cyperus rotundus L. purslane speedwell VERPG Veronica peregrina L. red morningglory IPOCC Ipomoea coccinea L. red sprangletop LEFFI Leptochloa panicea (Retz.) Ohwi redweed MEOCO Melochia corchorifolia L. ryegrass, Italian LOLMU Lolium perenne L. ssp. Multiflorum (Lam.) Husnot shepherd s-purse CAPBP Capsella bursa-pastoris (L.) Medicus sicklepod CASOB Senna obtusifolia L. smallflower bittercress CARPA Cardamine parviflora L. smallflower morningglory IAQTA Jacquemontia tamnifolia (L.) Griseb. smellmelon CUMMD Cucumis melo L. var. dudaim Naud. spiny sowthistle SONAS Sonchus asper (L.) Hill spotted burclover MEDAB Medicago arabica (L.) Huds. spotted spurge EPHMA Chamaesyce maculata (L.) Small spreading dayflower COMDI Commelina diffusa Burm. f. velvetleaf ABUTH Abutilion theophrasti Medik. Continued. 12

13 Table 4. Continued. WSSA Common name abbreviation Scientific name Virginia pepperweed LEPVI Lepidium virginicum L. white clover TRFRE Trifolium repens L. wild poinsettia EPHHL Euphorbia heterophylla L. yellow nutsedge CYPES Cyperus esculentus L. 13

14 Table 5. Miscellaneous abbreviations used in the weed control studies. ai/a Amt AS AP Bdcst bu/a B/L CEC CO 2 bkpk col cot CV DAP DAT DBP DF DG EC F fb FF Fm G GPA gr cover Grow stg ht ht/collr ht/lleaf ht:node in/col in/lftp lbs Continued. Active ingredient per acre Amount Aqueous solution After planting Broadcast application Bushels per acre Broadleaf species Cation Exchange Capacity CO 2 -pressurized backpack sprayer Collar Cotyledon Coefficient of variation Days after planting Days after treatment Days before planting Dry flowable Dispersible granule Emulsifiable concentrate Flowable Followed by Flat fan nozzle Formulation Granular Gallons per acre Ground cover Growth stage Height Height to top visible collar Height to tip of longest leaf Height to node ratio Inches to last visible collar Inches to tip of longest leaf Pounds 14

15 Table 5. Continued. lb/a Pounds of product per acre lb ae/a Pounds of acid equivalent per acre lb ai/a Pounds active ingredient per acre on broadcast basis lb/bu Pounds per bushel lf Leaf L Liquid LSD Least significant difference ME Micro-encapsulated # noz Number of nozzels N/A Not applicable NAWF Nodes above white flower OM Organic matter oz/a Ounces product per acre p. cloudy Partly cloudy PDIR Postemergence directed plnt Plant popltn Population POST (x) Postemergence overtop application (first, second, etc.) PPBD Preplant burndown PPI Preplant soil incorporated pr/a Product per acre PRE Preemergence surface application psi Pounds per square inch pressure rep Replication SC Soluble concentration sq Square std Standard til Tillers trctrca Tractor compressed air TRS Theoretical recoverable sugar V (x) Refers to soybean growth stage e.g. V4=vegetative with 3 fully expanded trifoliate leaves Continued. 15

16 Table 5. Continued. Trt No Treatment number v/v Volume/volume basis vin Vining WAE Weeks after emergence WAT Weeks after treatment WBP Weeks before planting WG Water dispersible granule WP Wettable powder wt/p Weight per plant wt/st Weight per stem w/w Weight/weight basis % emerg. Percent panicle emergence 16

17 Louisiana State University Department of Agronomy and Environmental Management Evaluation of CHA-016 at Planting Experiment number...: 10SC01JG Location...: Sugar Research Station St. Gabriel, La Experimental design...: Randomized Complete Block Number of reps...: 3 Plot size...: 6X35ft. Row width/# per plot...: 72 /1 Soil type...: silt loam OM (%)...: 1.0 ph...: 5.9 Planting date...: Harvest date...: N/A Crop/Variety...: Sugarcane/HoCP Uniform std. treatment...: N/A Application type...: PRE A Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 9:30-10:00 Incorporation equipment...: N/A Incorporation depth...: N/A Air/Soil temperature (F)...: 79/80 Wind (mph/direction)...: 5-7/SE Cloud cover (%)...: 80 Relative humidity (%)...: 40 Soil/Leaf surface moist...: Moist/N/A Crop stage/height...: N/A Sprayer type/mph...: trctrca/5.0 Nozzle type/size...: FF/1102VS Boom ht/#noz/spacing (in)...: 18 /4/18 GPA/psi (at nozzle)...: 15/35 Applied by...: Boudreaux Weed species... : population per ft 2 /height/# leaves N/A Rainfall (in.) 0-24 hr/1-3 days... : 0.70/ days/2nd week... : 0.37/2.06 3rd week/4th week... : 4.77/3.33 Comments: CHA-016 is a formulation of clomazone. WABL= winter annual broadleaf weeds. 17

