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Strategien der Unkrautregulierung in Zuckerrüben - Ergebnisse aus Anbauvergleichen

König, Dr. Hans-Peter and Koch, Dr. Heinz-Josef (2005) Strategien der Unkrautregulierung in Zuckerrüben - Ergebnisse aus Anbauvergleichen. [Strategies of weed control in sugar beet - results from on-farm trials.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

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Summary

In 2003 the effect of tillage timing (mouldboard ploughing in autumn or spring) and seeding time on weed density in sugar beet was examined in an on-farm trial near Göttingen. Weed density was highest (110 plants m-2) when sugar beets were sown early (7th April). Ploughing in autumn and late sowing (22nd April) led to the lowest weed density (15 plants m-2). 35 plants m-2 were found after ploughing in spring with late sowing. After early sowing, the weed population was dominated by Matricaria spp., while after late sowing Chenopodium album L. was the dominating species. Besides, late sowing resulted in yield losses compared to early sowing. In 2004 weed density was very low (Ø 15 plants m-2) and neither ploughing time nor harrowing pre- or post-emergence had an effect. This was due to the preceding grass-legume mixture and a very dry spring. Weed population was dominated (80-90 %) by C. album L. and volunteer plants from the preceding crop. Harrowing post emergence tended to reduce sugar beet density but still exceeded 80,000 plants ha-1.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Bodenbearbeitung; Striegel; Vorauflauf; Nachauflauf; Unkrautdichte
Subjects: Crop husbandry > Weed management
Research affiliation: International Conferences > 2005: Scientific Conference on Organic Agriculture
Related Links:http://www.ifz-goettingen.de
Deposited By: König, Dr. Hans-Peter
ID Code:3514
Deposited On:05 Mar 2005
Last Modified:12 Apr 2010 07:29
Document Language:German - Deutsch
Status:Published
Refereed:Peer-reviewed and accepted

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