1

SMALL GRAINS DISEASE MANAGEMENT

Fungicide Efficacy for Control of Wheat Diseases

The North Central Regional Committee on Management of Small Grain Diseases (NCERA-184) has developed the following information about fungicide efficacy for the control of certain foliar diseases of wheat for use by the grain produc-tion industry in the United States.The efficacy ratings for each fungicide listed in this table were determined by field testing the materials over multiple years and locations by the members of the committee. Effi-cacy is based on proper application timing to achieve opti-mum effectiveness of the fungicide as determined by labeled instructions and overall level of disease in the field at the time of application. Differences in efficacy among fungicide products were determined by direct comparisons among products in field tests and are based on a single application of the labeled rate as listed in the table.

CPN-3002-W

The table includes most widely marketed products and is not intended to be a list of all labeled products.Many products have specific use restrictions. Restrictions may be present on the amount of active ingredient that can be applied within a period of time or on the number of sequential applications that can occur.Read and follow all use restrictions before applying any fungicide.

2Small Grain Disease Management

Fungicide Efficacy for Control of Wheat DiseasesFu

ngic

ide

Effic

acy

for C

ontr

ol o

f Whe

at D

isea

ses1

1 Effi

cacy

cate

gorie

s: N

L=N

ot L

abel

ed; N

R=N

ot R

ecom

men

ded;

P=P

oor;

F=Fa

ir; G

=Goo

d; V

G=V

ery

Goo

d; E

=Exc

elle

nt; U

=Unk

now

n ef

ficac

y or

insu

ffici

ent d

ata t

o ra

nk p

rodu

ct.

2 App

licat

ion

of p

rodu

cts c

onta

inin

g str

obilu

rin fu

ngic

ides

may

resu

lt in

elev

ated

leve

ls of

the m

ycot

oxin

Deo

xyni

vale

nol (

DO

N) i

n gr

ain

dam

aged

by

head

scab

.3 P

rodu

ct ef

ficac

y m

ay b

e red

uced

in ar

eas w

ith fu

ngal

pop

ulat

ions

that

are r

esist

ant t

o str

obilu

rin fu

ngic

ides

.4 E

ffica

cy m

ay b

e sig

nific

antly

redu

ced

if so

lo st

robi

lurin

pro

duct

s are

appl

ied

afte

r stri

pe ru

st in

fect

ion

has o

ccur

red.

5 Mul

tiple

gen

eric

pro

duct

s con

tain

ing

the s

ame a

ctiv

e ing

redi

ents

also

may

be l

abel

ed in

som

e sta

tes.

6 Pro

duct

s with

mix

ed m

odes

of a

ctio

n ge

nera

lly co

mbi

ne tr

iazo

le an

d str

obilu

rin ac

tive i

ngre

dien

ts. N

exic

or®

, Pria

xor®

, and

Triv

apro

® in

clud

e car

boxa

mid

e act

ive i

ngre

dien

ts.

7 Bas

ed o

n ap

plic

atio

n tim

ing

at th

e beg

inni

ng o

f ant

hesis

(Fee

kes 1

0.5.

1).

Fung

icide

(s)Ra

te/A

(fl. o

z)Po

wder

y M

ildew

Stag

onos

pora

Le

af/G

lum

e Bl

otch

Sept

oria

Le

af

Blot

chTa

n Spo

tSt

ripe

Rust

Leaf

Rus

tSt

em

Rust

Head

Sc

ab2

Harv

est

Restr

ictio

nCla

ssAc

tive

Ingr

edien

tPr

oduc

t

Stro

bilur

inspic

oxys

trobin

22.5%

Apro

ach S

C®6.0

-12.0

GVG

VG3

VGE4

VGVG

NLFe

ekes

10.5

pyra

clostr

obin

23.6%

Head

line S

C®6.0

-9.0

GVG

VG3

EE4

EG

NLFe

ekes

10.5

Triaz

oles

met

cona

zole

8.6%

Cara

mba

0.75

SL®

10.0-

17.0

VGVG

UVG

EE

EG

30 da

ys

prop

icona

zole

41.8%

Tilt 3

.6EC®

54.0

VGVG

VGVG

VGVG

VGP

Feek

es

10.5.

