Dr. Alyssa Collins

Director of the PennState Southeast Research & Extension Center and Assoc. Prof. in field crops pathology. She/her @pacropdoc on the sky that is blu. Need code?

[Crop Protection Network @CropNetwork]

Disease reduced corn yield by nearly 1.3 billion bushels worth more than $5.2 billion USD in 2025.

Southern rust caused the greatest losses, followed by tar spot and northern corn leaf blight. Read the whole article at https://t.co/I7qUtW8HBH.

From @alabamaED @travisfaske @bobkemerait @BorisCamiletti @DTelenko @alisonrISU @dsmuelle @OnofreLab @cropdoc08 @PatePlantSci @ppp_trey @MartinChilvers1 @baldpathologist @MandyBish1 @tjcksn @DaisyHAhumada @NDSUcerealpath @MahDuffeck @AlbertTenuta @PACropDoc @MPlumblee @maddishires @YuanZeng3 @badgercropdoc +others.

#corn #agriculture #farming @NationalCorn

[Crop Protection Network @CropNetwork]

Fusarium stalk rot causes shredded pith that may be tan to light pink. Brown streaks may be observed on the lower internodes.

The fungi overwinter in corn residue, other dead plant residue, and in corn seed.

Resistance to Fusarium stalk rot is available. Rotation and tillage will reduce inoculum.

@DTelenko @badgercropdoc @MandyBish1 @MartinChilvers1 @maddishires @alisonrISU @tjcksn @baldpathologist @alabamaED @travisfaske @ppp_trey @MahDuffeck @cropdoc08 @NationalCorn #corn #harvest25

[Crop Protection Network @CropNetwork]

Pre-ordering fungicides for 2026? Choose the best products for diseases most likely to be an issue in your fields with research-based ratings:

Corn Foliar Diseases: https://t.co/gcGmy89UIR
Soybean Foliar Diseases: https://t.co/QNfX2iqVt1
Soybean Seedling Diseases: https://t.co/FyB9KxrF8V
Wheat Diseases: https://t.co/iuRPyrznII
Alfalfa Diseases: https://t.co/NMbSz0c63Y

@baldpathologist @alabamaED @alisonrISU @DTelenko @badgercropdoc @MartinChilvers1 @YuanZeng3 @travisfaske @ppp_trey @DylanMangel @BisonBeanDoc @tjcksn @maddishires @dsmuelle @BorisCamiletti @MahDuffeck @PACropDoc #plant26 @cropdoc08

[Crop Protection Network @CropNetwork]

Corn ear rot scouting and ID. Watch the CPN TV episode on this topic at https://t.co/ilXlKxZ93w.

From @UKExtension's @cropdoc08.

@UKAgriculture @KentuckyCrops @KYFB @kentuckyag @TheRealKyCorn @RD_Kentucky @NationalCorn #corn #harvest25 #AgTwitter

[Crop Protection Network @CropNetwork]

Check out the Fungicide ROI Calculator for White Mold of Soybean from Extension at https://t.co/kRVwW2749Y.

@BisonBeanDoc @badgercropdoc @DTelenko @dsmuelle @MartinChilvers1 @hoperbecton @datascience_uw @CFAES_OSU +others @SoyResearchInfo @SoybeanScience1 @WISoyCheckoff @missourisoybean @Ohiosoycouncil @MichiganSoybean @NDSoybean @NDSoyGrowers #whitemold #soy #soybean #ROI #USSoy

[Crop Protection Network @CropNetwork]

Will a fungicide be worth it?

Corn Fungicide Return on Investment Calculator at https://t.co/YBWwXpiqzf. Save this site to help with decision-making later this season.

Based on data from @baldpathologist @MandyBish1 @kmbiss @SDSUExtension @MartinChilvers1 @PACropDoc @travisfaske @NDSUcerealpath @tjcksn @TNplantDR @dsmuelle @ppp_trey @alisonrISU @alabamaED @badgercropdoc @DTelenko @AlbertTenuta @cropdoc08 @datascience_uw +more. #agx #agtwitter #corn #plant25 #grow25 #ROI #farming

[Crop Protection Network @CropNetwork]

560 million bushels gone. $2.9 billion lost.

These are the estimated losses caused by wheat diseases from 2018 to 2021. Read more in the new @planthealthprog publication at https://t.co/BSVqMRmu1H.

From @NDSUcerealpath @baldpathologist @KelseyFAndersen @kmbiss @cropdisease @MartinChilvers1 @PACropDoc @travisfaske @AlbertTenuta @DTelenko @badgercropdoc @ppp_trey @thppdd_lab +more.

@OhioCornWheat #wheat @NDSUExtension @NDAgExpStation

[Crop Protection Network @CropNetwork]

Wheat Fungicide Efficacy Guide for 2025 just released at https://t.co/iuRPyrzVyg

From Extension. @KelseyFAndersen @KSUWheatDisease @cropdoc08 @cropdisease @NDAgExpStation @PACropDoc @MartinChilvers1 @AlbertTenuta @travisfaske @BorisCamiletti @DTelenko @ppp_trey @baldpathologist @MandyBish1 @OSUwheatdisease @WSUWheatDoc @badgercropdoc #wheat

[Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 @MahDuffeck]

Very interesting results were obtained from using biostimulants in soybean production in the U.S.

"Among 100 growing environments in 22 states, there was no product that consistently improved soybean yield compared to the non-treated control"

[Crop Protection Network @CropNetwork]

Fungicide Efficacy Guides. Use the best product when disease risk is high and economic gain likely.

