Combined pig manure and
Sha Y, Bu Y, Jin J, Guo J, Yu L
Phytoremediation
Soil near old tanneries, industrial sites, or heavily fertilized farms can carry chromium contamination that quietly moves into food crops — this research points toward a low-cost, compost-style fix that farmers and community gardeners could realistically apply.
Chromium is a toxic metal that builds up in farm soils and makes them unsafe for growing food. Scientists found that adding pig manure — and likely another organic material — to contaminated soil makes it easier for plants to absorb and remove the chromium naturally, a process called phytoextraction. By improving both the soil and plant health at once, this approach could help restore polluted land without expensive industrial cleanup.
Key Findings
Chromium contamination in agricultural soils limits both safe food production and plant growth, making cleanup difficult
Pig manure combined with a co-amendment improved chromium availability to plants, overcoming a key phytoextraction bottleneck
The combined treatment enhanced plant growth, amplifying the total chromium removal potential from contaminated soil
chevron_right Technical Summary
Combining pig manure with another soil amendment helps plants pull toxic chromium out of contaminated agricultural soil more effectively, addressing a major barrier to cleaning up polluted farmland through phytoextraction.
Abstract Preview
Chromium (Cr) contamination constrains the safe use of agricultural soils, and phytoextraction is often limited by low Cr phytoavailability and poor plant growth. Pig manure (PM) and
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