Proso (image) American Society of Agronomy Share Print E-Mail Caption Proso millet growing in western Nebraska, which is believed to have been one of the earliest domesticated crops. It's grown in the developing world as a food source and in the US and Europe for forage and bird seed. Credit Santosh Rajput Usage Restrictions Use with story only. Share Print E-Mail 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.