Is my crop rotation selecting for group 2 resistance? What s in my herbicide anyways?
|
|
- Dennis Rose
- 6 years ago
- Views:
Transcription
1 Is my crop rotation selecting for group 2 resistance? What s in my herbicide anyways? Jeff Stachler, Auglaize County, The Ohio State University, Wapakoneta, OH stachler.1@osu.edu Resistance of weeds to herbicides continues to increase around the world. This is due to the near total reliance upon herbicides to manage weeds and in many cases a reduction in the number of crops grown in rotation. In order to talk about the impact of crop rotation on weed resistance we need to look at the current status of weed resistance in Manitoba and surrounding areas. In Manitoba, wild oat and green foxtail have been confirmed resistant to the ACCase inhibiting herbicides (Group 1). Wild oat, green foxtail, kochia, wild mustard, common hempnettle, stinkweed, cleavers, common chickweed, Powell amaranth, pale smartweed, redroot pigweed, and spiny annual sowthistle have been confirmed resistant to Acetolactate Synthase inhibiting herbicides (Group 2). The last case of Group 2 resistance was documented in Green foxtail has been selected resistant to Mitotic Inhibitor herbicides (Group 3). Wild mustard has been confirmed resistant to Growth Regulator herbicides (Group 4) including 2,4-D, dicamba, MCPA, mecoprop, and dichloroprop. Wild mustard has been confirmed resistant to Photosystem II inhibitors having binding site A (Group 5). Wild oat has been confirmed resistant to Lipid Synthesis Inhibitors (Group 8). Wild oat has been selected for resistance to Groups 1 and 2 herbicides, Groups 1 and 8 herbicides and Groups 1, 2 and 8 herbicides. Green foxtail has been selected for resistance to Groups 1 and 3 herbicides. Kochia has been confirmed resistant to Groups 2 and EPSP synthase inhibitor glyphosate (Group 9) in Weed species present in Manitoba but confirmed resistant in Alberta and Saskatchewan include Persain darnel resistant to Group 1 herbicides, ball mustard, wild buckwheat, Russian thistle, narrow-leaf hawksbeard, shepherd s-purse, cow cockle, and common lambsquarters resistant to Group 2 herbicides, common hempnettle resistant to Group 4 herbicides, and cleavers resistant to Groups 2 and 4. Weed species present in Manitoba but confirmed resistant in the United States is important to consider including weed species that may arrive in Manitoba. Marshelder, eastern black nightshade, waterhemp (a pigweed species) and common ragweed have been confirmed resistant to Group 2 herbicides in North Dakota, Minnesota, and/or other parts of the United States. Kochia has been confirmed resistant to Group 4 herbicides including 2,4-D, dicamba, and fluroxypyr in the eastern half of North Dakota. Kochia has been confirmed resistant to dicamba in Colorado, Kansas, and Nebraska. Kochia has been confirmed resistant to Group 5 herbicides in North Dakota and other states. Common ragweed, Canada fleabane, and waterhemp have been confirmed resistant to Group 9 herbicide in North Dakota and many other states. Canada fleabane has been confirmed Group 9 resistant in most states of the United States. All states that have waterhemp have confirmed resistance to Group 9 herbicide and waterhemp continues to move farther north in the Red River Valley to Grand Forks County, North Dakota and Polk County, MN and outside the valley near Cando in Towner County, North Dakota. There are some populations of wild oat and common lambsquarters that have been difficult to control with glyphosate in North Dakota. Green foxtail has been selected for resistance to Group 1 and 2 herbicides in the northern half of North Dakota and is continuing to increase in frequency. Kochia has been selected for resistance to Groups 2 and 4, Group 5 and Photosynthesis Inhibitors binding site A, but
2 different than Group 5 (Group 7), and Groups 2, 4, and 9 in North Dakota. Kochia has also been confirmed resistant to Groups 2, 4, 5, and 9 and Groups 4 and 9 in Kansas. Waterhemp has been selected resistant to Groups 2 and 9 in North Dakota and most states having waterhemp. Waterhemp has been confirmed resistant to Groups 2 and 9 and PPO inhibiting herbicides (Group 14) in Iowa, Illinois, and Missouri and Groups 2, 5, and 9, and HPPD inhibitors (Group 27) in Iowa and Groups 2, 5, 9, and 14 in Illinois. Canada fleabane has been selected resistant to Group 2 and 9 in multiple states. Common ragweed has been selected resistant to Groups 2 and 9 in North Dakota and other states and to Groups 2 and 14 in Minnesota and other states. Crop rotation is important to managing herbicide resistant weeds and other agronomic pests. The greater the number of crops in the rotation the better the long-term weed management. Crop rotation improves weed management by varying patterns of resource competition, allelopathic interference, soil disturbance, and mechanical damage reducing the chances of specific weed species becoming prevalent. Crop diversity can lead to the use of more sites of action of herbicides to manage weeds. However it is possible to apply herbicides having the same site of action across multiple crops. This is the case in Manitoba for Group 2 herbicides. Group 2 herbicides are relied upon to control weeds in pulse crops, wheat, barley, oats, potato, Clearfield crops of wheat, lentil, canola, and sunflower, and Express Sun sunflower. It is possible to use Group 2 herbicides in corn and soybean as well, although few are used at this time. In addition several Group 2 herbicides are used in pre-seed and post harvest applications in multiple crops. Let s investigate some of the possible crop rotations and herbicide choices. Wheat, dry bean, and ExpressSun sunflower are in a rotation with Simplicity, Solo and Express applied respectively. All three of these are Group 2 herbicides selecting for resistance in wild oat and broadleaf weed species. Wheat followed by canola is a common crop rotation sequence in Manitoba. However if wheat and Clearfield canola are applied with Harmony SG and Odyssey Ultra, respectively, only Group 2 herbicides are being used to control broadleaf weeds. In a wheat, Roundup Ready canola, wheat, and Clearfield lentil rotation the application of Broadband, glyphosate, Retain, and Solo, respectively may select for Group 2 resistance to common chickweed and hempnettle even though glyphosate, fluroxypyr,and 2,4-D are used in two of the crops in rotation. In a wheat, sunflower, wheat, dry bean rotation, the application of Barricade II, Muster, Stellar, and Solo, respectively allows for the selection of Group 2 resistant shepherd s-purse and stinkweed. A wheat, LibertyLink canola, wheat, and Clearfield sunflower rotation applied with Prestige, Liberty, Pixxaro, and Solo selects for Group 4 resistance in various broadleaf weeds, although limited due to use of Group 4 herbicides in only two crops in the rotation. A rotation of wheat, sunflower, wheat, and dry bean applied with Axial BIA, Assure II, Broadband, and Assure II, respectively will select for resistance in foxtails and wild oat. Roundup Ready (RR) soybean followed by RR soybean is not a crop rotation. If only glyphosate is applied selection for Group 9 resistant weeds will occur, especially kochia. Roundup Ready corn followed by RR soybean is a weak crop rotation and if only glyphosate is applied, then resistance to Group 9 herbicide is likely. A crop rotation of RR soybean, RR corn, RR soybean, and wheat applied with glyphosate, glyphosate, glyphosate, and a pre-seed glyphosate plus florasulam tank-mix followed by Harmony K followed by glyphosate as a preharvest application, respectively, selects for Group 9 resistant weeds.
