Anthracnose

Overview

Anthracnose stalk rot, instigated by the fungus Colletotrichum graminicola, is a widespread and damaging corn disease. It flourishes in environments with high humidity and temperature, the perfect breeding ground for the fungus.

Impacting the stalk's strength and integrity, Anthracnose stalk rot-infected plants suffer significant yield losses due to premature plant death, poor grain fill, and an increased likelihood of lodging, further complicating harvest.

Moreover, the disease can also indirectly influence corn quality. Infected plants are more susceptible to secondary infections by other pathogens, which can further decrease yield and grain quality.


How to Identify Anthracnose Stalk Rot

Prompt detection of Anthracnose stalk rot is key to deploying effective management strategies. The disease usually presents as small, water-soaked lesions on the lower internodes of the stalk. These lesions eventually grow and merge, forming elongated, darkened areas often blanketed with a black, powdery fungal growth.

Internally, the disease induces a discoloration of the stalk pith, changing it from a healthy white to a dark brown or black, often most visible at the nodes. In severe instances, the pith may entirely rot, leaving only the outer rind intact.

Geographic Reach of Anthracnose Stalk Rot

Geographically, Anthracnose stalk rot is most prevalent in warm, humid regions. In the United States it is particularly widespread in the Corn Belt, but it can manifest anywhere corn is grown.

Timing of Anthracnose Stalk Rot

The disease can strike at any growth stage of corn, but it inflicts the most harm during the mid to late growing season.

How to Manage Anthracnose Stalk Rot

Overall, hybrid product selection and keeping the crop as healthy as possible with a comprehensive crop protection program are the best defenses against anthracnose stalk rot. 

Start by choosing corn hybrids with greater resistance to anthracnose stalk rot. Ensure sufficient crop nutrition with fertilizers like Nourish Vitals™ or Inhabit N™

Fungicides aren't effective against fusarium stalk rot itself, but they can help protect overall plant health. Fungicide applications near tassel timing — or earlier if disease or environmental threats warrant — can help protect stalk integrity.

Managing foliar diseases can help protect stalk integrity and lessen plant stress, which makes the plant more susceptible to the development of stalk rots. Protect stalk integrity and limit stress that favors the development of anthracnose stalk rot by managing foliar diseases with a broad-spectrum fungicide like GCS Azoxyprop or Willowood Teb 3.6SC

Similarly, controlling insects that can wound plant tissue can help reduce the entry of fungal pathogens into the plant. Manage insects with insecticides like Willowood Lambda-Cy 1EC**, Asana XL**, and GCS Bifenthrin 2EC**.

GCS Azoxyprop tote 800x800

Disclaimer

© 2014 - 2024 Farmer's Business Network, Inc. All rights Reserved. The sprout logo, “Farmers Business Network”, “FBN”, “FBN Direct” are trademarks or registered trademarks of Farmer's Business Network, Inc. This content was written by Norm℠, reviewed and edited by Mikaela Tierney.

Asana® is a registered trademark of Valent U.S.A. Corporation.

All other trademarks are the property of their respective owners.

**Asana® XL is a restricted use pesticide.

**Willowood Lambda-Cy 1EC is a restricted use pesticide.

**Bifenthrin 2EC is a restricted use pesticide.

*RESTRICTED USE PESTICIDE Due to acute toxicity. For retail sale to and use by certified applicators only – NOT to be used by uncertified persons working under the supervision of a certified applicator.

This content was generated with the assistance of Norm℠, FBN’s artificial intelligence (AI) Ag Advisor, based on a dataset of information containing general industry best practices and research. The AI model did not use specific external sources to generate this content. Our process involves using AI to aid human subject matter experts with the initial drafting and/or refinement of content.

The information and content provided is believed to be reliable, but its accuracy is not guaranteed. The content is provided for informational purposes only. It is not intended to be a substitute for specific agronomic, business, or professional advice, and should not be relied upon as such. Neither Farmer's Business Network Inc. nor any of its affiliates makes any representations or warranties, express or implied, as to the accuracy or completeness of the statements or any information contained in the material and any liability therefore is expressly disclaimed. If you have any questions or feedback about the content, please feel free to contact us or visit our FAQ (https://www.fbn.com/community/blog/norm-faq).

