From Minneapolis, at the Second International Conference on Pharmaceuticals and Endocrine Disrupting Chemicals in Water.
Livestock naturally excrete large amounts of estrogen and testosterone, hormones that can harm crops and wildlife when farmers use manure as fertilizer (SN: 7/15/95, p. 44). A study now shows that farmers can rid chicken manure of much of this unwanted hormonal baggage by composting the wastes.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.