3 As demonstrated a good crop rotation may not solve weed resistance management issues when herbicides having the same site of action are used in all or most of the crops in the rotation. The combination of two or more herbicides into a single product by the manufacturer is called a pre-mixture. Pre-mixtures are common in today s market place. Pre-mixtures are easy to use for growers and retailers because a single container may replace two or more containers. Herbicide pre-mixtures are used to broaden the spectrum of weeds controlled. Pre-mixtures allow for the mixing of more than a single site of action in a single product. However do the active ingredients in a pre-mixture provide overlapping control? Overlapping control is when two or more of the active ingredients have different sites of action and provide equally effective control of a weed. Herbicide pre-mixtures are used to maintain specific ratios of active ingredients to provide effective weed control. Sometimes a pre-mixture may not include a high enough rate of one of the active ingredients for the weeds present in a specific area and/or a specific environment since pre-mixtures are made for wide geographies. A few pre-mixtures have been developed to reduce antagonism. Some pre-mixtures include safeners and/or a specific adjuvant that are not contained in the single active ingredient products. Despite the advantages of pre-mixtures one negative aspect is that a new trade name is given to each new combination of herbicides and touted as a new product causing some growers to be confused. If growers do not know what the active ingredients are in a pre-mixture they may not realize what herbicide sites of action are contained in the product and whether a product provides overlapping weed control. Let s investigate some wheat herbicide pre-mixtures for overlapping weed control. Retain is a combination of thifensulfuron and tribenuron, Group 2 herbicides and fluroxypyr and 2,4-D, Group 4 herbicides. Common chickweed and hempnettle are only controlled with Group 2 herbicides in Retain and kochia and cleavers are only controlled by Group 4 herbicides with all other common species controlled by both groups of herbicides. Spectrum is a combination of florasulam, a Group 2 herbicide and clopyralid and MCPA, Group 4 herbicides. Common chickweed, cleavers, and hempnettle are only controlled with florasulam in Spectrum and kochia, flixweed, lambsquarters and Russian thistle are only controlled with Group 4 herbicides. Harmony K is a combination of thifensulfuron and tribenuron, Group 2 herbicides, dicamba, a Group 4 herbicide and clodinafop, a Group 1 herbicide. Common chickweed is only controlled by Group 2 herbicides in Harmony K, kochia, cleavers, perennial sowthistle, and nightflowering catchfly are only controlled with dicamba and barnyardgrass, foxtail, and wild oat are only controlled with clodinafop. Altitude is a combination of imazamox, a Group 2 herbicide and furoxypyr and MCPA, Group 4 herbicides. Redroot pigweed, smartweed, foxtail, and wild oat are only controlled with imazamox in Altitude and common chickweed, kochia, and flixweed are only controlled with Group 4 herbicides. The soybean herbicide Flexstar GT combines fomesafen, a Group 14 herbicide and glyphosate a Group 9 herbicide. Glyphosate-resistant kochia and waterhemp will only be controlled by fomesafen in Flexstar GT and Canada fleabane, lambsquarters, smartweed, wild buckwheat, cleavers, common chickweed, hempnettle, and all grass species are only controlled with glyphosate. Viper ADV is a combination of imazamox, a Group 2 herbicide and bentazon, a Group 6 herbicide. Redroot pigweed, barnyardgrass, foxtail, and wild oat are only controlled with imazamox in Viper ADV and common chickweed, cleavers, cocklebur, and hairy nightshade are only controlled with bentazon. These examples clearly show that most pre-mixtures do not provide overlapping control allowing for the selection of herbicide-resistant weeds.
