Call (844) 200-FARM
Farmers Business Network's main logo
ShopMarketAnalyzeCommunityDealsAbout
Sign InJoin for Free

Bean Leaf Beetle

Overview

The Bean Leaf Beetle (Cerotoma trifurcata) is a significant pest that affects various crops across the United States and Canada, particularly soybeans and other legumes. These beetles are small, typically 1/4 inch long, and can be identified by their yellow, red, or orange bodies with distinct black spots or stripes. They cause damage in two primary ways: by feeding on the leaves, which results in defoliation, and by feeding on the pods, which can lead to direct yield loss and increased susceptibility to diseases.

In soybeans, Bean Leaf Beetles can cause substantial economic losses by reducing photosynthetic capacity and directly damaging the pods, leading to lower seed quality and quantity. The beetles can also transmit bean pod mottle virus, further impacting crop health and productivity.

Photo Credit: Frank Peairs, Colorado State University, Bugwood.org

bean leaf beetle

How to Identify Bean Leaf Beetle

Farmers can identify Bean Leaf Beetles (Cerotoma trifurcata) by observing several specific and detailed characteristics:

Appearance:

  • Size: Bean Leaf Beetles are small, typically about 1/4 inch (6 mm) long.

  • Color: They can vary in color, ranging from yellow to red or orange.

  • Markings: Most Bean Leaf Beetles have distinct black spots or stripes on their wing covers (elytra). Some may have a solid color without spots.

  • Triangle Mark: A key identifying feature is a small, black triangle located behind the head on the beetle's thorax.

Life Stages:

  • Eggs: The eggs are laid in the soil near the base of host plants. They are small, oval, and yellowish.

  • Larvae: The larvae are white with a brown head and can be found in the soil feeding on plant roots.

  • Pupae: The pupae are also found in the soil and are white to cream-colored.

Damage:

  • Leaf Feeding: Adult beetles feed on the leaves, creating small, round holes. This defoliation can reduce the plant's photosynthetic capacity.

  • Pod Feeding: They also feed on pods, causing direct damage that can lead to yield loss and increased susceptibility to diseases.

  • Virus Transmission: Bean Leaf Beetles can transmit bean pod mottle virus, further impacting crop health and productivity.

Monitoring:

  • Scouting: Regular field scouting is essential. Look for beetles on the undersides of leaves and check for feeding damage.

  • Traps: Yellow sticky traps can be used to monitor adult beetle populations.

Photo Credit: Ward Upham, Kansas State University, Bugwood.org

Ward Upham, Kansas State University, Bugwood.org

Geographic Impact of Bean Leaf Beetle

The Bean Leaf Beetle (Cerotoma trifurcata) has a significant geographic impact across various regions in the United States and Canada, particularly affecting soybeans and other legumes. This pest is prevalent in the Midwest, where soybean production is extensive, but it can also be found in other agricultural regions.

Bean Leaf Beetle in soybeans

Timing of Bean Leaf Beetle Impact

Bean Leaf Beetles typically emerge in the spring when temperatures begin to warm up, usually around late April to early May, depending on the region. They can have multiple generations per year, with the first generation causing the most significant impact on fields. The beetles feed on soybean leaves and pods throughout the growing season, leading to defoliation and direct damage to the pods, which can result in yield loss and increased susceptibility to diseases such as bean pod mottle virus.

Bean Leaf Beetle in soybean

How to Manage Bean Leaf Beetles

Farmers can manage Bean Leaf Beetles in their fields using specific insecticides. Two effective products are Willowood Lambda-Cy 1EC and Willowood Imidacloprid 4SC.

  • Willowood Lambda-Cy 1EC: This insecticide contains lambda-cyhalothrin and is labeled for use on soybeans and other legumes to control Bean Leaf Beetles. The typical application rate for soybeans is 2.56 oz/acre, with a range of 1.92-3.84 oz/acre.

  • Willowood Imidacloprid 4SC: This insecticide contains imidacloprid and is also labeled for use on soybeans and other legumes to control Bean Leaf Beetles. The typical application rate for soybeans is 1.5 oz/acre.

These products are available from FBN and can help manage Bean Leaf Beetle populations when used as part of an integrated pest management strategy.

