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- W2967696525 abstract "Abstract Continuous use of heavy machinery in fields and frequent farm traffic sometimes result in soil compaction. Soil compaction reduces the oxygen (O 2 ) concentration in soil capillaries and hence lowers the O 2 availability for germinating seeds. We investigated how reduced O 2 levels changed germination behavior of weeds to elucidate their potential to adapt to O 2 -deficient soils (compacted, compressed, and waterlogged soils and soils with hard surfaces). Two similar laboratory experiments were conducted with five O 2 treatments (20.9%, 15%, 10%, 5%, and 2.5%). The germination percentage of the invasive weed hairy fiddleneck [ Amsinckia menziesii (Lehm.) A. Nelson & J.F. Macbr. var. menziesii ] and the common weeds common lambsquarters ( Chenopodium album L.) and Persian speedwell ( Veronica persica Poir) was not significantly reduced at 15% O 2 . The germination of scarlet pimpernel ( Anagallis arvensis L. ssp. arvensis ), silky windgrass [ Apera spica-venti (L.) Beauv.], catchweed bedstraw ( Galium aparine L.), and knawel ( Scleranthus annuus L.) was significantly reduced at 15% O 2 . The highest germination was obtained at 20.9% O 2 for blackgrass ( Alopecurus myosuroides Huds.), A. spica-venti , G. aparine , annual bluegrass ( Poa annua L.), wild mustard ( Sinapis arvensis L.), scentless chamomile [ Tripleurospermum inodorum (L.) Sch. Bip.], field violet ( Viola arvensis Murray) and the less common weeds A. arvensis and S. annuus . Distribution of flora in the landscape may change on O 2 -deficient soils by reducing germination of some species such as A. arvensis and S. annuus and favoring others like A. menziesii and C. album . The ability to germinate at 2.5% and 5% O 2 may contribute to explain why A. myosuroides and A. menziesii have become successful as weeds on O 2 -deficient soils, as they maintained a germination percentage between 34% and 58% at 2.5% O 2 ." @default.
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- W2967696525 date "2019-08-13" @default.
- W2967696525 modified "2023-09-28" @default.
- W2967696525 title "The effect of oxygen concentration on the germination of some weed species under control conditions" @default.
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- W2967696525 doi "https://doi.org/10.1017/wsc.2019.37" @default.
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