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Weed Management Guide

CORN SOYBEANS Cereals

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Weed Management Guide CORN | SOYBEANS | Cereals I put this weed management guide together for Country Guide because I have noticed a change in some of the weed species commonly found in corn, soybean and cereal fields. There has also been a tremendous amount of research conducted by the University of Guelph (specifically, Dr. Peter Sikkema, University of Guelph – Ridgetown Campus) that sheds light on how to manage certain “problem weeds.” The presence of problem weeds, herbicide-resistant weeds (specifically glyphosate) and the entry of new herbicide-tolerant crop technologies makes it more challenging to select products for your farm operation. It was clear to me that it was time to change the way that we present weed management information to you. This insert provides an opportunity to construct weed control rating charts that better reflect the types of weed management challenges found in field crops throughout the season. Is it perfect? Probably not, but that is the goal, to make it a perfect resource for you. I would value any constructive suggestions that you have.

Mike Cowbrough Weed Management Program Lead, Field Crops Ministry of Agriculture and Food, Ministry of Rural Affairs 519-824-4120 Ext. 52580

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Table of contents CORN pg 7-13

SOYBEANS pg 15-19

Cereals pg 21-23

The right decision Maximum economic production has never been more essential, or more achievable. The job starts with choosing the right experts, like Mike Cowbrough by tom button Opportunity doesn’t mean what it used to mean. Probably, that’s a good thing. In a less volatile environment, opportunity used to bubble up within a marketplace driven by production fundamentals. How many acres have been planted? How dry is Illinois? How big is the cattle herd? Such created a comprehensible price range. Today’s market by contrast is tossed about by global economic policy, by the shakiest speculation about weather, and by the unfathomable impulses of investors. But opportunity is also made by farmers taking much more control of their pricing with faster, more sophisticated marketing tools. Which is a good thing, because the one thing we can be sure of is that if a farm is going to thrive, it must create and exploit its share of wins. Waiting for opportunity won’t cut it, especially if your eyes are on long-term competitiveness. But as we also know, the shrewdest business model is nothing without bushels in the field, produced cost-effectively and within a manageable level of risk. That’s why we are again pleased to bring you OMAFRA weed expert Mike Cowbrough’s ratings to help you select the optimum herbicide treatments for your farm. As you know, Mike’s expertise is practical and his recommendations are farm-based. In today’s world, they’re an opportunity.

Tom Button, Editor, Country Guide tom.button@fbcpublishing.com

Weed Management Guide 2016

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corn Table 1....................8 Weed control ratings for pre-plant burndown treatments in corn

Table 2...................8

Weed control ratings for pre-emergent herbicide treatments in corn

Table 3.................10 Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in corn

Table 4................. 12 Emerged perennial weed and volunteer crop control ratings for post-emergent herbicides in corn

Weed Management Guide 2016

Table 1. Weed control ratings for pre-plant burndown treatments in corn

Canola, volunteer (RR)

Carrot, wild

Chickweed

Clover, red

Dandelion

Fleabane, Canada

9 9 9

Broadleaf plantain

7 9 9

Burdock (2nd year)

7 8 9

Burcucumber

9 9 9

Buckwheat, wild

Witchgrass

9 9 9

Atriplex, spreading

Sandbur

9 9 9

Alfalfa, volunteer

Quackgrass

9 9 9

Azuki bean, volunteer

Foxtails

Bluegrass, annual

Tolerant hybrids

Herbicide Treatment

Mode of action

Weed species typically found at time of burndown

<5 6 8

6 9 9

0 0 0

7 8 9

9 9 9

7 8 9

7 9 9

9R 9R 9R

Glyphosate: Emerged weed control ratings at 4 weeks after application Glyphosate (1X rate) Glyphosate (2X rate) Glyphosate (3X rate)

9 9 9

All All All

9 9 9

7 8

Tank-mix partners with glyphosate (1X rate): Weed control ratings at 8 weeks after application – in other words “If I add a herbicide to glyphosate, will it improve 2,4-D ester 700 Aatrex 480 Banvel II, Hawkeye or Oracle + 2,4-D Banvel II, Hawkeye or Oracle + Aatrex 480 Battalion Co-pack (Elim EP + Dual II Magnum + Banvel II) Broadstrike RC Callisto + Aatrex 480 Converge XT Co-pack (Converge Flexx + Converge 480) Eragon + Merge Engarde Co-pack (Elim EP + Callisto) Focus Co-pack (Pyroxasulfone 85 + Aim EC) Integrity Lumax EZ Marksman Prowl H2O

9,4 9,5 9,4,4 9,4,5 9,2,15,4 9,2 9,27,5 9,27,5 9,14 9,2,27 9,15,14 9,15,14 9,15,5,27 9,4,5 9,6

All All All All All All All All All All All All All All All

<5 8

<5 9

9 8 9 <5

9 6

8 5

8 9 9 9

8 6 6 6 <5 6

9 9 9 <5 8

6 8

9 8 9 8 9

8 9 9

<5 9 9 9 9 9 9 8

7 6 6

9 8 9 9 9

9 <5 8 8 8 8 9 9 9

<5 <5 <5 <5 6 6 5

9 9 9 8

9 9

<5 <5

9 9 9 8 9 9

9 9 9 9R 8 <5 9

9 7

9 9 9 9

7 9

9 8 9 <5

9 9

<5 <5

NC 8

8 9

Herbicides and Co-packs that contain glyphosate: Emerged weed control ratings at 4 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

All All

NI NI

9 9

NI 9

NI NI

NC 9

NI NI

NC 81

8 8

Table 2. Weed control ratings for pre-emergent herbicide treatments in corn (Weeds are not emerged at the time of application)

Buckwheat, wild

Bur-cucumber

Chickweed

Cocklebur

Beggarsticks, nodding

Atriplex, spreading

Wild oats

Broadleaf weeds

Witchgrass

Sandbur

Proso millet

Foxtails

Fall panicum

Crabgrass

Barnyard grass

Crop tolerance

Tolerant hybrids

Field corn

Seed corn

Sweet corn

Herbicide Treatment

Mode of action

Grassy weeds (Annual)

9 8 9 9 9 8 8 <5 NI NI <5 9 9 9 NI 9 9

5 NI 5 NI NI NI 5 NC NI NI NI NI NI 5 NI NI 5

9 9 9 9 8 9 9 NC NI NI NI 9 9 9 9 NI 9

<5 6 6 NI 7R 7 7 0 <5 <5 NC 8 7 6 NI NI <5

Pre-emergence Herbicides and Co-packs: Weed control ratings at 8 weeks after application (Weed species not emerged at time of application) Aatrex 480 Banvel II, Hawkeye or Oracle Banvel II, Hawkeye or Oracle + Aatrex 480 Battalion Co-pack (Elim EP + Dual II Magnum + Banvel II) Broadstrike RC Callisto + Aatrex 480 Converge XT Co-pack (Converge Flexx + Converge 480) Dual II Magnum Engarde Co-pack (Elim EP + Callisto) Focus Co-pack (Pyroxasulfone 85 + Aim EC) Frontier Max Integrity Lumax EZ Marksman Prowl H2O Princep Nine-T, Simadex or Simazine Primextra II Magnum

5 4 4,5 2,15,4 2 27,5 27,5 15 2,27 15,14 15 15,14 15,5,27 4,5 6 5 15,5

Yes

Yes Yes Yes

Yes

Yes Yes Yes

Yes Yes

Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

All All All All All All All All All All All All All All All All All

E G G G E E E E E E E E E G G E E

<5 NC <5 9 NC NC 9 9 9 9 9 9 9 <5 8 9 9

<5 NC <5 8 NC 7 8 82 8 8 82 8 9 <5 72 9 82

<5 NC <5 9 NC NC 91 8 9 8 8 8 81 <5 8 81 8

<5 NC <5 8 NC NC 9 9 8 9 9 9 8 <5 8 8 9

<5 NC <5 7 NC NC 81 <5 NI NI <5 <5 <5 <5 <5 <5 <5

<5 NC <5 8 NC NC 7 6 8 6 6 NI NI <5 6 NI 7

<5 NC <5 9 NC NC 9 9 NI 9 9 9 9 <5 8 9 9

9 NC NI NI NC NI 9 NI NI NI NI NI NI NI NI NI NI

<5 8 9 NI NI 9 8 NI NI NI NI 8 9 9 NI NI <5

NI NI NI NI 9 NI NI <5 NI NI <5 NI NI NI NI NI NI

Weed Management Guide 2016

CORN | SOYBEANS | Cereals

Lettuce, prickly

Lamb’s-quarters

Mustards

Pigweed

Pineappleweed

Ragweed, common

Ragweed, giant

Three-seeded mercury

Violet (pre flower)

