Inside This Issue

Technical Service Representative

Nick Hustedde –

618-978-2268

Contact your local FMC Representative for more

information:

Joe Kritenbrink (317) 407-6883

Lonne Fry (309) 221-5000

Jacob Heeren (815) 471-7904

Jen Maruszewski (812) 798-5049

Justin Quear (513) 441-5819

Proactive Weed

Management in 2017

FMC Soybean Herbicide

Solutions

1-10-17 Proactive Weed Management in 2017

Addressing herbicide resistance requires a proactive strategy. Especially if target weeds confer stacked resistance to multiple herbicides. The University of Illinois recently added a waterhemp biotype to the international survey of herbicide resistant weeds. This biotype is resistant to 5 sites of action including synthetic auxins, specifically 2,4-D (Heap, I. The International Survey of Resistant Weeds. Online. Internet. January 5, 2017). Multiple resistance in waterhemp is expanding throughout the Midwest, leading to management challenges for biotypes with no post control options. Overlaying residual herbicides from different sites of action is imperative when targeting these populations. Managing emergence with residual herbicides will reduce selection pressure on new technologies and maintain yield potential by minimizing crop competition.

Photos Courtesy of Dr. Jason Norsworthy, University of Arkansas

A field study conducted in Arkansas demonstrates that a single female palmer amaranth plant going to seed can put fields out of production in only 3 years if herbicide diversity is not practiced. Weed escapes with multiple resistance pose an extreme risk to agricultural production and should be managed with a zero tolerance policy.

Practicing diversity in terms of chemical, mechanical, cultural and biological weed management focusing on the soil seed bank will be critical for sustainable control of multiple resistant weeds. Certain cultural and mechanical techniques such as row spacing, seeding rate, and tillage can be practically implemented in 2017 to enhance and diversify tactics on driver weeds.

Moldboard plowing likely isn’t feasible on the entire farm. But where soils are not as erosive and pigweed pressure is high, research has demonstrated a significant reduction of pigweed emergence when administered.

Narrow row spacing and seeding more plants per acre are strategies that can accelerate canopy closure. Pigweed seeds typically germinate with moisture and temperature spikes. Canopy closure reduces sunlight penetration and stabilizes soil temperature reducing emergence. These cultural tactics can be practical components of an integrated plan to manage weeds in 2017.

Resistance Management Guidelines: Start Clean and Stay Clean – Start with strong pre and follow 14-21 days later with an overlapping residual. Only use post herbicide technologies to clean up few escapes from residual treatments, not as primary weed removal agents. Scouting – Determine burndown herbicide or tillage effectiveness, adjust program to remove escapes prior to planting. Apply overlapping residual treatments to bare soil, if weeds are emerging adjust as necessary. Multiple Sites of Action – Employ long residual herbicides from multiple sites of action. Mechanical / Cultural / Biological Management – Deep Tillage: less erosive fields with a history of high pigweed density. 15’’ or Drilled row spacing, seeding rates of 160K or higher (adjust higher with comfort level for variety / field history lodging potential) to encourage canopy closure. Consider implementing dense cover crop systems to impede spring weed emergence. Minimize Weed Seed Production – practice zero tolerance for weed escapes (even if it means hand removal!) Minimize field to field weed seed movement – Clean equipment, harvest worst fields last if possible.

FMC Herbicide Solutions Selecting the longest lasting and most effective soil residual herbicides on resistant weeds with long germination intervals should be a component of any management plan. Authority® and Anthem® herbicides provide superior residual activity and effective solutions on resistant pigweeds, especially when utilized in an overlapping residual strategy.

Preplant / Preemergence (No-Till – Add effective Burndown)

POST + Residual

Glyphosate or Glufosinate +

Authority® MTZ DF herbicide 14-16 oz. Authority® Elite herbicide 25-28 oz.* Authority® First DF herbicide 4.5-6.4 oz.* Authority® XL herbicide 4-5 oz.* Authority® MAXX herbicide 5-6.5 oz.* *Add Metribuzin 6 oz. for an additional site of action on pigweeds

Anthem® MAXX herbicide 2.5-3 oz. Apply 14-21 days after planting prior to new pigweed emergence

Herbicide Program Effectiveness on Multiple-Resistant Waterhemp in Glyphosate Systems Southern Illinois University – 2016

Carlyle, IL

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Marvel™ herbicide 7.25 oz. + Glyphosate 1.125 lbs ae/A EPOST fb Cobra® herbicide 10 oz. + glyphosate 1.125

lbs ae/A MPOST

Authority® Elite herbicide 26 oz. PRE fb Anthem®

MAXX herbicide 2.5 oz. + Glyphosate 1.125 lbs ae/A

@ 3 Trifoliates

Authority® MAXX herbicide 5 oz. + Metribuzin 5 oz. PRE

fb Anthem® MAXX herbicide 2.5 oz. +

glyphosate 1.125 lbs ae/A @ 3 Trifoliates

Anthem® MAXX herbicide 4 oz. + Metribuzin 5 oz. PRE fb Marvel™ herbicide 7.25 oz. + glyphosate 1.125 lbs ae/A

@ 28 DAP

Boundary® herbicide 1.5 pt. PRE fb Flexstar® GT

herbicide 3.5 pt. Early POST

Waterhemp 6/28

Waterhemp 7/17

Waterhemp 8/14

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2 Effective Sites of Action

Same # of effective sites of action, however inherently long soil residual of FMC active ingredients outperformed the competition on multiple resistant waterhemp

In order to keep current and future post herbicide / trait technologies effective, utilizing programs allowing the least amount of weed escapes to reduce selection pressure on those technologies (Roundup Ready® Xtend Crop System, Liberty Link® herbicide, Enlist™ Weed

Control System etc.) will be imperative. Authority and Anthem herbicides have demonstrated superior performance on multiple-resistant weed species in addition to broad weed spectrums.