4 Careful weed management is necessary today to reduce the risk of selecting for additional herbicide resistant weed species. I have developed what I call the non-negotiables of weed management. The first non-negotiable is field perimeter weed management. Weeds, especially annual weeds are commonly found on the outside perimeter of a field. These weeds are sprayed with a reduced rate of herbicide(s) because there is no overlap on the outside nozzle. This allows for the selection of herbicide resistant weeds. During harvest these surviving weeds can be gathered into the combine and spread farther out into the field. Mowing the outside perimeter of all fields will drastically reduce weed seed production of the surviving plants and eliminate them from being moved further into the field by the combine. Weed densities are usually higher on the inside field perimeter than other areas of the field. Managing this inside field perimeter differently than the rest of the field should reduce weed densities over time. Some specific inside field perimeter practices include applying a preemergence herbicide to the field perimeter, applying a higher rate of a preemergence herbicide to the field perimeter, apply a postemergence herbicide to the field perimeter before the remainder of the field, make a planned second postemergence application to the field perimeter and/or remove all weeds by hand. The second non-negotiable is to scout fields often. The more times a field is scouted the more timely herbicide application(s) can be made. Scouting late in the season is helpful for evaluating the weed control program for the season and whether additional control strategies are still needed. The third non-negotiable is zero tolerance. Zero tolerance, credited to Jason Norsworthy is the elimination of any surviving weed in a field after herbicide application(s) and prior to seed production. Zero tolerance attempts to eliminate resistant seeds from being added to the soil seed bank and becoming future problems. The fourth non-negotiable is the diversification of weed management strategies. These include applying soil residual herbicides, tank-mixing two or more herbicides with overlapping sites of action, rotating herbicide sites of action, rotating herbicide resistant crops, and cultural practices such as crop rotation, increased crop competition, and improved plant health to name a few. The fifth non-negotiable is to plant into a field without weeds. In a no-tillage field that means applying herbicides to control weeds prior to planting the crop. In tilled fields that means controlling all weeds present at the time of tillage. The sixth non-negotiable is to maximize herbicide activity. These include choosing the most effective herbicides for the weeds present, applying postemergence herbicides to small (< 7.5 cm) annual weeds, apply full labeled rate of postemergence herbicides, apply the most effective adjuvant with postemergence herbicides, apply the correct spray volume for the type of herbicide(s) used, obtain the best droplet size for the herbicides being applied, use the narrowest nozzle spacing, reduce sprayer travel speed, and apply during the best weather conditions. The seventh non-negotiable is understanding weed biology. Knowing how many seeds a plant produces or when seeds become mature or at what stage is the most effective time to control a weed or how long will a seed survive in the soil are things to consider. The final non-negotiable is to react quickly to a changing weed population. Don t allow weeds to produce seeds in a field after herbicide application(s). When just a single plant is in a field after
5 herbicide application(s) the weed control strategy for that season needs to be adapted instead of waiting for next season or believing one weed is not a problem.
Weed Control in Pulses Maximizing Your Options CropSphere Jan. 11, 2017
Weed Control in Pulses Maximizing Your Options CropSphere Jan. 11, 2017 Eric Johnson, Chris Willenborg, Lena Syrovey and Steve Shirtliffe. University of Saskatchewan; Glenda Clezy, Saskatchewan Pulse Growers
More informationTHE NEXT STEP IN WEED CONTROL FOR YOUR ROUNDUP READY 2 XTEND SOYBEANS
THE NEXT STEP IN WEED CONTROL FOR YOUR ROUNDUP READY 2 XTEND SOYBEANS Herbicide formulations developed for use in the Roundup Ready Xtend Crop System Roundup Xtend with VaporGrip Technology XtendiMax with
More informationEdge* in Today s Farming
Edge* in Today s Farming Agronomy Update 2015 Lethbridge, Alberta 1 Dinitroaniline Chemistry BACKGROUND : CHEMICAL GROUP: Initially developed in the early 1970 s and 1980 s and applied pre-emergently in
More informationPRE - 30 days before to 1 day after seeding. PPI. Spring. Fall: From October 1 to December 31. Shallow PPI or PRE. EPP, shallow PPI, or PRE.
SUNFLOWER Refer to page 6 for Fall or Spring Early Preplant s. Refer to page 39 for additional herbicides to use in conventional or herbicide resistant sunflower. Soil-Applied s Eptam (EPTC 8 ) Prowl Prowl
More informationTools for Managing Resistance and Weed Control Herbicide options for pulses now and into future
Tools for Managing Resistance and Weed Control Herbicide options for pulses now and into future Eric Johnson 1, Jessica Weber 2, Jessica Pratchler 3 and Chris Willenborg 1 1 University of Saskatchewan
More informationWeed management in alfalfa. Mark Renz Agronomy Department University of Wisconsin-Madison
Weed management in alfalfa Mark Renz Agronomy Department University of Wisconsin-Madison Why manage weeds in alfalfa? 1. Risk of establishment failure 2. Reduce biomass of alfalfa 3. Reduce forage quality
More informationWEED MANAGEMENT. DEVELOPMENT STAGES Most crop plants and weeds have four stages of development: LEARNING OBJECTIVES
C 6 H A P TE R WEED MANAGEMENT LEARNING OBJECTIVES After completely studying this chapter, you should: Be able to define a weed and its four stages of development. Understand the differences between annual,
More informationFLEXIBILITY TO SPRAY CORN FROM PREPLANT TO POSTEMERGENCE
FLEXIBILITY TO SPRAY CORN FROM PREPLANT TO POSTEMERGENCE Solutions for the Growing World SURESTART II HERBICIDE WIDE APPLICATION WINDOW Preplant Preemergence Early Postemergence Up to 11-inch Corn APPLICATION
More informationIn Search of Effective Herbicides for Chickpeas.
