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Cultivation in rows – Nitrogen fixation by catch crops and their effect on yield

{Tool} Cultivation in rows – Nitrogen fixation by catch crops and their effect on yield. [Rækkedyrkning – Efterafgrødens kvælstoffiksering og effekt på udbytte.] Creator(s): Petersen, Maja Eline and Bertelsen, Inger. Issuing Organisation(s): SEGES Økologi Innovation, Aarhus University, Copenhagen University, AgroIntelli, Økologisk VKST, Barritskov Land- og Skovbrug. ROWCROP – Højere udbytter med rækkedyrkning og efterafgrøder. (2018)

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Online at: https://www.landbrugsinfo.dk/Oekologi/Planteavl/Sider/oe_18_3811_faktaark-om-raekkedyrkningssystem.aspx

Summary

Row cultivation in cereals with nitrogen-fixing crops can improve nitrogen supply in the crop rotation, while reducing nitrogen leaching. Well-established and competitive catch crops are important, they can both supply a significant amount of nitrogen to the subsequent crops and compete against the weeds.
There needs to be a balance between main and catch crops – competitive main crops require early establishment of the catch crop and/or larger row distance. In a less competitive main crop, row distance can be narrower and the catch crops should be sown later. Early harvest is important to get a competitive catch crop.
Well established catch crops can increase the yield of the succeeding crop, corresponding to up to 50 kg nitrogen per hectare.
Well established catch crops – including nitrogen fixing species – reduce nitrogen leaching by up to 20 kg N per hectare.

Summary translation

Rækkedyrkning i korn med kvælstoffikserende efterafgrøder kan forbedre kvælstofforsyningen i sædskiftet, samtidig med at kvælstofudvaskningen reduceres. Det er vigtigt med veletablerede og kraftige efterafgrøder, som både kan levere en betydelig mængde kvælstof til de efterfølgende afgrøder og konkurrere mod ukrudtet.
Der skal være en balance mellem hoved- og efterafgrøder - konkurrencedygtige hovedafgrøder kræver tidlig etablering af efterafgrøderne og / eller større rækkeafstand. I en mindre konkurrencedygtig hovedafgrøde kan rækkeafstanden være smallere, og efterafgrøderne skal sås senere. Tidlig høst er vigtig for at få en konkurrencedygtig efterafgrøde.
Veletablerede efterafgrøder kan øge udbyttet af den efterfølgende afgrøde svarende til op til 50 kg kvælstof/ha.
Veletablerede efterafgrøder - inklusive kvælstoffikserende - reducerer kvælstofudvaskning med op til 20 kg N/ha.

EPrint Type:Practice tool
Teaser:Reduce N-leaching and improve yield with catch crops
What problem does the tool address?:High yields in cereals depend on sufficient nutrient supply
What solution does the tool offer?:Increased row spacing in the main crop and early sowing can improve the growth of the catch crop, provide better nitrogen impact and stabilize yields over time.
Country:Denmark
Type of Practice Tool:Leaflets & guidelines
Theme:Soil quality and fertility, Crop specific
Agrovoc keywords:
LanguageValueURI
Englisharable farminghttp://aims.fao.org/aos/agrovoc/c_36528
Englishcrop rotationhttp://aims.fao.org/aos/agrovoc/c_6662
Englishcatch cropshttp://aims.fao.org/aos/agrovoc/c_29684
Englishcereal cropshttp://aims.fao.org/aos/agrovoc/c_25512
Englishcover crops -> cover plantshttp://aims.fao.org/aos/agrovoc/c_1936
Englishcropping systemshttp://aims.fao.org/aos/agrovoc/c_1971
Englishcrop managementhttp://aims.fao.org/aos/agrovoc/c_16094
Englishcrop yieldhttp://aims.fao.org/aos/agrovoc/c_10176
Englishgreen manureshttp://aims.fao.org/aos/agrovoc/c_3375
Englishnitrogen fixationhttp://aims.fao.org/aos/agrovoc/c_5196
Subjects: Crop husbandry > Crop combinations and interactions
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Soil
Research affiliation: European Union > Horizon 2020 > OK-Net Arable
Related Links:http://icrofs.dk/en/research/danish-research/organic-rdd-2/rowcrop/
Project ID:oknet
Deposited By: Rasmussen, Ilse Ankjær
ID Code:36825
Deposited On:19 Nov 2019 14:39
Last Modified:02 Dec 2019 12:59
Document Language:Danish/Dansk
Status:Published

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