Sunflower Weed Control –Addendum to The Guide to Field Crop Protection 2012

Use this chart when choosing herbicides for the sunflower fields in 2012. This table includes important changes

that should be noted, such as Solo is only registered for Clearfield Hybrids. If applied to non-Clearfield hybrids it

will result in sever crop damage. This chart does not contain all the information that should be considered when

making herbicides choices. Always refer to the product label.

NATIONAL SUNFLOWER ASSOCATION OF CANADA

SPECIAL BULLETIN

Timing Weeds

HERBICIDE

Cro

p T

ole

rance

Pre

-seed

Pre

-em

erg

ent

in-C

rop

Barn

yard

Gra

ss

Foxta

il, Gre

en

an

d Y

ello

w

Quackgra

ss

Volu

nte

er B

arle

y

Volu

nte

er w

heat

Volu

nte

er C

ano

la

Wild

Oats

Buckw

he

at, W

ild

Catc

hfly

, Nig

ht-flo

werin

g

Chic

kw

ee

d

Cle

avers

Cockle

bur

Dand

elio

n

Flix

wee

d

Hem

p-n

ettle

Kochia

Lam

b's

-quarte

rs

Mallo

w, R

ound

-lea

ve

d

Musta

rd, W

ild

Pig

wee

d, R

edro

ot

Russia

n T

his

tle

shepherd

's-p

urs

e

Sm

artw

ee

d, A

nnu

al S

pecie

s

Stin

kw

ee

d

This

tle, S

ow

(Pere

nnia

l)

This

tle, C

anad

a

Asesrt/Avert (G2) F X G G

Arrow/Centurion/Select/Shadow (G1) E X E E F E E G

Authority (G14) X X ~ ~ ~ ~

CleanStart (G9,14) X ~6

~ ~7

~

Edge Granular (G3) G X G E S S S G G S S G E E S S S

Eptam 8E (G8) G X G G S F F G G G G

Equinox (G1) X ~1

~ ~ ~

Express SG 2,4

(G2) X4

~ ~

Muster Toss-N-Go (G2) X G G G G F

Poast Ultra (G1) E X E E S E E G

Solo5 (G2) X

5 ~ ~ ~ ~

3 ~

3 ~ S S S

2 ~ ~ ~ ~ ~ ~

Trifluralin (G3) E X G G F F G G G G

X Registered for the corresponding application timing. ~ Registered for control, ratings not yet developed. 1 Registered for control of Green Fox-tail only. 2 May not control Group 2 resistant biotypes. 3 Will not control CLEARFIELD volunteers. 4 For use only on ExpressSun sunflower varie-ties 5 For use only on CLEARFIELD sunflower varieties. 6 Control of all herbicide tolerant varieties (1 to 3 leaf stage for glyphosate tolerant volun-teer canola) 7 Spring seedings only.

ALWAYS REFER TO THE PRODUCT LABEL FOR ALL APPLICATION INFORMATION

NATIONAL SUNFLOWER ASSOCATION OF CANADA

SPECIAL BULLETIN

Barnyard grass Lady’s thumb Lamb’s quarters

Canada thistle Sow thistle Dandelion Biennial Wormwood

Kochia Round-leaved mallow Stinkweed Shepherd’s purse

False Ragweed Wildbuck wheat Greed foxtail Chickweed

Redroot pigweed Cleavers Wild mustard

UofM

Purdue University MAFRI

U. of California

MAFRI