18 Evaluation of CHA-016 at Planting Trial ID: 10SC01JG Location: St. Gabriel Study Director: Joseph M. Boudreaux Pest Code LOLMU WA BL Crop Code CANE 26/Oct/ /Mar/ /Mar/2010 Rating Data Type Shoots Control Control Rating Unit #/plot % % 1 METRIBUZIN lb ai/a 32 oz/a PRE A 80a 88a 92a 2 METRIBUZIN 75 3 lb ai/a 64 oz/a PRE A 91a 92a 93a 3 METRIBUZIN lb ai/a 32 oz/a PRE A 123a 80a 78a PROWL H lb ai/a 67.4 fl oz/a PRE A 4 CHA lb ai/a 42.7 fl oz/a PRE A 92a 87a 88a 5 CHA lb ai/a 53.3 fl oz/a PRE A 87a 88a 85a 6 CHA lb ai/a 53.3 fl oz/a PRE A 84a 87a 97a METRIBUZIN lb ai/a 32 oz/a PRE A 7 SENCOR lb ai/a 32 oz/a PRE A 64a 80a 83a 8 UNTREATED 71a 0b 0b LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

19 Louisiana State University Department of Agronomy and Environmental Management Bermudagrass Fallow Programs Test Experiment number...: 10SC05JG Location...: Sugar Research Station St. Gabriel, La Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 18X70 ft. Row width/# per plot...: 72 /3 Soil type...: silt loam OM (%)...: 1.0 ph...: 5.9 Planting date...: Harvest date...: N/A Crop/Variety...: Sugarcane/HoCP Uniform std. treatment...: 2lbs/A on 9/13/10 Application type...: POST A POST B Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 2:00-2:30 9:20-9:40 Incorporation equipment...: N/A N/A Incorporation depth...: N/A N/A Air/Soil temperature (F)...: 90/89 81/86 Wind (mph/direction)...: 8-9/SW 2-3/NE Cloud cover (%)...: N/A N/A Relative humidity (%)...: Soil/Leaf surface moist...: Moist/Dry Moist/Moist Crop stage/height...: N/A N/A Sprayer type/mph...: CO 2 bkpk/3.0 CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS FF/11002VS Boom ht/#noz/spacing (in)...: 18 /4/18 18 /4/18 GPA/psi (at nozzle)...: 15/25 15/25 Applied by...: Bauerle Bauerle Weed species... : population per ft 2 /height/# leaves CYNDA...: 5-10/2-5 /3-6 runners CYPSS...: 6-10 runners 6-8 /5-6 lf Rainfall (in.) 0-24 hr/1-3 days...: 0.00/ / days/2nd week...: 1.44/ /1.73 3rd week/4th week...: 0.01/ /0.04 Comments: 19

20 Fallow Bermudagrass Control Treatments: 1. Destroy stubble (disk twice May 1; disk twice May 26) Bottom plow (10 to 12 inches deep) May 27 Chisel plow June 18 and disk June 21 Bed up (two operations) June 21 and 22 Roundup Original Max at 46 oz/a (July 12) Roundup Original Max at 46 oz/a (August 11) Opened rows and hand planted (September 10) 2. Destroy stubble (disk twice May 1; disk twice May 26) Chisel plow June 18 and disk June 21 Bed up (two operations) June 21 and 22 Roundup Original Max at 46 oz/a (July 12) Roundup Original Max at 46 oz/a (August 11) Opened rows and hand planted (September 10) 3. Destroy stubble (disk twice May 1; disk twice May 26) Chisel plow June 18 and disk June 21 Bed up (two operations) June 21 and 22 Re-hip beds (July 12) Roundup Original Max at 46 oz/a (August 11) Opened rows and hand planted (September 10) 4. Destroy stubble (disk twice May 1; disk twice May 26) Chisel plow June 18 and disk June 21 Chisel and disk July 16 and bed up (two operations) Roundup Original Max at 46 oz/a (August 11) Opened rows and hand planted (September 10) 2010 Bermudagrass Fallow Programs Test Sugar Research Station Griffin and Salassi Plot size: 3 18ft by 70 ft Rainfall: 3.89 inches May 1 May inches May 27-June inches June 22-July inches July 18-Aug inches Aug 13-Sep inches Sep 8-Oct inches Oct 4-Oct inches Oct 29-Nov 26 Total =

21 Bermudagrass Fallow Programs Test Trial ID: 10SC05JG Location: St. Gabriel Study Director: Joseph M. Boudreaux Pest Code CYNDA CYNDA 26/Jul/ /Aug/ /Oct/2010 Rating Data Type GroundCover GroundCover Shoot Count Rating Unit % % # No. Name Conc Rate Unit Rate Rate Unit Stage Code 1 Destroy Stubble/May 5c 17b 85a Botton Plow/May Chisel & Disk/June Bed Up/June Roundup/July Roundup/August 2 Destroy Stubble/May 4c 28b 85a Chisel & Disk/June Bed Up/June Roundup/July Roundup/August 3 Destroy Stubble/May 39a 28b 76a Chisel & Disk/June Bed Up/June Rehip/July Roundup/August 4 Destroy Stubble/May 20b 56a 91a Chisel & Disk/June Chisel & Disk/July Bed Up/July Roundup/August LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

22 Bermudagrass Fallow Programs Test Trial ID: 10SC05JG Location: St. Gabriel Study Director: Joseph M. Boudreaux Pest Code CYNDA 23/Nov/ /Nov/2010 Rating Data Type GroundCover Shoot Count Rating Unit % # No. Name Conc Rate Unit Rate Rate Unit Stage Code 1 Destroy Stubble/May 11a 104a Botton Plow/May Chisel & Disk/June Bed Up/June Roundup/July Roundup/August 2 Destroy Stubble/May 16a 99a Chisel & Disk/June Bed Up/June Roundup/July Roundup/August 3 Destroy Stubble/May 25a 103a Chisel & Disk/June Bed Up/June Rehip/July Roundup/August 4 Destroy Stubble/May 21a 108a Chisel & Disk/June Chisel & Disk/July Bed Up/July Roundup/August LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

