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Monitor and Acetochlor – technical fit for production systems

Dr. Wolfgang Voegler, Prague June, 2011

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MONITOR® registration & productadvantagesProduct characterization and registration

Active ingredient: Sulfosulfuron – ALS inhibitor (HRAC classification group B herbicide)Registered for the spring application in wheat; triticale, 

in some countries even in potatoes & tomatos

Registered use rates: 10…20 g ai/ha (12,5…25 g FP/ha) up to cereal growth stage BBCH 32 (BBCH 37)

Apera: 12,5 g/haBrome, Couch, volunteer barley & broadleaf weeds: 25 g/haAddition of non‐ionic surfactant is recommended

Product advantagesBroad grass as well as broadleaf weed efficacy (Apera, Brome, Couch, Galium….)Very good crop selectivityFlexible use in combination with herbicides, fungicides, growth regulators, liquid fertilizersPrefered herbicide to solve unmet needs of Conservation Tillage systems

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EMEAEfficacy spectum – grass as well asbroadleaf weed efficacy

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21 25 29 30

Stadium Weizen / Triticale (BBCH)

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Monitor use recommendations

Target weeds:BromeCouchVolunteer barleyGalium+/‐ broadleafweeds

MONITOR® 25 g/ha + adjuvant (ex: MonFast™ 0,2%)

(+ Herbizide partner eventually + CCC +/‐ Fungizide, NO AHL )

MONITOR® 12,5 g/ha + MonFast™ 0,2%

(+ Herbizide partner;  NO AHL)

MONITOR® 12,5 g/ha + MonFast™ 0,2%

(+/‐ CCC + Fungizide, NO AHL)

Splitting

Solo application

Target weeds:Apera

(+ broadleaf weeds)

MONITOR® 10 ‐ 12,5 g/ha

(plus Partner without Apera efficacy, +/‐MonFast™ 0,2 % or AHL )

MONITOR® 8 ‐ 10 g/ha

(plus Partner with Apera efficacy, +/‐MonFast™ 0,2 % or AHL )

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MONITOR® is suppressing (controlling) couch (AGRRE) in wheatand triticaleUse rate = 25 g/ha plus MonFast™Splitting shows best efficacy, timeframe between applications ~ 2 weeks

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Monitor against Couch

0

25

50

75

100

Wirkungsg

rad [

%]

25g BBCH 21-29+0,2% MonFast

25g BBCH 30-32+0,2% MonFast

2*12,5g +0,2%MonFast BBCH 21-29 & BBCH 30-32

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The perfect combination for Couch control:Monitor in spring, Roundup® pre‐harvest or on stubble

MONITOR® is suppressing Couch in crop, safes the yield , 

the yield advantage pays for more thanthe Roundup treatment = Rounduptreatment is „Free Of Charge“Significant advantage: as couch still hasgreen leafs below canopy Roundup canbe used on stubbles right after harvest

0 20 40 60 80 100

Monitor 25 g/ha / Roundup 1080 g/ha stubble

Monitor 25 g/ha / Roundup 1080 g/ha pre-harvest

Monitor 25 g/ha

Long term efficacy AGGRE [%]

Source: Monsanto inhouse trials

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Relation Brome infestation winter wheat yield(University Long Ashton, 1998‐99)

0

1

2

3

4

5

6

7

8

9

10

0 50 100 150 200

Plants/ m²

Yieldt/ha

Treshhold Brome< 1 Plants/m²

Yield decrease @

5 plants/m2 ~ 1t

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Monitor vs. competitors, efficacy againstBromus sterilis (BROST)Brome infestation untreated: 58 ears/m2  , assessment 66 DAT 

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0 20 40 60 80 100

Monitor 12g 

Monitor 25g 

VM 1, 130g

VM 1, 270g

Monitor 12,5+12,5

VM 1, 135+135g

VM 2, 150g

VM 2, 500g

VM 3, 0,9l

BROST, Rispen/m2

trial 2009695C06

c

c

ef

def

cde

f

f

b

ef

atreatments

All products were applied according to the registration,Surfactants were used as recommended by the companies

Splitting shows best efficacy

BROST ears/m2

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Monitor against volunteer barley

Less foreign matter in wheat, safes cost for drying, very important for seed production

Best product against volunteer barley in wheat/triticale

Splitting 2*12,5g plus MonFast™ @ 0,2% (BBCH 21 and BBCH 29…32) delivers best results

Untreated

Monitor+MonFast

©20

01 Böcker, BSL Gerldern 

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EMEANot all complaints are confirmedresistance cases

