Episode 7: Diesel Exhaust Fluid (DEF) Explained: Why Farmers Hate It episode artwork

EPISODE · Mar 18, 2026 · 19 MIN

Episode 7: Diesel Exhaust Fluid (DEF) Explained: Why Farmers Hate It

from AG & Culture · host Southland Organics

Diesel Exhaust Fluid (DEF) Explained: Why Farmers Hate It | AG & Culture Podcast Ep. 7Why are farmers across America frustrated with Diesel Exhaust Fluid (DEF)?In Episode 7 of the AG & Culture Podcast, Mike Usry and Joseph Boehm dive into one of the most controversial topics in modern agriculture: DEF regulations, emissions systems on diesel equipment, and the real-world impact on farmers.What started as an environmental regulation designed to reduce diesel emissions has become a major source of frustration for farmers, truck drivers, and equipment operators across the country.In this episode, we break down what DEF (Diesel Exhaust Fluid) actually is, why it was implemented, and why many farmers believe the system has created more problems than it solves.  • What Diesel Exhaust Fluid (DEF) actually is• Why emissions regulations were introduced for diesel engines• How DEF systems work in tractors, trucks, and heavy equipment• Why farmers say DEF systems fail too often• The real-world dangers of DEF shutdown systems on equipment• Why emissions policies designed for cities may not work for rural agriculture• The rising costs of sensors, repairs, and equipment downtime• The “Right to Repair” debate with modern farm equipment• How government policy impacts farm productivity and food prices• The tension between environmental regulation and practical farming Mike shares firsthand experiences with tractors, trucks, and skid steers that shut down unexpectedly due to DEF system failures — sometimes creating dangerous situations in the field or on the highway.The conversation also explores the broader debate between environmental policy, rural infrastructure, and agricultural realities, asking an important question:Are regulations designed for urban environments being applied to rural America without considering how farms actually operate? For many farmers, the problem isn’t the idea of improving emissions — it’s how these systems were implemented and the unintended consequences they’ve created in real-world agriculture.Whether you’re a farmer, equipment operator, policymaker, or someone interested in agriculture, energy policy, or the future of food production, this episode offers a candid look at a controversial issue affecting modern farming.

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Episode 7: Diesel Exhaust Fluid (DEF) Explained: Why Farmers Hate It

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Diesel Exhaust Fluid (DEF) Explained: Why Farmers Hate It | AG & Culture Podcast Ep. 7Why are farmers across America frustrated with Diesel Exhaust Fluid (DEF)?In Episode 7 of the AG & Culture Podcast, Mike Usry and Joseph Boehm dive into one of the ...

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