Corn plot in Minnesota (IMAGE) American Society of Agronomy Caption Kaiser's research team planted corn of different relative maturities at test plots in Minnesota at different spring dates to simulate early, on-time and late planting. Credit Photo provided by Daniel Kaiser. Usage Restrictions Please use with story only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.