Vetch

Waterhemp

81 81

Horsetail, field

9 9 9

Horsenettle

Flower-of-an-hour

(Annual, biennial or perennial listed in alphabetical order)

<5 <5 NI

9 9 9

5 6 9

9R 9R 9R

8 9 9

7 8 9

<5 6 8

9 9 9

8 9 8

9 9 9 9 9R 9 9

9 9 9 9 9 9

9 9 9 9R 9 9

61,2

61,2 9

NI NI

8 8

NI NI

9 8 9 9 9 9

9 9

9 9 9 9

9 9 9 9 9

9 9

NI NI

7 9R 9 9 9 8R 9 9 8 8 7 8 9 9

9 <5 7 7 7 7R 5 6 7 5

9 9 7 9

5 5 7

9 9

NI NI

6 6

Three-seeded mercury

Ragweed, giant

control of the target weeds”

91 <5 91

61,2

61,2 91

6 9 8 <5 9 9

9 9 9

91 91

<5 9 9 9 9R 8 <5 0 NI NC NC 9 8 9 <5 NI <5

NI NI NI NI 8 NI NI NC NI NI NI NI NI NI NI NI NI

9 8 9 9 NI 9 9 NI NI NI NI 9 9 9 NI NI 9

9 9 9 8 8 9 9 <5 9 <5 <5 8 9 9 NI 9 9

Weed Management Guide 2016

9R 9 9 9 9R 9 9 <5 9 8 <5 9 9 9 8 9R 9R

NI NI NI NI NI NI NI NC NI NI NC NI NI NI NI NI NI

9 6 9 8 9 9 9 <5 9 9 <5 9 9 9 NI 9 9

9 9 9 8 7R 9 9 81 9 9 81 9 9 9 NI 9 9

8R 9 9 9 9R 9 9 81 9 9 81 9 9 9 8 9R 9

7R 9 9 9 8R 9 9 <5 8 7 <5 8 8 9 <5 9R 7R

<5 7 7 7 7R 5 6 NC 5 NC NC 5 5 7 NC <5 <5

9 <5 9 NI 8 NI 9 NC NI NI NC NI NI 9 NI NI 9

<5 8 8 8 9 9 9 NC 9 6 NC 9 9 8 NI 7 <5

Waterhemp

Corn Velvetleaf

Ragweed, common

Pigweeds

Nightshade

Mustards

Lettuce, prickly

Lamb’s-quarters

Lady’s thumb

Jimsonweed

Flower-of-an-hour

Fleabane, Canada

(Annual, winter annual)

< 5R 6 6 NI < 5R 9 9 6 NI 9 6 NI 9 6 7 NI 9

Table 1

1 Top growth burnoff only, regrowth will occur. 2 The addition of Merge at 0.4 l/ac. is required

to achieve this level of control.

3 Two applications will be required to achieve this

level of control throughout the season.

R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Table 2

1 The highest labelled rate is required to

achive this level of control.

2 The addition of Callisto or Callisto + Aatrex

will improve control of this species.

R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Tolerant Hyrbid Abbreviations

All = This treatment can be applied to any corn hybrid. RR = This treatment can only be applied to “Roundup Ready” corn hybrids. LL = This treatment can only be applied to “Liberty Link” corn hybrids. EN = This treatment can only be applied to “Enlist” corn hybrids.

Table 3. Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in corn atriplex, spreading

beggarsticks, nodding

biennial wormwood

buckwheat, wild

bur-cucumber

NC NC <5 9 NC <5 NC 9 NC NC 9 9 NC 91 9 91 7 91 NC 91 <5 NC 9 NC NC NC 9 81 NC 9

7 NI <5 NI 6 7 <5 6 <5 5 7 NI 7 NI NI NI <5 8 <5 9 7 7 NI 7 6 NI <5 NI NI NI

NI NI NI NI NI NI 9 NI NI NI NI NI NI <5 NI <5 NI NI NI NI NI NI NI NI NI NI NI NI NI NI

NI NI 9 NI 9 9 7 9 NI NI NI NI 9 NC NI NC NI NI NI NI 9 NI NI 9 9 NI NI NI NI NI

<5 <5 9 NC 9 9 7 9 9 8 8 9 9 <5 9 <5 8 9 9 9 9 <5 9 9 NI NI 9 NI 8 NC

NI NI 5 NI <5 6 NI <5 NI <5 5 NI <5 NC NI NI NI NI 6 NI 6 NI 5 8 7 6-7 5 NI NI NI

9 9 NI 9 NC NI NI NI 9 NI 9 9 5 9 9 9 83 9 9 NI NI

9 9

7/8 8

8 8

9 9

7/8 8

8 8

9 9

chickweed

witchgrass

wild oats

sandbur

proso millet

foxtails

fall panicum

crabgrass

Barnyard grass

Crop tolerance

Tolerant hybrids

Field corn

Seed corn

Sweet corn

Herbicide Treatment

Mode of action

Grassy weeds (Annual)

Post-Emergent Treatments for “All” Field Corn Hyrbids – Emerged weed control ratings at 4-6 weeks after application 2,4-D 2,4-DB Aatrex 480 + Crop Oil Accent Banvel II, Hawkeye or Oracle Banvel II, Hawkeye or Oracle + Aatrex 480 Basagran Forté Battalion Co-pack Buctril M, Badge, Mextrol or Logic M Callisto + Aatrex 480 Converge XT co-pack Destra co-pack (Destra 75DF/Ultim + Callisto) Distinct Dual II Magnum Engarde Co-pack Frontier Max Impact or Armezon + Aatrex 480 Integrity Laddok Lumax EZ Marksman MCPA Option + Aatrex 480 Pardner, Bromotril, Brotex or Koril + Aatrex 480 Peak Permit Primextra II Magnum Prowl H2O Tropottox Plus, Clovitox Plus or Topside Ultim

4 4 5 2 4 4,5 5 2,15,4 4 27,5 27,5 2,27 19,4 15 2.27 15 27,5 15,14 6,5 15,5,27 4,5 4 2 6,5 2 2 15,5 6,5 4 2

Yes Yes

Yes

Yes Yes

Yes

Yes Yes Yes Yes Yes

Yes Yes

Yes

Yes Yes Yes Yes

Yes Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All

F F E E G G G G P E E G G E E E E E E E G P G E E G E E G G

NC NC <5 9 NC <5 NC 9 NC NC 9 9 NC 91 9 91 7 91 NC 91 <5 NC 9 NC NC NC 9 81 NC 9

NC NC NC 72 NC NC NC 8 NC 82 9 8 NC 81 8 81 72 81 NC 81 NC NC 72 NC NC NC 83 81 NC 72

NC NC NC 9 NC NC NC 9 NC NC 9 9 NC 81 9 81 7 81 NC 81 NC NC 9 NC NC NC 8 81 NC 9

NC NC <5 9R NC <5 NC 9 NC NC 9 9 NC 91 9 91 7 91 NC 91 <5 NC 9R NC NC NC 9 81 NC 9R

NC NC <5 9 NC <5 NC 9 NC NC 8 9 NC <5 9 <5 7 <5 NC <5 <5 NC 9 NC NC NC <5 <5 NC 9

NC NC NI 8 NC NI NC 9 NC NC 7 8 NC 61 8 61 NI NI NC NI NI NC 9 NC NC NC 7 81 NC 9

NC NC 9 9 NC NI NC 9 NC NI 9 9 NC NI 9 NI NI NI NI NI NI NC 9 NI NC NI NI NI NI 9

<5 <5 9 NI 9 9 NI 9

Post-Emergent Treatments for “Roundup Ready” Corn Hybrids – Weed control ratings at 4 weeks after application Glyphosate 1X rate Glyphosate 2X rate

9 9

Yes Yes

RR RR

E E

9 9

Post-Emergent Herbicides and co-packs containing glyphosate for “Roundup Ready” Corn Hybrids – Weed control ratings at 8 weeks after application Callisto GT Galaxy 2 co-pack (Ultim + Polaris) Halex GT + Aatrex 480

