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Reducing weed seed pressure with the false seedbed technique (OK-Net Arable Practice Abstract)

{Tool} Reducing weed seed pressure with the false seedbed technique (OK-Net Arable Practice Abstract). [Reduzieren des Unkrautdrucks mit der Falschen-Saatbeetbereitung.] Creator(s): Dierauer, Hansueli; Conder, Malgorzarta and Weidmann, Gilles. Issuing Organisation(s): FiBL - Research Institute of Organic Agriculture. OK-Net Arable Practice Abstract, no. 007. (2017)

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Document available online at: http://Orgprints.org/31022


Summary

The false seedbed technique reduces the weed seed bank in the topsoil and, as a result, significantly reduces competition of annual weeds in the succeeding crop.
• Prepare a regular seedbed 2 to 4 weeks before the planned seeding date of the next crop.
• Let the weeds germinate and grow to the 2- to 4-leaf stage, the most effective stage for weed control.
• Uproot the weeds to a depth of 3 to 5 cm using a harrow comb or a flexible or chain harrow.
• If (a) weed density is high, (b) if you have 7 to 10 days available for sowing the crop, or if (c) weed competition in the following crop is very critical, repeat the procedure a second time before sowing the crop as usual.
Notes
• Weed seed germination is highest in humid soil with a fine tilth. If the seedbed is too dry or cloddy, germination is reduced and the impact of the method is limited.
• Effectiveness of the method can be limited at soil temperatures below 10 °C.
• Preferably use a power take-off or friction-driven machines to avoid soil structure damages.


Summary translation

Die falsche Saatbettbereitung reduziert den Samenvorrat an einjähriger Unkräuter im Oberboden und, als Folge davon, den Konkurrenzdruck in der Folgekultur.
• 2-4 Wochen vor dem geplanten Saattermin der nächsten Kultur ein gleichmässiges Saatbett herrichten.
• Das Unkraut bis zum 2- bis 4-Blattstadium wachsen lassen (wirksamstes Stadium zur Regulierung).
• Das Unkraut mit dem Striegel oder einer Egge in einer Tiefe von 3-5 cm entwurzeln.
• Bei (a) hoher Unkrautdichte, (b) einer Zeitreserve von 7-10 Tagen oder (c) einer besonders unkrautempfindlichen nächsten Kultur das Vorgehen wiederholen.
Hinweis
• Die Unkrautsamen keimen am besten in feuchtem Boden mit einer feinen Krume. In einem trockenen oder zu groben Saatbett sind die Keimungsrate und die Wirkung der Methode entsprechend gering.
• Auch tiefe Bodentemperaturen unter 10 °C reduzieren den Erfolg der Massnahme.
• Auf zapfwellengetriebene Geräte sollte möglichst verzichtet werden, um Schäden an der Bodenstruktur zu vermeiden.

EPrint Type:Practice tool
What problem does the tool address?:Annual crops are especially sensitive to weed pressure during early growth. Intensive weed pressure limits crop growth through competition for light, nutrients and water.
What solution does the tool offer?:Grow the weeds, and then grow the crop! The false seedbed tech-nique consists of preparing a regular seedbed (early) and then – in-stead of sowing the crop directly – you allow the weeds to germinate and then control them repeatedly before planting or sowing the ac-tual crop.
Country:Switzerland
Type of Practice Tool:Practice abstracts
Theme:Weed management
Keywords:weed management
Keywords:weed management, arable farming
Agrovoc keywords:
Language
Value
URI
English
arable farming
http://aims.fao.org/aos/agrovoc/c_36528
English
weed control
http://aims.fao.org/aos/agrovoc/c_8345
Subjects: Crop husbandry > Weed management
Research affiliation: European Union > Horizon 2020 > OK-Net Arable > OK-Net-Arable Tools
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Advisory Service
European Union > Horizon 2020 > OK-Net Arable
H2020 or FP7 Grant Agreement Number:652654
Related Links:https://organic-farmknowledge.org/tool/31022
Project ID:oknet
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:31022
Deposited On:16 Jan 2017 15:05
Last Modified:10 Sep 2020 10:13
Document Language:English, German/Deutsch
Status:Published

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