23 Louisiana State University Department of Agronomy and Environmental Management Evaluation of Corvus, Capreno, Laudis, and Callisto in Sugarcane Experiment number...: 10SC06JG Location...: Sugar Research Station St. Gabriel, La Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 6X35 ft. Row width/# per plot...: 72 /1 Soil type...: silt loam OM (%)...: 1.0 ph...: 5.9 Planting date...: Harvest date...: N/A Crop/Variety...: Sugarcane/HoCP Uniform std. treatment...: N/A Application type...: PRE A POST A Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 10:00-10:15 9:30-9:45 Incorporation equipment...: N/A N/A Incorporation depth...: N/A N/A Air/Soil temperature (F)...: 89/86 68/75 Wind (mph/direction)...: 6-7/E 7-8/NW Cloud cover (%)...: N/A N/A Relative humidity (%)...: Soil/Leaf surface moist...: Dry/N/A Dry/Moist Crop stage/height...: N/A 3-4lf/12-15 Sprayer type/mph...: trctrca/3.75 CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS FF/8002VS Boom ht/#noz/spacing (in)...: 20 /4/20 18 /4/18 GPA/psi (at nozzle)...: 15/30 15/25 Applied by...: Boudreaux Bauerle Weed species... : population per ft 2 /height/# leaves IPOSS...: N/A 0-1/6-8 runners Rainfall (in.) 0-24 hr/1-3 days...: 0.00/ / days/2nd week...: 1.44/ /0.78 3rd week/4th week...: 0.01/ /0.84 Comments: Rainfall from planting to first shoot count was 1.69 inches. Corvus =Isoxaflutole + Thiencarbazone-methyl (5.6 oz/a); Caperno = tembotrione + thiencarbazone-methyl (3oz/A); Laudis = tembotrione (3oz/A); Callisto = mesotiron (3oz/A). Application of Corvus and Caperno pre-emergence did not cause visual plant injury. Crop injury occured when Caperno or Laudis was applied Postemergence. Callisto did not cause injury post emergence. WA BL= winter annual broadleaf weeds. WA G= winter annual grass weeds. 23

24 Evaluation of Corvus, Capreno, Laudis, and Callisto in Sugarcane Trial ID: 10SC06JG Study Director: Matthew J. Bauerle Pest Code WA G 26/Oct/ /Nov/ /Nov/2010 Rating Data Type Shoot Count Crop Injury Control Rating Unit # % % 1 Corvus lb ai/a 5.6 fl oz/a PRE A 93a 3c 61a 2 Capreno lb ai/a 3 fl oz/a PRE A 116a 0c 56a 3 Capreno lb ai/a 3 fl oz/a POST B 93a 49a 91a Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 4 Laudis lb ai/a 3 fl oz/a POST B 115a 33b 68a Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 5 Callisto lb ai/a 3 fl oz/a POST B 115a 0c 60a Atrazine lb ai/a 1 pt/a POST B Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 6 Sencor lb ai/a 1.5 lb/a PRE A 106a 0c 86a 7 Nontreated 98a 0c 0b LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

25 Evaluation of Corvus, Capreno, Laudis, and Callisto in Sugarcane Trial ID: 10SC06JG Study Director: Matthew J. Bauerle Pest Code WA BL 23/Nov/ /Nov/ /Nov/2010 Rating Data Type Control Shoot Count Average Ht Rating Unit % # in 1 Corvus lb ai/a 5.6 fl oz/a PRE A 56bc 97a 21a 2 Capreno lb ai/a 3 fl oz/a PRE A 45c 111a 21a 3 Capreno lb ai/a 3 fl oz/a POST B 93a 96a 13b Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 4 Laudis lb ai/a 3 fl oz/a POST B 58bc 138a 19a Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 5 Callisto lb ai/a 3 fl oz/a POST B 63bc 125a 20a Atrazine lb ai/a 1 pt/a POST B Agridex % v/v 1 % v/v POST B Ammonium Sulfate lb ai/a 2 lb/a POST B 6 Sencor lb ai/a 1.5 lb/a PRE A 84ab 103a 19a 7 Nontreated 0d 86a 20a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) 0.037* Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

26 Louisiana State University School of Plant, Environmental, and Soil Sciences Eptam at Planting Study Experiment number...: 10SC01JM Location...: Sugar Research Station -St. Gabriel, LA Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 12X40ft. Row width/# per plot...: 72 /2 Soil type...: silt loam OM (%)...: 1.0 ph...: 5.9 Planting date...: Harvest date...: N/A Crop/Variety...: Sugarcane/540 Uniform std. treatment...: N/A Application type...: PRE A Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 9:00-9:30am Incorporation equipment...: rolling cultivator Incorporation depth...: 2-3 Air/Soil temperature (F)...: 79/80 Wind (mph/direction)...: 5-7/SE Cloud cover (%)...: 80 Relative humidity (%)...: 40 Soil/Leaf surface moist...: Moist/N/A Crop stage/height...: N/A Sprayer type/mph...: trctrca/5.0 Nozzle type/size...: FF/1102VS Boom ht/#noz/spacing (in)...: 18 /4/18 GPA/psi (at nozzle)...: 15/35 Applied by...: Boudreaux Weed species (population/ft 2 ).. : height/# leaves N/A Rainfall (in.) 0-24 hr/1-3 days... : 0.70/ days/2nd week... : 0.98/1.09 3rd week/4th week... : N/A/N/A Comments: 26

