Oct 1 (Reuters) - U.S. tractor maker Deere & Co (DE.N) and the United Auto Workers (UAW) union on Friday agreed on a new six-year labor contract that will be subject to a vote by the company workers. The tentative deal will cover about 10,100 production and maintenance employees across 12 facilities in Iowa, Illinois, and Kansas. The agreement contains significant economic gains and offers highest quality healthcare benefits in the industry, UAW Vice President Chuck Browning said in a separate statement. The union will release details of the deal after members at Deere locations have reviewed the terms on Oct. 10.