Boston-Converted Organics Inc., which produces organic soil amendments and fertilizer from a proprietary thermal process, has added two more companies to its nationwide network of distributors. Company officials said Ballard Sports, a division of Ballard Construction Inc., which specializes in athletic field construction, sports turf maintenance, and athletic field renovation, and Liberty Acres Fertilizer Corp., a division of B.B. Hobbs Co. Inc., a single-source fertilizer company serving multiple industries throughout the Southeast, have joined the distribution team, which represents a variety of industries in the fields of professional turf, crop production, and residential lawn care. Marketing Vice President David Flannery described the two companies as “valuable additions due to their client base, industry experience, and geographic locations.”