Darcy Telenko

Extension Field Crop Pathologist, Purdue University. Opinions here may not reflect official views of Purdue University

[Darcy Telenko @DTelenko]

Please see below and help us quantify recent rainfall and flooding impacts on crops.

[Dan Quinn @PurdueCorn]

🚨🚨 Calling all Indiana Farmers, Consultants, and Advisors. Please help us out and take a minute to fill out this short survey to help quantify recent rainfall and flooding impacts on crops in the state. Please share also.

@PurdueAg @PurdueExtension

https://t.co/Eb0g6T4PB5

[Dan Quinn @PurdueCorn]

Was able to spend last week traveling East-Central Indiana with @DTelenko and @PurdueSoybean. Very eye opening and disheartening to see the impacts from the early August storms and flooding on the crops in this area of the state.

@PurdueExtension @PurdueAg @PurdueAgryExt

[Crop Protection Network @CropNetwork]

Five major mycotoxins are associated with corn ear rots. If fields had >10% moldy ears, test for mycotoxins.

Read more in Extension's https://t.co/JcaVCvpV3L

@badgercropdoc @baldpathologist @travisfaske @MartinChilvers1 @ppp_trey @AlbertTenuta @MahDuffeck @PACropDoc @alisonrISU @MandyBish1 @cropdoc08 @AlbertTenuta @LSUAgCenter @croptoxcare

[Crop Protection Network @CropNetwork]

Keep livestock healthy. Manage mycotoxins in silage. Watch the CPN TV episode on this topic at https://t.co/EaStUqF8N8.

From @badgercropdoc & @MartinChilvers1.

@NationalCorn @WIAgContent @MSUEFieldCrops @MSUExtension @wicorngrowers @MI_Corn @croptoxcare #mycotoxins #corn #silage

[Crop Protection Network @CropNetwork]

Fungicide is often considered after hail injury to corn due to the plant health statements present on many fungicide labels coupled with the natural desire to take action following a hailstorm.

An Overview of Hail Injury and Fungicide Use on Corn provides info to evaluate the potential benefits of fungicide application, and make the most profitable management decisions following hail injury in corn in upcoming growing seasons.

Read more at https://t.co/nrVtZmgn3J.

@MartinChilvers1 @AlbertTenuta @ISU_IPM @badgercropdoc @PurdueCorn @DaisyHAhumada @baldpathologist @MandyBish1 @travisfaske @NDSUExtension @cropdoc2 @UTcrops @PlantPathISU @ppp_trey @cropdoc08 #corn #fungicide

[Indiana Soybean Alliance @INSoybean]

Indiana farmers, we want to hear from you.@PurdueExtension is working to better understand the scope and severity of recent extreme weather on field crops and agricultural operations. Please take a few minutes to complete this short survey: https://t.co/01b3NnZ4xW

[Crop Protection Network @CropNetwork]

“Fall soil samples collected after harvest (up to 6 weeks after the R8 growth stage) can be useful to monitor changes in [root-knot nematode] population densities or to make management decisions for the subsequent cropping season. Soil samples should be collected at an 8 to 10-inch (20 to 25-cm) soil depth within the root zone of the previously existing crop.”

From the Overview of Root-Knot Nematodes https://t.co/MaCFIl6FBQ by @travisfaske @baldpathologist @MartinChilvers1 @PACropDoc @dsmuelle @OnofreLab @ppp_trey @Nemasoil @alabamaED @DTelenko @AlbertTenuta +more

@TheSCNCoalition @MahDuffeck @NematodeGuy @UFcropnematodes #USSoy

[Crop Protection Network @CropNetwork]

Planting disease-resistant wheat varieties is the first step in managing major wheat diseases like wheat streak mosaic, Fusarium head blight, stripe rust, and tan spot.

@USWBSI @WheatInnovation @OhioCornWheat @wheatgrowers @WheatTrials @maddishires @travisfaske @DTelenko @StrayerScherer @ppp_trey @MartinChilvers1 @baldpathologist @MandyBish1 @badgercropdoc @thppdd_lab

[Crop Protection Network @CropNetwork]

Watch Crown Rot of Corn CPN TV at https://t.co/O9IDErOWgJ.

From Extension. @alisonrISU @UNL_CropWatch

@UNLExtension @DylanMangel @Talon_Mues @ISUANR @ISUExtension @livdooley14 #corn

[Wade Webster @BisonBeanDoc]

Hot off the press‼️ This is a great diagnostic guide for field scouting of stem and crown rot disease of soybeans. Great resources if trying to identify SDS and Red Crown Rot.