27,9 2,9 15,27,9,5

Yes

Yes Yes Yes

RR RR RR

E E E

NC NI 9

82 82 9

NC 8 9

NC NI <5

NC NI 5

NI 9 9

NC 8 9

5 NI 5

NI NI NI

8 8 9

<5 NI <5

9 NI 9

Post-Emergent tank-mix partners with glyphosate (1X rate) for “Roundup Ready and Enlist” Corn Hybrids – Weed control ratings at 8 weeks Aatrex 480 Callisto + Aatrex 480 Engarde Co-pack Destra co-pack (Destra 75DF/Ultim + Callisto) Impact or Armezon + Aatrex 480 Lumax EZ Marksman Permit Primextra II Magnum Vios G3

9,5 9,27,5 9,2,27 9,2,27 9,27,5 27,9 9,4,5 2,9 9,15,5 2,27,9

Yes Yes

Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

RR, EN RR, EN RR, EN RR, EN RR, EN RR, EN RR, EN RR, EN RR, EN RR, EN

E E E G E E G G E E

<5 NC 9 9 7 9 <5 NC 9 9

NC 82 8 8 72 8 NC NC 83 8

NC NC 9 9 7 8 NC NC 8 9

<5 NC 9 9 7 9 <5 NC 9 9

<5 NC 9 9 7 <5 <5 NC <5 7

NI NC 8 8 NI NI NI NC 7 8

9 NI 9 9 NI NI NI NI NI 9

<5 NC 9 9 7 9 <5 NC 9 9

<5 5 NI NI <5 9 7 NI <5 NI

NI NI NI NI NI NI NI NI NI NI

9 NI NI NI NI NI 9 NI NI NI

9 8 9 9 8 9 9 NI 9 9

5 <5 NI NI NI NI 6 6-7 5 6

9 9 NI NI NI 9 9 8 9 8

Post-Emergent Treatments for “Liberty Link and Enlist” Corn Hybrids – Weed control ratings at 4 weeks after application Liberty 200SN

Yes

LL, EN

Post-Emergent tank-mix partners with Liberty for “Liberty Link and Enlist” Corn Hybrids – Weed control ratings at 8 weeks after application Aatrex 480 Callisto + Aatrex 480 Engarde Co-pack Impact or Armezon + Aatrex 480 Marksman Primextra II Magnum Vios G3

9,5 9,27,5 9,2.27 9,27,5 9,4,5 9,15,5 2,27,10

Yes Yes

Yes

Yes Yes Yes Yes Yes Yes Yes

LL, EN LL, EN LL, EN LL, EN LL, EN LL, EN LL, EN

E E E E G E E

<5 NC 9 7 <5 9 9

NC 82 8 72 NC 83 8

NC NC 9 7 NC 8 9

<5 NC 9 7 <5 9 9

<5 NC 9 7 <5 <5 7

NI NC 8 NI NI 7 8

9 NI 9 NI NI NI 9

<5 NC 9 7 <5 9 9

<5 5 NI <5 7 <5 NI

NI NI NI NI NI NI NI

9 NI NI NI 9 NI NI

9 8 9 8 9 9 9

5 <5 NI NI 6 5 6

9 9 NI NI 9 9 8

NI NI

9 9

NI NI

NI 94

NI 9

NI NI

9 9

Post-Emergent Treatments for “Enlist” Corn Hybrids – Weed control ratings at 8 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

Yes Yes

EN EN

E E

NI 9

8 9

NI 9

Weed Management Guide 2016

CORN | SOYBEANS | Cereals

cocklebur

chamomile, scentless

fleabane, Canada

flower-of-an-hour

jimsonweed

lady’s thumb

lamb’s-quarters

lettuce, prickly

mustards

nightshade

pigweeds

ragweed, common

ragweed, giant

three-seeded mercury

velvetleaf

violet, field

waterhemp

Broadleaf weeds (Annual, winter annual)

8 8 6 NC 9 9 9 9 9 8 7 5 8 0 5 NC 7 8 5 7 9 7 6 7 9 83R <5 NI 8 NC

<5 NI <5 NI <5 <5 NI NI NI <5 NI NI <5 NI NI NI NI NI NI NI <5 <5 NI 7 NI NI NI NI NI NI

8 NI <5 NI 9 9 5 9 6 8 6 NI 8 0 NI NC 6 9 NI 7 9 6 <5 8 7R 83R <5 NI NI NI

NI NI 7 NI 9 9 8 9 NI NI NI NI <5 NC NI NI NI NI 6 NI 9 NI 7 8 7 8 NI NI NI NI

NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI 83 9 NI NI NI

<5 NC 9 NI 9 9 9 9 9 9 9 9 9 <5 9 <5 9 8 9 9 9 NC 9 9 9 83 9 6 NC 5

9 7 9R NI 9 9 8 9 9 9 9 9 9 <5 9 <5 9 9 9 9 9 9 9R 9 9R 83 9R 9 7 5

8 8 7 NC 8 9 <5 8 8 NI NI NI 9 NC NI NI NI NI NI NI 9 8 7 9 8 NI NI NI NI NC

9 8 9R NC 6 9 9 6 9 9 9 9 6 <5 9 <5 9 9 9 9 9 9 9R 8 9 8 9 9R 8 7

7 7 9 NC 9 9 7 9 9 9 9 9 9 81 9 81 9 9 9 9 9 NI 9 9 NI NI 9 8 7 <5

9 9 9R 9R 9 9 7 9 8 9 9 9 9 81 9 81 9 9 9R 9 9 7 9R 8R 9R 8R 9 8R 9 9R

8 8 9R NC 9 9 7 9 9 9 9 8 9 <5 8 <5 9 8 9 8 9 9 9R 9 9R 8R 7R <5 9 NC

9 NI 7 NC 8 9 6 8 7 6 7 7 7 NC NI NC 5 5 NI 5 9 8 7 7 7R 8R <5 NC NI NC

9 NI 9 NI 7 9 NI 7 NI <5 NI NI 9 NC NI NC NI NI NI NI 9 NI 9 9 8 NI 9 NI NI NI

8 8 <5 NC 9 9 9 9 9 9 9 9 9 NC 9 NC 7 9 9 9 9 7 <5 9 9 8 <5 6 9 5

5 NI 6 NI <5 NI <5 <5 NI NI NI NI NI NC NI NC NI 8 NI NI NI NI 6 NI 6 NI NI NI NI NI

NI NI NC NI 8 9 <5 8 NI 9 9 NI 8 61 NI 61 NI NI NI 9 9 NI NC 5 <5 NI 9 7 NI NI

9 9

9R 9R

9 9

7/8 8

9 9

9R 9R

7R 8R

8 9

9 9

7/8 8

9 9

5 NI 8

NI NI NI

NI NI 6

NI NI NI

9 8 9

9 7 9

NI NI NI

9 NI 9

9 7 9

9 8R 9

8 7R 9

NI NI 6

NI NI NI

9 7 9

NI NI NI

NI NI 9

after application 6 8 5 7 7 8R 9

NI NI NI NI NI NI NI

<5 6 NI 7 <5 8R 9

7 NI NI NI NI 8 9

NI NI NI NI NI 8 NI

9 9 9 9 9 8 9

9R 9 9 9 9 8 9

7 NI NI NI NI NI 9

9R 9 9 9 9 8 9

9 9 9 9 9 NI 9

9R 9 9 9 9 8R 9

9R 9 8 8 9 8R 9

7 6 NI 5 5 8R 9

9 <5 NI NI NI NI 9

<5 9 9 9 7 8 9

6 NI NI NI NI NI NI

NC 9 NI 9 NI NI 9

<5 8

NI NI

<5 6

NI 8

9 8

9 9

9R 9

NI NI

9 9

7R 9

<5 8

9 9

8/9

2 Large crabgrass only.

6 8 5 7 9 <5 8

NI NI NI NI NI NI NI

<5 6 NI <5 9 <5 6

7 NI NI NI 9 NI 8

NI NI NI NI NI 9 8

9 9 9 9 9 9 9

9R 9 9 9 9 9R 9

7 NI NI NI 9 NI NI

9R 9 9 9 9 9 9

9 9 9 9 9 9 9

9R 9 9 9 9 9 9

9R 9 8 9 9 7R 9

7 6 NI 5 9 <5 8

9 <5 NI NI 9 9

<5 9 9 7 9 <5 8

6 NI NI NI NI NI

NC 9 NI NI 9 9 9

4 Top growth control only.

8 9

NI NI

8 9

NI NI

NI 9

9 9

NI NI

9 9

NI 9

9 9

NI NI

NI 9

NI NI

Corn Table 3

1 Weeds with more than two leaves emerged at

time of application will not be controlled.

