Why One California Farmer is Betting Big on Algae for Fertility

Mon, 09 Mar 2026 18:33:48 GMT

Rows of citrus trees stretch across the landscape under the California sun, their canopies forming neat green corridors between irrigation lines and tractor paths. Some trees are newly trimmed, others older and thicker from years of growth. It’s the kind of orchard scene that has long defined agriculture in this part of the state, where permanent crops dominate the landscape and generations of farmers have worked to coax productivity from difficult soils and an increasingly unpredictable water supply.

For fifth-generation farmer Justin Wylie , these groves are more than just another orchard to manage. They represent an opportunity to rethink how soil works on his farm and whether biology — specifically algae — can play a larger role in the future of California agriculture.

Wylie and his family farm roughly 4,000 acres across California’s Central Valley. Some of that land has been in the family for generations, while other acres are leased. Like many farms in the region, the operation produces permanent crops such as pistachios and citrus, commodities that require long-term planning and careful soil management.

“This is a long-term lease with an investment company partner,” Wylie says. “And we just entered into that lease last year. It’s a 15-year lease with a five-year extension.”

One of the ranches he’s currently working to improve came through a recent leasing agreement that gives the family time to invest in the land and experiment with new approaches. That time horizon matters. With permanent crops like oranges, orchard decisions can affect productivity for decades. The trees must be pruned, fertilized and irrigated carefully year after year, and the soil beneath them has to remain functional through increasingly hot and dry growing seasons.

When Wylie’s team first took over the ranch, some improvements were necessary before any new ideas could be tested.

“We were really lucky on this ranch,” Wylie says. “The previous guys, they did let some of the trees get overgrown, so we did have to come in and push a hedge and top and resize those trees.”

While the orchard needed structural work above ground, Wylie says the bigger opportunity lies beneath the surface. The ranch is now part of a broader effort on the farm to transition a portion of the acres toward organic and regenerative systems.

“For the majority of the ranch, as far as fertility, the soils, the condition of the ranch,” he says, “I think the big thing with this ranch is transitioning from a conventional model to an organic regenerative, which is part of our commitment in the lease. It’s part of the model of the lease here — that we transition the ranch from conventional to certified organic and regenerative.”

The transition is happening gradually. Wylie says roughly 25% of the farm’s acres are currently part of that shift, allowing the family to experiment with new soil-building practices without risking the entire operation.

But the push to explore regenerative systems didn’t begin with markets or policy. It started with a deeply personal experience.

A Personal Connection to Soil Health

Wylie says his interest in soil biology and regenerative farming took shape nearly a decade ago, around 2015 or 2016. At the time, his family was dealing with a serious health challenge involving his young son.

The experience pushed him to start researching nutrition, gut health and the human microbiome — topics that would eventually reshape how he thought about farming.

“[My son] was sick as a kid, and so we were doing everything we could to heal him,” Wylie says. “His gut ended up in the hospital a few times with an autism diagnosis.”

Doctors and therapists offered guidance, but the recommendations didn’t sit well with Wylie.

“And then at the time, the doctors and the therapist told us basically, ‘Practice acceptance,’” he says.

Instead, Wylie started searching for more information about gut health and what researchers were learning about the microbiome. Over time, he began seeing parallels between the human digestive system and the biological activity that happens in healthy soils.

“They started figuring out that autistic kids had very weak gut microbiomes,” Wylie says. “And so when you make that connection as a farmer and you start saying, ‘What are all the things I can do at home to not stress that?’”

That question eventually carried over into his work in the field. The farm’s first experiment with regenerative practices was modest.

“We started on 40 acres of pistachios, playing around with it,” he says. “What can we do here growing in a different system?”

At the same time, the regenerative agriculture movement was gaining momentum online, making it easier for farmers to explore new ideas.

“At the time, there were quite a few regenerative agronomists out there releasing podcasts and YouTube videos,” Wylie says. “So the information was there. It was never on my radar before. But once you join that community and industry, it’s pretty interesting.”

Building on What Came Before

Even as Wylie explores new biological tools, he says the farm’s current practices still build heavily on the work done by previous generations.

His father’s generation invested heavily in agronomy research and orchard management strategies, developing systems that helped the farm stay productive in California’s demanding growing environment. From pruning methods to fertilizer programs, many of those lessons still guide how the farm operates today.