4

prot

hioco

nazo

le 41

%Pr

oline

480S

C®5.0

-5.7

UVG

VGVG

VGVG

VGG

30 da

ys

prot

hioco

nazo

le19%

tebu

cona

zole

19%

Pros

aro 4

21SC

®6.5

-8.2

GVG

VGVG

EE

EG

30 da

ys

tebu

cona

zole

38.7%

Folic

ur 3.

6F®5

4.0NL

NLNL

NLE

EE

F30

days

Mixe

d mod

es

of ac

tion6

benz

ovind

iflup

yr 2.

9%pr

opico

nazo

le 11

.9%

azox

ystro

bin 10

.5%Tri

vapr

o SE®

8.0VG

VGVG

VGE

EVG

NLFe

ekes

10

.5.4

14 da

ys

cypr

ocon

azole

7.17

%pic

oxys

trobin

17.94

%Ap

roac

h Prim

a SC®

3.4-6

.8VG

VGVG

VGE

VGU

NR45

days

fluap

yroxa

d 2.8%

pyra

clostr

obin

18.7%

prop

icona

zole

11.7%

Nexic

or EC

®7.0

-13.0

GVG

VGE

EE

VGNL

Feek

es 10

.5

fluox

astro

bin 14

.8%flu

triafo

l 19.3

%Pr

eem

ptor

SC®

4.0-6

.0U

UVG

VGE

VGU

NLFe

ekes

10.5

and 4

0 day

s

fluxa

pyro

xad 1

4.3%

pyra

clostr

obin

28.6%

Priax

or®

4.0-8

.0G

VGVG

EVG

VGG

NLFe

ekes

10.5

prop

icona

zole

11.7%

az

oxys

trobin

13.5%

Quilt

Xcel

2.2SE

®510

.5-14

.0VG

VGVG

VGE

EVG

NLFe

ekes

10

.5.4

prot

hioco

nazo

le 10

.8%tri

floxy

strob

in 32

.3%St

rate

go YL

D®4.0

GVG

VGVG

VGVG

VGNL

Feek

es 10

.535

days

prot

hioco

nazo

le 16

.0%tri

floxy

strob

in 13

.7%De

laro 3

25SC

®8.0

GVG

VGVG

VGVG

VGNL

Feek

es 10

.5 35

days

pydif

lumet

ofen

13.7%

pr

opico

nazo

le 11

.4%M

iravis

Ace S

E13

.7VG

VGVG

VGVG

VGVG

G7Fe

ekes

10

.5.4

tebu

cona

zole

22.6%

triflo

xystr

obin

22.6%

Abso

lute M

axx S

C®5.0

GVG

VGVG

VGE

VGNL

35 da

ys

3Small Grain Disease Management

Fungicide Efficacy for Control of Wheat Diseases

June 2019

Find Out MoreThe Crop Protection Network (CPN) is a multi-state and international collaboration of university and provincial extension specialists, and public and private professionals who provide unbiased, research-based information to farmers and agricultural personnel. Our goal is to communicate relevant information that will help professionals identify and manage field crop diseases.Find more resources at CropProtectionNetwork.org.

This publication was developed and published by Erick DeWolf (Kansas State University) and members of the NCERA-184.

The information in this publication is only a guide, and the authors assume no liability for practices implemented based on this information. Reference to products in this publication is not intended to be an endorsement to the exclusion of others that may be similar. Individuals

using such products assume responsibility for their use in accordance with current directions of the manufacturer.

The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs,

reprisal, or because all or a part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact

USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity

provider and employer.

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