3 Weeds cannot be emerged at time of application

to achieve this level of control.

Weed Management Guide 2016

R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Tolerant Hyrbid Abbreviations

Table 4. Emerged perennial weed and volunteer crop control ratings for post-emergent herbicides in corn

redtop

sow-thistle, perennial

Swamp smartweed

thistle, Canada

vetch, tufted

wire-stem muhly

quackgrass

nutsedge, yellow

milkweed

horsetail, field

horse-nettle

dandelion

carrot, wild

bindweed, field

Crop tolerance

Tolerant hybrids

Field corn

Seed corn

Sweet corn

Herbicide Treatment

Mode of action

Perennial weeds (Listed in alphabetical order)

NC NC NC

NC NC NC 8 NC NC NI NC NC NC NI NC NI NC NC NC NC 9 NC NC NI NC 9

NI NI 8 NC 8 6-9 7 NI NI <5 NI 8 NI 6 6-9 9 NI NC 7 8 NI NI NC

NI NI <5 NC 6 NI NI NI NI NI NI 5 NI NI NI <5 NI NC <5 6 NI NI NC

7-9 7-9 <5 NC 8 7-9 NI NI <5 <5 NI 9 NI NI 7-9 8 7-9 NC 7 5-9 NI 8 NC

8 NI NI NC 9 NI 9 <5 5 9 NI 9 NI NI NI 8 7 NC NI 7 NI NI NC

NC NC NC <5 NC NC NI NC NC NC NI NC NI NC NC NC NC 9 NC NC NI NC 6

5 NI

8 9

5 7

8 9

7-8

NC 83

NI NI

NC 83

9 9

NI NI

Pre-Emergent Treatments for “All” Corn Hyrbrids – Control ratings for unemerged weeds at 4-6 weeks after application Dual II Magnum Frontier Max Integrity

15 15 15,14

Yes Yes Yes

Yes Yes

Yes Yes Yes

All All All

E E E

NC NC <5

NC NC 6

NC NC 7

NC NC NC

NC NC 5

NC NC NC

8 8 8

NC NC NC

Post-Emergent Treatments for “All” Corn Hyrbrids – Control ratings for emerged weeds at 4-6 weeks after application 2,4-D 2,4-DB Aatrex 480 + Crop Oil Accent Banvel II, Hawkeye or Oracle Basagran Forté Battalion Co-pack Broadstrike RC Buctril M, Badge, Mextrol or Logic M Callisto + Aatrex 480 Converge XT Co-pack Distinct Engarde Co-pack Impact or Armezon + Aatrex 480 Laddok Marksman MCPA Option + Aatrex 480 Pardner, Bromotril, Brotex or Koril + Aatrex 480 Peak Permit Tropottox Plus, Clovitox Plus or Topside Ultim

4 4 5 2 4 6 2,15,4 2 4 27,5 27,5 19,4 2.27 27,5 6,5 4,5 4 2,5 6,5 2 2 4 2

Yes Yes

Yes

Yes Yes

Yes

Yes Yes Yes

Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

All All All All All All All All All All All All All All All All All All All All All All All

F F E E G E G E P E E G E E E G P G E E G G G

7 7 7 NC 8 <5 NI NI 7 <5 NI 8 NI NI 7 8 7 NC 7 6 6-7 8 NC

<5 <5 <5 NC <5 <5 NI NI <5 6 NI 7 NI <5 5 <5 <5 NC 6 9 NI NI NC

<5 <5 <5 NC 6 <5 NI NI <5 6 NI 6 NI NI <5 6 <5 NC <5 5 NI <5 NC

NI NI NI NI 81 <5 NI NI NI NI NI 81 NI NI NI 81 NI NI NI 81 NI NI 82

<5 <5 <5 5-9 <5 <5 NI 7-8 7 <5 NI <5 NI <5 <5 <5 7 5-9 <5 <5 6 <5 6-9

<5 <5 <5 6 6 <5 NI NI 6 <5 NI 6 NI NI <5 6 6 6 <5 6 7 6 6

NC NC NC <5 NC 7 NI NI NC <5 NI NC 7 NC 7 NC NC <5 NC NC 9 <5 <5

NC NC NC 9 NC NC 7 NC NC NC NI NC 7 NC NC NC NC 9 NC NC NI NC 9

Post-Emergent Treatments for “Roundup Ready” Corn Hyrbrids – Control ratings for emerged weeds at 4 weeks after application Glyphosate 1X rate Glyphosate 2X rate

9 9

Yes Yes

RR RR

E E

7 8

<5 7-9

6 8-9

8 9

<5 6

9 9

6 8

9 9

7-8 8-9

Post-Emergent Treatments for “Liberty Link” Corn Hybrids – Weed control ratings for emerged weeds at 4 weeks after application Liberty 200SN

Yes

6-7

Post-Emergent Treatments for “Enlist” Corn Hybrids – Weed control ratings for emerged weeds at 4 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

Yes Yes

EN EN

E E

NC 83

NC <5

NC 8

NI NI

8 8

NI 93

NI 83

NC 9

NI 9

Weed Management Guide 2016

CORN | SOYBEANS | Cereals

alfalfa, volunteer

adzuki beans, volunteer

canola, volunteer

canola (LL), volunteer

canola (RR), volunteer

clover (red), volunteer

cereals, volunteer

Volunteer crops

NC NC NC

NC NC NI

NC NC 9

<5 <5 <5

6 0 <5 <5 8 0 9 0 <5 <5 <5 8 NI <5 <5 8 <5 <5 <5 7-8 <5 <5 <5

NI NI 8-9 NI 8-9 <5 8-9 NI NI 8-9 NI 6-9 8-9 NI NI 9 NI NI 8-9 6-9 0 NI NI

9 NI <5 9 8 NI 9 8 8 9 9 8 9 9 NI 8 8 9 9 9 NI NI 9

<5 <5 <5 <5 9 <5 9 8 0 9 NI 9 9 9 <5 9 0 <5 <5 8 NI 0 <5

NC NC <5 8 <5 NC 8 NC NC <5 <5 <5 8 <5 <5 <5 NC 8 <5 NC NC NC 8

6 7

9 9

NC NC

6 7

9 9

NI NI

9 9

<5 <5

9 9

Corn Table 4

1A tank mix with Ultim (nicosulfuron/rimsulfuron)

is required to achieve this level of control.

2A tank mix with Distinct, Marksman or dicamba

is required to achieve this level of control.

3 Two applications will be required to achieve this

level of control throughout the season.

R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Tolerant Hyrbid Abbreviations

Weed Management Guide 2016

ENGARDE DELIVERS THE OL’ ONE, TWO. TM

Twice the protection in one powerful herbicide. DuPont Engarde corn herbicide delivers twice the performance with two modes of action; twice the control with knockdown and residual activity; twice the coverage with broadleaf and grassy weeds; and twice the flexibility with a window of application from pre-emergence to the two-leaf stage. Find out more about Engarde today and how you can receive an instant discount of $2 per acre with the DuPont Head Start Program. Ask your retailer about Engarde today. For more information, call the DuPont FarmCare Support Centre at 1-800-667-3925 or visit engarde.dupont.ca TM

DuPont Engarde

herbicide

As with all crop protection products, read and follow label instructions carefully. Member of CropLife Canada. Unless indicated, trademarks with ®, TM or SM are trademarks of DuPont or affiliates. © 2016 DuPont.

