State agriculture and energy officials are working together in the event that there's high demand for liquid propane this harvest season. Iowa Propane Gas Association Executive Director Deb Grooms says customers were asked to top off their tanks this summer. She says farmers got the same message from Ag Secretary Bill Northey. She says "he actually sent out a letter to farm organizations back in July to remind producers to make sure their propane supplies for grain drying and livestock facilities were full going into the fall season." Governor Branstad declared an energy disaster last October when farmers throughout the Midwest used a record amount of the fuel to properly dry their corn so it could be stored without spoiling. That in turn depleted supplies for home owners who were forced to pay record prices.