relation: https://orgprints.org/id/eprint/15776/ title: Repeated surveys in Finland follow the changes of weed flora in spring cereal fields creator: Salonen, Jukka creator: Hyvönen, Terho subject: Weed management description: Typically, as observed in 1997-1999, the average weed species number was about 25 in organically farmed field and some 10 species less in conventionally farmed field. In this respect, organic farming clearly promotes biodiversity at the farm scale but not so much at the national scale as the field area of organic cropping is only about 6 % of the total Finnish field area. publisher: European Weed Research Society date: 2009 type: Conference paper, poster, etc. type: NonPeerReviewed format: application/pdf language: en identifier: /id/eprint/15776/1/ewrs_biodiv2.pdf identifier: Salonen, Jukka and Hyvönen, Terho (2009) Repeated surveys in Finland follow the changes of weed flora in spring cereal fields. In: Proceedings of the workshop, European Weed Research Society, p. 38.