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)

PDF - Published Version - Danish/Dansk (Nitrogen fixation and yield effect of catch crops)
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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:

Language	Value	URI
English	arable farming	http://aims.fao.org/aos/agrovoc/c_36528
English	crop rotation	http://aims.fao.org/aos/agrovoc/c_6662
English	catch crops	http://aims.fao.org/aos/agrovoc/c_29684
English	cereal crops	http://aims.fao.org/aos/agrovoc/c_25512
English	cover crops -> cover plants	http://aims.fao.org/aos/agrovoc/c_1936
English	cropping systems	http://aims.fao.org/aos/agrovoc/c_1971
English	crop management	http://aims.fao.org/aos/agrovoc/c_16094
English	crop yield	http://aims.fao.org/aos/agrovoc/c_10176
English	green manures	http://aims.fao.org/aos/agrovoc/c_3375
English	nitrogen fixation	http://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