@IAStateWeedSci

Assistant Professor in Weed Science @ Iowa State University

 Ames, IA
Joined August 2009
  • Tweets921
  • Following879
  • Followers1.5K
39Media
Who is thinking of doing a fall herbicide application this year?
Meaghan Anderson@mjanders1Oct 16
This made me giggle. There are definitely some fields in Iowa that will need it this year but I doubt we’ll get around to it with the weather we’re having!
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Important information for you forage producers in light of the wet weather.
ISU Crop News@ISUCropNewsSep 28
Are you considering a late alfalfa cutting? Wet conditions have delayed harvest, but winter survival matters most. Check out ICM's new blog on alfalfa cutting in these conditions before making your decision. Read at go.iastate.edu/4MVKGK #Alfalfa #Harvest #Extension #IowaAg

Should I take a late fall alfalfa cutting?

crops.extension.iastate.edu
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The challenges of a wet fall....
Dean Grossnickle@DeanGrossnickleSep 30
Slater IA with a slug.
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Wesley Everman retweeted
ISU Crop News@ISUCropNewsSep 14
Have you seen kochia in your fields this year? This weed is showing up more and more in Iowa fields. Report your kochia findings to help researchers. Learn more at go.iastate.edu/1ZHGBF\ @mjanders1 @IAStateWeedSci #IowaCrops #Kochia #Weeds
Kochia weeds in a soybean field.

ALT Kochia weeds in a soybean field.

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Wesley Everman retweeted
Meaghan Anderson@mjanders1Sep 10
Now through crop harvest is the easiest time of year to identify Asian copperleaf in crop fields. Keep an eye out for this species! #ISUCrops crops.extension.iastate.edu/…
Heart-shaped bracts surrounding flowers on a maturing Asian copperleaf plant

ALT Heart-shaped bracts surrounding flowers on a maturing Asian copperleaf plant

Heart-shaped bracts along the stem of a maturing Asian copperleaf plant

ALT Heart-shaped bracts along the stem of a maturing Asian copperleaf plant

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Wesley Everman retweeted
ISU Crop News@ISUCropNewsAug 12
Now is a great time to get out and do yield estimates/ check on kernel development. One thing that has been noted in fields this growing season is incomplete kernel set on some ears. To better understand what factors may have caused this, check out: crops.extension.iastate.edu/…
Two hands holding ears of corn in a green cornfield, one ear fully covered with kernels, the other partially husked showing uneven kernel growth.

ALT Two hands holding ears of corn in a green cornfield, one ear fully covered with kernels, the other partially husked showing uneven kernel growth.

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Wesley Everman retweeted
Meaghan Anderson@mjanders1Aug 11
Even if it rains, we’ll be there and we hope you will too! We’ll be inside the ag building if it’s raining during the contest! 📍See you Friday at the @IowaStateFair
Meaghan Anderson@mjanders1Jun 29
📢Tis the season to practice identifying weeds! Join us at the @IowaStateFair for the Weed ID Contest on Aug. 14, from 9-11:30am in front of the Ag Building. Ribbons, money, and bragging rights to the top 5 competitors in each category (Professional, general, youth)!
Iowa State Fair Weed ID Contest on August 14 from 9-11:30 a.m. in front of the agriculture building. Three images of weeds.

ALT Iowa State Fair Weed ID Contest on August 14 from 9-11:30 a.m. in front of the agriculture building. Three images of weeds.

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Wesley Everman retweeted
ISU NC Crops@nciacropsJul 15
Yesterday I took some time to scout fields with known Asian Copperleaf infestations. Both sites seemed to have decent post-applied herbicide control, but the next flush is already emerging. It just keeps germinating!
Asian Copperleaf seedlings.

ALT Asian Copperleaf seedlings.

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Wesley Everman retweeted
ISU ANR Extension@ISUANRJul 8
Think you know your weed species? 🎡 The annual Weed Identification Contest is back for this year's Iowa State Fair on Friday, Aug. 14. Learn more 👉extension.iastate.edu/news/w… @ISUCropNews
Three people observe a weeds on a table at the Iowa State Fiar

ALT Three people observe a weeds on a table at the Iowa State Fiar

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Wesley Everman retweeted
Meaghan Anderson@mjanders1Jul 6
It seems like our POST herbicides worked really well this year, but that won’t stop some of these big ones from coming back. Waterhemp is a tough weed to keep down. #ISUCrops
Waterhemp plant after herbicide spray

ALT Waterhemp plant after herbicide spray

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Wesley Everman retweeted
ISU Crop News@ISUCropNewsJul 4
Happy 4th of July from the Crops Team!
Happy 4th of July!