In Search of Effective Herbicides for Chickpeas. F.A. Holm 1, K. Sapsford 1, E. N. Johnson 2, R. McVicar 3 and K. Kirkland 4. 1 Crop Development Centre, University of Saskatchewan, Saskatoon, SK, 2 Agriculture
More informationWeed Management in Cucurbits
Weed Management in Cucurbits Nathan Johanning Extension Educator, Local Food Systems and Small Farms University of Illinois Extension Murphysboro, Illinois The Importance of Weed Management Weed/plant
More informationStellar TM XL Herbicide
Stellar TM XL Herbicide GROUP 2 1 4 HERBICIDES For postemergent control of annual broadleaf weeds in spring wheat, durum wheat, winter wheat, spring barley and oats FOR SALE FOR USE IN THE PRAIRIE PROVINCES
More informationWeed Control That Everlasting Nemesis
Weed Control That Everlasting Nemesis By: Mark Bredehoeft and Dr. Jeff Stachler Weed control is a never ending production problem even with an effective tool like glyphosate. Six glyphosate formulations
More informationSunflower Weed Control Update and Issues. Rich Zollinger NDSU Extension Weed Specialist
Sunflower Weed Control Update and Issues Rich Zollinger NDSU Extension Weed Specialist Broadaxe Herbicide for Sunflower Pyroxasulfone (KIH 485) BroadAxe (FMC) a.i. = metolachlor+sulfentrazone (Dual+Spartan)
More informationHerbicide Resistance: These weeds just won t die! Daniel Stephenson, Ph.D. Weed Scientist LSU AgCenter
Herbicide Resistance: These weeds just won t die! Daniel Stephenson, Ph.D. Weed Scientist LSU AgCenter What is herbicide resistance? Weed Science Society of America definition: The inherited ability of
More informationGRAIN SORGHUM. Preemergence
68 Grain Sorghum GRAIN SGHUM See page 22 for PRECAUTIONS on use of atrazine containing products near ground and surface water. See comments in the corn section for detailed information on each of the herbicides
More informationResults from Surveys Conducted on the Status of Glyphosate- resistant Weeds in Missouri and Current Weed Management Programs Utilized in Soybean
Results from Surveys Conducted on the Status of Glyphosate- resistant Weeds in Missouri and Current Weed Management Programs Utilized in Soybean 2007 Missouri Retailer Survey 15-question phone survey of
More informationSugar Beets. SUGAR BEETS Annual Grass and Broadleaf Weeds. EPTC (Eptam) cycloate (Ro-Neet) ethofumesate (Nortron or Ethotron) dimethenamid-p (Outlook)
Sugar Beets Don Morishita Revised December 18, 2009 All rates listed are stated as broadcast equivalent (i.e., the amount that would be required for weed control if broadcast sprayed between rows as well
More informationLeonard P. Gianessi Cressida S. Silvers Sujatha Sankula Janet E. Carpenter
Plant Biotechnology: Current and Potential Impact For Improving Pest Management In U.S. Agriculture An Analysis of 40 Case Studies June 2002 Herbicide Tolerant Canola Leonard P. Gianessi Cressida S. Silvers
More informationAlberta Weed Survey:
Agriculture and Agri-Food Canada Agriculture et Agroalimentaire Canada Alberta Weed Survey: 2009-2010 Irrigated and Dryland Fields Julia Leeson & Chris Neeser Content Overall weed abundance Trends Distribution
More informationSOLO WDG HERBICIDE. Water Dispersible Granular Herbicide in water-soluble bags AGRICULTURAL
GROUP 2 HERBICIDE SOLO WDG HERBICIDE Water Dispersible Granular Herbicide in water-soluble bags AGRICULTURAL FOR SALE FOR USE IN THE PRAIRIE PROVINCES AND PEACE RIVER AREA OF BRITISH COLUMBIA ONLY GUARANTEE:
More informationPesticide Resistance
Pesticide Resistance Outline What is pesticide resistance? How does it occur? Resistance to: Insecticides Fungicides Herbicides How to delay resistance Marlin E. Rice What is pesticide resistance? The
More informationBASF EXCLUSIVE: Keep up to herbicide resistance. (With down-to-earth advice.)
BASF EXCLUSIVE: Keep up to herbicide resistance. (With down-to-earth advice.) Welcome Welcome to the first-ever BASF webinar on managing herbicide resistance Hosted by: Shaun Haney Founder of Real Agriculture
More informationHerbicides and Resistant Weeds. Don W. Morishita
Herbicides and Resistant Weeds Don W. Morishita Discussion Topics Herbicide resistant weeds in Idaho Selecting for herbicide resistant weeds Herbicide classification Herbicide resistance Using these groups
More informationProblem Weeds in Conservation Tillage. Case R. Medlin Extension Weed Specialist
Problem Weeds in Conservation Tillage Case R. Medlin Extension Weed Specialist Questions to Ponder 1. Do weed control practices change from conventional tillage to no-till? 2. Is weed management easier
More informationWeed Control Strategies for Your Forage Crop
Weed Control Strategies for Your Forage Crop (12/6/14) Tye Shauck Technical Service Representative WA & OR Always refer to the most current product label for the most update information. Always read and
More informationFall-Applied / Early Preplant Herbicides
Fall-Applied / Early Preplant Herbicides B1. FALL APPLICATION - HERBICIDES Several herbicides may be applied in the fall. Some include acetochlor, Eptam, Far-Go, S/metolachlor*, Ro-Neet, Prowl, Sonalan,
More informationMID-ATLANTIC REGION CERTIFIED CROP ADVISER
MID-ATLANTIC REGION CERTIFIED CROP ADVISER PERFORMANCE OBJECTIVES INTEGRATED PEST MANAGEMENT COMPETENCY AREAS April 2010 MID-ATLANTIC CERTIFIED CROP ADVISER (CCA) PROGRAM PERFORMANCE OBJECTIVES INTEGRATED
More informationODYSSEY WDG HERBICIDE. Water-Dispersible Granular Herbicide in water-soluble bags AGRICULTURAL
GROUP 2 HERBICIDE ODYSSEY WDG HERBICIDE Water-Dispersible Granular Herbicide in water-soluble bags AGRICULTURAL FOR SALE FOR USE IN THE PRAIRIE PROVINCES AND PEACE RIVER REGION OF BRITISH COLUMBIA ONLY
More informationCheatgrass Biology, Ecology, and Management
Cheatgrass Biology, Ecology, and Management Fabián Menalled menalled@montana.edu 406-994-4783 Montana State http://ipm.montana.edu/cropweeds Presentation Outline Biology and identification of brome species
More informationHow Herbicides Work. Lesson 2
How Herbicides Work Lesson 2 The copyright in these Weed Science Society of America (WSSA) training lessons is owned by the WSSA. WSSA grants you a limited license to use these materials solely for training
More informationGlyphosate Resistance: An Emerging National Issue
Glyphosate Resistance: An Emerging National Issue Bill Johnson Associate Professor of Weed Science www.btny.purdue.edu/weedscience SIU Weed Science Glyphosate Resistant Weeds January 2005 Common Ragweed
More informationPREHARVEST STAGING GUIDE
www.roundup.ca PREHARVEST STAGING GUIDE Contents u u u u u Introduction.... 3 CROP STAGING Wheat....6 Feed Barley....8 Tame Oats...10 Canola...12 Flax....14 Peas....16 Lentils....18 Soybeans....19 Dry
More informationTABLE 5A Weed Response to Herbicides in Dry Edible Beans*
TABLE 5A Weed Response to Herbicides in Dry Edible Beans* ANNUAL BROADLEAVES ANNUAL GRASSES PERENNIALS SITE OF ACTION CROP TOLERANCE** COCKLEBUR JIMSONWEED LAMBSQUARTERS NIGHTSHADE (E. BLACK) PIGWEED RAGWEED
More informationField Horsetail: A back hoe. Reflex probably has the greatest post emergent activity, but consider yourself lucky if you suppress this weed.
