Abstract: Development of Nitrogen Non-Responsive Soils in Long-Term Organic Systems. (ASA, CSSA and SSSA International Annual Meetings)

66-12 Development of Nitrogen Non-Responsive Soils in Long-Term Organic Systems.

Poster Number 243

See more from this Division: ASA Section: Agronomic Production Systems
See more from this Session: Organic Management Systems: II (Includes Graduate Student Competition)

Monday, November 3, 2014

Long Beach Convention Center, Exhibit Hall ABC

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Harry H. Schomberg, 10300 Baltimore Avenue, USDA-ARS, Beltsville, MD, John Spargo, Tower Road, Ag Analytical Services Lab, University Park, PA and Michel A. Cavigelli, Bldg 001 Rm 140, USDA-ARS, Beltsville, MD

Organic and non-organic treatments in the long-term farming systems project (FSP) at the USDA ARS research center in Beltsville, MD were evaluated for repsonse to N inputs over two years. In organic systems with long history of N input as both manure and legume little to no reponse was oobserved from N inputs compared to no N treatment.

THese results indicate that accumlation of organic N over many years can result in little to no need for additional inputs.

See more from this Division: ASA Section: Agronomic Production Systems
See more from this Session: Organic Management Systems: II (Includes Graduate Student Competition)

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