Every product that labels ANTHRACNOSE as a weed, pest, or disease the product can be applied against is shown below. Click any product for label and more information.
26 GT®26/36® Fungicide3336 Plus™3336® DG Lite®3336® EG3336® F3336® WPA-Zox 25SCA-Zox 50WDGAbound® Flowable FungicideAbsolute® 500 SCAbsolute® MaxxAcadia® ESQAcadia™ 2 SCAcadia™ 2 SCAcadia™ ESQ FungicideAce™ 3.8L STAcropolis FungicideAcropolis™ FungicideActinovate® AGActinovate® AGAdament® 50 WG FungicideAffiance®Affiance™Affirm™ WDGAframe™Aframe™ PlusAftershock®Aliette® WDG FungicideAlterity™ 62.5 WGAlto® 100 SLAmeriCop 40 DFAmistar® TopAndiamo® 230 FungicideAndiamo™ 230 FungicideAndiamo™ AdvanceAppear®Appear® IIAproach®Aproach® PrimaAprovia® FungicideAprovia® Top FungicideAquila™ XLAriston®Arius™ 250Arius™ ADV FungicideArius™ AdvanceArmada® 50 WDGArmada® 50 WDGArmada® 50 WPArysta Propiconazole 41.8 EC FungicideAutilus™Avaris® 2XSAvaris™ FungicideAvelyo® FungicideAviv™Aviv™Axios™ 20 SCAzaka™Azoxy TebAzoxyStar®Azoxystrobin SCAZterknot®AZteroid® FCAZteroid® FC 3.3Azure™ Xtra FungicideBacixBadge® SCBadge® SCBadge® SCBadge® X2Badge® X2Badge® X2Banner MAXX®Banner MAXX® IIBarrierBasic Copper 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DFCompass®Compass™ O 50 WDGConcert®Concert® IIConfine® ExtraConfine™ Extra T&OCop-Kleen™Copper-Count®-NCover XL (Agri Star)Crossover® ProCueva® Fungicide ConcentrateCuprofix® Ultra 40 Disperss®Cuproxat® FLCuproxat® Flowable Copper FungicideCustodia®Cymbol™ AdvanceDaconil Ultrex® Turf Care®Daconil Weatherstik®Daconil® Action™Daconil® WeatherStik®DART® Fungicide ECDelaro® 325 SC FungicideDelaro® CompleteDensicor®Densicor®Detour™ 4 SCDexter® SCDexter™ MaxDexter™ XCELDisarm® 480 SCDisarm® C FungicideDisarm® G FungicideDisarm® MDithane® 75DF Rainshield® Specialty FungicideDithane® F45 Rainshield® FungicideDithane® M45 FungicideDocket® DFDocket® WSDomark® 230 MEDomark® 230 ME FungicideDornic™ 720 FDouble Nickel 55™Double Nickel® LCDovetail®E-Scape ETQ® Turf FungicideEagle® 20EW Specialty FungicideEagle® 40WP Specialty FungicideEcho Dyad ETQ®Echo® 6F ETQ™Echo® 720 Agricultural FungicideEcho® 720 Turf and Ornamental FungicideEcho® 90DF Agricultural FungicideEcho® Ultimate ETQ™Echo® Ultimate Turf and Ornamental FungicideEcho® Zn Agricultural FungicideEclipse ETQ™ Turf FungicideEcoSwing® Botanical FungicideElloraEluvium™EmpireEncartis™ fungicideEndorse® Wettable Powder FungicideEndow™ GEnsign® 720 Flowable FungicideEnsign® 82.5% Turf And OrnamentalEquation™Equation™ SC FungicideEquus® 500 ZNEquus® 720 SSTEquus® 720 SSTEquus® DFEsquire™Evito® 480 SCEvito® T FungicideExteris® Stressgard®Fervent® 475SC FungicideFitness® FungicideFlint® ExtraFlint® FungicideFontelis®Fore® 80WP Rainshield® Specialty FungicideFortix® FungicideFortuna™ 75 WDG FungicideFosphite® FungicideFroghorn™Fungi-Phite® FungicideFungo® FloGCS Azoxy 2SCGCS AzoxypropGCS Tebustrobin SCGem® 500 SCGold Rush®GreenClean® ProGuarda®Headline AMP® fungicideHeadline® fungicideHeadline® SC