Post Emergent Weed Control in Non-GMO soybeans Mike Cowbrough, OMAFRA, Guelph Successful post emergent weed control is influenced by weed size, density and moisture. Large weeds, a whole lot of them and
More informationHerbicide-Resistant Weeds in Nebraska
EXTENSION Know how. Know now. Herbicide-Resistant Weeds in Nebraska Amit J. Jhala, Extension Weed Management Specialist Lowell D. Sandell, Extension Educator Stevan Z. Knezevic, Extension Weed Management
More informationNon-Atrazine Herbicide Programs for Weed Control in No-till Sweet Corn (2011 final research report)
Non-Atrazine Herbicide Programs for Weed Control in No-till Sweet Corn (2011 final research report) Dwight D. Lingenfelter, Penn State University and Mark J. VanGessel, University of Delaware Introduction:
More informationShallow PPI or PRE. Shallow PPI, PRE or EPOST to V4 corn. EPP - At least 7 days prior to planting. EPP, shallow PPI, or PRE.
CORN Refer to page 6 for Fall or Spring Early Preplant s. Refer to page 22-24 for additional herbicides to use in conventional or herbicide-resistant corn. Dual/II/Magnum (S/metolachlor 15 & benoxacor
More informationFOR SALE FOR USE IN THE PRAIRIE PROVINCES AND INTERIOR OF BRITISH COLUMBIA ONLY
2017-6869 2017-12-20 Container label Davai 80SL Herbicide GROUP 2 HERBICIDE Solution FOR SALE FOR USE IN THE PRAIRIE PROVINCES AND INTERIOR OF BRITISH COLUMBIA ONLY AGRICULTURAL READ THE LABEL AND BOOKLET
More informationPURSUIT 240 HERBICIDE AGRICULTURAL
GROUP 2 HERBICIDE PURSUIT 240 HERBICIDE AGRICULTURAL FOR SALE FOR USE IN THE PRAIRIE PROVINCES & PEACE RIVER REGION OF BRITISH COLUMBIA ONLY SOLUTION GUARANTEE: imazethapyr... 240 g/l REGISTRATION NO.
More informationHerbicide injury symptoms. Herbicide families. Clethodim. Sethoxydim 2/25/2013
Herbicide injury symptoms Site of Action: Acetyl-CoA carboxylase enzyme (ACC-ase) Injury takes 7-14 days (grasses only) newer leaf tissue will be yellow (chlorotic) or brown (necrotic) Leaves in whorl
More informationWEED CONTROL AND CROP RESPONSE WITH OPTION HERBICIDE APPLIED IN FIELD CORN
WEED CONTROL AND CROP RESPONSE WITH OPTION HERBICIDE APPLIED IN FIELD CORN Corey V. Ransom, Charles A. Rice and Joey K. Ishida Malheur Experiment Station Oregon State University Ontario, OR, 2003 Introduction
More informationWeed Control. Making Spray Decisions. Integrated Weed Management. Yield Losses Caused by Weeds. Field Scouting
37 Weed Control The use of herbicides to control weeds is often important in determining the success or failure of a crop. However, many other practices can be implemented before and after a herbicide
More informationYield loss as they compete for: Increase production costs. Reduce Crop quality
Weed Management What is a weed? Yield loss as they compete for: Interceptable light, Water, Nutrients. Harbor Pests: Over winter insects, host to diseases and cause infection. Increase production costs.