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Not all complaints are confirmedresistance cases

Unfavarable application conditionsReduced rates, missing adjuvants,mixture partner antagonism…….

situation at seedsamplingpoor APERA control only in the first sprayinglane

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EMEAApera resistance – joint project with Uni Hohenheim, Bayer, Du Pont & MTC

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Sample collection across Europe

254 Apera samples testedout of which:168 showing resistance againstFlupyrsulfuron, 163 against Sulfosulfuron ,115 against Meso‐/Iodosulf.,6 against Fenoxaprop‐ethyl

Problem awarness is givenPublications to force GAPInternal as well as external trainings

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EMEAInhouse Apera resistance tests to check thesituation

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Example pro‐active grass weedmanagement

Oillseed Rape Winter Wheat Winter Barley

+

‐ FOP´s / DIM´s(Propaquizafop, Quizalofop,Cycloxydim…)

FOP´s / DIM´s(Clodinafop)

FOP´s / DIM´s(Pinoxaden, Fenoxaprop)

FOP´s / DIM´s(Propaquizafop, Fluazifop, Quizalofop, Cycloxydim)

Cell growth inhibitors(Propycamid)

Sulfonylureas(Sulfosulfuron, Iodosulf. Thifensulf., Propoxycarbazon, Pyroxulam…)Cell growth inhibitors(Pendimethalin, DFF)

„Bleacher“ (Flurtamone) Inhib.cell division (Flufenacet) 

Ureas (IPU, Chlortoluron) 

FOP´s / DIM´s (Pinoxaden) Fenoxaprop

HRAC‐Group

A A A

F

K

C

AK

B

K

A

G

Additional safety& Reduction weedpressure

++ G

• Stubble application• Control Brome, blackgrass, volunteer cereals

• Pre‐Harvest application• control of tough weeds

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Acetochlor

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EMEAAcetochlor

Chloroacetamide – inhibition of celldivision (K3)

Dimethenamid‐P, S‐Metolachlor, Pethoxamid,…..

Second most important herbicide worldwideRegistered in corn, soya, sunflower, cotton (Greece)Registration: F, I, Sp, E.‐Europe (Pl,CZ, SK, HU, RO, BU, Ukr…)Acetochlor, is being reviewed under Directive 91/414/EEC. Feedback  Annex 1 inclusion is expected until end of 2011. 

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www.hracglobal.com

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EMEAAcetochlor: benefits of pre‐emergence weed control 

“Start clean, stay clean” conceptprotection of the crop against weed competition from the very early stages

Trend to earlier sowing means plants grow more slowly in the early stages

Pre‐em herbicide limits early weed competitionAcetochlor facilitates the benefits of earlier sowing: more water efficiency, and increased yield – key elements for higher sustainability in corn production.Key to integrated weed management

Foundation of a weed control programmeSequences/mixtures with other pre‐em and post‐em herbicides

Weed resistance management: no resistant weeds in Europe known

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EMEAMain herbicides used in corn pre‐or early post‐emergence of corn

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Active Company

Examples of commercial product registered in Chemical Family (HRAC group) France Germany Spain Italy

Acetochlor Monsanto Dow Agro Sciences

HARNESS TROPHEE

No HARNESS TROPHY

BOLERO TROPHY

Chloroacetamide (K3) S-metolachlor Syngenta DUAL GOLD DUAL GOLD DUAL GOLD

DUAL GOLD

Dimethenamid-P BASF SPECTRUM SPECTRUM No SPECTRUM Pethoxamid Stahler SUCCESSOR SUCCESSOR SUCCESSOR

Flufenacet Bayer

DIPLOME (mixed with metosulam)

CADOU TERANO

(mixed with metosulam)

No CADOU DIPLOME (mixed with metosulam)

Oxyacetamide (K3)

Pendimethalin BASF PROWL STOMP PROWL STOMP Dinitroanilines (K1)

Aclonifen Bayer LAGON (mixed

with IFT) BANDUR LAGON

(mixed with IFT)

No Diphenylether (F3)

Isoxaflutole (IFT) Bayer MERLIN MERLIN MERLIN MERLIN Isoxazoles (F2)

Mesotrione Syngenta No No No LUMAX

(with S-metolachlor)

Triketone (F2)

Terbuthylazine (1) Syngenta

No CLICK And ready-

mixes

CUNA And

ready-mixes

CLICK And ready-

mixes Triazines (C1)

