title: Apparent N Balance in Organic and Conventional Low Input Cropping Systems creator: Boldrini, Arianna creator: Benincasa, Paolo creator: Tosti, Giacomo creator: Tei, Francesco creator: Guiducci, Marcello subject: Farm nutrient management description: The determination of nutrient surplus is one of the indicators of potential N losses from the agricultural system to the environment. An experiment was started in 1998 in Central Italy to evaluate the soil surface N balance of an organic and a conventional low input cropping system over a long term crop rotation. Results at the end of a 6-year crop rotation showed an estimated N surplus in organic system 1.3-2 times higher than in conventional system while N content in the top soil was not different in the two systems, so that organic system should have involved a higher N loss from that soil layer. date: 2007 type: Conference paper, poster, etc. type: NonPeerReviewed format: application/pdf identifier: http://orgprints.org/9885/1/Boldrini-etal-2007-apparent_n_balance.pdf identifier: Boldrini, Arianna; Benincasa, Paolo; Tosti, Giacomo; Tei, Francesco and Guiducci, Marcello (2007) Apparent N Balance in Organic and Conventional Low Input Cropping Systems. 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007. relation: http://orgprints.org/9885/