A drop in organic milk prices brought down total agricultural gross values nearly 10 percent in Marin last year, according to the county’s annual livestock and crop report released last week.

“The organic market is being congested, for lack of a better term,” Stacy Carlsen, Marin’s agricultural commissioner who presented the report to the Board of Supervisors for approval last Tuesday, said. “I saw this coming—virtually all of the dairies in Marin, save two or…