More informationMERGE ADJUVANT EMULSIFIABLE CONCENTRATE. A blend of surfactant with petroleum hydrocarbons for application with various herbicides
MERGE ADJUVANT EMULSIFIABLE CONCENTRATE A blend of surfactant with petroleum hydrocarbons for application with various herbicides COMMERCIAL (AGRICULTURAL) GUARANTEE: Surfactant blend...... 50% Solvent
More informationWeed Management in Soybean
Weed Management in Soybean Questions from Ontario Farmers Boundary Roundup + Conquest Guardian Peter H. Sikkema University of Guelph Ridgetown Campus Pursuit (Post) Roundup (Post) Question # 1 I heard
More informationApproved Basagran Forte booklet (grain sorghum and grain millet), April 24, 2009 LIQUID
Approved Basagran Forte booklet (grain sorghum and grain millet), April 24, 2009 GROUP 6 HERBICIDE HERBICIDE LIQUID For selective post-emergence broadleaf weed control in soybeans, dry beans, peas, corn
More informationWeed Management Strategies in Brassica and Other Oilseed Crops. Rachel Zuger, Joe Yenish, Frank Young, and Ian Burke
Weed Management Strategies in Brassica and Other Oilseed Crops Rachel Zuger, Joe Yenish, Frank Young, and Ian Burke Canola/Rapeseed Preplant Incorporated Sonalan Preplant Incorporated 5.5 9.5 # of Sonalan
More informationDELIVERING A SYSTEM FOR HIGHER YIELD IN CANOLA
DELIVERING A SYSTEM FOR HIGHER YIELD IN CANOLA System of Solutions Come Together in Our Pipeline Development Process Monsanto s R&D Pipeline Designed to Address Farmers Challenges Increase Yield Impact
More informationUnited States Perspective on Weed Management in Sunflower
United States Perspective on Weed Management in Sunflower Phil Stahlman Research Weed Scientist Agricultural Research Center-Hays Kansas State University Hays, KS Annual Precipitation, mm 251-381- 511-641-
More informationERAGON COMMERCIAL (AGRICULTURAL) FOR SALE FOR USE IN EASTERN CANADA ONLY CAUTION SKIN IRRITANT READ THE LABEL AND BOOKLET BEFORE USING
ERAGON GROUP 14 HERBICIDE Water soluble granular herbicide for pre-plant and pre-emergent application for the control of broadleaf weeds in selected crops, and for harvest aid in soybeans and dry common
More informationWeed Management Strategies for Wayne Keeling Weed Science and Cropping Systems Lubbock, Texas
Weed Management Strategies for 2015 Wayne Keeling Weed Science and Cropping Systems Lubbock, Texas Overview Weed resistance more than Palmer amaranth/glyphosate Palmer amaranth past and present Strategies
More informationO HERBICIDE. Microencapsulated Pendimethalin in an Aqueous Carrier MICROCAPSULE SUSPENSION COMMERCIAL (AGRICULTURAL)
PROWL H20 Booklet GROUP 3 HERBICIDE PROWL H 2 O HERBICIDE Microencapsulated Pendimethalin in an Aqueous Carrier MICROCAPSULE SUSPENSION COMMERCIAL (AGRICULTURAL) (NOT FOR SALE FOR USE IN PRAIRIE PROVINCES,
More informationHERBICIDE OPTIONS IN SMALL GRAINS. Steve Wright, Steve Orloff, Mick Canevari, Kassim Al- Khatib 1 INTRODUCTION
HERBICIDE OPTIONS IN SMALL GRAINS Steve Wright, Steve Orloff, Mick Canevari, Kassim Al- Khatib 1 INTRODUCTION Small grains, which include wheat, triticale, barley, oats, and rye, are grown throughout most
More informationApproved Container (3-way TM with glyphosate & metribuzin [ ], January 27, 2017 ERAGON LQ
Approved Container (3-way TM with glyphosate & metribuzin [2016-7012], January 27, 2017 ERAGON LQ GROUP 14 HERBICIDE Water-based suspension concentrate herbicide for pre-plant and pre-emergent application
More informationCurrent Status of Herbicide Resistance in Non-crop Areas. Fred Fishel Professor, UF/IFAS Agronomy
Current Status of Herbicide Resistance in Non-crop Areas Fred Fishel Professor, UF/IFAS Agronomy FLEPPC April 2017 When Herbicides Don t Work Improper plant/weed identification Incorrect herbicide dosage
More informationSoybean Weed Control
Soybean Weed Control Richard Zollinger Extension Weed Specialist The weed control suggestions in this production guide are based on the assumption that all herbicides mentioned will have a registered label
More informationResistant Weeds Management (soybean & corn) Curtis Thompson Extension Weed Science Agronomy Dept. Kansas State University
Resistant Weeds Management (soybean & corn) Curtis Thompson Extension Weed Science Agronomy Dept. Kansas State University Discussion Outline Glyphosate resistance weeds Marestail management Waterhemp/Palmer
More informationSyngenta delivers grower value in sunflowers
Syngenta delivers grower value in sunflowers At Syngenta, we are proud to support the sunflower industry. To help growers meet increasing demand and capitalize on market opportunities, we continue to invest
More informationIntegrating Residual Herbicides into Corn and Soybean Weed Management Plans. Jeffrey L. Gunsolus
Integrating Residual Herbicides into Corn and Soybean Weed Management Plans Jeffrey L. Gunsolus gunso001@umn.edu Harvest Time Reveals Weed Issues Giant Ragweed Harvest Time Reveals Weed Issues Common Waterhemp
More informationFor postemergence control of broadleaf and grass weeds in select turfgrass species on golf courses, sod farms, and residential turfgrass
Group 27 Herbicide Supplemental Label F postemergence control of broadleaf and grass weeds in select turfgrass species on golf courses, sod farms, and residential turfgrass This supplemental label expires
More informationManaging Pesticide Resistance
Kentucky Pesticide Education Program copyright 2016 University of Kentucky Department of Entomology Managing Pesticide Resistance Pesticide resistance presents an increasing challenge to growers. A resistant
More informationPlanting after fallow: What is the fallow syndrome and how do I manage it? Joel Ransom
Planting after fallow: What is the fallow syndrome and how do I manage it? Joel Ransom Excess water in the spring of 2011 Resulted in more than 6 million acres were not planted in 2011 (in ND) and record
More informationSOYBEAN. Soil-Applied Herbicides. Product/A (ai/a) Weeds When to Apply Remarks and Paragraphs. Herbicide. Annual grass and some broadleaf weeds.
