Rapid and distinct responses of particulate and mineral-associated organic nitrogen to conservation tillage and cover crops

• Published in: Geoderma Vol. 359; p. 114001
• Main Authors: Jilling, Andrea, Kane, Daniel, Williams, Alwyn, Yannarell, Anthony C., Davis, Adam, Jordan, Nicholas R., Koide, Roger T., Mortensen, David A., Smith, Richard G., Snapp, Sieglinde S., Spokas, Kurt A., Stuart Grandy, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2020
• Subjects: Cover crops; field experimentation; Illinois; least squares; Michigan; Mineral-associated organic matter; mineralization; Nitrogen availability; nitrogen content; organic nitrogen; particle size; Particulate organic matter; Pennsylvania; plows; ridge tillage; rowcrops; rye; silt; silt fraction; soil organic carbon; Soil organic matter fractions; sonication; Tillage; Illinois; Michigan; Pennsylvania; Particulate organic matter; Cover crops; Mineral-associated organic matter; Nitrogen availability; Soil organic matter fractions; Tillage

[Display omitted] •SOM responded to tillage and cover crops, but patterns varied by site and fraction.•At low-SOM sites, particulate fractions responded most significantly to tillage.•At high-SOM sites, inclusion of cover crops increased silt and clay-associated SOM. Particulate organic matter (POM)...