Nitrogen supply for winter oilseed rape (OK-Net Arable Practice Abstract)

{Tool} Nitrogen supply for winter oilseed rape (OK-Net Arable Practice Abstract). [Stickstoffversorgung im Winterrapsanbau.] Creator(s): Daniel, Claudia; Dierauer, Hansueli; Clerc, Maurice; Conder, Malgorzarta and Weidmann, Gilles. Issuing Organisation(s): FiBL - Research Institute of Organic Agriculture. OK-Net Arable Practice Abstract, no. 009. (2017)

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Document available online at: https://orgprints.org/31024/

Summary in the original language of the document

Optimal fertilisation ensures that the current rapeseed varieties and reach their full yield potential.
Practical recommendation
• In conventional cultivation, the nitrogen uptake of winter oilseed rape amounts to 140 kg N per ha for a yield expectation of 35 dt per ha. In organic agriculture, about 100 kg suffice for a yield expectation of 20-25 dt.
• The ideal time for cultivating oilseed rape is after grass-clover or legumes. After grains, apply about 30 tonnes per ha of manure or manure compost before cultivating rapeseed.
• In dry conditions in spring, an early single application of nitrogen is preferable to two smaller applications. In the case of slurry with a low N content, two applications are often required because maximum of 40 m3 of slurry can be applied at once. Regularly analyse the N content of slurry (regular content: 1 kg of N per m3 of slurry or tonne of manure, respectively; range: 0, 3 kg N per m3 for cow slurry to 3 kg N per m3 for pig slurry). The N contents of commercial fertiliser and liquid digestate are disclosed by the suppliers.
• On farms without livestock, one dose of organic commercial fertiliser is applied in early spring.

Summary translation

Eine optimale Düngung stellt sicher, dass die heutigen Rapssorten ihr Ertragspotenzial entfalten können.
Vorgehen
• Im konventionellen Anbau liegt der N-Bedarf von Winterraps bei einer Ertragserwartung von 35 dt/ha bei 140 kg N/ha. Im Bioanbau reichen bei einer Ertragserwartung von 20-25 dt/ha 100 kg N/ha aus.
• Raps idealerweise nach Kleegras oder Leguminosen anbauen. Bei Anbau nach Getreide vor der Rapssaat etwa 30 t/ha Mist oder Mistkompost ausbringen.
• Bei trockenen Verhältnissen im Frühjahr den Stickstoff besser in einer einzigen, frühen Gabe als in zwei kleineren Gaben verabreichen. Bei Gülle mit einem geringen N-Gehalt sind meist zwei Gaben nötig, da pro Gabe maximal 40 m3 Gülle ausgebracht werden können. Den N-Gehalt der Gülle regelmässig analysieren lassen (Normalgehalt: 1 kg N pro m3 Gülle bzw. t Mist; Spannbreite: 0,3 kg N/m3 bei Rinder-Laufstallgülle bis 3 kg N/m3 bei Schweinegülle). Die N-Gehalte von Handelsdüngern und Presswasser werden vom Lieferanten mitgeteilt.
• In viehlosen Betrieben wird mit einer Gabe organischem Handelsdünger im sehr frühen Frühjahr gedüngt.

EPrint Type:	Practice tool
What problem does the tool address?:	Modern varieties of winter rapeseed require a lot of nitrogen in early spring. In cool, moist and dry soils, the N mineralisation can be inhibited, which leads to an insufficient N supply and yield losses.
What solution does the tool offer?:	Fast releasing fertilizer application in autumn and spring can perfectly complement the basic fertilisation (applied via crop rotation and manure before sowing) and prevent a lack of nitrogen in spring.
Country:	Switzerland
Type of Practice Tool:	Practice abstracts
Location:	Areas with winter oilseed rape cultivation
Theme:	Nutrient management
Keywords:	arable farming, crop species, nutrient management
Keywords:	arable farming, crop species, nutrient management
Agrovoc keywords:	Language Value URI English arable farming http://aims.fao.org/aos/agrovoc/c_36528 English crops http://aims.fao.org/aos/agrovoc/c_1972 English nutrient management http://aims.fao.org/aos/agrovoc/c_330697 English oil crops http://aims.fao.org/aos/agrovoc/c_5328
Subjects:	Crop husbandry > Production systems > Cereals, pulses and oilseeds Crop husbandry > Composting and manuring Farming Systems > Farm nutrient management
Research affiliation:	European Union > Horizon 2020 > OK-Net Arable > OK-Net-Arable Tools Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Knowledge exchange > Advice European Union > Horizon 2020 > OK-Net Arable European Union > Organic Farm Knowledge
Horizon Europe or H2020 Grant Agreement Number:	652654
Related Links:	https://organic-farmknowledge.org/tool/31024
Project ID:	ofk
Deposited By:	Forschungsinstitut für biologischen Landbau, FiBL
ID Code:	31024
Deposited On:	18 Jan 2017 13:24
Last Modified:	02 May 2024 10:31
Document Language:	English, German/Deutsch
Status:	Published

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