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dc.contributor.authorVanVolkenburg, Heather
dc.contributor.authorGuinel, Frederique C.
dc.contributor.authorVasseur, Liette
dc.date.accessioned2020-04-17T20:36:11Z
dc.date.available2020-04-17T20:36:11Z
dc.date.issued2020-04-08
dc.identifier.citationAgronomy 2020, 10(4), 529en_US
dc.identifier.issn2073-4395
dc.identifier.urihttp://hdl.handle.net/10464/14792
dc.description.abstractAmaranthushybridus is anoxious weed in Ontario, with demonstrated allelopathic properties that can lead to decreased agricultural production. We tested the germination and growth of five cover crop species exposed to A. hybridus extracts, and to dried or fresh materials in soil. A germination index was calculated, and the dry weight of plant organs were measured to quantify responses to treatments. All species had reduced germination (≤29%) in 100% extract. Trifolium pratense had significant root weight reductions in extract (52%) and dried (72%) treatments, whereas shoot weight only decreased (48%) in dried treatment. Medicagosativa shoot weight decreased (52%) in 20g fresh treatment, while root weight decreased (62%) in dried treatment. Shoot weight of Raphanus sativus increased (32%) at mid-extract concentrations, while root weight increased (33%) only with dried treatment; however, both its shoot and root weight decreased (>40%) in fresh treatment. Only the shoot weight of Loliummultiflorum increased (41% in 75% extract and 55% in dried treatment). Both Cichorium intybus shoot and root weights decreased (~50%) in fresh treatment. Crop responses to A. hybridus are complex, and material and species-dependant. Further testing in the field may provide a more comprehensive understanding of how to improve the management of A. hybridus.en_US
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.subjectCover cropsen_US
dc.subjectGerminationen_US
dc.subjectPlant growthen_US
dc.subjectCompetitionen_US
dc.subjectFacilitationen_US
dc.subjectAgricultureen_US
dc.subjectAllelopthyen_US
dc.titleImpacts of Smooth Pigweed (Amaranthus hybridus) on Cover Crops in Southern Ontarioen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.3390/agronomy10040529
refterms.dateFOA2021-08-18T01:31:09Z


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