Metosulam (1) Bayer No TACCO No Yes Triazolopyrimidines (B)

(1) : Voluntarily withdrawn from EU review process. Application re-submitted for Annex I inclusion (Regulation 33/2008), decision pending

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Bayer Code Latin Name acetochlor2000 g ai/ha

S-metolachlor1920 g ai/ha

dimethenamide-P1008 g ai/ha

ECHCG Echinochloa crus-galli 8 8 7

DIGSS Digitaria 8 8 7DIGSA Digitaria sanguinalis 8 8 7SETSS Setaria 8 8 7SETVE Setaria verticillata 8 8 7SETVI Setaria viridis 8 8 7AMASS Amaranthus 8 3 6

AMARE Amaranthus retroflexus 8 3 6

CHESS Chenopodium 5 2 5CHEAL Chenopodium album 6 2 5

MERAN Mercurialis annua 2 1 1

POLAV Polygonum aviculare 3 1 3POLCO Polygonum convolvulus 3 1 2POLPE Polygonum persicaria 4 2 4SOLNI Solanum nigrum 7 1 7

Acetochlor has the widest spectrum of chloroacetamide herbicides*

Scale Equivalent in % Control

9 100%8 95%7 90%

6 - 5 70 - 804 50%

3 - 2 20 - 30 %1 10%

* Arvalis (2010)

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EMEAAcetochlor – efficacy comparison toother pre‐emergence herbicides in corn

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Bayer Code Latin NameTriazine500-1000 g ai/ha

acetochlor2000 g ai/ha

S-metolachlor1920 g ai/ha

Dimethena-mid-P

1008 g ai/ha

isoxaflutole100 g ai/ha

isoxaflutole 75 g ai/ha

+ aclonifen 500 g ai/ha

pendimethaline1000 g ai/ha

metosulam 25 g ai/ha

+ flufenacet 600 g ai/ha

ECHCG Echinochloa crus-galli 4 8 8 7 6 7 7 7

DIGSS Digitaria 1 8 8 7 6 7 7 3

DIGSA Digitaria sanguinalis 1 8 8 7 6 7 7 3

SETSS Setaria 4 8 8 7 6 7 7 3

SETVE Setaria verticillata 4 8 8 7 6 7 7 3

SETVI Setaria viridis 4 8 8 7 6 7 7 3

AMASS Amaranthus 3 8 3 6 7 8 7 3

AMARE Amaranthus retroflexus 3 8 3 6 7 8 7 3

CHESS Chenopodium 3 5 2 5 7 8 7 3

CHEAL Chenopodium album 3 6 2 5 7 8 7 3

MERAN Mercurialis annua 7 2 1 1 4 5 4 5

POLAV Polygonum aviculare 7 3 1 3 1 2 7 1

POLCO Polygonum convolvulus 7 3 1 2 1 2 4 1

POLPE Polygonum persicaria 3 4 2 4 8 8 7 3

SOLNI Solanum nigrum 3 7 1 7 7 8 8 7

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presentation titlePage 21

Comparison trials – long term efficacyFrance, 2002, average of 8 trials

30

40

50

60

70

80

90

2016 1440 1830 g/ha

New Guardian dimethenamid-P S-metolachlor

4 leaf8 leafFlowering

% efficacy

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EMEAApplication scheme

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3 6 8 corn leaf stage

1. Acetochlor pre‐emergence or very early post

1. Apply Acetochlor at the registered use rate (2000 g ai/ha) rate before emergence of or very early post

2.Sequential application of another ai if necessary

2. Control later emerging weeds with another herbicide if necessary

weed sensitive period

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EMEAAcetochlor: more advantages 

Performance under dry conditionsAcetochlor is rated among the best pre‐em herbicides in dry conditions (ARVALIS*)

Weed resistance managementLimited resistance despite widespread use around the world since the 1970’ssome weeds cannot be effectively controlled by other pre‐emergence herbicides, particularly sulfonyl ureasManagement of resistance in grasses

Flexible dose rateStandard rate – season long weed controlReduced rate – sequential/tank mix with pre or post em herbicides

Crop selectivityExcellent selectivity in maize (safener)

all types of maize : grain and silage, sweet maize, and inbredsNo “carry‐over” = no restriction on subsequent cropsRegistered in cotton in Greece

* http://www.arvalisinstitutduvegetal.fr/en/ – See Figure 5

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EMEAAcetochlor makes the difference!

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Untreated

Treated

Tata, August 2004

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Many thanks

Wolfgang.voegler@monsanto.com