Smart farming 1 (IMAGE) University of Texas at Austin Caption The system both senses nitrogen levels and captures nitrate before it escapes the soil, potentially polluting air and water. Credit The University of Texas at Austin Usage Restrictions N/A License Original 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.