Rather than abandoning those systems, Wylie says his goal is to refine them.

“It’s really a tweak,” he says. “In my mind it’s a slight change in the method, not a complete start over.”

The farm continues to rely on the knowledge accumulated through decades of conventional farming, while gradually introducing new practices aimed at improving soil biology.

“We’re just trying to make tweaks to the system that we’re already operating in on the other ranches to see if we can do this a different way,” Wylie says.

One of the biggest challenges in that transition is managing fertility.

California orchards have historically relied on precise fertilizer programs to keep trees productive. But moving toward organic or regenerative inputs can create a different nutrient dynamic, especially during the early years of transition.

Wylie says growers sometimes underestimate how sensitive orchards can be during that shift.

Managing the Transition Carefully

According to Wylie, one of the most common mistakes farmers make when transitioning to regenerative systems is reducing fertilizer too quickly.

He says orchards that have spent decades under conventional management are accustomed to intensive nutrient programs, and abruptly changing that system can cause yields to fall sharply.

On some ranches where regenerative practices have been in place for several years, Wylie says the difference in soil structure is already noticeable.

“There’s other ranches we’ve been farming regenerative for five years,” he says. “You can stick your hand in the soil and get your fingers down right there on the berms next to the trees — it’s chocolate cake.”

But he warns farmers shouldn’t assume that kind of soil health will appear immediately after switching systems.

“Until that day, do not pull back,” Wylie says.

He says the biggest mistake happens when growers assume they can immediately match their old fertility programs using organic inputs.

“That’s the mistake that growers make,” he says. “They think I’m going organic regenerative, I can match dollar for dollar, I can do the same thing I was doing conventionally.”

Instead, Wylie says the transition often produces what he calls a “J-curve.”

“You’re going to see that J-curve,” he says. “I mean, it’s going to tank.”

To avoid that, his farm relies heavily on testing.

“We pull a lot of sap samples, multiple tissues and soils per year,” Wylie says. “Kind of watching our fertility and making sure these trees are fed.”

He says growers must remember trees grown in conventional systems are used to consistent nutrient availability.

“The soil has been farmed a certain way,” he says. “These trees are used to being fed intensively in that conventional system.”

And organic fertilizers don’t always behave the same way.

“The organic fertilizers just don’t work as well,” Wylie says. “So you have to be careful.”

Introducing Algae Into the System

As Wylie searched for ways to accelerate soil improvement, one newer tool caught his attention: microalgae.

The technology comes from soil health company MyLand, which produces living algae on farms and distributes it through irrigation systems.

“We’re probably in our fourth or fifth season,” Wylie says.

The idea behind the system is relatively simple. Rather than applying microbes directly to the soil, the system produces algae that help stimulate microbial activity already present in the soil ecosystem.

Jeff Tuel says the technology centers around specialized tanks designed to grow algae on the farm itself.

“We call these APVs, algae producing vessels,” Tuel says. “And essentially, the sole purpose is to grow algae here.”

Water from the farm is stored inside the vessels, where conditions are controlled to encourage rapid algae growth.

“So for all intents and purposes, this is kind of like the algae producing container,” Tuel says.

From there, the algae are delivered through irrigation systems already used on the farm.

“And we try to keep that holding tank to a level where if the irrigator is irrigating a 12-hour set, 24, 36,” Tuel says. “Our main objective is for them to never run dry of algae.”

Production is adjusted to match the grower’s irrigation schedule.

“We harvest according to the grower’s irrigation schedule,” he says.

Another important step happens before the system is even installed. MyLand scientists collect algae samples from the farm itself, identifying native strains that are already adapted to the environment.

“The reason native is important is because it’s used to the pH, it’s used to the droughts, the floods, everything Mother Nature’s thrown at it,” Tuel says.

Because those organisms already exist in the local ecosystem, they are more likely to survive once applied to the soil.

“Its odds of surviving and actually making an impact in that ecosystem are far greater,” he says.

Microalgae also sits at the base of the soil’s microbial food web.

“Microalgae is actually the base of the microbial food chain,” Tuel says. “All the bugs and beneficials in the soil are feeding off of it.”

