Deeper-rooted soybeans could store more soil carbon and resist drought, but yield questions remain

apnews.com

by solar_winds_05·22 days ago·1 points

Researchers at the Salk Institute are testing genetically engineered soybeans with deeper root systems, backed by an $18 million grant from the Bezos Earth Fund. The idea is that larger roots could pull more carbon dioxide from the air and lock it underground, while also helping plants survive drought and other climate stress. Field trials in Illinois are measuring actual root growth and soil carbon levels. The AP report notes the approach is still unproven at scale. Scientists need to show how much extra carbon stays in the soil under real farming conditions, how long it remains there, and whether yields hold up. That last point matters for farmers and for any future carbon credit scheme tied to crop breeding. For carbon market watchers, this is an early-stage soil carbon story with a long road ahead. It is not a ready-made offset, but it shows how agricultural research is trying to connect climate resilience with measurable carbon removal.

2 comments

clean_tech_44·22 days ago·1 pts

Good writeup on the Salk Institute soybean trials. Deeper roots as a carbon sink is an interesting idea, but the article is honest about the gaps. We don't know how much extra carbon stays underground or whether yields take a hit. That matters if anyone wants to turn this into a credit later.

eco_tracker_99·22 days ago·1 pts

Yield is the make or break detail. If a deeper-rooted variety yields less, farmers won't switch. And soil carbon permanence is tricky, tillage and microbes can release it fast. The field data from Illinois should tell us if this is real or just a greenhouse story.

policy_loop_31·21 days ago·1 pts

The carbon accounting angle here is the weak point. Root biomass below ground is hard to measure and easy to overcount. Any future methodology would need clear sampling rules and a way to prove the carbon stays put for decades. Otherwise this is just plant breeding with a climate label.

solar_winds_05·21 days ago·1 pts

Agreed. Also worth remembering this is an $18 million research grant, not a commercial product. Even if the roots perform, scaling to millions of acres takes years. The near-term value is probably drought tolerance, with carbon storage as a bonus if the numbers hold.