Every product that labels BEAN LEAF BEETLE as a weed, pest, or disease the product can be applied against is shown below. Click any product for label and more information.
Acceleron® I-425 Insecticide Seed TreatmentAcceleron® IX-409Acceleron® IX-409 Insecticide Seed TreatmentAcenthrin™Acephate 90 PrillAcephate 90 Prill Select™Acephate 90 WDGAcephate 90 WSPAcephate 97 WDGAcephate 97UP®Acronyx™ 2 FlowableAcronyx™ 4 FAdage™Adage™ STAdmire® ProAdvise® FourAdvise® FourAlias® 4FAmbush® 25WAmbush® InsecticideAnarchy 30 SGAnarchy 70 WPAnnihilate™ LVAnnihilate™ LV InsecticideAnnihilate™ SPAnnihilate™ SP InsecticideAnniston 70 WP InsecticideArctic® 3.2 ECArgyle™ ODArVida® 30 SG InsecticideArVida® 70 WP InsecticideAsana® XLAssail® 30 SG InsecticideAssail® 30SC InsecticideAssail® 70WP InsecticideAthena™ Insecticide/MiticideAttendant® 480 FSAttendant® 600 FSAvenger™ Bold S3™Avenger™ S3™Avicta® Complete Beans 500Axcess™ Insecticide Seed TreatmentAzomar™Batallion™ 10 WSPBatallion™ 2 ECBatallion™ LFCBaythroid® XLBelay® InsecticideBesiege® InsecticideBi-Dash 2EBifen 2 AG GoldBifen 25% ECBifender® FC InsecticideBifenthrin 2EC InsecticideBifenture® 10DFBifenture® ECBolton™BotaniGard® 22WPBotaniGard® 22WPBotaniGard® ESBotaniGard® ESBotaniGard® MaxxBoteGHA® ESBracket® 90 WDGBracket® 97Bracket® 97 (Soluble Insecticide)Bracket® 97 WDGBrigade® 2EC Insecticide/MiticideBrigade® WSB InsecticideBrigadier® InsecticideButeo® startCapture® 2EC-CALCapture® LFR®Carbaryl 4LCarbaryl 4LCavalry™ IIChlorpyrifos 4E AGChlorpyrifos 4E-AGClariva® Elite BeansCobalt® AdvancedCobalt® InsecticideConsero®Consero® (Gamma-cyhalothrin)Cormoran®Cortes™ Maxx InsecticideCouraze® 4CrossoverCrossover® ProCruiser® 5FSCruiserMaxx®CruiserMaxx® AdvancedCruiserMaxx® APXCruiserMaxx® APX UncoloredCruiserMaxx® EZCruiserMaxx® PlusCruiserMaxx® Vibrance®CruiserMaxx® Vibrance® PulsesCrusader 2MECrusader® 1ECCygon™ LVDebug® ONDebug® ONDebug® OptimoDebug® OptimoDebug® TresDebug® TresDebug® TurboDebug® TurboDeclare® InsecticideDeclare® InsecticideDelta Gold®Dimate 4EDimethoate 2.67Dimethoate 2.67 ECDimethoate 4 EDimethoate 400Dimethoate 400 ECDimethoate 4ECDimethoate LV-4Discipline® 2ECDoubleTake™Dyna-Shield Conquest™Dyna-Shield® Imidacloprid 5Elevest™Elliptica™Endigo® ZCEndigo® ZCXEnhance® AWEquity® VIPEquity™Ethos® XB Insecticide/FungicideExirel® Insect Control (With Cyazypyr®)Fanfare® 2ECFanfare® ECFanfare® ESFastac® CS insecticideFastac™ EC insecticideFirestone™Fortenza®Frenzy AttackFrenzy VelozGaucho® 600 FlowableGaucho® Opti Soybean Seed TreatmentGCS Bifenthrin 2ECGCS Bifenthrin LFCGladiator® Insecticide/MiticideGovern® 4EGrandevo® CGGrandevo® WDGGrizzly® TooGrizzly® Z InsecticideHatchet® InsecticideHero® EWHero® InsecticideHost ECIMAX PlusINOVATE™ Seed ProtectantINOVATE™ System Kit (2 Pieces)INTEGO™ SUITE SoybeansINTEGO™ SUITE SystemIntruder® Max 70WPJustice®Kaiso® 24 WGKarate® InsecticideKarate® with Zeon™ TechnologyKendo® 22.8 CSKendo™ InsecticideKilter®Kradan™L - C InsecticideLambda TLambda-Cy AGLambda-Cy™ EC Insecticide-RUPLambdafos™ InsecticideLamcap® IILamcap™Lamdec™ InsecticideLancer® 2ECLancer® FCLannate® LVLannate® LV InsecticideLannate® SPLannate® SPLannate® SPLanveer LV™Latitude®Legend™ 5L STLegumeStar™ Select STLeverage® 360Livid® 90 PrillLivid® 97 PrillLorsban® 75 WGLorsban® Advanced InsecticideLorsban®-4E InsecticideLumiderm®Lumisure®Lunge™ InsecticideMacho® 2.0 FLMacho® 4.0 FlowableMacho® 480 STMacho® 600 STMalathion 5Match-Up™ InsecticideMidash 2SC Ag InsecticideMidash Forte InsecticideMinecto® ProMontana® 4FMustang® InsecticideMustang® MaxxMycotrol® ESOMycotrol® ESOMycotrol® WPOMycotrol® WPONipsIt INSIDE® InsecticideNitro Shield®Nitro Shield® IVNudrin® LVNudrin® SPNufarm Lambda-Cyhalothrin 1EC InsecticideNufos® 4E (RUP)Nuprid® 2SC Soil/Foliar InsecticideNuprid® 4F Max InsecticideOmni® Brand Imidacloprid 2F Flowable InsecticideOrthene® 97Paradigm®Paradigm® VCPerm-UP® 25DFPerm-UP® 3.2 ECPermaStar™ AG InsecticidePermethrinPermethrin 3.2 AGPermethrin 3.2 ECPermethrin 3.2 EC (70506-9-5905)Poncho® 600 Seed TreatmentPoncho® VOTiVO®Poncho® Votivo® Precise Seed TreatmentPoncho® Votivo® Seed TreatmentPoncho® XC Seed TreatmentPounce® 25WPPrey® 1.6Proaxis® InsecticideProaxis® InsecticideProaxis™Province® IIProvince™Provoke™Punisher™Ravage®Renestra™ InsecticideResonate™ 480 STResonate™ 600 STRespect® EC insecticideRespect® insecticideReveal®Reveal® CAReveal® Endurx™Revize® Imida STRidgeback™Rimon® 0.83ECRimon® 0.83ECS-FenvaloStarSedaire™ ECSeed Shield® BeansSeed Shield® SoybeanSeeker™ Insecticide with Isoclast™ ActiveSeguroSenator® 600 FSSerpent™ 1 ECSevin® 4FSevin® XLR PlusSharda Imidacloprid 5SCSherpa® InsecticideSilencer®Silencer® VXN™Skyraider®SlugbugSniper®Sniper® Helios®Sniper® LFR®SoyStar™ Elite STSoyStar™ Premier STSoyStar™ Select STSoyStar™ Supreme STSpirato® IMTm 348 FSStallion® BrandSTartUP™ IMIDA Seed TreatmentSteed® InsecticideSteward® ECSteward® ECSultrus™Surround® CF Crop ProtectantSurround® WP Crop ProtectantSwagger®Tailgunner™Tempest™ Dual-Action InsecticideTenkoz® Acephate 97Tenkoz® Permethrin 3.2 ECTepera® PlusTepera® Plus HDTepera® Plus HDTide Acephate 90 WDGTide Imidacloprid 2FTide Imidacloprid 4FTombstone™Tombstone™ Helios®Triple Crown™ InsecticideTundra® EC (1381-196)Tundra® SupremeUpShot™ Soybean Seed TreatmentViloprid™ FC 1.7Voliam Xpress®Voltage Endurx®Vulcan®Warden® CXWarden® CX IIWarhawk®Warhawk® ClearForm®Warrior II with Zeon Technology®Whirlwind®Willowood Bifenthrin 2ECWillowood Imidacloprid 4SCWillowood Imidacloprid 4STWillowood Lambda 1ECWillowood Lambda-Cy 1ECWrangler® InsecticideYuma® 4EZyrate®