27 Eptam at Planting Study Trial ID: 10SC01JM Location: St. Gabriel Study Director: Jose Mite Description Poa Annual Sow Thistle 23/Oct/2009 5/Feb/2010 5/Feb/ /Mar/2010 Rating Data Type # Shoot % control % control Shoot/# 1 Command lb ai/a 3.33 pt/a PRE A 97a 43b 79a 117a Direx lb ai/a 2.5 qt/a PRE A 2 Sencor lb ai/a 2 lb/a PRE A 92a 59ab 65a 111a 3 Eptam lb ai/a 3 pt/a PRE A 78a 0c 0b 86a 4 Eptam lb ai/a 5 pt/a PRE A 80a 0c 0b 79a 5 Eptam lb ai/a 7 pt/a PRE A 72a 3c 13b 70a 6 Treflan 4 3 lb ai/a 3 qt/a PRE A 54a 75a 8b 71a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) 0.021* * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

28 Eptam at Planting Study Trial ID: 10SC01JM Location: St. Gabriel Study Director: Jose Mite 30/Apr/2010 Rating Data Type Shoot/# 1 Command lb ai/a 3.33 pt/a PRE A 171a Direx lb ai/a 2.5 qt/a PRE A 2 Sencor lb ai/a 2 lb/a PRE A 172a 3 Eptam lb ai/a 3 pt/a PRE A 148a 4 Eptam lb ai/a 5 pt/a PRE A 135a 5 Eptam lb ai/a 7 pt/a PRE A 124a 6 Treflan 4 3 lb ai/a 3 qt/a PRE A 117a LSD (P=.05) 43.3 Standard Deviation 28.7 CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

29 Experiment number...: 10SB01JG Location...: Ben Hur Research Farm Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 5X30 ft. Row width/# per plot...: 15 /3 Soil type...: clay loam OM (%)...: 1.9 ph...: 6.3 Planting date...: Harvest date...: Crop/Variety...: Soybeans/AsGrow 5606 Uniform std. treatment...: N/A Application type...: POST A Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 10:00-11:00 Incorporation equipment...: N/A Incorporation depth...: N/A Air/Soil temperature (F)...: 92/91 Wind (mph/direction)...: 3-4/E Cloud cover (%)...: N/A Relative humidity (%)...: 51 Soil/Leaf surface moist...: Moist/Dry Crop stage/height...: V3-V4 Sprayer type/mph...: CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS Boom ht/#noz/spacing (in)...: 18 /4/18 GPA/psi (at nozzle)...: 15/25 Applied by...: Bauerle Weed species... : population per ft 2 /height/# leaves N/A Rainfall (in.) 0-24 hr/1-3 days... : 0.66/ days/2nd week... : 0.48/0.81 3rd week/4th week... : 1.27/0.73 Louisiana State University School of Plant, Environmental, and Soil Sciences V3-V4 Soybean Dicamba Drift Study Comments: 29

30 V3-V4 Soybean Dicamba Drift Study Trial ID: 10SB01JG Study Director: Joseph M. Boudreaux 28/Jun/2010 7/Jul/ /Jul/ /Jul/2010 Rating Data Type Crop Injury Crop Injury Crop Injury Height Rating Unit % % % in 1 Clarity lb ae/a 8 oz/a V3-V4 POST A 71a 88a 90a 10.7g 2 Clarity lb ae/a 4 oz/a V3-V4 POST A 53b 74b 78b 13.8f 3 Clarity lb ae/a 2 oz/a V3-V4 POST A 38c 63c 64c 17.5e 4 Clarity lb ae/a 1 oz/a V3-V4 POST A 35c 64c 55d 19.2de 5 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 24d 53d 44e 20.7cd 6 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 16e 50d 34f 22.4c 7 Clarity lb ae/a oz/a V3-V4 POST A 13e 48d 25g 24.5b 8 Nontreated 0f 0e 0h 32.4a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) 0.033* Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

31 V3-V4 Soybean Dicamba Drift Study Trial ID: 10SB01JG Study Director: Joseph M. Boudreaux 22/Jul/ /Oct/ /Oct/2010 Rating Data Type Width Height Weight Rating Unit in in lb 1 Clarity lb ae/a 8 oz/a V3-V4 POST A 10.6e 21.6f 2.65c 2 Clarity lb ae/a 4 oz/a V3-V4 POST A 11.4e 26.6e 5.78b 3 Clarity lb ae/a 2 oz/a V3-V4 POST A 15.9d 29.4d 7.29a 4 Clarity lb ae/a 1 oz/a V3-V4 POST A 16.9cd 32.5c 7.59a 5 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 17.9bcd 33.6c 7.84a 6 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 19.9ab 35.8c 8.16a 7 Clarity lb ae/a oz/a V3-V4 POST A 18.9bc 38.7b 7.64a 8 Nontreated 21.8a 42.0a 8.27a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

