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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