Thatch in Living Mulch (image) American Society of Agronomy Share Print E-Mail Caption A significant thatch layer builds from the declining clover as the season progresses. The thatch decomposes and nitrogen becomes available for corn nutrition. Credit Nick Hill 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.