32 V3-V4 Soybean Dicamba Drift Study Trial ID: 10SB01JG Study Director: Joseph M. Boudreaux 18/Oct/ /Oct/ /Oct/2010 Rating Data Type Moisture Test Weight Seed Weight Rating Unit % lb/bu grams Sample Size Clarity lb ae/a 8 oz/a V3-V4 POST A 11.8a 43.6a 12.82b 2 Clarity lb ae/a 4 oz/a V3-V4 POST A 12.3a 48.3a 12.52b 3 Clarity lb ae/a 2 oz/a V3-V4 POST A 12.7a 47.1a 13.00b 4 Clarity lb ae/a 1 oz/a V3-V4 POST A 12.4a 48.6a 13.35b 5 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 12.6a 47.3a 13.83b 6 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 12.5a 47.4a 13.96b 7 Clarity lb ae/a oz/a V3-V4 POST A 12.2a 51.0a 13.93b 8 Nontreated 12.7a 43.7a 15.23a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

33 V3-V4 Soybean Dicamba Drift Study Trial ID: 10SB01JG Study Director: Joseph M. Boudreaux 18/Oct/2010 Rating Data Type Yield Rating Unit bu/a 11 1 Clarity lb ae/a 8 oz/a V3-V4 POST A 15.6c 2 Clarity lb ae/a 4 oz/a V3-V4 POST A 33.9b 3 Clarity lb ae/a 2 oz/a V3-V4 POST A 42.5a 4 Clarity lb ae/a 1 oz/a V3-V4 POST A 44.4a 5 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 45.8a 6 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 47.7a 7 Clarity lb ae/a oz/a V3-V4 POST A 44.8a 8 Nontreated 48.2a LSD (P=.05) 4.26 Standard Deviation 2.88 CV 7.14 Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

34 Louisiana State University School of Plant, Environmental, and Soil Sciences R1 Soybean Dicamba Drift Study Experiment number...: 10SB02JG Location...: Ben Hur Research Farm Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 5X30 ft. Row width/# per plot...: 15 /3 Soil type...: clay loam OM (%)...: 1.9 ph...: 6.3 Planting date...: Harvest date...: Crop/Variety...: Soybeans/AsGrow 5606 Uniform std. treatment...: N/A Application type...: POST A Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 8:30-9:00 Incorporation equipment...: N/A Incorporation depth...: N/A Air/Soil temperature (F)...: 87/81 Wind (mph/direction)...: 1-2/NW Cloud cover (%)...: 0 Relative humidity (%)...: 64 Soil/Leaf surface moist...: Moist/Moist Crop stage/height...: R1/25-30 Sprayer type/mph...: CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS Boom ht/#noz/spacing (in)...: 18 /4/18 GPA/psi (at nozzle)...: 15/25 Applied by...: Bauerle Weed species... : population per ft 2 /height/# leaves N/A Rainfall (in.) 0-24 hr/1-3 days... : 0.38/ days/2nd week... : 0.00/0.73 3rd week/4th week... : 0.57/1.74 Comments: 34

35 R1 Soybean Dicamba Drift Study Trial ID: 10SB02JG Study Director: Joseph M. Boudreaux 15/Jul/ /Jul/2010 9/Aug/2010 9/Aug/2010 Rating Data Type Crop Injury Crop Injury Crop Injury Avg Height Rating Unit % % % in 1 Clarity lb ae/a 2 oz/a V3-V4 POST A 66a 75a 85a 18.5g 2 Clarity lb ae/a 1 oz/a V3-V4 POST A 48b 55b 71b 23.4f 3 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 38c 43c 63c 24.5ef 4 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 33cd 41c 59c 25.9de 5 Clarity lb ae/a oz/a V3-V4 POST A 29d 31d 46d 26.9d 6 Clarity lb ae/a oz/a V3-V4 POST A 16e 24e 43d 29.9c 7 Clarity lb ae/a oz/a V3-V4 POST A 10e 18f 28e 33.1b 8 Nontreated 0f 0g 0f 44.1a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

36 R1 Soybean Dicamba Drift Study Trial ID: 10SB02JG Study Director: Joseph M. Boudreaux 9/Aug/ /Oct/ /Oct/2010 Rating Data Type Avg Width Height Weight Rating Unit in in lb 1 Clarity lb ae/a 2 oz/a V3-V4 POST A 16.9d 16.4e 1.5e 2 Clarity lb ae/a 1 oz/a V3-V4 POST A 17.3d 20.4d 3.3d 3 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 17.9cd 23.5cd 4.8c 4 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 19.3bcd 22.7cd 5.8bc 5 Clarity lb ae/a oz/a V3-V4 POST A 20.3bc 24.4cd 5.2bc 6 Clarity lb ae/a oz/a V3-V4 POST A 21.6b 27.2bc 6.1bc 7 Clarity lb ae/a oz/a V3-V4 POST A 21.0b 30.2b 6.9b 8 Nontreated 24.6a 42.4a 9.1a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

37 R1 Soybean Dicamba Drift Study Trial ID: 10SB02JG Study Director: Joseph M. Boudreaux 13/Oct/ /Oct/ /Oct/2010 Rating Data Type Moisture Test Weight Seed Weight Rating Unit % lb/bu grams Sample Size Clarity lb ae/a 2 oz/a V3-V4 POST A 12.0a 38.9b 14.61b 2 Clarity lb ae/a 1 oz/a V3-V4 POST A 12.2a 42.6ab 14.27b 3 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 11.9a 49.2ab 14.00b 4 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 11.8a 52.0a 14.29b 5 Clarity lb ae/a oz/a V3-V4 POST A 11.6a 50.4a 14.08b 6 Clarity lb ae/a oz/a V3-V4 POST A 11.5a 44.6ab 14.37b 7 Clarity lb ae/a oz/a V3-V4 POST A 12.1a 47.9ab 13.91b 8 Nontreated 12.8a 48.8ab 16.21a LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) 0.007* * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

