Organic EprintsStickstoffausnutzung, Beikrautregulierung und Erträge unterschiedlicher BestellverfahrenThomasAnkenauthorWalterRichnerauthorPaulMäderauthorOttoSchmidauthorIn a field trial of several years duration, an organic cultivation technique (BIO) was compared to ploughing, shallow tillage and no tillage. In the case of BIO, soil tillage was accomplished both by ploughing (prior to maize) and by mulch seeding (prior to cereals). The maize yields of the various techniques showed no significant differences in the case of slurry application. BIO-wheat yielded slightly lower in certain years, a fact attributable to low plant density. Wide spacing between rows (25 cm) and hoeing of the cereals enabled mulch seeding without weed-regulation problems in the case of BIO. Where slurry fertiliser was applied, the apparent nitrogen utilisation of the plants – despite application via an umbilical-hose spreader – was low, with values of 30-70%. Clearly, significant unused potential lurks here. Soil tillage2009Conference paper, poster, etc.

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