http://orgprints.org/9885/ Apparent N Balance in Organic and Conventional Low Input Cropping Systems Boldrini, Arianna Benincasa, Paolo Tosti, Giacomo Tei, Francesco Guiducci, Marcello Farm nutrient management 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. 2007 Conference paper, poster, etc. NonPeerReviewed application/pdf http://orgprints.org/9885/1/Boldrini-etal-2007-apparent_n_balance.pdf 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. http://orgprints.org/9885/http://orgprints.org/9885/1/