Farmers and others in Iowa agriculture must work together and overcome internal differences, apathy and pessimism to confront the growing legal, regulatory, cultural and economic challenges that agriculture faces today, according to Craig Hill, Iowa Farm Bureau Federation (IFBF) president.

Otherwise, farmers will be div­ided and bullied by activists, regulators and others who are opposed to today’s farming and want to push their own agendas on agriculture in Iowa, Hill told delegates in...