fungicideHeadway®Headway® GHelena® ProPhyt®Helena® T-Methyl 4.5 AgHelmstar Plus SCHeritage® FungicideHeritage® GHeritage™ ActionHeritage™ TLHonor® Intrinsic™ brand fungicideHonor™ fungicideHowler® EVOHowler® FungicideIncognito® 4.5 FIncognito® 85 WDGIndar® 2F FungicideInitiate® 720 Flowable FungicideInitiate® ZNInsignia® fungicideInsignia® SC Intrinsic® brand fungicideInspire Super®Inspire®Instill™Instrata®Interface™Iprodione 4L AGK-Phite® 7LP Systemic Fungicide BactericideK-Phite® 7LP T/OKalmor®Kenja® 400SC FungicideKentan® DFKocide® 2000Kocide® 2000Kocide® 2000-OKocide® 3000Kocide® 3000Kocide® 3000-OKocide® DFKOP-Hydroxide™KOP-Hydroxide™ 50WKOP™-5 Algaecide/Bactericide/FungicideKoverall® FungicideKoverall® FungicideLaguna®Lalstop G46 WGLaredo® EW FungicideLektivar™ 40SCLexicon® Intrinsic® brand fungicideLifeGard® WGLime Sulfur ULTRALime-Sulfur Solution™Linebacker® WDG Agricultural Fungicide (REI = 12)Lucento™Luna Experience®Luna Sensation®Luna® FlexLuna® PrivilegeMagistrate™ManKocide®Manzate® MaxManzate® Pro-Stick™ (UPI)Marazo™MasterCop®Maxtima® FungicideMazinga™ ADV FungicideMazinga™ ADV FungicideMazolin™Medallion® FungicideMerivon® Xemium® brand fungicideMertect® 340-FMeteor® FungicideMettle® 125 MEMettle® 125 MEMettle® 125 MEMiCrop™ FungicideMiCrop™ FungicideMiller Lime Sulfur SolutionMiller Sulforix®MilStop®MilStop® SPMiramar™ FungicideMiravis® DuoMiravis® NeoMiravis® PrimeMiravis® TopMiricell™Monsoon®Monsoon® TurfMural™NanoCropNevado® 4FNexicor™ Xemium® brand fungicideNordox®Nordox® 30/30 WGNordox® 75 WGNu-Cop 50 WPNu-Cop® 30 HBNu-Cop® 3LNu-Cop® 50DFNu-Cop® HBNu-Cop® XLRNufarm Iprodione SPC FungicideNufarm Propiconazole SPC 14.3 MECNufarm T-Methyl 4.5 F FungicideNufarm T-Methyl 70 WSB FungicideNufarm T-Methyl SPC 4.5F FungicideNufarm T-Methyl SPC 50 WSB FungicideNufarm T-Methyl SPC Granular FungicideNufarm TM + CTN SPC 66.6 WDGNufarm TM + IP SPCObvius® Fungicide Seed TreatmentObvius® Plus Fungicide Seed TreatmentOffset™ 3.6F FungicideOHP 6672™ 4.5 FOHP 6672™ 50 WPOmavo™Omega® 500FOmni® Brand Chlorothalonil 720SCOmni® Brand Propiconazole 41.8% ECOmni® Brand T-Methyl 70 WPOnset™ 3.6L FungicideOranil™ 6LOrbus™ 4 FOrius® 3.6FOrkestra™ Intrinsic® brand fungicideOrondis® Opti (Premix)Orondis™ Opti BOSO™ 5%SC FungicideOverrule®OxiDate® 2.0OxiDate® 5.0OxiDate® Broad Spectrum Bactericide/FungicidePageant® Intrinsic® brand fungicidePegasus® 6LPegasus® DFXPenncozeb® 75DFPenncozeb® 80WPPeriapt™Perissim™Perissim™PeroxySan-CX Broad Spectrum Bactericide/FungicidePERpose Plus™Ph-D®Ph-D®Phoenix Kestrel® MEXPhoenix Pegasus® 6LPhoenix Pegasus™ DFXPhoenix Pegasus™ HPXPhoenix Peregrine®Phoenix Siskin®Phoenix Skylark™Phoenix T-Bird® 4.5LPhyton® 27Phyton® 35Pilato™ SCPompaPPZ 41.8 Select™Praiz® NGPraiz™Preemptor® EQPreemptor™ SC FungicidePrev-AmPrev-Am® UltraPrevia®Previsto®Priaxor® D {Component B}Priaxor® D fungicidePriaxor® Xemium® brand fungicidePrimeraOne® Chlorothalonil 720 SFT FungicidePrimeraOne® Chlorothalonil