https://www.eurekalert.org/news-releases/1121458
"A 14-year field study has provided compelling evidence that biochar can
simultaneously reduce heavy metal risks in agricultural soils while enhancing
carbon storage, offering a powerful strategy for sustainable farming and
climate mitigation.
“Managing contaminated soils while also addressing climate change is a major
global challenge,” said one of the study’s lead authors. “Our long-term results
show that biochar can achieve both goals at the same time, making it a highly
promising solution for modern agriculture.”
Heavy metal contamination, including elements such as cadmium, lead, and zinc,
poses serious threats to food safety and human health worldwide. Traditional
soil management approaches often focus on either pollution control or carbon
sequestration, but rarely both. This study bridges that gap by examining how
biochar performs over more than a decade under real field conditions.
The researchers conducted a 14-year experiment in agricultural soils, comparing
high and low application rates of biochar with conventional straw amendments.
They found that high-dose biochar significantly reduced the bioavailability of
heavy metals by up to 91 percent, meaning that fewer toxic metals were
available for plant uptake. In contrast, straw treatments showed limited
effectiveness and in some cases even increased metal mobility.
Beyond reducing toxicity, biochar also improved soil carbon storage. The
material, produced from biomass under controlled heating, contains stable
carbon structures that resist decomposition. As a result, soils treated with
biochar accumulated more organic carbon over time, contributing to long-term
carbon sequestration."
Via Susan ****
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