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Authority MAXX herbicide 5 oz. + Metribuzin 5 oz. PRE fb Anthem MAXX herbicide 3 oz. + Glyphosate 1.125 lbs

ae/A @ 3 Trifoliates

Authority® MTZ DF herbicide 15 oz. PRE fb

Anthem MAXX herbicide 3 oz. + Glyphosate 1.125 lbs

ae/A @ 3 Trifoliates

Anthem MAXX 4 herbicide oz. + Metribuzin 5 oz. PRE fb Marvel herbicide 7.25 oz + Glyphosate 1.125 lbs ae/A

@ Early POST

Boundary herbicide 1.5 pt. PRE fb Prefix® herbicide 2 pt. + Glyphosate 1.125 lbs

ae/A @ 3 Trifoliates

Rowel® FX herbicide 3 oz. PRE fb Warrant® Ultra

herbicide 48 oz. + Glyphosate 1.125 lbs ae/A

@ 3 Trifoliates

Giant Foxtail Waterhemp Tall Morning Glory Cocklebur

Herbicide Program Effectiveness in Glyphosate Systems Univ. of Illinois – 2016

Urbana, IL

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Always read and follow label directions. NOTE REGARDING RESTRICTED USE PESTICIDES: Anthem ATZ herbicide; Athena insecticide, Brigade 2EC Insecticide/Miticide, Brigade WSB Insecticide/Miticide, Brigadier Insecticide Capture 3RIVE 3D insecticide, Capture LFR Insecticide, Declare insecticide, Hero Insecticide, Mustang Insecticide, Mustang Maxx Insecticide, Pounce 25WP Insecticide, Stallion Brand Insecticide, Temitry LFR Insecticide/Fungicide, Triple Crown Insecticide, Ethos XB Insecticide/Fungicide and Gladiator Insecticide/Miticide are Restricted Use Pesticides. NOTE FOR CALIFORNIA: Accurate Extra herbicide, Aim herbicide, Aim EC herbicide, Aim EW herbicide, Anthem herbicide, Anthem ATZ herbicide, Anthem Flex herbicide, Anthem MAXX herbicide, Authority Assist herbicide, Authority Elite herbicide, Authority First DF herbicide, Authority MAXX herbicide, Authority MTZ DF herbicide, Authority XL herbicide, Cadet herbicide, Chisum Herbicide, Command 3ME microencapsulated herbicide, Crusher Herbicide, Edition Broadspec herbicide, Edition Tankmix Herbicide, Marvel herbicide, Nimble Herbicide, Nuance Herbicide, Preemptor SC fungicide, Report Extra Herbicide, Solstice herbicide, Spartan 4F herbicide, Spartan Charge herbicide, Spartan Elite herbicide, Temitry LFR Insecticide/Fungicide, Topguard EQ fungicide, Zeus Prime XC herbicide, Zeus XC herbicide, Capture 3RIVE 3D insecticide, Ethos XB Insecticide/Fungicide, Hero Insecticide, Mustang Maxx Insecticide, Display cotton harvest aid, Zoro Miticide and VGR Soil Amendment are not registered for sale or use in California. VGR Soil Amendment is not a pesticide. Beleaf and Carbine are trademarks of Ishihara Sangyo Kaisha, Ltd. Cercobin is a trademark of Nippon Soda Co., LTD. Sovran is a registered trademark of BASF. FMC, 3RIVE 3D, Accurate, Aim, Anthem, Athena, Authority, Brigade, Brigadier, Cadet, Capture, Chisum, Command, Crusher, Declare, Display, Edition, Ethos, Preemptor, Fracture, Fyfanon, Gladiator, Hero, Koverall, LFR, Marvel, Mustang, Nimble, Obey, Pounce, Report, Rhyme, Rovral, Shark, Solida, Solstice, Spartan, Stallion, Temitry, Topguard, Topguard Terra, VGR and Zeus are trademarks and HatchTrak and Investing in farming’s future are service marks of FMC Corporation or an affiliate. ©2016 FMC Corporation. All rights reserved. 11/16

888-59-FMC-AG FMCCROP.COM

Boundary and Flexstar are trademarks of Syngenta Group Company. Roundup Ready, Rowel and Warrant Ultra are trademarks of Monsanto Technology LLC. Enlist is a trademark of Dow AgroSciences LLC. Liberty Link is a trademark of Bayer CropScience LP. Cobra is a registered trademark of Valent U.S.A. Corporation

Marvel™ herbicide 7.25 oz + Glyphosate 1.125 lb ae

fb Cobra® herbicide 10 oz + Glyphosate 1.125 lb ae

Univ. of Illinois - 2016

Anthem® MAXXX herbicide 4 oz + Metribuzin 5 oz PRE

fb Marvel™ herbicide 7.25 oz + Glyphosate 1.125 lb ae

Southern Illinois Univ.- 2016

HT-CCB-SOYBEAN-NVH 1-10-17