[Crop Protection Network @CropNetwork]

There are five major mycotoxins associated with ear rots. Toxic effects vary by type, concentration, exposure, and animal species.

If a field has kernel or ear rot problems (10%+ of ears are moldy), test for mycotoxins.

For more info, see Corn Mycotoxin FAQs at https://t.co/JcaVCvpned.

From Extension. @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @MahDuffeck @alisonrISU @DTelenko #harvest26 #corn #agtwitter @croptoxcare

[Crop Protection Network @CropNetwork]

Crop Protection Network creates FREE tools to help farmers and agronomists manage crop pests. From Extension.

◾️Fungicide ROI Calculator: https://t.co/RaXu613e1W
◾️Fungicide Efficacy Guide: https://t.co/fv02rbx95Q
◾️Disease Forecasting: https://t.co/2rBNfs2dqo
◾️Crop Issue Reports: https://t.co/JKVevLVPbg +lots more.

Visit us at the #FarmProgressShow in tent 718!

@FPShow #FPS26 @alisonrISU @DTelenko @alabamaED @badgercropdoc @travisfaske @baldpathologist @MandyBish1 @DylanMangel @BisonBeanDoc @maddishires @ppp_trey

[Darcy Telenko @DTelenko]

@alisonrISU @corndisease want to come and help us in Indiana we are just getting started?

[Crop Protection Network @CropNetwork]

It's essential to test grain and whole-plant silage for mycotoxins if corn ear rots are a significant problem. Obtaining a representative sample for mycotoxin testing is critical for accurate results.

Read more in Corn Grain and Silage Sampling and Mycotoxin Testing https://t.co/oBZzoO8v1m.

From @badgercropdoc @baldpathologist @MartinChilvers1 @travisfaske @dsmuelle @ppp_trey @AlbertTenuta @cropdoc08 @DaisyHAhumada @MandyBish1 @MahDuffeck @alisonrISU @maddishires @DTelenko +others.
#corn #mycotoxins @croptoxcare

[Farm Journal @FarmJournal]

Red crown rot is now active in at least eight Midwest states. The significance of the disease is building. The Crop Protection Network estimates 7.7 million bushels of soybeans were lost in 2025 versus 121,000 bushels in 2024. https://t.co/SpjyUrTwL7

[Darcy Telenko @DTelenko]

@Agronomy_Guy Southern rust doesn't overwinter, each year it will blow in with weather. A disease that has been in corn for many decades.

[Martin Chilvers @MartinChilvers1]

Now is a great time to scout for red crown rot @MSUDiagnostics https://t.co/dIaDRDButf @MSU_PSM

[Ed Sikora @alabamaED]

@CropNetwork @Mariela24fdez @DTelenko The fungal disease red crown rot of soybean produces red perithecia on lower stems & roots of infected plants. Points of view (POV) of pathologists looking down upon perithecium and the POV of the perithecium looking up at pathologists #Soya

[Crop Protection Network @CropNetwork]

“Symptoms caused by red crown rot can look similar to those caused by several other diseases. The presence of perithecia on lower stems and roots can improve the accuracy of a red crown rot diagnosis, but other fungi may produce structures that can look similar.”

From An Overview of Red Crown Rot of Soybean https://t.co/tYfNIIcfdJ by @cropdisease @baldpathologist @MandyBish1 @BorisCamiletti @MartinChilvers1 @NCLegumeLady @ppp_trey @badgercropdoc @DTelenko +more

@travisfaske @maddishires @ISUCropNews @BisonBeanDoc @SpurlockLab @DylanMangel @alabamaED @ILSoybean @INSoybean #USSoy

[Dan Quinn @PurdueCorn]

Late-season rainfall, flooding, and cloudy weather impacts on Indiana Corn.

@PurdueAgronomy @PurdueAg @PurdueExtension @INCornFarmers

https://t.co/JoPGgTDo0B

[CORN Network @corn_network]

🌽 Timing matters when managing foliar diseases in corn.

Drs. Daniel Quinn and Darcy Telenko discuss how well-timed fungicide applications can extend grain fill, increase kernel weight, and ultimately contribute to higher yields.

Watch: 👉 https://t.co/OiKMPEvTrX