By Chuck Quirmbach | Wisconsin Public Radio Citizen groups are asking state health officials to block a plan to spray manure onto fields using overhead irrigators.
The use of rolling irrigation machines that usually spray water for spreading liquid manure on farm fields first triggered controversy about a year ago. The aerial spraying of manure continues on a few Wisconsin farms, but citizen groups want to stop a large farm near Algoma from using its new aerial spraying permit for a DNR-backed research effort.