Connect With Us

Download from the Google Play storeDownload from the Apple App store
FBN's Facebook PageFBN's Instagram PageFBN's Twitter PageFBN's Youtube PageFBN's LinkedIn Page
(844) 200-FARM
info@farmersbusinessnetwork.com

Copyright © 2015 - 2025 Farmer's Business Network Canada, Inc. All rights reserved. The sprout logo, "Farmers Business Network," "FBN,", "Farmers First", "FBN Direct," "F2F Genetics Network", "Pro Ag", and "Professional Ag Distributors" are trademarks or registered trademarks of Farmer's Business Network, Inc. or its affiliates. All other trademarks are the property of their respective owners. 

FBN Direct products and services and other products distributed by FBN Direct are offered by Farmer's Business Network Canada, Inc. and are available only in provinces where Farmer's Business Network Canada, Inc. is licensed and where those products are registered for sale or use, if applicable. Not available in Quebec. Nothing contained on this page, including the prices listed should be construed as an offer for sale, or a sale of products. All products and prices are subject to change at any time and without notice. Terms and conditions apply.

Any product recommendations or preselected bundles are for informational purposes only and should not be used as a replacement for consulting the applicable product label or independently determining the appropriate product offerings and quantities for your operation.

Commodity trading involves substantial risk of loss and may not be suitable for everyone. FBN Crop Marketing Canada Inc. does not guarantee any specific benefits or value from participating in FBN Crop Marketing Advisory; results will vary. Past performance is not necessarily indicative of future results.

** Store credits will be issued to customer accounts weekly. Upon issue, store credits are available to be used immediately and will automatically be applied to the members' next transaction. Store credits have no cash value. Store credits expire 6 months after issuance and must be used on a purchase to be shipped no later than 6 months after issuance. Limit one store credit issued for the same program or promotion per week unless otherwise specified. Terms & conditions apply.

Financing provided by our underwriting and finance partners. By applying for credit, you consent to Farmer’s Business Network Canada, Inc. providing information you provide on an application form to our financing partners or their designated third party service providers. Not all applicants will qualify.

To qualify for a financing offer, a borrower must be a member of Farmer’s Business Network, Inc., complete a credit application, be approved by FBN or our lending partners, and complete all loan documentation. Where applicable, qualified farmers must have a current tax exemption form on file with FBN. Farmers may apply for and accept the terms of financing offered by either Farm Credit Canada (FCC) or Scotiabank’s Yield More Financing™ Program. Input financing is available to FBN members from Farm Credit Canada (FCC) and Scotiabank’s Yield More Financing™ Program in the following provinces: Alberta, British Columbia, Manitoba, Ontario, and Saskatchewan. FBN reserves the right to change the terms, effective dates, and to cease any promotions stated herein, with or without notice at any time.

Qualified farmers are eligible to receive a promotional interest rate of 0% to finance purchases of input products made through FBN Direct between October 1, 2023 - December 8, 2023 and financed by Farm Credit Canada (FCC) or Scotiabank’s Yield More Financing™ Program. Qualifying input products include crop protection, adjuvant, crop nutrition, or seed. For Farm Credit Canada (FCC) loans, the 0% promotional interest rate will be offered until May 31, 2024 at which time the loan balance will revert to Prime +2.95% until the loan’s maturity date, which is March 15, 2025. For Scotiabank’s Yield More Financing™ Program loans, the 0% promotional rate will be offered until May 31, 2024 at which time the loans will convert to prime interest rate until September 20, 2024. On October 1, 2024, credit lines above $200,000 will convert to prime +1.95% until the loan’s maturity date, February 29, 2025. On October 1, 2024, credit lines below $200,000 will convert to prime +2.95% until the loan’s maturity date, February 29, 2025.

Qualified farmers are eligible to receive a fixed prime interest rate until September 30, 2024 to finance purchases of input products made through FBN Direct between December 9, 2023 - August 31, 2024 and financed by Farm Credit Canada (FCC) or Scotiabank’s Yield More Financing™ Program. Qualifying input products include crop protection, adjuvant, crop nutrition, or seed. For Farm Credit Canada (FCC) loans, the loan converts to prime interest rate +2.95% on October 1, 2024 until the loan’s maturity date, which is March 15, 2025. For Scotiabank’s Yield More Financing™ Program loans, credit lines above $200,000 will convert to prime +1.95% until the loan’s maturity date, February 29, 2025. On October 1, 2024, credit lines below $200,000 will convert to prime +2.95% until the loan’s maturity date, February 29, 2025.

No purchase minimum required to be eligible for the promotions stated herein.

FBN's Flag Logo

Notification

Error