1489 Engarde Brand Ad_CountryGuideWeedGuide.indd 1

1/12/16 10:57 AM

soybeans Table 1..................16 Weed control ratings for pre-plant burndown treatments in soybeans

Table 2.................16

Weed control ratings for pre-emergent herbicide treatments in soybeans

Table 3.................18 Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in soybeans

Table 4.................18 Emerged perennial weed and volunteer crop control ratings for post-emergent herbicides in soybeans

Weed Management Guide 2016

Table 1. Weed control ratings for pre-plant burndown treatments in soybeans Fleabane, Canada

Flower-of-an-hour

<5 6 8

6 9 9

0 0 0

7 8 9

9 9 9

7 8 9

7 9 9

9R 9R 9R

9 9 9

8 9

9 9 9 9

<5 7

Tank-mix partners with glyphosate (1X rate): Weed control ratings at 8 weeks after application

<5 8 8

<5 <5 <5

9 9

9 <5 9

<5 0 <5 0

9 8 9 8 9 5 9 9 7 7

0 0

9 9

8 7 8 9 9

NI NI

9 8 9

NI NI

8 8

9 9

NI NI

NC 81

9 8 8

9 9 9

7 9

NC 9

9 9 8 8 5 5 6

Herbicides and Co-packs that contain glyphosate: Emerged weed control ratings at 4 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

5 4 6

5 <5 <5

9 9

6 6 6

9 9 9 9 9 9 9 9

7 8

Horsenettle

Dandelion

Herbicides and Co-packs that contain glyphosate: Weed control ratings at 8 weeks after application

Clover, red

EN EN

7 8

Chickweed

4,9 4,9

7 9 9

Carrot, wild

0 0 0 0 <5 <5 0 0 <5 0 0 0 <5 0

2,4-D ester 700 Blackhawk Co-pack (2,4-D Ester 700 + Aim EC) Boundary LQD Broadstrike RC Classic or Chaperone Conquest LQ Co-pack (Pursuit + Sencor 480F) Eragon + Merge Fierce (84 g/ac.) FirstRate Focus Integrity Lorox L (High rate) Optill Prowl H2O Perfecta co-pack (Valtera + Tricor) Pursuit, Phantom or Nu-Image Sencor or Tricor (High rate) Step Up Co-pack (Chaperone + Valtera) Valtera (High rate)

7 8 9

Canola, volunteer (RR)

All All All All All All All All All All All All All All All All All All All

2,9 9,14 9,2 9,2,14

broadleaf plantain

9,4 2,14 9,15,5 9,2 2 9,2,5 9,14 9,15,14 9,2 9,15,14 9,15,14 9,5 9,2,14 9,6 14,5 9,2 9,5 9,2,14 9,14

Assignment Co-pack (Pursuit + RU Weathermax) Flexstar GT + Turbocharge Guardian Co-pack (Polaris + Classic) Guardian Plus II co-pack (Polaris + Guardian Plus WDG)

9 9 9

burdock (2nd year)

All All All

burcucumber

<5 <5 <5 <5

9 9 9

atriplex, spreading

Glyphosate (1X rate) Glyphosate (2X rate) Glyphosate (3X rate)

alfalfa, volunteer

quackgrass

All All All All

Glyphosate: Emerged weed control ratings at 4 weeks after application

azuki bean, volunteer

foxtails

9 9 9

bluegrass, annual

9 9 9

Tolerant varieties

0 0 0

Mode of action

Herbicide Treatment

corn, volunteer (RR)

Weed species typically found at time of burndown

81 81

8 8 9R 8R <5 9 8R

7 7

<5 <5

NC 8

9 <5 9 <5 <5 9 5 5 8 9

NI NI

Table 2. Weed control ratings for pre-emergent herbicide treatments in soybeans (weeds are not emerged at the time of application) Flower-of-an-hour

Fleabane, Canada

Cocklebur

Chickweed

Chamomile, scentless

Bur-cucumber

Buckwheat, wild

Beggarsticks, nodding

Atriplex, spreading

Wild oats

Broadleaf weeds (Annual, winter annual)

Witchgrass

Sandbur

Proso millet

Foxtails

Fall panicum

Crabgrass

Barnyard grass

Crop tolerance

Tolerant varieties

Herbicide Treatment

Mode of action

Grassy weeds (Annual)

Pre-emergence Herbicides and Co-packs: weed control ratings at 8 weeks after application (Weed species not emerged at time of application) Assignment Co-pack Authority Boundary LQD Broadstrike RC Canopy Pro Co-pack (Classic + Tricor 75 DF) Classic or Chaperone Command 360 ME Conquest LQ Co-pack (Pursuit + Sencor 480F) Dual II Magnum Fierce FirstRate Focus Co-pack (Pyroxasulfone 85 + Aim EC) Freestyle Co-pack (Classic + DuPont Imazethapyr) Frontier Max Lorox L Optill Perfecta co-pack (Valtera + Tricor) Prowl H2O Pursuit, Phantom or Nu-Image Sencor or Tricor (Low rate) Sencor or Tricor (High rate) Step Up co-pack (Chaperone + Valtera) Treflan, Bonanza or Rival Triactor Co-pack (Nu-Image + Chaperone + Valtera) Valtera 16

2,9 14 15,5 2 2,5 2 27 2,5 15 15,14 2 15,14 2,2 15 5 2,14 14,5 6 2 5 5 2,14 3 2,2,14 14

All All All All All All All All All All All All All All All All ALL All All All All All All All All

G E E E G G G G E G E E G E G E G G G G G G G G G

9 NC 6 NC 8 9 9 9 NC 9 7 9 5 7 7 8 7 7 7 <5 9 7 <5

9 NC 6 NC 9 7 9 9 NC 9 7 9 5 7 6 8 7 6 6 <5 9 7 <5

8 NC 6 NC 8 7 8 NI NC 8 7 8 5 7 6 8 7 7 7 <5 8 7 <5

9 NC 6 <5 91 9R 9 9 NC 9 9R 9 5 9R 5 8 9R 5 5 5 9 9R <5

<5 NC 6 NC NI 7 <5 NI NC NI 7 <5 5 7 <5 <5 7 <5 <5 NI 6 7 NI

<5 NC <5 NC 6 72 <5 6 NC 6 72 <5 <5 72 NI 8 72 NI NI NI 6 72 <5

9 NC 6 NC 8 8 9 NI NC 9 7 9 5 7 8 8 7 8 8 <5 9 8 <5

NC NC 82 NC NI 82 NC NI NC NC 82 NC NC NC 82 NC NC 82 82 NI 8 NI NI

NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI

NI 9 NI NI 9 NI <5 NI 9 NI 8 <5 9 8 NI NI 8 NI 7 9 NI NI NI

8 9 NI 9 8 NI 8 9 <5 NI NI NI 8 <5 8 8 9 NI 8 7 7 7 <5 9 7

NI NI NI NI NI NI NC NI NI NI NI NI NI NI NI NI NI NI 7 8 NI NI NI

NI NI 82 NI NI 82 NC NI NI NI NI NI NI NI NI NI NI 82 82 NI NI NI NI

NI 8 NI NI NI 9 NC 9 9 NI 9 NI 9 9 9 9 9 9 9 9 9 9 9

NI 7R 7R NI 6 8 0 <5 9R <5 7R NC 5 7R 9 NI 7R 7 7 7R <5 8 <5

6 9R 8R 8R <5 <5 0 <5 9R NC 8R NC <5 9 NI <5 <5 6 91 8R <5 8R <5

NI 8 NI NI NI NI NC NI NI NI 9 NI 9 9 NI NI 9 NI 9 NI NI NI NI

Weed Management Guide 2016

CORN | SOYBEANS | Cereals Three-seeded mercury

6 7

9 9 8 8

9R 9 7 8

61,2 61,2

8 9 4

61,2

NI 8 9 NI 8 9 <5 7 NI <5 9 <5 9 9 9 NI 9 9 9 9 <5 9 7

9 9 9 9 9 9 8

9 9

Mustards

NI NI

9R 6 6 9 9 9 9 9R 9R 7 7

7 9R 7R 9R

Lettuce, prickly

Lady's thumb

8 8

8 9

Lamb's-quarters

61,2 61,2

7 9R 6R 9R

9R 9 7 9R 9R 6R 8 9R <5 9 9R <5 9R <5 9 9R 9 8 9R 9R 9R 9 8 9 9

NI NI NI NI NI NI NC NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI NI

8 9 9 NI <5 9 <5 9 NI NI NI <5 9 9 9 NI 9 9 9 9 <5 9 8

Weed Management Guide 2016

9R 9 <5 9R 9

9 9R 9R 8 8 9 9

81,2

6 61,2

<5 9 <5 9

7 92 82 8

9 9 <5 <5 <5 5 61,2 61,2 <5 61,2

9 9 7R

6R 7 8R

6 <5 < 5R <5 <5

8 9 8

6 6 7

92 92

61,2

9 9 9 9 9

8 8R 9R <5 <5

7 6R 6 <5 <5

81,2

61,2

81,2 81,2

61,2 61,2

9 9

NI NI

9 9

6 6

91 91

Ragweed, common

61,2 61,2

4 7

7 7 6R 8R 5R 8R 8 7 9R

Pigweeds

Nightshade

61,2

9 9 9

9R 9 8 7R <5 NC <5 9R 81 9 <5 9 9R 81 9 9R 9 NI 9R <5 <5 9 <5 9 9

9R 9 8 9R 9R 7R <5 9R 81 9 9R 9 9R 81 9R 9R 9 8R 9R 9R 9R 9 8 9 9

8R 4 <5 8R 8R 5R 8 8R <5 7 9R <5 8R <5 8 8R 8 <5 8R 8R 8R 8R <5 8 7

NI NI

<5 7R 8R NI <5 6 NC <5 9R NC 8R NC 6 7 7 NC 6 7 7 8R <5 6 <5

NI 8 7 NI NI 5 NC NI 9 NI NI NC 7 6 9 NI 6 8 9 7 NI 5 9

<5 9 8 <5 9 9 NC 7 9 NI 9 NC 6 9 7 NI 9 7 7 8 <5 9 7

Waterhemp

4 6 8

Velvetleaf

7 8 9

Three-seeded mercury

9 9 9

Ragweed, giant

9 9 9

Waterhemp

Ragweed, giant 6

9 9

<5 9 5 <5

9 9 9

Vetch

Ragweed, common

8 9 9

<5 <5 NI

Violet (pre flower)

