@inproceedings{orgprints3942,
          editor = {J He\ss and G Rahmann},
           title = {Verunkrautung in einer \"okologischen Fruchtfolge},
          author = {D. Atanassova and V. Koteva},
       publisher = {kassel university press GmbH, Kassel},
            year = {2005},
         journal = {Ende der Nische, Beitr\"age zur 8. Wissenschaftstagung \"Okologischer Landbau},
        keywords = {?kologischer Landbau, Unkr?uter, Unkraut, Verunkrautung, Beikraut, Ackerkulturen, Bulgarien},
             url = {http://orgprints.org/3942/},
        abstract = {Weed infestation was monitored in an organic crop rotation system in South Bulgaria. Best to cultivate before winter cereals was maize regarding weed infestation in our system. In spring chick-pea increasing Sinapis arvensis and Falopia convolvulus infestation was found, whereas the density of Alopecurus myosuroides and Avena spp. decreased. This is important for following winter cereals cultivation. }
}