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Legacy effects of intercrop diversity and crop systems on weed-crop competition

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dc.contributor.authorMenalled, Uriel Danilo
dc.contributor.chairRyan, Matthew
dc.contributor.committeeMemberDiTommaso, Antonio
dc.contributor.committeeMemberPethybridge, Sarah
dc.contributor.committeeMemberSmith, Richard
dc.date.accessioned2020-08-10T20:07:33Z
dc.date.available2020-08-10T20:07:33Z
dc.date.issued2020-05
dc.description94 pages
dc.description.abstractCrop diversification can reduce weed-crop competition and contribute to ecological weed management, but the mechanisms by which crop diversity reduces weed-crop competition and the persistence of those effects are poorly understood. The legacy effects of crop diversity on weed-crop competition were tested after a multi-year field experiment that compared conspecific and heterospecific crop diversity in intercropped annual and perennial systems. In a greenhouse experiment, soil from the field experiment was collected and manipulated to elucidate the effects of soil microbes in determining weed-crop competition. After the final harvest in the field experiment a uniformity trial was conducted to evaluate the effects of crop diversity on weed community structure and compare weed-crop competition. In both cases, crop diversity had minimal effects on weed-crop competition. However, the annual and perennial cropping systems that contextualized the diversity treatments consistently influenced microbial plant-soil feedbacks, crop nutrient uptake, weed communities, and weed-crop competition.
dc.identifier.doihttps://doi.org/10.7298/jtkn-qc65
dc.identifier.otherMenalled_cornell_0058O_10926
dc.identifier.otherhttp://dissertations.umi.com/cornell:10926
dc.identifier.urihttps://hdl.handle.net/1813/70286
dc.language.isoen
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAgroecology
dc.subjectCrop systems
dc.subjectintercrop diversity
dc.subjectLegacy effects
dc.subjectPlant-soil feedbacks
dc.subjectWeed-crop competition
dc.titleLegacy effects of intercrop diversity and crop systems on weed-crop competition
dc.typedissertation or thesis
dcterms.licensehttps://hdl.handle.net/1813/59810
thesis.degree.disciplineSoil and Crop Sciences
thesis.degree.grantorCornell University
thesis.degree.levelMaster of Science
thesis.degree.nameM.S., Soil and Crop Sciences

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