Pineappleweed

9R 9R 9R

Mustards

9R 9R 9R

Lamb's-quarters

<5 6 9

Lettuce, prickly

9 9 9

Horsetail, field

Pigweed

(Annual, biennial or perennial – listed in alphabetical order)

< 5R 9 6 < 5R < 5R < 5R NI < 5R 6 9 < 5R 9 < 5R 6 NC < 5R 9 7 < 5R < 5R < 5R 81,2 8 8 8

Soybeans table 1

1 Top growth burnoff only, regrowth will occur. 2 The addition of Merge at 0.4 l/ac. is required

to achieve this level of control.

table 2

1 The highest labelled rate is required to

achieve this level of control.

2 This level of control is achieved when the weed

is emerged at the time of application.

Tolerant Varieties

All = This treatment can be applied to any soybean variety. RR = This treatment can only be applied to “Roundup Ready” soybean varieties. LL = This treatment can only be applied to “Liberty Link” soybean varieties. EN = This treatment can only be applied to “Enlist” soybean varieties. R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Table 3. Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in soybeans Beggarsticks, nodding

Biennial wormwood

Buckwheat, wild

Bur-cucumber

Chamomile, scentless

Chickweed

Cocklebur

Fleabane, Canada

Atriplex, spreading

Witchgrass

Broadleaf weeds (Annual, winter annual)

Wild oats

Sandbur

Proso millet

Foxtails

Fall panicum

Crabgrass

Barnyard grass

Crop tolerance

Tolerant varieties

Herbicide Treatment

Mode of action

Grassy weeds (Annual)

NC NC NC NC NC 9 <5 9 9 8 <5 9 7

NC NC NC NC NC 7 7 7 7 NI NI 8 NI

NC NC NC NC NC 7 7 4 7 NI 8 8 8

NC NC NC NC NC NI NI <5 NI <5 NI NI NI

NC NC NC NC NC <5 <5 NI NI <5 <5 <5 NI

NC NC NC NC NC NI NI NI NI NI NI 9 9

NC NC NC NC NC 9 6 8R 9R 5 7 9 8R

NC NC NC NC NC 5 <5 8R 9R <5 <5 5 <5

Post-Emergent Treatments for “All” Soybean Varieties – Weed control ratings at 4-6 weeks after application Assure II or Yuma GL Excel Super Poast Ultra Select or Arrow Venture L Basagran Forté Blazer Classic or Chaperone FirstRate Pinnacle SG Reflex Cleansweep Co-pack (Pursuit + Basagran Forté) Pursuit or Panthom or Nu-Image

1 1 1 1 1 5 14 2 2 2 14 2,5 2

All All All All All All All All All All All All All

E E E E E G F G G G F/G G G

9 9 9 9 9 NC NC NC NC NC NC 8 8

8 8 8 8 8 NC NC NC NC NC NC 8 8

9 9 9 9 9 NC NC NC NC NC NC 6 6

9 9 9 9 8 NC NC NC NC NC NC 9R 9R

9 9 9 9 9 NC NC NC NC NC NC 7 7

9 8 7 7 9 NC NC NC NC NC NC NI 7

9 9 9 9 9 NC NC NC NC NC NC 8 8

9 9 9 9 9 NC NC NC NC NC NC 9 9

NC NC NC NC NC <5 NI NI NI 6 NI 5 NI

Post-Emergent Treatments for “Roundup Ready” Soybean Varieties – Weed control ratings at 4-6 weeks after application Assignment Co-pack (RU Weathermax + Pursuit) Flexstar Glyphosate 1X rate Glyphosate 2X rate Guardian Co-pack (Polaris + Classic)

9,2 9,14 9 9 9,2

RR RR RR RR RR

G G E E G

9 9 9 9 9

7/8 7/8 7/8 8 7/8

8 8 8 8 8

9 9 9 9 9

8 7/8 7/8 8 8

8 8 8 8 8

9 9 9 9 9

9R 9R 9R 9R 9R

Post-Emergent Treatments for “Liberty Link and Enlist” Soybean Varieties – Weed control ratings at 4-6 weeks after application Liberty 200SN

LL, EN

NI 94

NI 9

NI NI

9 9

8 9

NI NI

8 9

Post-Emergent Treatments for “Enlist” Soybean Varieties – Weed control ratings at 4-6 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

EN EN

E E

NI 9

8 9

NI 9

NI NI

9 9

NI NI

Table 4. Emerged perennial weed and volunteer crop control ratings for post-emergent herbicides in soybeans

Sow-thistle, perennial

Thistle, Canada

Vetch

Wire-stem muhly

Alfalfa, volunteer

Adzuki beans, volunteer

Canola, volunteer

Canola (LL), volunteer

Redtop

Quackgrass

Nutsedge, yellow

Milkweed

Horsetail, field

Horse-nettle

Dandelion

Carrot, wild

Bindweed, field

Crop tolerance

Tolerant varieties

Herbicide Treatment

Mode of action

Perennial weeds (Listed in alphabetical order)

NC NC NC NC NC 6-9 6-9 5-9 5-9 4-7 5-8 6-9 4-7

NC NC NC NC NC 7-9 6-9 7-9 7-9 4-8 5-9 7-9 5-9

NC NC NC NC NC <5 5 5 5 <5 5 <5 <5

7 5 6 6 8 NC NC NC NC NC NC <5 <5

NC NC NC NC NC 0 6 <5 <5 0 6 0 0

NC NC NC NC NC <5 <5 4-8 <5 <5 <5 <5 <5

NC NC NC NC NC NI NI 9 8 <5 8 9 9

1 1 1 1 1 5 14 2 2 2 14 2,5 2

All All All All All All All All All All All All All

E E E E E G F G G G F/G G G

NC NC NC NC NC <5 <5 <5 <5 <5 <5 <5 <5

NC NC NC NC NC <5 <5 6-9 2-7 <5 <5 2-6 2-7

NC NC NC NC NC <5 <5 6 <5 <5 <5 <5 <5

NC NC NC NC NC <5 <5 <5 6 <5 <5 <5 <5

NC NC NC NC NC <5 6 <5 <5 <5 6 <5 <5

NC NC NC NC NC <5 <5 9 <5 <5 <5 <5 <5

NC NC NC NC NC 7 <5 9 <5 <5 <5 7 7

9 <5 6 7 8 NC NC NC NC NC NC <5 <5

6 <5 6 7 7 NC NC NC NC NC NC NI NI

9,2 9,14 9 9 9 9,2

RR RR RR RR RR RR

G G E E E G

7 7 7 8 8 7

<5 <5 <5 7-9 7-9 <5

7 7 6 8-9 9 9

8 8 8 9 9 8

<5 6 <5 6 6 <5

9 9 9 9 9 9

6 6 6 8 8 9

9 9 9 9 9 9

7-8 7-8 7-8 8-9 8-9 7-8

8 8 8 9 9 8

5 5 5 7 8 5

8 8 8 9 9 8

6 6 6 7 8 6

9 9 9 9 9 9

Post-Emergent Treatments for “Liberty Link and Enlist” Soybean Varieties – Weed control ratings at 4-6 weeks after application Liberty 200SN