Refer to page 6 for Fall or Spring Early Preplant s. Refer to page 29-31 for additional herbicides to use in conventional or herbicide-resistant soybean. SOYBEAN Soil-Applied s Prowl Prowl H2O (pendimethalin
More informationPERIMETER II Herbicide
Page 1 (Container) PERIMETER II Herbicide GROUP 4 HERBICIDE PERIMETER II Herbicide is a selective herbicide for postemergent control of annual broadleaved weeds including cleavers and certain ALS-resistant
More informationTuesday, December 20, 1:00 pm
Iowa Farm Bureau s Margin Management Webinar Series presents: Iowa Pest Resistance Management Plan Webinar Tuesday, December 20, 1:00 pm Please Enter as a Guest shortly before the webinar time. Speaker:
More informationWEED CONTROL IN ONION WITH POSTEMERGENCE HERBICIDES
WEED CONTROL IN ONION WITH POSTEMERGENCE HERBICIDES Corey V. Ransom, Charles A. Rice, and Joey K. Ishida Malheur Experiment Station Oregon State University Ontario, OR, 2004 Introduction Weed control is
More informationARES TM FOR SALE FOR USE IN THE PRAIRIE PROVINCES ONLY HERBICIDE SOLUTION COMMERCIAL (AGRICULTURAL)
GROUP 2 HERBICIDE ARES TM FOR SALE FOR USE IN THE PRAIRIE PROVINCES ONLY HERBICIDE SOLUTION COMMERCIAL (AGRICULTURAL) GUARANTEE: Imazamox 33 g/l Imazapyr... 15 g/l Contains 1,2-benzisothiazolin-3-one at
More informationNon GMO Crop Production. Joe Lawrence
Non GMO Crop Production Joe Lawrence 1 Crops of Potential Interest: DAIRY Field Crops where certain varieties/hybrids contain GE Traits Corn Cotton Alfalfa Canola Soybean Sugar Beets Conventional term
More informationVantage* Plus MAX Herbicide Solution
13-DEC-2010 2009-2992 page 1 (Container) Vantage* Plus MAX Herbicide Solution GROUP 9 HERBICIDE Water soluble herbicide for nonselective weed control in CROPLAND SYSTEMS AND IN NON-CROPLAND AREAS. AGRICULTURAL
More informationA Weed Scientist s Perspective on Cover Crops in Missouri. Kevin Bradley University of Missouri
A Weed Scientist s Perspective on Cover Crops in Missouri Kevin Bradley University of Missouri Introduction Economic incentives (~$25-38/A) have led to increased interest in Midwest crop production systems
More informationRoundup Ready Sugarbeet Production. Your Way To Grow 2008
Roundup Ready Sugarbeet Production Your Way To Grow 2008 Roundup Ready Variety Development Weed Control & Agronomic Practices Economics Environment 2 Variety Development Variety Development 1993 - First
More informationVECTOR Herbicide Solution
(Container) page 1 VECTOR Herbicide Solution GROUP 9 HERBICIDE Water soluble herbicide for nonselective weed control in CROPLAND SYSTEMS AND IN NON-CROPLAND AREAS. AGRICULTURAL and INDUSTRIAL READ THE
More informationSOYBEAN NO TILLAGE. Preplant Foliar Burndown Herbicides for No-Tillage Soybeans
74 Soybean SOYBEAN NO TILLAGE Herbicides used in no-till soybeans include foliar-applied herbicides (often called a "burndown' herbicides) to control emerged weeds and soil residual herbicides for preemergence
More informationGROUP 7 HERBICIDE AGRICULTURAL READ THE LABEL AND ATTACHED BROCHURE BEFORE USING
2009-0821 17-FEB-2010 (Container label) GROUP 7 HERBICIDE LOROX L HERBICIDE LIQUID SUSPENSION AGRICULTURAL READ THE LABEL AND ATTACHED BROCHURE BEFORE USING NET CONTENTS: 10 L REGISTRATION NO. 16279 PEST
More informationMERGE ADJUVANT. A blend of surfactant with petroleum hydrocarbons for application with various herbicides
Approved Master Copy (renewal [2009-3091]), September 29, 2009 MERGE ADJUVANT A blend of surfactant with petroleum hydrocarbons for application with various herbicides COMMERCIAL (AGRICULTURAL) GUARANTEE:
More informationARMEZON Herbicide. FOR SALE FOR USE ON FIELD CORN (including both conventional and herbicide tolerant varieties), SWEET CORN AND SEED CORN
GROUP 27 HERBICIDE ARMEZON Herbicide FOR SALE FOR USE ON FIELD CORN (including both conventional and herbicide tolerant varieties), SWEET CORN AND SEED CORN SUSPENSION COMMERCIAL (AGRICULTURAL) GUARANTEE:
More informationSPECIMEN LABEL CAUTION/PRECAUCION ALBAUGH, LLC KEEP OUT OF REACH OF CHILDREN NE 36th Street Ankeny, Iowa
SPECIMEN LABEL Group 2 Herbicide VULTURE ACTIVE INGREDIENT: ammonium salt of imazamox: 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5 -oxo-1h-imidazol-2-yl]-5-(methoxymethyl)--pyridinecarboxylic acid*........................
