While there are restrictions on use of raw manure in U.S. organic farming because of concern over bacteria, no such rules are in place regarding antibiotics or hormones. (scientificamerican.com)
It's appropriate to have restrictions on the use of raw manure, to have monitoring of composting processes to make sure they're effective, and to restrict the use of water that may contain treated sewage.» (discovermagazine.com)
«There is no prohibition to using raw manure on crops, so long as the crops aren't organic. (discovermagazine.com)