https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12274753Edit ImageSaveSaveEditCropCustom TextCountry agent tests a plot of hybrid corn for yield. Grundy County, Iowa. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 913 px | 300 dpiLarge JPEG 3500 x 2663 px | 300 dpiBest Quality JPEG 13852 x 10538 px | 300 dpiTIFF 13852 x 10538 px | 300 dpi | 139.3 MBFree DownloadCountry agent tests a plot of hybrid corn for yield. Grundy County, Iowa. Sourced from the Library of Congress.More