38 R1 Soybean Dicamba Drift Study Trial ID: 10SB02JG Study Director: Joseph M. Boudreaux Rating Data Type Rating Unit 13/Oct/2010 Yield bu/a 1 Clarity lb ae/a 2 oz/a V3-V4 POST A 8.7e 2 Clarity lb ae/a 1 oz/a V3-V4 POST A 19.5d 3 Clarity lb ae/a 0.5 oz/a V3-V4 POST A 28.4c 4 Clarity lb ae/a 0.25 oz/a V3-V4 POST A 34.3bc 5 Clarity lb ae/a oz/a V3-V4 POST A 30.8bc 6 Clarity lb ae/a oz/a V3-V4 POST A 35.8bc 7 Clarity lb ae/a oz/a V3-V4 POST A 40.2b 8 Nontreated 52.7a LSD (P=.05) 7.84 Standard Deviation 5.31 CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

39 Louisiana State University School of Plant, Environmental, and Soil Sciences Value of PRE Herbicides in Roundup Ready Soybean Experiment number...: 10SB03JG Location...: Ben Hur Research Farm Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 5X30 ft. Row width/# per plot...: 15 /3 Soil type...: clay loam OM (%)...: 1.9 ph...: 6.3 Planting date...: Harvest date...: N/A Crop/Variety...: Soybeans/DeltaGrow 5555R Uniform std. treatment...: N/A Application type...: PRE A POST B POST C Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 8:00-9:00 8:15-8:45 8:30-9:00 Incorporation equipment...: cultivator N/A N/A Incorporation depth...: 2 N/A N/A Air/Soil temperature (F)...: 78/80 87/89 88/87 Wind (mph/direction)...: 2-4/E 1-2/S 4-6/NE Cloud cover (%)...: N/A N/A N/A Relative humidity (%)...: Soil/Leaf surface moist...: Moist/N/A Moist/Moist Moist/Moist Crop stage/height...: N/A N/A N/A Sprayer type/mph...: CO 2 bkpk/3.0 CO 2 bkpk/3.0 CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS FF/11002VS FF/11002VS Boom ht/#noz/spacing (in)...: 18 /4/18 18 /4/18 18 /4/18 GPA/psi (at nozzle)...: 15/25 15/25 15/25 Applied by...: Bauerle Bauerle Bauerle Weed species... : population per ft 2 /height/# leaves ECHCG...: 5-7/2-6 /3 1-2/2-3 /3-4 SEBEX...: 2-3/2-6 / /2-4 /6-10 IPOHE...: 1-3/2-4 / /4-6 /8-12 SIDSP...: 2-6/1-2 /2-4 ELEIN...: 3-6/ Rainfall (in.) 0-24 hr/1-3 days...: 0.00/ / / days/2nd week...: 1.91/ / /1.11 3rd week/4th week...: 0.04/ / /0.73 Comments: 39

40 Value of PRE Herbicides in Roundup Ready Soybean Trial ID: 10SB03JG Study Director: Joseph M. Boudreaux Pest Code ECHCG MEOCO SEBEX 15/Jun/ /Jun/ /Jun/2010 Rating Data Type Control Control Control Rating Unit % % % 1 Valor SX lb ai/a 2 oz/a PRE A 86c 96a 90a Roundup PowerMax lb ai/a 23.3 oz/a POST C 2 Prefix lb ai/a 2 pt/a PRE A 96ab 94a 90a Roundup PowerMax lb ai/a 23.3 oz/a POST C 3 Authority MTZ lb ai/a 14 oz/a PRE A 96ab 99a 88a Roundup PowerMax lb ai/a 23.3 oz/a POST C 4 Boundary lb ai/a 1.5 pt/a PRE A 98ab 98a 85a Roundup PowerMax lb ai/a 23.3 oz/a POST C 5 Sencor lb ai/a lb/a PRE A 98ab 98a 98a Roundup PowerMax lb ai/a 23.3 oz/a POST C 6 Canopy lb ai/a 10 oz/a PRE A 95ab 98a 89a Roundup PowerMax lb ai/a 23.3 oz/a POST C 7 Treflan 4 1 lb ai/a 2 pt/a PPI A 93b 70b 68b Roundup PowerMax lb ai/a 23.3 oz/a POST C 8 Treflan 4 1 lb ai/a 2 pt/a PPI A 99a 100a 95a Sencor lb ai/a lb/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 9 Treflan 4 1 lb ai/a 2 pt/a PPI A 100a 99a 95a Canopy lb ai/a 10 oz/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 10 Roundup PowerMax lb ai/a 23.3 oz/a POST B 0d 0c 0c 11 Roundup PowerMax lb ai/a 23.3 oz/a POST B 0d 0c 0c Roundup PowerMax lb ai/a 23.3 oz/a POST C 12 Nontreated 0d 0c 0c LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) * 0.028* Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