Soy Seedling: https://t.co/FyB9KxscYt
Corn Foliar: https://t.co/gcGmy8asyp
Soy Foliar: https://t.co/QNfX2irtiz

@DTelenko @alabamaED @BorisCamiletti @cropdoc08 @badgercropdoc @MahDuffeck @alisonrISU @maddishires @DylanMangel @W_Webster74 @tjcksn @MartinChilvers1 @dsmuelle @DaisyHAhumada @NDAgExpStation @travisfaske @ppp_trey @SoybeanScience1 @ISU_IPM @PACropDoc @YuanZeng3 @cropdisease @AlbertTenuta

[Daniela Carrijo @carrijo_crops]

Is wheat straw yield affected by the application of a plant growth regulator? What about straw quality if used for animal bedding? @LarissaVinis #wheat
https://t.co/u0kJSuO58t

[Crop Protection Network @CropNetwork]

In 2024, disease reduced corn yield by an estimated 6% in the U. S. and 3.7% in Ontario, resulting in an estimated loss of 963.4 million bushels.

Get info on the most important corn diseases at the NEW pub https://t.co/CjqXxtXwPA.

From Extension. @alabamaED @travisfaske @csuextension @UDExtension @UGAExtension @BorisCamiletti @DTelenko @alisonrISU @dsmuelle @ISU_IPM @OnofreLab @KSUPlantDr @cropdoc08 @PatePlantSci @ppp_trey @LSUAgCenter @MartinChilvers1 @UMNExt @baldpathologist @MandyBish1 @tjcksn @ccecornell @DaisyHAhumada @NDSUExtension @CFAES_OSU @MahDuffeck @AlbertTenuta @PACropDoc @MPlumblee @maddishires @epp_tn @txextension @YuanZeng3 @badgercropdoc #corn #agx #agtwitter #extension

[Crop Protection Network @CropNetwork]

2025 Fungicide Efficacy for Corn Foliar Disease at https://t.co/gcGmy89UIR

Based on research across corn-producing states.

From Extension. @cropdoc08 @DaisyHAhumada @baldpathologist @txextension @ccecornell @MandyBish1 @BorisCamiletti @MartinChilvers1 @PACropDoc @UFPlantPath @MahDuffeck @travisfaske @NDSUExtension @tjcksn @TNplantDR @bobkemerait @PatePlantSci @VACoopExt @UMNExt @dsmuelle @CUESNews @rodrigobonofre @CFAES_OSU @ppp_trey @alisonrISU @alabamaED @maddishires @badgercropdoc @DTelenko @AlbertTenuta @YuanZeng3 @NationalCorn #agx #farming #agtwitter #corn #plant2025

[Crop Protection Network @CropNetwork]

2025 Soybean SEEDLING Disease Fungicide Efficacy Ratings from Extension at https://t.co/FyB9KxrF8V.

@baldpathologist @badgercropdoc @DTelenko @alisonrISU @AlbertTenuta @DylanMangel @maddishires @MandyBish1 @travisfaske @W_Webster74 @ppp_trey @alabamaED @PACropDoc @MartinChilvers1 @TNplantDR @bobkemerait @dsmuelle @rodrigobonofre @OnofreLab @cropdoc08 @NCLegumeLady @MahDuffeck @IanMSmall1 @cropdisease @BorisCamiletti @ccecornell @UDExtension @UMNExt @txextension @CFAES_OSU @CUESNews @LSUAgCenter +others #USSoy

[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/JcaVCvpned

@badgercropdoc @baldpathologist @travisfaske @MartinChilvers1 @ppp_trey @AlbertTenuta @MahDuffeck @PACropDoc #IPM @a@alisonrISU @MandyBish1 @cropdoc08 @AlbertTenuta @LSUAgCenter

[Crop Protection Network @CropNetwork]

https://t.co/7HB94cY48j

[Crop Protection Network @CropNetwork]

Try out the new Fungicide Efficacy Tool at https://t.co/fv02rbx95Q

Data for corn, soybean, wheat, and alfalfa from Extension.

@cropdoc08 @MartinChilvers1 @DTelenko @MandyBish1 @alabamaED @badgercropdoc @dsmuelle @alisonrISU @NDSUcerealpath @TNplantDR @PACropDoc @bobkemerait @baldpathologist @ppp_trey @AlbertTenuta @rodrigobonofre @KSUCropdiseases @KSUWheatDisease @UMNExt @ccecornell @travisfaske @W_Webster74 @DylanMangel @BorisCamiletti @cropdisease @NCLegumeLady @MahDuffeck @IanMSmall1 @USWBSI @UnitedSoy @NationalCorn @NAFANews

[Caio Brunharo @caiobrunharo]

I am recruiting for a postdoctoral scholar and 3 PhD positions in my lab @PSUPlantScience for projects related to herbicide resistance, integrated weed management, and precision weed management. Details below. Don't hesitate to reach out to discuss further. Please share!!!

[Maddi Shires @maddishires]

SDState extension has an opening for a horticulture plant pathology field specialist! This is a brand new position with lots of opportunities and a group of people who are very excited to work with you! Check it out and think about applying!

https://t.co/wXnzm6Ywhj

[Crop Protection Network @CropNetwork]

Need CCA CEUs before the end of 2024?

Read or watch our Extension resources and then take the quizzes at https://t.co/9JbN3tI6H6

@CCASoundAdvice @CCAOntario @IL_CCA @CertifiedCrop @IowaCCA @ASA_CSSA_SSSA @ARcropadvisers @nwccafwaa @rockymountcca @ND_CCA @nwccafwaa @PrairieCCA #cca