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Weed Species Trait Selection as Shaped by Region and Crop Diversity in Organically Managed Spring Cereals

Hofmeijer, Merel A. J. and Melander, Bo and Salonen, Jukka and Lundkvist, Anneli and Zarina, Livija and Gerowitt, Baerbel (2021). Weed Species Trait Selection as Shaped by Region and Crop Diversity in Organically Managed Spring Cereals. Agriculture. 11 , 433
[Research article]

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Abstract

Weeds remain a challenge in organic arable farming, as well as supply ecosystem services. The aim is to control weed densities while hosting a diverse and manageable weed community, preventing domination of few deleterious species. Therefore, we want to understand how specific species are stimulated, and which traits are selected for. This study focuses on crop diversity hypothesizing that (1) regions and (2) crop diversity function as filters for specific weed species traits. We conducted a weed monitoring in spring cereals over 2 years on organic farms in five northern European regions. Management and weed trait variables collected for the occurring species allowed an RLQ fourth-corner analysis. The weed communities were regionally specific, but trait selection was not observed, except in Latvia. Hence, the regional species pool provided different species with similar traits. Crop diversity within the management of spring cereals, such as undersowing and cereal frequency in the rotation, affected weed traits. The number of years under organic production selected no traits, although species numbers are known to increase. Hence, general weed species diversity increased, irrespective of traits. We conclude that organic management may support the agility within the weed community against selection of species and act as a buffer rather than as filter.

Authors/Creators:Hofmeijer, Merel A. J. and Melander, Bo and Salonen, Jukka and Lundkvist, Anneli and Zarina, Livija and Gerowitt, Baerbel
Title:Weed Species Trait Selection as Shaped by Region and Crop Diversity in Organically Managed Spring Cereals
Series Name/Journal:Agriculture
Year of publishing :2021
Volume:11
Article number:433
Number of Pages:17
Publisher:MDPI
ISSN:2077-0472
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:undersowing, winter catch crops, crop mixtures, arable flora, community assembly, Baltic area, northern Europe
URN:NBN:urn:nbn:se:slu:epsilon-p-112128
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112128
Additional ID:
Type of IDID
DOI10.3390/agriculture11050433
Web of Science (WoS)000653295100001
ID Code:24411
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:07 Jun 2021 16:44
Metadata Last Modified:07 Jun 2021 16:51

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