Nitrogen dynamics in cover crop-based no-till corn

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dc.contributor.advisorWeil, Ray Ren_US
dc.contributor.authorPoffenbarger, Hanna Janeen_US
dc.contributor.departmentEnvironmental Science and Technologyen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2014-06-26T05:35:49Z
dc.date.available2014-06-26T05:35:49Z
dc.date.issued2014en_US
dc.description.abstractLegume/grass cover crop mixtures and sidedress subsurface band manure application are two approaches to improving nitrogen (N) use efficiency in a cover crop-based no-till corn (<italic>Zea mays</italic> L.) system. The objectives of this study were to: 1) quantify cover crop biomass and N content in response to different hairy vetch (<italic>Vicia villosa</italic> Roth)/cereal rye (<italic>Secale cereale</italic> L.) sown proportions, 2) evaluate the effects of cover crop species proportions and pelletized poultry litter (PPL) application method on residue decomposition, and 3) model the spatio-temporal dynamics of soil inorganic N as influenced by different cover crop residues and subsurface band-applied PPL. Results suggest that cover crop mixtures can accumulate as much biomass as a cereal rye monoculture and as much N as a hairy vetch monoculture, and have decomposition patterns intermediate between those of monocultures. Subsurface band PPL application provided a localized N source that did not influence decomposition of surface mulches.en_US
dc.identifier.urihttp://hdl.handle.net/1903/15451
dc.language.isoenen_US
dc.subject.pqcontrolledSoil sciencesen_US
dc.subject.pqcontrolledAgronomyen_US
dc.subject.pqcontrolledEnvironmental scienceen_US
dc.subject.pquncontrolledcover cropen_US
dc.subject.pquncontrolleddecompositionen_US
dc.subject.pquncontrolledmanureen_US
dc.subject.pquncontrollednitrogenen_US
dc.titleNitrogen dynamics in cover crop-based no-till cornen_US
dc.typeThesisen_US

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