Coated Seeds (IMAGE) Penn State Caption Use of a class of insecticides, called neonicotinoids, increased dramatically in the mid-2000s and was driven almost entirely by the use of corn and soybean seeds treated with the pesticides. Image shows treated soybean seeds (blue), versus untreated soybean seeds at the top and treated corn seeds (red) versus untreated corn seeds at the bottom. Credit Ian Grettenberger, Penn State Usage Restrictions Non commercial use 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.