Researchers at the Salk Institute are engineering deeper-rooted soybeans that could reduce farmers' input costs while addressing climate resilience, backed by an $18 million grant from the Bezos Earth Fund. The work represents a market-driven approach to agricultural challenges: using genetic technology to enhance crop performance rather than relying on government mandates or subsidies.
At a research field in Urbana, Illinois, research scientist Ashish Rajurkar demonstrated the physical difference. He lifted a clod of soil tangled around one of the new soybean plants, revealing roots that slope straight down instead of spreading sideways like conventional soybeans. This structural change could reshape how farmers manage water, fertility, and soil carbon—without requiring new equipment or land use patterns.
Wolfgang Busch, director of the Salk Institute's Harnessing Plants Initiative, framed the urgency in practical terms: "It will become harder to grow enough food for enough people." The deeper root systems being tested are designed to help crops withstand drought while drawing more carbon from the atmosphere and storing it underground, potentially reducing farmers' vulnerability to weather volatility.
The Science and Market Opportunity
Salk scientists spent six years cataloging genetic information from hundreds of varieties of common row crops like soybeans and sorghum from around the world. Todd Michael, a research professor at the institute, explained the approach: "We wanted to leverage the natural variation of a given plant." After identifying 347 genes related to carbon storage and root growth, the team used DNA editing to create plants with roots that penetrate deeper into soil.
The researchers are pursuing multiple advantages simultaneously. Deeper roots allow plants to access water below the top soil layer during droughts. Carbon stored farther underground may be less vulnerable to release when farmers till their fields. Larger root systems mean more carbon-rich plant material remains in soil. The team is also increasing suberin, a cork-like substance in roots that decomposes more slowly than other plant tissues, extending carbon storage duration.
A secondary benefit could reshape farm economics: researchers hypothesize that steeper root systems might allow farmers to plant more crops in a smaller area, potentially increasing yield per acre. The plants may also absorb more nitrogen and fertilizer runoff, reducing the agricultural pollution that causes algae blooms and dead zones in waterways—a cost currently borne by downstream communities and ecosystems.
Testing and Realistic Timelines
At the University of Illinois Urbana-Champaign field site, established 18 days ago on September 1, researchers are growing deep-rooted soybeans under a controllable canopy that simulates drought conditions. Underground cameras and sensing equipment track carbon content and root growth in real time. Additional field sites operate in Missouri, Kansas, and Iowa.
Busch acknowledged the gap between laboratory promise and field reality. "We don't really know what the real trade-off is," he said. "You have to test it in the field." Initial results are expected this fall, though the path from promising data to farmer adoption remains uncertain.
Historically, market forces have moved quickly when incentives align. Busch noted that herbicide-resistant crops spread through farmers' fields in less than a decade once introduced. "If you have a technology that is interesting to a big seed company, it will go out there very, very fast," he said. Yet adoption depends on more than agronomic performance.
Andrew Bovarnik, head of global food systems for the United Nations Development Programme, cautioned that new crop technologies often move slower than researchers anticipate. Farmers' decisions are shaped by seed companies, commodity buyers, government subsidies, trade rules, and access to financing. "There's a sense that if you innovate and come up with a good idea, then boom, it can happen," Bovarnik said. "But it tends not to. We are stuck in a system that is pretty entrenched."
Farmers are naturally reluctant to risk unfamiliar crops without evidence they won't bring unintended consequences—greater disease susceptibility, heat stress, or other problems. Bovarnik noted that subsidies and other incentives could accelerate adoption, but even successful deeper-rooted crops will depend on broader agricultural decisions about land use, soil management, and crop purpose.
The Scale Question
Based on lab results, Salk researchers estimate that one hectare (2.5 acres) of deeper- and bigger-rooted soybean could store an additional metric ton of carbon dioxide per year. A 2025 study co-authored by Busch modeled that about a gigaton of carbon dioxide per year could be removed from the atmosphere by 2040 if deeper-rooted soybean, corn, cotton, and canola crops were adopted in countries where genetically-modified crops are already grown.
The appeal of this approach is that deeper-rooted crops could be planted on current farm fields using existing agricultural infrastructure and land—no new government programs, no land conversion, no disruption to supply chains. Farmers would adopt the technology if it improves their margins and resilience.
Busch emphasized the time pressure. "It's a race against time," he said of climate change. "We are racing against limiting the damage and crossing tipping points, where it's much harder to return from." Yet he also acknowledged that crop development takes years and that ambitious solutions require sustained funding—a reality that shapes how quickly markets can respond.
Why This Matters:
This research represents innovation operating within market mechanisms rather than through regulatory mandates or government-directed agricultural transformation. If successful, deeper-rooted crops could reduce farmers' input costs, improve drought resilience, and increase yields—all without requiring new subsidies, land-use restrictions, or compliance bureaucracies. The technology leverages existing agricultural infrastructure and seed distribution networks, meaning adoption could happen through normal commercial channels if the economics work. However, the gap between laboratory results and widespread farmer adoption remains substantial, shaped by entrenched market structures, regulatory frameworks, and legitimate farmer caution about unproven technologies. Success depends on whether the private seed industry finds the innovation commercially attractive—not on government intervention. The stakes are significant: if adoption accelerates globally by 2040, the carbon storage potential could be substantial, but only if market conditions and farmer incentives align.