Retired Cornell Extension Entomologist and Professor; still focused on commercializing persistent biocontrol nematodes for long-term soil insect control.

Joined April 2013
76 Photos and videos
Bayer’s prediction about 2026 rootworm severity and farmers using persistent biocontrol nematodes for enhanced rootworm control
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Geographic illustration of farms across the US utilizing persistent biocontrol nematodes against soil insects in agriculture. These include rootworms, wireworms, and root weevils
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Geographic illustration of farms across the midwest utilizing persistent biocontrol nematodes against rootworm.
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Great way to apply persistent biocontrol nematodes against rootworm. A number of acres inoculated using this equipment in 2026 in Iowa and Illinois
And they are off running again for another season!!!
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Elson Shields retweeted
In Illinois this week pulling soil samples to test for @PBiocontrol nematodes. Most of these fields were applied a year or longer ago. A one time application to control Corn Rootworm can last for decades!
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Elson Shields retweeted
Add our biocontrol nematodes for a truly independent mode-of-action against rootworm. A single application provides multi year control.
Growing Bt Corn? Not complying with refuge requirements allows the resistant population to multiply and threaten the effectiveness of Bt traits. To manage resistance, check out these best practices: manageresistancenow.ca/insec…
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A few hundred acres of biocontrol nematodes will be applied in 2026 through this machine for rootworm control in corn.
How cool is this!? Did you know that there's such a thing as a 360 autonomous irrigator? I didn't! Now we both do! Have you seen one of these inaction? Operated something similar?
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Elson Shields retweeted
How cool is this!? Did you know that there's such a thing as a 360 autonomous irrigator? I didn't! Now we both do! Have you seen one of these inaction? Operated something similar?
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Application of Persistent Biocontrol Nematodes to organic vegetables growing in South Texas for wireworm control
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Live in Iowa? Curious about Biocontrol Nematodes and their impact on controlling Rootworm? Join us for lunch (on us)
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Elson Shields retweeted
I worked for 20 years in "Big Ag" so you don’t have to. This is what they don’t want you to know: Farmers don’t have time for conspiracy theories. Romanticize farming all you want, but without modern tools, you’d starve. GM crops aren't frankenfood. They cut pesticide use, resist drought, and improve yields, all while passing some of the strictest safety checks in science. They are the least unknown crops. Your food is safe. Period. Pesticides are tested more rigorously than most medicines. Farming isn’t killing the planet. Modern farming uses less land, less water, and fewer inputs than ever before. Innovation is the solution, not the problem. Organic farming still use pesticides. Some are more toxic and less effective than synthetic alternatives, meaning higher doses are needed. If you really care about feeding the world and protecting the planet, focus on facts, not fear. My name is Simon and my goal is to make people smarter, not angrier. Drop a “Hi” in the comments and let me know if you have any questions about Ag!
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Elson Shields retweeted
Why would USA help bail out Argentina while they take American soybean producers’ biggest market??? We shld use leverage at every turn to help hurting farm economy Family farmers shld be top of mind in negotiations by representatives of USA
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Elson Shields retweeted
Maybe it’s organic food?
23 Sep 2025
Maybe ivermectin causes autism?
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Elson Shields retweeted
Bt traits alone aren’t holding up. Resistance is spreading, and farmers across the Corn Belt are seeing the impact of this harvest. Persistent BioControl nematodes add a new mode of action. Not a replacement, but layered protection that extends trait durability, protects yield, and keeps fields resilient for the long run. Learn more at persistentbiocontrol.com #BuiltToPersist #LayeredProtection #RootwormResistance #CornRootworm #IPM #SustainableAg
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Elson Shields retweeted
The Far Side was so fucking good it’s still ahead of its time …
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Elson Shields retweeted
9 Sep 2025
There it is. Fungicide paid huge again.
This fungicide check was harvested today. 35 bu spread.
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Elson Shields retweeted
This fungicide check was harvested today. 35 bu spread.
Lots of fungicide checks are starting to vividly show up.
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