TY  - CONF
ID  - orgprints9885
UR  - http://orgprints.org/9885/
A1  - Boldrini, Arianna
A1  - Benincasa, Paolo
A1  - Tosti, Giacomo
A1  - Tei, Francesco
A1  - Guiducci, Marcello
TI  - Apparent N Balance in Organic and Conventional Low Input Cropping Systems
Y1  - 2007///
N2  - 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.
AV  - public
KW  - nitrogen surplus
KW  -  nitrogen loss
KW  -  crop rotation
ER  -