Delray Beach, FL, May 22, 2025 (GLOBE NEWSWIRE) — In an era where climate change mitigation has become imperative, agricultural practices that promote carbon sequestration while maintaining productivity stand at the forefront of sustainable development. Biofertilizers—living microbial products that enhance soil fertility—are emerging as powerful tools in this dual mission, offering significant carbon sequestration benefits while reducing dependency on conventional chemical fertilizers.
The Carbon Sequestration Mechanism of Biofertilizers
Biofertilizers, including plant growth-promoting rhizobacteria (PGPR), mycorrhizal fungi products, and cyanobacteria, contribute to carbon sequestration through multiple pathways. Unlike chemical fertilizers that temporarily boost plant growth but often degrade soil organic matter, biofertilizers enhance the soil’s natural capacity to capture and store carbon.
Microbial fertilizers work by stimulating the formation of soil aggregates that physically protect carbon compounds from decomposition. Agricultural probiotics present in biofertilizers produce glycoproteins like glomalin, which act as natural glues binding soil particles together while locking carbon into stable forms. This process can sequester carbon for decades to centuries, compared to the short-term carbon storage in plant biomass alone.
Phosphate solubilizing microorganisms, another important component of biofertilizers, not only make phosphorus available to plants but also contribute to increased root biomass, which translates to greater carbon deposition in deeper soil layers. This root-associated carbon is particularly resistant to decomposition, offering long-term sequestration potential.
Quantifying Carbon Sequestration Benefits
Recent research demonstrates that agricultural soils treated with biological soil amendments can sequester an additional 0.5-1.0 ton of carbon per hectare annually compared to conventionally managed soils. When implemented at scale, this represents a significant carbon sink that could offset substantial portions of agricultural emissions.
A notable example comes from long-term field trials where mycorrhizal inoculation increased soil organic carbon by 15-27% over five years. The carbon:nitrogen ratio improvements in these soils indicated not just carbon storage but enhanced soil health and resilience—highlighting the multifunctional benefits of sustainable nutrient management systems that incorporate biofertilizers.
Biofertilizer Market Growth Driven by Sustainability Demands
The global biofertilizers market is experiencing unprecedented growth, largely driven …