It usually involves walking on a treadmill or pedaling a stationary bike at increasing levels of difficulty, while your electrocardiogram, heart rate, and blood pressure are monitored. Your doctor uses the stress test to: Determine if there is adequate blood flow to your heart during increasing levels of activity.
University of Illinois February 2018 This publication presents revenues and costs for producing corn, soybeans, wheat, and double-crop soybeans in three regions of Illinois: northern, central, and southern Illinois. Central Illinois is further divided into categories for high-productivity farmland and low-productivity farmland. Divisions between high and low farmland productivity are made based on soil productivity ratings. Generally, farms with higher soil productivity ratings have higher yields. Between 2011 and 2016, corn yields on high productivity farmland averaged 192 bushels per acre while corn yields on low productivity farmland averaged 179 bushels. This publication includes ten tables: 1. Corn Revenue and Costs, Northern Illinois 2. Soybean Revenue and Costs, Northern Illinois 3. Corn Revenue and Costs, Central Illinois with High Productivity Farmland 4.
Iowa's average corn yield was 166 bu/acre in 2006, which is just slightly above the 30-year trend line. Our highest average yield was 181 bu/acre in 2004. Iowa is increasing yield at approximately 2 bushels per acre per year; more than 60 years will be necessary to have a state average of 300 bu/acre.any growers are producing yields over 300 bu/acre every year. Some of these producers are represented in the National Corn Growers Yield Contest every year. Contest winners from across the country typically produce between 250 to 350 bushels per acre per year.