Iowa, besieged by hot, dry, windy weather, is fast losing its luster as the U.S. corn belt's garden spot. With forecasts for more punishing weather in the next 10 days, agronomists are seeing signs of distress in Iowa fields - hard-baked, cracking soil and curling corn leaves. "We need some good rains here, in pretty short order," said Rich Hanson, agronomist with West Bend Elevator Co.