ArticleFrontiers in plant science2026
Dynamics of arable weeds communities in spring and winter wheat under different legume pre-crops during organic conversion.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The transition from conventional to organic farming alters weed communities, their abundance, and competitive interactions with crops. This study assessed changes in annual arable weed communities in winter and spring wheat during the conversion from conventional to organic farming, in relation to different legume preceding crops: peas (P), soybeans (S), a vetch-oat mixture (VOM), and spring barley undersown with red clover (SB+RC). The results showed that during the conversion period, weed species richness, total weed emergence, and the abundance of harmful weed species increased. In the legume cropping years, SB+RC provided the most effective weed suppression, whereas soybeans were the least effective. Weed abundance and biomass were lower in winter wheat than in spring wheat, indicating greater competitive ability of winter wheat. Legume preceding crops generally increased cereal competitiveness and reduced weed biomass, while the effect of SB+RC on weeds differed from other legume treatments. The highest individual weed biomass was recorded for
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