Rather than introducing microbes, the strategy is to stimulate the microbes already present.

“I like to say instead of a bug-and-a-jug approach, we are ringing the dinner bell for the microbes,” Tuel says. “It’s kind of an all-you-can-eat buffet for microbes to get them moving and active.”

Tackling Difficult Soils

For Wylie, improving soil biology could help solve one of the Central Valley’s most persistent challenges: poor soil structure.

Many orchard soils in the region contain very low levels of organic matter, which limits their ability to hold water and maintain structure through the growing season.

“We have about 0.5% soil organic matter,” Wylie says. “Our water holding capacity is very low.”

That lack of organic matter can cause irrigation problems later in the summer.

“A lot of times these soils as we’re irrigating during the season will lock up,” he says.

Early in the season, irrigation water infiltrates the soil fairly easily.

“You start with very good water infiltration in April, May, June,” Wylie says.

But conditions change as the summer progresses.

“By the time you get to July, August, when you really need it, it’s very difficult to push water down in the soil,” he says.

For farmers trying to manage water carefully in California’s dry climate, that creates a major challenge.

“These soils are not very functional for us as farmers,” Wylie says.

Tuel says stimulating microbial activity can gradually improve those conditions.

“When you get those microbes to start moving and firing, you’re going to start to build soil aggregate,” he says.

Better aggregation can help water move through the soil while also improving nutrient availability.

“If it’s a high-salt ground, we can start to leach out some of those salts,” Tuel says.

Algae may also influence soil chemistry.

“Algae is also going to help regulate the pH in the soil so we can start to free up some locked-up nutrients,” he says.

Thinking Long-Term

While installing an on-farm algae system requires investment, Wylie says he sees it as part of a long-term strategy for improving soil performance.

“In a biological system like MyLand, it’s about the same cost as a soil amendment program out here, depending on how much acreage you’re using,” Wylie says.

The difference is the system focuses on building biological activity rather than simply adding nutrients.

“But it’s a long-term solution,” he says. “It’s not going to work overnight.”

Instead, the goal is to strengthen the soil’s microbiome so it can better buffer environmental stresses.

“It’s actually creating a buffer by just supercharging the microbiome that’s in the soil,” Wylie says.

That biological activity may help address several common soil issues in California orchards.

“Everything feeds on it,” he says. “It’s overcoming high salt, high chlorides.”

Even trace mineral challenges may improve over time.

“In some cases in California, we have very high boron in some areas,” Wylie says.

He believes increased biological activity may help mitigate those problems faster than traditional soil-building methods alone.

“Microalgae being put into the system can actually overcome those salts that might take 10 or 15 years of compost and cover crops,” he says. “You can accomplish in a few years by using MyLand.”

The Pressure on California Farmers

The search for new tools is happening at a time when farming in California is becoming increasingly expensive.

Data from USDA shows the state continues to rank as the most expensive place in the country to grow crops, driven by high labor, energy and input costs.

Those economic pressures are compounded by growing regulatory expectations.

Wylie believes California farmers are already facing some of the strictest scrutiny in global agriculture.

“I think the state’s already looking at it very closely,” he says. “I think they’re going to put more pressure on farmers in California.”

Compared with other agricultural regions, he says California producers are operating under unique constraints.

“Other than the European Union, there is no one in the world that’s under as much pressure as a California farmer to change the way we do things,” Wylie says.

Because of that, he believes farmers must take the lead in finding workable solutions.

“We need to figure this out,” he says. “And I want to figure it out before the government gets involved and tries to tell me how to do it.”

Government incentive programs exist, but Wylie believes the real challenge is making soil health practices economically viable.

“They can offer me some incentives,” he says. “We have healthy soils out here. They give you a little compost and cover crop seed.”

Ultimately, though, growers need systems that work on their own.

“We need to figure this out and we need to make it economical and profitable before the state comes in,” Wylie says.

Because once regulations remove certain tools, farmers may have little room to adapt.

“Now you’re forced to figure it out with your back against the wall,” he says. “We don’t want that.”

For Wylie, the answer may lie beneath the soil surface where billions of microbes, fueled by algae, could quietly reshape how California farms grow their crops. And by doing so now, Wylie hopes he’s able to find ways to continue to grow productive crops in California, despite increased regulations.

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