41 Value of PRE Herbicides in Roundup Ready Soybean Trial ID: 10SB03JG Study Director: Joseph M. Boudreaux Pest Code IPOLA ECHCG 15/Jun/ /Jun/ /Jun/2010 Rating Data Type Control Crop Injury Control Rating Unit % % % 1 Valor SX lb ai/a 2 oz/a PRE A 93a 5a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 2 Prefix lb ai/a 2 pt/a PRE A 83ab 4a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 3 Authority MTZ lb ai/a 14 oz/a PRE A 95a 3a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 4 Boundary lb ai/a 1.5 pt/a PRE A 85a 5a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 5 Sencor lb ai/a lb/a PRE A 88a 7a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 6 Canopy lb ai/a 10 oz/a PRE A 83ab 0a 99a Roundup PowerMax lb ai/a 23.3 oz/a POST C 7 Treflan 4 1 lb ai/a 2 pt/a PPI A 66b 0a 99a Roundup PowerMax lb ai/a 23.3 oz/a POST C 8 Treflan 4 1 lb ai/a 2 pt/a PPI A 89a 3a 100a Sencor lb ai/a lb/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 9 Treflan 4 1 lb ai/a 2 pt/a PPI A 96a 3a 100a Canopy lb ai/a 10 oz/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 10 Roundup PowerMax lb ai/a 23.3 oz/a POST B 0c 0a 99a 11 Roundup PowerMax lb ai/a 23.3 oz/a POST B 0c 0a 100a Roundup PowerMax lb ai/a 23.3 oz/a POST C 12 Nontreated 0c 0a 0b LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) * Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

42 Value of PRE Herbicides in Roundup Ready Soybean Trial ID: 10SB03JG Study Director: Joseph M. Boudreaux Pest Code IPOHE SIDSP SEBEX 28/Jun/ /Jun/ /Jun/2010 Rating Data Type Control Control Control Rating Unit % % % 1 Valor SX lb ai/a 2 oz/a PRE A 89a 93a 85a Roundup PowerMax lb ai/a 23.3 oz/a POST C 2 Prefix lb ai/a 2 pt/a PRE A 81a 91a 87a Roundup PowerMax lb ai/a 23.3 oz/a POST C 3 Authority MTZ lb ai/a 14 oz/a PRE A 85a 93a 88a Roundup PowerMax lb ai/a 23.3 oz/a POST C 4 Boundary lb ai/a 1.5 pt/a PRE A 80a 91a 88a Roundup PowerMax lb ai/a 23.3 oz/a POST C 5 Sencor lb ai/a lb/a PRE A 80a 92a 87a Roundup PowerMax lb ai/a 23.3 oz/a POST C 6 Canopy lb ai/a 10 oz/a PRE A 76a 91a 87a Roundup PowerMax lb ai/a 23.3 oz/a POST C 7 Treflan 4 1 lb ai/a 2 pt/a PPI A 91a 84ab 74ab Roundup PowerMax lb ai/a 23.3 oz/a POST C 8 Treflan 4 1 lb ai/a 2 pt/a PPI A 84a 95a 90a Sencor lb ai/a lb/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 9 Treflan 4 1 lb ai/a 2 pt/a PPI A 91a 95a 87a Canopy lb ai/a 10 oz/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 10 Roundup PowerMax lb ai/a 23.3 oz/a POST B 84a 81b 65b 11 Roundup PowerMax lb ai/a 23.3 oz/a POST B 84a 93a 77ab Roundup PowerMax lb ai/a 23.3 oz/a POST C 12 Nontreated 0b 0c 0c LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

43 Value of PRE Herbicides in Roundup Ready Soybean Trial ID: 10SB03JG Study Director: Joseph M. Boudreaux Pest Code ECHCG IPOLA SEBEX 9/Jul/2010 9/Jul/2010 9/Jul/2010 Rating Data Type Control Control Control Rating Unit % % % 1 Valor SX lb ai/a 2 oz/a PRE A 95a 83a 68ab Roundup PowerMax lb ai/a 23.3 oz/a POST C 2 Prefix lb ai/a 2 pt/a PRE A 95a 94a 88a Roundup PowerMax lb ai/a 23.3 oz/a POST C 3 Authority MTZ lb ai/a 14 oz/a PRE A 95a 86a 83a Roundup PowerMax lb ai/a 23.3 oz/a POST C 4 Boundary lb ai/a 1.5 pt/a PRE A 95a 91a 81a Roundup PowerMax lb ai/a 23.3 oz/a POST C 5 Sencor lb ai/a lb/a PRE A 95a 88a 89a Roundup PowerMax lb ai/a 23.3 oz/a POST C 6 Canopy lb ai/a 10 oz/a PRE A 93a 85a 78a Roundup PowerMax lb ai/a 23.3 oz/a POST C 7 Treflan 4 1 lb ai/a 2 pt/a PPI A 94a 91a 84a Roundup PowerMax lb ai/a 23.3 oz/a POST C 8 Treflan 4 1 lb ai/a 2 pt/a PPI A 95a 86a 73a Sencor lb ai/a lb/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 9 Treflan 4 1 lb ai/a 2 pt/a PPI A 95a 90a 85a Canopy lb ai/a 10 oz/a PRE A Roundup PowerMax lb ai/a 23.3 oz/a POST C 10 Roundup PowerMax lb ai/a 23.3 oz/a POST B 95a 91a 49b 11 Roundup PowerMax lb ai/a 23.3 oz/a POST B 95a 89a 82a Roundup PowerMax lb ai/a 23.3 oz/a POST C 12 Nontreated 0b 0b 0c LSD (P=.05) Standard Deviation CV Grand Mean Bartlett's X P(Bartlett's X2) Replicate F Replicate Prob(F) Treatment F Treatment Prob(F)

