Why worms (and microbes) are catching on as a manure pollution solution
Anthony Agueda employs vermifiltration systems to reduce manure pollution at his California dairy farm, using biofilters with wood chips and crushed river rock to host earthworms, thereby decreasing methane and nitrous oxide emissions. The system, adopted by Alberto Dairy, aims to address environmental impacts, with California investing over a billion dollars in manure management programs. However, vermifiltration has mixed results in methane reduction, and alternative methods like solid separation and microbial treatments are considered for lower costs and simpler implementation.
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