Rhyzogreen on Row Crops: What Farmers Need to Know

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Most of what you hear about Rhyzogreen comes out of the ranching and hay world. Trevor Greenfield, founder of Rio Nutrition, is the first to admit it. But he's got a message for the row crop growers who've been watching from the sidelines: the biology doesn't care what you're growing.

“The secret is right beneath our feet,” Greenfield says. “We’re not saying Rhyzogreen replaces fertilizer—but there are ways to work with nature that most producers haven’t fully tapped into.”

That’s not just a cool thing to say. It’s the conclusion drawn from six years of replicated testing.


What’s Already Happening in Your Soil

Long before Rhyzogreen—and before “soil health” became a buzzword—your soil was alive and working.

  • Microbes were unlocking nutrients
  • Fungal networks were extending root systems
  • Earthworms were reducing compaction

It was all happening... just not at the scale it could be.

Across over 440 replicated trials in the western U.S. and Canada, Rhyzogreen increased microbial biomass—what Greenfield puts in simple terms; “life in the soil”—by an average of 56%.

That number matters.

Research estimates there are 1,000 to 2,000 pounds of microbes in the top six inches of soil per acre. A 56% increase adds roughly 560 pounds of additional microbes.

As those microbes cycle and die off, 7–10% of their body weight converts to nitrogen.

“It’s almost like we’ve created a nitrogen production mechanism in the soil,” Greenfield explains.

At the conservative end:

560 lbs of additional microbes

× 7% nitrogen conversion

= ~40 lbs of nitrogen per acre

Produced on-site. No invoice attached.


Internet For Your Roots

Where Rhyzogreen really shifts performance is in fungal development.

In a forest, fungal populations run about five times what you find in farmground. That gap is not an accident. It's a measure of what intensive tillage and chemistry have cost over the decades.

Across over 440 trials, Rhyzogreen increased fungal populations by 96% on average.

Greenfield reaches for an analogy that lands. "Prior to the internet, we live in a small town — Redwood Falls, Minnesota, population 5,500. If I want to buy anything for the farm, I go to the local store ... In the event of the internet, now suddenly, if I need a pair of jeans, I can source them from anywhere and it comes to me."

The fungal network in your soil works the same way for a plant's root system. "The fungal in the soil is like communication highways, transportation highways, along which nutrients, water, oxygen flows. It's like an extension of the root — it's not part of the root, it's an extension of the root. So that plant can go fetch nutrients or water from distances away."

For a row crop farmer, that translates to two things directly: better nutrient cycling from inputs you've already paid for, and drought resilience in years when rain doesn't show up. "Water is the most finite resource in agriculture, period," Greenfield says. "With increasing the fungal population of our soils, we can enable those plants to go fetch and to have a broader reach."


The Hidden Workforce: Earthworms

This is where Greenfield will freely admit he gets a little giddy. But there's hard math behind it.

Across over 170 worm digs — a cubic foot of treated versus untreated ground — Rhyzogreen showed a 124% average increase in worm count. For the row crop farmer managing compaction from heavy equipment, that matters more than it might sound.

"Look at the size of the tires, float tires, a lot of different agricultural solutions that folks are chasing to reduce compaction," Greenfield says. Worms are doing that work from the inside, tunneling through, aerating, improving water infiltration — and they're doing something else. "They move through the soil, they ingest dirt. And what comes out the back end is between five and fifteen percent more plant available." And when worms die, about 10% of their body weight is nitrogen.

Run the numbers: research shows you've conservatively got ~100 pounds of earthworms per acre in the top six inches. Then, if you increase that by 124%, you've added another 12 pounds of nitrogen per acre. Again, not imported. Homegrown.

 


The Cost of Water You’re Not Capturing

Greenfield calls water infiltration the one he's most passionate about. Over 80 studies, an average 140% increase in absorption rate in Rhyzogreen-treated soils versus controls.

For a row crop farmer, this is everything. Every inch of rainfall that runs off instead of soaking in is an inch that didn't reach the root zone. And it took something with it on the way out.

"With runoff comes erosion," Greenfield says, "and erosion means the loss of our precious, precious topsoil — call it black gold."

The structural change Rhyzogreen creates in treated soils is what drives the difference. "We've talked about it before as more of a chocolate cake consistency versus a fudge consistency. With a chocolate cake, you've got aggregation, you've got pore spaces, you've got air spaces, you've got a structure where nutrients can cycle and life can flourish — versus a hard, compacted, fudge-like consistency which doesn't lend itself to that natural cycling."

For ground that's been worked hard, that's not a small thing.


The Bottom Line

Across all trials, the results are consistent:

  • +56% life in the soil
  • +96% fungal
  • +124% earthworms
  • +140% water infiltration

Combined nitrogen contribution from microbes and earthworms alone approaches 50 lbs per acre—from biology that was already there, waiting to be activated.

“We’re investing in the production capacity of the land,” Greenfield says. “That reduces dependence on synthetic inputs—which cost money and create risk.”

This isn’t forage-specific.
It’s not crop-specific.

It’s soil. And every acre you farm depends on it.

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