More informationIPCO COBUTOX 625 Herbicide
(BOOKLET) Group 4 Herbicide IPCO COBUTOX 625 Herbicide AGRICULTURAL For weed control in seedling Alfalfa, Birdsfoot Trefoil, Pastures, and Seedling Forage Grasses. READ THE LABEL AND ATTACHED BOOKLET BEFORE
More informationHow Hop Herbicides Work. Jed Colquhoun University of Wisconsin-Madison
How Hop Herbicides Work Jed Colquhoun University of Wisconsin-Madison How Hop Herbicides Work Hop herbicides (example trade names): norflurazon (Solicam) trifluralin (Treflan) flumioxazin (Chateau) carfentrazone
More informationUW- Pesticide Applicator Training Program Agent CD IPM Script 5/16/2012. Slide 1
Slide 1 2 Pest Management Principles: Managing pests is an art in and of itself. In an a controlled environment, such as a home, pest management is quite simple; you: clean up debris in and around the
More informationADOPT Project Forage Termination Strategies on Succeeding Annual Crops
heatland Conservation Area Inc W Agri-ARM Research Update 2015 ADOPT Project Forage Termination Strategies on Succeeding Annual Crops Presentation Outline Project introduction SMA literature summary 2013-14
More informationENFORCER M HERBICIDE. Emulsifiable Concentrate FOR SALE FOR USE ONLY IN THE PRAIRIE PROVINCES AND PEACE RIVER REGION OF BRITISH COLUMBIA
[Sleeve] GROUP 4 6 HERBICIDES ENFORCER M HERBICIDE Emulsifiable Concentrate FOR SALE FOR USE ONLY IN THE PRAIRIE PROVINCES AND PEACE RIVER REGION OF BRITISH COLUMBIA For use as a selective postemergent
More informationWeed Management in Small Grains, Forage Legumes, and Pastures Overview
Weed Management in Small Grains, Forage Legumes, and Pastures Overview Small Grains Winter annuals and early-maturing summer annuals are the primary weeds found in Iowa small-grain fields. These weeds
More informationMaverick III Herbicide
Maverick III Herbicide GROUP 9 HERBICIDE Water soluble herbicide for nonselective weed control in CROPLAND SYSTEMS AND IN NON- CROPLAND AREAS. AGRICULTURAL and INDUSTRIAL READ THE LABEL AND BOOKLET BEFORE
More informationWeed Identification. Weed Management in Pumpkins. Greg Armel Weed Scientist- Vegetable Crops, Ornamentals, and Invasive Weeds
Weed Management in Pumpkins Weed Identification Picture found at Colorado State Extension: http://www.specialtycrops.colostate.edu/grower_grants/2004/reports/redwagon/ RedWagon_inal_Report.doc Picture
More informationContact herbicides. Steve Fennimore University of California-Davis, Salinas, CA
Contact herbicides Steve Fennimore University of California-Davis, Salinas, CA Kills on contact Volatility The evaporation of herbicide molecules directly from water, soil or plant surfaces. Codistillation
More informationGiant Ragweed Management in Roundup Ready Systems
Giant Ragweed Management in Roundup Ready Systems Bill Johnson Associate Professor of Weed Science www.btny.purdue.edu/weedscience Level of Resistance to ALS-inhibitors and Glyphosate R/S ratio = ratio
More informationIntegrated Management of Weeds in Dry Peas
MontGuide Integrated Management of Weeds in Dry Peas by Fabian Menalled, Cropland Weed Specialist, Department of Land and Environmental Resources In recent years, there has been an increase in market demands
More informationFOR USE ONLY IN MANITOBA, SASKATCHEWAN, ALBERTA AND INTERIOR OF BRITISH COLUMBIA
VELOCITY M3 All-In-One Herbicide SUSPENSION FOR POSTEMERGENCE WEED CONTROL IN SPRING, DURUM AND WINTER WHEAT GROUP 2 27 6 HERBICIDE FOR USE ONLY IN MANITOBA, SASKATCHEWAN, ALBERTA AND INTERIOR OF BRITISH
More informationMIDWEST CROP PORTFOLIO GUIDE
MIDWEST CROP PORTFOLIO GUIDE Working together to deliver on the promise of AGRICULTURE We don t just see rows of plants. We see a promise at the heart of every farm: exceptional genetics, clean fields,
More informationLATE SEASON WEED CONTROL IN SUGAR BEETS WITH POSTEMERGENCE APPLICATIONS OF FRONTIER HERBICIDE
LATE SEASON WEED CONTROL IN SUGAR BEETS WITH POSTEMERGENCE APPLICATIONS OF FRONTIER HERBICIDE Charles E. Stanger and Joey Ishida Malheur Experiment Station Oregon State University Ontario, Oregon 1995
More informationWEED RESISTANCE MANAGEMENT AND CHALLENGES WITH ROUNDUP RESISTANT ALFALFA. Steve Orloff, Mick Canevari and Tom Lanini 1. Summary
WEED RESISTANCE MANAGEMENT AND CHALLENGES WITH ROUNDUP RESISTANT ALFALFA Steve Orloff, Mick Canevari and Tom Lanini 1 Summary Weeds are a challenge to profitable alfalfa production. The Roundup Ready alfalfa
More information(GLYPHOSATE PLUS SURFACTANT) GROUP 9 HERBICIDE
(GLYPHOSATE PLUS SURFACTANT) GROUP 9 HERBICIDE AVOID HERBICIDE CONTACT WITH FOLIAGE, GREEN STEMS, EXPOSED NON-WOODY ROOTS OR FRUIT OF S, DESIRABLE PLANTS AND TREES BECAUSE SEVERE INJURY OR DESTRUCTION
More informationDamage Thresholds. Section 8
Damage Thresholds Section 8 Relative yield Hypothetical yield of crop as affected by length of early season weed control 100 80 60 40 20 Yield loss No yield loss 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Weeks of
More informationEconomic and herbicide use impacts of glyphosate-resistant crops
Pest Management Science Pest Manag Sci 61:241 245 (2005 ) DOI: 10.1002/ps.1013 Economic and herbicide use impacts of glyphosate-resistant crops Leonard P Gianessi CropLife Foundation, 1156 15th Street
More informationEXPRESS PRO HERBICIDE
EXPRESS PRO HERBICIDE GROUP 2 HERBICIDE FOR SALE FOR USE IN THE PRAIRIE PROVINCES AND THE PEACE RIVER REGION OF BRITISH COLUMBIA SOLUBLE GRANULES COMMERCIAL READ THE LABEL AND THE ATTACHED BOOKLET BEFORE
More informationUAP Herbicide Guide. Your guide to herbicide selection.
UAP Herbicide Guide Your guide to herbicide selection. Why it s important to rotate crop protection products By Dr. Hugh Beckie Research Scientist, Agriculture and Agri-Food Canada Crop pests whether insects,
More informationManitoba Flax Production
the art of research Manitoba Flax Production Executive Summary March 2015 Insightrix Research Inc. 1-3223 Millar Avenue Saskatoon, SK S7K5Y3 1-866-888-5640 (toll free) 1-306-657-5640 info@insightrix.com
More informationWEED CONTROL SECTION
WEED CONTROL SECTION Timing of herbicide application is extremely important to maximizing weed control and sugarbeet yield. This is true for all herbicides, including glyphosate. To maximize weed control
More information