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.
The 2014 projected national average corn yield would be well above recent U.S. corn yields of 158.8 bushels per acre in 2013, 123.4 bushels per acre in 2012, and 147.2 bushels per acre in 2011. The previous record U.S. average corn yield was 164.7 bushels per acre in 2009. The report is now estimating total soybean production in 2014 at a record level of 3.91 billion bushels, which compares to a soybean production level of 3.15 billion bushels in 2013.