ALT Happy 4th of July!

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Wesley Everman retweeted
ISU NC Crops@nciacropsJul 2
If your ISU Extension Field Agronomists were to host multiple Fertilizer and Finance workshops (2-3 hours) around the state to help you make fertility plans for this fall, when do you prefer to attend? Feel free to share this post.
42%August
26%Sept., Before Harvest
32%After Harvest
38 votes • Final results
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Wesley Everman retweeted
ISU Crop News@ISUCropNewsJul 1
One week away! If you haven't already, mark your calendar for July 8 at the Northwest Research Farm for their Summer Field Day. We'll see you there! 🔗 go.iastate.edu/RQQQAV #IowaAg #Extension #ISUCrops #FieldDays
Northwest Research Farm Summer Field Day, July 8, 9:00 AM. 6320 500th St., Sutherland, IA 51058.

ALT Northwest Research Farm Summer Field Day, July 8, 9:00 AM. 6320 500th St., Sutherland, IA 51058.

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Wesley Everman retweeted
Meaghan Anderson@mjanders1Jun 29
📢Tis the season to practice identifying weeds! Join us at the @IowaStateFair for the Weed ID Contest on Aug. 14, from 9-11:30am in front of the Ag Building. Ribbons, money, and bragging rights to the top 5 competitors in each category (Professional, general, youth)!
Iowa State Fair Weed ID Contest on August 14 from 9-11:30 a.m. in front of the agriculture building. Three images of weeds.

ALT Iowa State Fair Weed ID Contest on August 14 from 9-11:30 a.m. in front of the agriculture building. Three images of weeds.

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This week! Digital Ag will have their See and Spray and also their spray done to discuss how these technologies work and answer any questions you have!
ISU Crop News@ISUCropNewsJun 22
Remember if you are planning to attend the 2026 ISU Weed Science Field Day on July 1 please RSVP by June 24 at go.iastate.edu/weeds. We hope to see you there! #ISUCrops
“The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

ALT “The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

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Wesley Everman retweeted
AHRI GRDC@AHRI_TeamJun 25
Q: How does 2,4‑D work? A: First, it overstimulates growth; next it forces stomata to close, stopping photosynthesis. Eventually the plant wastes energy detoxifying free radicals and starves to death. There’s more—want to dive deeper? buff.ly/pMDDG9z #herbicide

How stuff works: 2,4-D, free radicals and monkeys - Australian Herbicide Resistance Initiative...

It’s pretty amazing that 2,4-D is our oldest herbicide, yet scientists have only just worked out how it actually kills weeds. This has taken years...

ahri.uwa.edu.au
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Wesley Everman retweeted
ISU Crop News@ISUCropNewsJun 24
Have you registered for the Weed Science Field Day - July 1? The registration deadline (helps with a headcount for lunch) is today!!!! 🔗 go.iastate.edu/weeds
“The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

ALT “The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

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A great visual on the effect of wind and physical drift on herbicide movement and off target injury. Applications have been made in windy weather this year to try to catch up to weeds. It doesn't take much of some herbicides to show significant injury symptoms.
Dean Grossnickle@DeanGrossnickleJun 24
Gramoxone drift…burndown field 1/4 mile away.😳
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Wesley Everman retweeted
ISU Crop News@ISUCropNewsJun 23
July 8, 9:00 AM. A Summer Field Day awaits! At the Northwest Research and Demonstration Farm in Sutherland, IA field agronomists and professors want to give you the best insights into crop production for this growing season. Learn more: go.iastate.edu/RQQQAV #Crops #FieldDays
Northwest Research Farm Summer Field Day, July 8, 9:00 AM. 6320 500th St., Sutherland, IA 51058.

ALT Northwest Research Farm Summer Field Day, July 8, 9:00 AM. 6320 500th St., Sutherland, IA 51058.

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We are looking forward to sharing some new research and technology with you next week!
ISU Crop News@ISUCropNewsJun 22
Remember if you are planning to attend the 2026 ISU Weed Science Field Day on July 1 please RSVP by June 24 at go.iastate.edu/weeds. We hope to see you there! #ISUCrops
“The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

ALT “The Iowa State University Weed Science Field Day will be hosted on July 1 at the Curtiss Farm at 2219 State Avenue in Ames. Check-in will begin at 8:30 a.m. and the field day will be from 9 a.m. to noon. Learn more and register by June 24 at https://go.iastate.edu/weeds.”

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