LL, EN

6-7

NC 83

9 9

NI NI

9 9

Post-Emergent Treatments for “Enlist” Soybean Varieties – Weed control ratings at 4-6 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

EN EN

E E

NC 83

NC <5

NC 8

NI NI

8 8

NI 93

NI 83

NC 9

NI 9

Weed Management Guide 2016

Flower-of-an-hour

Lady's thumb

Lamb's-quarters

Lettuce, prickly

Mustards

Nightshade

Pigweeds

Ragweed, common

Ragweed, giant

Three-seeded mercury

Velvetleaf

Violet, field

Waterhemp

CORN | SOYBEANS | Cereals

NC NC NC NC NC 8 6 7 8 8 7 8 7

NC NC NC NC NC 9 8 8 NI 8 8 9 9

NC NC NC NC NC 8 6 <5 <5 9R 6 8 8R

NC NC NC NC NC <5 <5 6 6 <5 6 <5 <5

NC NC NC NC NC 9 9 9 9 8 9 9 9

NC NC NC NC NC 7 8 <5 <5 <5 8 9R 9R

NC NC NC NC NC 7 9 9R <5 9R 9 9R 9R

NC NC NC NC NC 7 9 8R 9R 5 9 9R 9R

NC NC NC NC NC 6 7 8R 9R <5 7 7R 8R

NC NC NC NC NC 5 6 7 7 5 7 6 5

NC NC NC NC NC 9 7 8 9 8 6 9 9

NC NC NC NC NC <5 6 5 8 <5 7 5 5

NC NC NC NC NC <5 9 <5 <5 <5 9 <5 <5

9 9 9 9 9

8 8 7/8 8 8

9 9 9 9 9

9R 8 9R 9R 9R

7R 7R 7R 8R 7R

8 8 8 9 8

9 9 9 9 9

7/8 7/8 7/8 8 7/8

9 9 9 9 9

8/9

NI NI

NI 9

9 9

NI NI

9 9

NI 9

9 9

NI NI

NI 9

NI NI

Canola (RR), volunteer

Clover (red), volunteer

Corn, volunteer

Corn (LL), volunteer

Corn (LL/RR), volunteer

Corn (RR), volunteer

Corn (Enlist), volunteer

Cereals, volunteer

Volunteer crops (Listed in alphabetical order)

NC NC NC NC NC NI NI 9 8 <5 8 9 9

NC NC NC NC NC <5 6 <5 <5 <5 6 <5 <5

8-9 7-9 6-8 7-9 7-9 NC <5 <5 <5 NC <5 <5 <5

0 0 4-9 6-9 0 NC <5 <5 <5 NC <5 <5 <5

9 9 9 9 9 NC NC <5 <5 NC <5 <5 <5

9 8 NC NC NC 8

6 6 6 7 8 6

9 9 9 9 9 9

<5 <5 NC NC NC <5

9 9 9 9 9 9

9 9

<5 <5

9 9

NC NC

9 9

Weed Management Guide 2016

Soybeans table 3 & 4

R = Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Tolerant Varieties

GROUP

Get the safest broadleaf control for soybeans. With a unique Group 14 mode of action, Authority is tough on weeds and gentle on your crop for higher yields and cleaner fields. That’s why Authority’s active ingredient, sulfentrazone, is the number one pre-emergent residual broadleaf weed control in US soybean crops.* SOYBEANS

FMCcrop.ca

*Source 2014 Doane Data. For complete information on Authority and all FMC products please contact your local FMC sales representative or visit FMCcrop.ca. Distributed by UAP in Ontario (1-800-265-5444) and Quebec/Maritimes (1-800-361-9369) or visit UAP.ca. FMC and Authority are trademarks of FMC Corporation. © 2015 FMC Corporation. All rights reserved.

cereals Table 1..................22 Weed control ratings for pre-plant burndown treatments in cereals

Table 2.................22 Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in cereals

Weed Management Guide 2016

Table 1. Weed control ratings for pre-plant burndown treatments in cereals

Carrot, wild

Chickweed

Clover, red

Dandelion

Fleabane, Canada

Flower-of-an-hour

Henbit

Horsenettle

9 9 9

Canola, volunteer (RR)

Buckwheat, wild

7 9 9

Broadleaf plantain

Atriplex, spreading

7 8 9

Burdock (2nd year)

Alfalfa, volunteer

8 NI NI

Burcucumber

Azuki bean, volunteer

Witchgrass

Sandbur

Quackgrass

Foxtails

Bluegrass, annual

Tolerant hybrids

Herbicide Treatment

Mode of action

Weed species typically found at time of burndown (Annual, biennial or perennial – listed in alphabetical order)

<5 6 8

6 9 9

0 0 0

7 8 9

9 9 9

7 8 9

7 9 9

9R 9R 9R

9 9 9

81 81 NI

Glyphosate: Emerged weed control ratings at 4 weeks after application Glyphosate (1X rate) Glyphosate (2X rate) Glyphosate (3X rate)

9 9 9

All All All

9 9 9

7 8

Tank-mix partners with glyphosate (1X rate): Weed control ratings at 8 weeks after application – in other words “If I add a herbicide to glyphosate, will it improve 2,4-D Ester 700 Eragon + Merge

9,4 9,14

All All

8 6

6 71

8 9

9 9

<5 5

9 9

<5 <5

8 7

7 7

8 9

<5 <5

NC 8

8 9

<5 8

Herbicides and Co-packs that contain glyphosate: Emerged weed control ratings at 4 weeks after application Enlist Duo (Low Rate) Enlist Duo (High Rate)

4,9 4,9

All All

NI NI

9 9

NI 9

NI NI

NC 9

NI NI

NC 81

8 8

9 9

NI NI

Table 2. Emerged annual grass and broadleaf weed control ratings for post-emergent herbicides in cereals

Fowl meadow grass

Wild oats

Atriplex, spreading

Biennial wormwood

Buckwheat, wild

Bur-cucumber

Carrot, wild

Chamomile, scentless

Chickweed

Cocklebur

Dandelion

NC 8 <5

NC NI NI

NC 7 NI

9 NI NI

NI NI NI

9 NI 7

NI NI NI

5 NI NI

NI NI NI

NI 8 9

NI NI

NI NI <5

7 NI 7

NC NC NC NC 9 NC 9 NC NC NC NC NC NC NC NC NC NC NC NC NC NC 9 NC NC NC NC NC NC NC

NC NC NC NC 8 NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC

NC NC NC NC 9 NC 9 NC NC NC NC NC NC NC NC NC NC NC NC NC NC 9 NC NC NC NC NC NC NC

NI 9 NI NI NC 6 NC 9 <5 NI 9 9 3 9 9 NI 9 NI NI NI NI NC NI 9 9 NI 9 NI 6

NI NI NI NI NC 9 NC NI NI NI NI NI NI NI NI NI NI NI NI NI NI NC NI NI NI NI NI NI 9

<5 <5 <5 6 NC 9 NC 9 9 9 8 9 8 8 8 2 2 2 2 8 8 NC 9 9 9 9 7 7 9

NI NI NI NI NC <5 NC NI NI NI NI NI NI NI NI NI NI NI NI NI NI NC NI NI NI NI NI NI 7

<5 <5 <5 <5 NC <5 NC 7 <5 <5 <5 5 7 7 7 <5 <5 <5 <5 <5 NI NC 7 7 7 <5 <5 <5 8

<5 <5 NI NI NC <5 NC 8 NI NI 6 NI NI <5 <5 <5 <5 NI NI NI 8 NC 8 8 8 5 NI NI NI

<5 <5 <5 <5 NC 9 NC 7 <5 NI <5 7 <5 <5 5 5 5 NI NI NI 8 NC 7 7 7 5 8 NI <5

4 4 NI NI NC 8 NC 6 5 8 5 8 8 8 8 4 4 4 NI NI 8 8 NC 6 6 6 8 9 NI

8 8 8 8 NC 9 NC 7 9 NI NI NI 5 8 7 7 7 7 NI 8 9 NC NI 8 7 NI 9 NI 9

<5 <5 <5 <5 NC NI NC 5 <5 NI 6 8 <5 <5 <5 <5 <5 <5 <5 NI 8 NC NI NI 5 NI 5 NI 5

cleavers

Foxtails

Bluegrass, annual

Centgrass, loose silky

Cereal crop tolerance

Red clover underseeded

Grassy weeds (Annual)

