Why Your Fertilizer Isn’t Working (And What Soil Health Has To Do With It) | AG & Culture Podcast Ep. 3

Farmers and homeowners spend billions on fertilizer every year.

So why are so many seeing less return on the same inputs?

In Episode 3 of the AG & Culture Podcast, Mike Usry and Joseph Boehm break down one of the biggest misconceptions in modern agriculture: fertilizer isn’t the problem — but it’s also not the solution.

Drawing from decades of soil study and real-world experience, Mike explains:

• Why over-reliance on NPK (Nitrogen, Phosphorus, Potassium) leads to diminishing returns

• What fertilizer actually is — and what it isn’t

• The difference between macro nutrients and trace minerals

• Why carbon is the most ignored element in soil health

• How synthetic fertilizers affect soil pH and salinity

• The “soil engine” analogy — microbes vs. fuel

• What over-fertilization really does underground

• How to revitalize depleted soil

• Why monocropping damages ecosystems

• How long land should rest to recover

• The difference between passive rest and active restoration

• The balance between synthetic efficiency and regenerative systems

Mike also addresses whether soil becomes “addicted” to fertilizer and explains why the real issue isn’t chemical dependence — it’s biological imbalance.

This episode challenges the idea that more fertilizer equals more production and instead focuses on the unseen world beneath your feet: the soil microbiome.

If you’re a:

– Farmer

– Rancher

– Home gardener

– Lawn care professional

– Homesteader

– Or just someone curious about food systems

This conversation will change the way you think about fertilizer forever.

Coming Up Next: Episode 4 — The Power of Carbon

Listen now and subscribe for deeper conversations on agriculture, soil biology, regenerative systems, and the cultural roots of food.