DFPristine® fungicideProBlad® VerdeProcon-Z™ FungicideProline® 480 SCPropazProPensity® 1.3ME Turf and Ornamental FungicidePropi-Star® ECPropicon ECPropiconazole 1.3 ME T&OPropiconazole 3.6 EC FungicidePropicure 3.6FPropiMax® EC FungicidePropulse®Prosaro® 421 SCProsaro® Pro 400 SCProtect™ DFProtegam® YLDProthioconazole 4L Select™Protocol®Provysol™ fungicideProzio™ BWPProzio™ SCPulse Premix 4L STPVent®Quadris Top®Quadris Top® SBQuadris Top® SBXQuadris® FlowableQuadris® OptiQuadris® XtraQuash® FungicideQuash® SC FungicideQuilt Xcel®Quilt® FungicideRadius™ ESQRally® 40WSP FungicideRampart® FungicideRancona® 3.8 FSRancona® CTSRancona® SummitRancona® SummitRancona® V 100 Pro FSRancona® V 100 Pro FSRaven® FungicideRegalia®Regalia® CGRegalia® Rx BiofungicideRegev®Reliant® Systemic FungicideRendition™Resist 57™Revus Top®Revylok™ FungicideRevytek™ fungicideRex Lime Sulfur SolutionRhapsody®Rhyme® FungicideRhyme™ FungicideRialto™ 720 FRidomil Gold® Bravo® SCRomeoRoper® DFRoper® DF Rainshield™Rovral® 4 Flowable FungicideRubigan® A.S.RustEaseSaniDate® 12.0SaniDate® 12.0 MicroBiocideSatori® FungicideScholar® SC FungicideSecure®Secure® ActionSerenade® ASOSerenade® MAXSerenade® OptiSerenade® OptimumSerifel® BiofungicideShar-Shield PPZSipcam Clearscape® ETQ™ Turf FungicideSipcam Clearscape® Turf and Ornamental FungicideSlant™Slant™ ECSonoma® 20EW AGSonoma® 40WSPSparra™Spectro® 90 WDGSporeQuell™ 15%Stratego®Stratego® YLDStrider™ FungicideStrike® Plus 50 WDGSulforix®Switch® 62.5WGSyllit® 65 WGSyllit® FLT-Bird® 4.5LTalaris™ 4.5 FTalaris™ 50 WSPTalaris™ 70 WSBTanos®Tarian™Tartan®Tartan® StressgardTartan® StressgardTavano™ 5%SC FungicideTazz™ FungicideTebazTebu-Crop 3.6FTebu-Turf 3.6FTebucon® 3.6F FungicideTebuconazole 3.6F T&OTebuStar® 3.6LTebuzol® 3.6FTee-1-Up® WDGTee-Off® 4.5FTekken® Broad Spectrum FungicideTepera® PlusTepera® Plus HDTepera® Plus HDTepera™TerraCyte® ProTetraban®Tetraban® FungicideThiophanate Methyl 85 WDGTide Propiconazole 41.8% EC FungicideTilt®Timorex Act®TM 4.5F Select™Token™ SCToledo®Topaz® FungicideTopguard®TopGuard® EQ FungicideTopguard® FungicideTopsin® 4.5FL FungicideTopsin® M WSB FungicideTopsin® XTR2 FungicideTorque™ FungicideTourney® EZ FungicideTourney® FungicideTraction™ FungicideTrevo®Trevo® DCZTrevo® PTrevo® PackedTrevo® TRZTriathlon® BATrilogy® Fungicide/Miticide/InsecticideTrinity® fungicideTrivapro® FungicideTrivapro™ ATrivapro™ BTrojan™TwinLine® FungicideUnicorn DFUnion™ Fungicide SCVabro™Vacciplant®Vacciplant®Vangard® WGVango™ ESQVango™ ESQ FungicideVango™ WGVantana™Vectorite™ with CR-7 for Bumble Bee VectoringVectorite™ with CR-7 for Honey Bee VectoringVelista™Veltyma® fungicideVeranda® T Water Dispersible GranulesVertisan®Viathon®Viatude™ FungicideVibe™Vibrance® MaxxVibrance® TrioVigilVitaflo®-280Willowood Azoxy 2SCWillowood AzoxyProp XtraWillowood Propicon 3.6ECWillowood Pyrac 2ECWillowood Teb 3.6SCWillowood Tebustrobin SCXiphosin™XuviaZeroTol® 2.0ZeroTol® HCZing!®Ziram® 76DFZiram® XCELZolera™ FX Fungicide