Faba Bean Cut for Green Manure in Field (image) American Society of Agronomy Share Print E-Mail Caption Right, faba bean was cut for 'green manure' just after the flowering stage. The remaining plants cover the soil, add nitrogen and other nutrients, and improve soil conditions. The plants on the left were allowed to grow to the dry bean stage, then harvested. Credit N. Lupawayi Usage Restrictions Please 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.