Alfalfa underseeded

Wheat

Rye

Oats

Barley

Herbicide Treatment

Mode of action

Crop Uses

Pre-Emergent Treatments – Emerged weed control ratings at 4-6 weeks after application Eragon + Merge Focus Valtera

14 14,15 14

Yes

Yes Yes Yes1

E G G

NC NI NI

NC 7 NI

Post-Emergent Treatments – Emerged weed control ratings at 4-6 weeks after application 2,4-D Amine 2,4-D Ester 2,4-DB (Embutox, Caliber, Cobutox) 2,4-DB + MCPA Achieve Liquid or Bison Banvel II, Hawkeye or Oracle Bengal or Vigil Boost M Co-pack Buctril M, Badge, Mextrol or Logic M Dyvel Estaprop XT, Dichlorprop DC or Turboprop Infinity Lontrel Lontrel + 2,4-D Lontrel + MCPA MCPA Amine MCPA Ester MCPA Sodium Mecoprop or Compitox Pardner, Bromotril, Brotex or Koril Pixxaro co-pack Puma Advance Refine SG Refine SG + 2,4-D Refine M Co-pack Target, Tracker XP or Sword Trophy Co-pack Tropotox Plus, Clovitox Plus or TopSide Peak + Pardner 22

4 4 4 4,4 1 4 1 2,4 4,5 4 4 27,5 4 4,4 4,4 4 4 4 4 5 4,4,4 1 2 2,4 2,4 4 4,4 4 2,4

Yes1 Yes Yes1 Yes Yes Yes Yes Yes Yes Yes1 Yes Yes1 Yes Yes1 Yes1 Yes Yes1 Yes1 Yes1 Yes1 Yes1 Yes1 Yes1 Yes1 Yes Yes1 Yes Yes1 Yes1 Yes1 Yes1 Yes

Yes Yes Yes Yes

Yes Yes Yes Yes Yes

Yes Yes Yes Yes

Yes Yes Yes

Yes1 Yes Yes

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes1 Yes Yes Yes Yes Yes Yes Yes1 Yes1 Yes1 Yes Yes Yes Yes Yes Yes Yes Yes1 Yes Yes Yes Yes Yes Yes Yes Yes

G G G G G P G G E P G E G G G G G G G E E G E G G P G G E

NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC

Weed Management Guide 2016

Horsetail, field

Lettuce, prickly

Lamb's-quarters

Mustards

Pigweed

Pineappleweed

Ragweed, common

Ragweed, giant

Three-seeded mercury

Violet (pre flower)

Vetch

Waterhemp

CORN | SOYBEANS | Cereals

<5 <5 NI

9 9 9

5 6 9

9R 9R 9R

8 9 9

7 8 9

<5 6 8

9 9 9

Cereals Table 1

1 Top growth burnoff only, regrowth will occur. 2 The addition of Merge at 0.4 l/ac. is required

to achieve this level of control.

Table 2: Cereals

1 Only labelled for use on spring-planted varieties. 2 Top growth control only.

control of the target weeds” 8

61,2 8 8

NI NI

9 9

NI NI

7 8

9 7

6 92

91 61,2

NI NI

9 9

NI NI

6 6

91 91

NI NI

R Populations of this weed exist in Ontario that are resistant

to this treatment and will not be adequately controlled. NI = “No information” available. NC = The weed is “not controlled” by this herbicide treatment.

Fleabane, Canada

Flower-of-an-hour

Ground ivy

Henbit

Hemp nettle

Horsetail

Lady's thumb

Lamb's-quarters

Lettuce, prickly

Mustards

Nightshade

Pigweeds

Ragweed, common

Ragweed, giant

Speedwell species

Shepherd's purse

Sow-thistle

Stinkweed

Thistle, Canada

Three-seeded mercury

Velvetleaf

Vetch

Violet, field

Waterhemp

Broadleaf weeds (All life cycles listed in alphabetical order)

9 NI <5

NI NI NI

6 NI NI

9 NI 7

9 7 9

9 NI NI

9 NI 8

NI NI 9

9 NI 9

9 NI 7

9 NI <5

NI NI NI

9 NI NI

82 NI NI

9 8 NI

NI NI NI

NI NI 7

62 NI NI

9 NI NI

NI 8 8

8 9 NI NI NC 9 NC 6 6 NI 9 9 9 9 9 7 8 NI NI NI 8 NC NI NI 6 NI 8 NI 7

NI NI NI NI NC NI NC NI NI NI NI NI NI NI NI NI NI NI NI NI NI NC NI NI NI NI NI NI NI

7 7 NI NI NC NI NC 8 9 NI 7 NI NI 7 8 8 9 NI NI NI NI NC 6 8 8 9 NI NI NI

<5 <5 NI NI NC <5 NC <5 <5 <5 <5 NI NI NI NI <5 <5 NI NI NI NI NC <5 <5 <5 <5 NI NI NI

<5 <5 <5 <5 NC 7 NC 9 7 9 7 9 NI <5 7 8 8 8 <5 <5 8 NC 9 9 9 8 8 8 9

9 9 NI NI NC NI NC 9 9 NI 9 6 8 9 9 9 9 NI NI NI NI NC NI NI 9 NI 9 NI 9

<5 <5 <5 <5 NC 9 NC 9 9 9 8 9 <5 9 9 9 9 9 9 8 7 NC 9 9 9 9 7 <5 9

9 9 7 9 NC 9 NC 9 9 9 9 9 <5 9 9 9 9 9 9 9 9 NC 9R 9 9 9 9 9 9

9 9 NI NI NC 6 NC 9 8 9 9 8 NI 9 9 9 9 NI NI NI 9 NC 8 9 9 9 8 NI 8

9 9 7 9 NC 6 NC 9 9 9 9 9 <5 9 9 9 9 9 9 7 9 NC 8 9 9 9 9 9 9

7 7 7 7 NC 9 NC 7 9 NI NI 9 <5 7 NI NI NI NI NI 9 NI NC NI 7 NI NI NI NI NI

9 9 9 9 NC 9 NC 9 8 9 9 9 <5 9 9 9 9 9 9 7 9 NC 9R 9 9 9 9 9 9

9 9 8 8 NC 9 NC 9 9 9 9 9 7 9 9 9 9 8 9 9 9 NC 7R 9 9 9 9 9 9

9 9 NI NI NC 8 NC 7 7 NI 9 8 9 9 9 8 8 NI NI NI 9 NC NI NI 7 9 9 NI 5

6 8 NI NI NC 5 NC 9 5 8 9 <5 NI NI NI 9 9 NI <5 NI NI NC 9 9 9 9 NI NI 8

9 9 8 8 NC 6 NC 9 9 9 9 9 NI 9 9 9 9 9 NI 8 9 NC 9 9 9 9 9 9 9

5 5 5 5 NC 8 NC 8 7 8 8 8 9 9 9 7 7 NI NI 6 7 NC 8 8 8 8 8 9 8

9 9 6 6 NC 6 NC 9 9 9 9 9 NI 9 9 9 9 9 7 8 9 NC 9 9 9 9 9 9 9

8 8 NI NI NC 7 NC 7 5 8 8 <5 9 9 9 8 8 NI 7 5 7 NC 7 7 7 8 8 9 5

8 9 NI NI NC 7 NC NI NI NI NI NI NI NI NI 8 8 NI 7 <5 NI NC NI NI NI NI NI NI 8

8 8 8 8 NC 9 NC 8 9 NI NI 9 NI 8 8 8 8 8 NI 9 NI NC 8 9 9 NI NI 9 9

8 8 <5 <5 NC 8 NC 6 5 8 7 5 9 9 9 7 7 NI NI NI 8 NC NI 6 6 8 9 NI NI

5 5 NI NI NC <5 NC 8 NI 7 9 NI NI NI NI 8 8 NI NI NI NI NC 8 8 8 NI NI NI 6

NI NI NI NI NC 8 NC NI 8 NI NI NI NI NI NI NI NI NI NI NI NI NC NI NI NI NI NI NI NI

Weed Management Guide 2016

Stop settling for good. Start this season with the best.

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Always read and follow label directions. Converge® is a registered trademark of Bayer Global. Bayer CropScience Inc. is a member of CropLife Canada. *Based on five trials at three different Ontario locations in 2011. Trials were conducted comparing weed control with pre-emerge herbicides in corn. Trials were funded in part by the Grain Farmers of Ontario. The assistance of OMAFRA through the OMAFRA/University of Guelph Partnership is also acknowledged.

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