44 Louisiana State University School of Plant, Environmental, and Soil Sciences Program Approach for Weed Control in Liberty Link Soybean Experiment number...: 10SB05JG Location...: Ben Hur Research Farm Experimental design...: Randomized Complete Block Number of reps...: 4 Plot size...: 5X30 ft. Row width/# per plot...: 15 /3 Soil type...: clay loam OM (%)...: 1.9 ph...: 6.3 Planting date...: Harvest date...: N/A Crop/Variety...: Soybeans/Merschman 949LL Uniform std. treatment...: N/A Application type...: PRE A POST B POST C POST D Date applied (mm-dd-yy)...: Time (hh:mm-hh:mm)...: 4:45-5:30 9:00-9:30 11:00-11:30 1:00-1:30 Incorporation equipment...: N/A N/A N/A N/A Incorporation depth...: N/A N/A N/A N/A Air/Soil temperature (F)...: 69/81 89/82 94/94 92/91 Wind (mph/direction)...: 0-1/E 1-3/S 3-4/SE 4-5/SW Cloud cover (%)...: N/A 30 N/A 0 Relative humidity (%)...: Soil/Leaf surface moist...: Moist/N/A Moist/Dry Dry/Dry Moist/Dry Crop stage/height...: N/A V1-V2/4-6 V4/12 R1/25-30 Sprayer type/mph...: CO 2 bkpk/3.0 CO 2 bkpk/3.0 CO 2 bkpk/3.0 CO 2 bkpk/3.0 Nozzle type/size...: FF/11002VS FF/11002VS FF/11002VS FF/11002VS Boom ht/#noz/spacing (in)...: 18 /4/18 18 /4/18 18 /4/18 18 /4/18 GPA/psi (at nozzle)...: 15/25 15/25 15/25 15/25 Applied by...: Bauerle Bauerle Bauerle Bauerle Weed species... : population per ft 2 /height/# leaves IPOLA...: 1-3/2 /1 0-2/3-6 / /1-4 /3cot ECHCG...: 12-15/1 / /4-8 / /2-4 /3-4 MEOCO...: 15-20/0.5 /1 1-2/1-3 /4-6 SIDSP...: 1-2/2-3 /2-3 Rainfall (in.) 0-24 hr/1-3 days...: 0.00/ / / / days/2nd week...: 1.34/ / / /0.73 3rd week/4th week...: 0.04/ / / /1.74 Comments: Because of morningglory presence at soybean maturity (some in the plots and some encroaching from the borders), plot yield was not determined. For the Harvestable (Yes or No) data, a zero indicates that morningglory was too severe to allow for plot harvest. 44

45 Program Approach for Weed Control in Liberty Link Soybean Trial ID: 10SB05JG Study Director: Daniel Stephenson Investigator: Daniel O. Stephenson, IV Pest Code ECHCG SIDSP IPOLA 15/Jun/ /Jun/ /Jun/2010 Rating Data Type Control Control Control Rating Unit % % % 1 Nontreated 0c 0c 0b Nontreated 2 Nontreated 0c 0c 0b Ignite lb ai/a 22 fl oz/a 10 DAE B Ignite lb ai/a 22 fl oz/a 40 DAE D 3 Nontreated 0c 0c 0b Ignite lb ai/a 22 fl oz/a 20 DAE C Ignite lb ai/a 22 fl oz/a 40 DAE D 4 Prefix lb ai/a 2 pt/a PRE A 98a 96ab 81a Nontreated 5 Prefix lb ai/a 2 pt/a PRE A 0c 0c 0b Ignite lb ai/a 22 fl oz/a 10 DAE B Ignite lb ai/a 22 fl oz/a 40 DAE D 6 Prefix lb ai/a 2 pt/a PRE A 94ab 94ab 86a Ignite lb ai/a 22 fl oz/a 20 DAE C Ignite lb ai/a 22 fl oz/a 40 DAE D 7 Valor SX lb ai/a 2 oz wt/a PRE A 93ab 96ab 88a Nontreated 8 Valor SX lb ai/a 2 oz wt/a PRE A 0c 0c 0b Ignite lb ai/a 22 fl oz/a 10 DAE B Ignite lb ai/a 22 fl oz/a 40 DAE D 9 Valor SX lb ai/a 2 oz wt/a PRE A 97ab 95ab 80a Ignite lb ai/a 22 fl oz/a 20 DAE C Ignite lb ai/a 22 fl oz/a 40 DAE D 10 Metribuzin 75 DF lb ai/a oz wt/a PRE A 89b 91b 86a Nontreated 11 Metribuzin 75 DF lb ai/a oz wt/a PRE A 0c 0c 0b Ignite lb ai/a 22 fl oz/a 10 DAE B Ignite lb ai/a 22 fl oz/a 40 DAE D 12 Metribuzin 75 DF lb ai/a oz wt/a PRE A 96ab 96ab 93a Ignite lb ai/a 22 fl oz/a 20 DAE C Ignite lb ai/a 22 fl oz/a 40 DAE D 45