Beyond the Hype: Where Biochar Really Works and Where It Doesn’t

What if biochar’s highest-impact, highest-return applications have been misunderstood?  Dr. Jim Ippolito explains the science and economics behind where biochar moves beyond the hype, and delivers real commercial and environmental value. 

When biochar first captured international attention in the mid-2000s, it was heralded by some as a silver bullet. Scientists, farmers, and policymakers alike imagined it as the ultimate solution: improving yields, building soil health, sequestering carbon and cleaning up pollution, all at once.

Nearly 20 years later, the evidence tells a more nuanced story. Biochar is not a universal fix. In fact, applying it across millions of acres of large-scale commodity agriculture often doesn’t make sense, economically or agronomically. But in other contexts, biochar is not only viable, it is uniquely effective.

As Dr. Jim Ippolito, Professor of Soil Science at The Ohio State University, puts it: “We need to be honest about where biochar belongs. The wrong promises hurt credibility. The right applications can be transformative.”

Why biochar struggles in big ag 

In theory, applying biochar to fields of corn, wheat, or soy should improve soil organic matter, retain nutrients and boost yields. In practice, results have been mixed at best.

One major barrier is economics. Adding even a modest 1-2 dry tons of biochar per acre across 30,000 acres, the scale of many U.S. commodity farms, is prohibitively expensive. Even with declining production costs, farmers simply cannot justify the upfront investment when synthetic fertilizers remain cheap and provide immediate, visible yield responses.

The second barrier is timing. Soil health benefits from biochar, such as improved organic matter or microbial activity, often take years to materialize. Most growers cannot afford to wait multiple seasons for a return on investment.

“Big ag wants instant payback,” Jim says. “But soil systems don’t work that way. And biochar certainly doesn’t.”

Where biochar shines

The fact that biochar may not be suited to broad-acre commodity farming doesn’t diminish its potential. Instead, it points us toward more strategic, high-value applications where the economics and science align.

Specialty crops and horticulture:

High-value perennial crops, like vineyards, orchards, or nursery plants offer larger economic margins that can absorb biochar’s upfront costs. In water-limited regions such as California, vineyard trials have shown that biochar additions can improve water holding capacity and boost yields, delivering an ROI after the very first harvest.

Compost integration:

Blending biochar with compost creates a “best of both worlds” amendment: the quick nutrient release of compost with the long-term stability of biochar. Growers using these blends report improved soil fertility, reduced odors and enhanced greenhouse gas mitigation during the composting process.

Environmental remediation:

Biochar’s sorptive properties make it highly effective in capturing heavy metals and persistent contaminants like PFAS. In mine reclamation sites in Oregon and Missouri, biochar-amendment mixes have reduced metal bioavailability and jump-started plant regrowth on severely degraded soils.

Livestock systems:

Biochar can be applied to bedding or manure lagoons to reduce odors, capture excess nutrients, and lower greenhouse gas emissions. These benefits extend beyond the farm gate, improving environmental compliance and community relations.

Why managing expectations matter

Part of biochar’s early credibility problem came from overselling. In the late 2000s, a wave of studies focused on repeating basic crop trials with biochar, leading to excitement but also fatigue. “The literature became saturated with studies that didn’t add much new knowledge,” Jim recalls. “We promised too much, too soon.”

That hype cycle mirrors what we’re seeing today with artificial intelligence or other new technologies: inflated expectations, a crash when reality sets in and then hopefully a more stable rebuilding based on real, proven value.

Biochar is now in that rebuilding phase. Its role is clearer, more targeted and more defensible.

Scaling Responsibly

For biochar to move beyond niche adoption, three things must happen, 

1. Standardization and testing.  Reliable standards for biochar properties are essential to build trust with regulators and end users. Screening tools that predict metal sorption or nutrient release can help identify the right biochar for the right application.
2. Secondly, collaboration across silos.  Too often, academia works in 10-by-10-foot plots while industry struggles to deploy at scale. Partnerships between the two can bridge that gap, taking lessons from controlled trials and applying them to real landscapes.
3. Local supply chains.  Transport costs can double the price of biochar. Building distributed, local production hubs that use regional waste streams will reduce freight costs and ensure that carbon-negative benefits are not lost to long-haul trucking.

The Road Ahead

So, should biochar be applied across millions of acres of cornfields? Probably not. Should it be deployed in vineyards, remediation sites, livestock systems and specialty markets where its unique properties add measurable value? Absolutely.

“Biochar is a tool,” Jim concludes. “But it’s not the only tool. When we use it in the right place, for the right reasons, it can be incredibly powerful. The trick is knowing when to reach for it.”

About the Authors

Dr. Jim Ippolito is  the Rattan Lal Endowed Professor of Soil Health and Fertility at The Ohio State University with expertise in soil chemistry, mine reclamation, and environmental remediation. He has published extensively on biochar’s role in heavy metal sequestration and is currently advancing research into PFAS-contaminated soils.

Myno Carbon is a U.S.-based company pioneering Biochar 3.0 – engineered formulations for carbon-negative remediation and infrastructure. Learn more at mynocarbon.com.

Blog Highlights

Where does biochar deliver the strongest return on investment?
Biochar performs best where margins are higher and outcomes are measurable—such as specialty crops (e.g., vineyards), compost integration, environmental remediation, and livestock systems. In these contexts, benefits like improved yields, contaminant capture, and emissions reduction can translate into near-term economic value.

In targeted, high-value applications.
Biochar performs best where margins are higher and outcomes are measurable—such as specialty crops (e.g., vineyards), compost integration, environmental remediation, and livestock systems. In these contexts, benefits like improved yields, contaminant capture, and emissions reduction can translate into near-term economic value.

Why is there skepticism on biochar’s efficacy?
Because it was oversold as a universal solution. Early hype positioned biochar as a “silver bullet,” leading to unrealistic expectations and inconsistent results. As Dr. Jim Ippolito emphasizes, the real opportunity lies in applying biochar where the science and economics align—not forcing it into unsuitable use cases.

What needs to happen for biochar to scale effectively with strong returns?
More precision, not more promotion. Scaling biochar requires standardized testing, stronger collaboration between research and industry, and localized production to reduce costs. Most importantly, it demands disciplined deployment—focusing on the right applications where biochar’s performance creates both commercial returns and environmental impact.