{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/115948"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/115948","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Understanding the impact of residue and nitrogen inputs on soil carbon and nitrogen dynamics","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01","abstract_html":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01","abstract_has_math":false,"creators":["Jesmin, Tanjila"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Natural Res & Env Sciences","degree_department":null,"school":null,"contributors":["Mulvaney, Richard L","Arai, Yuji","Margenot, Andrew J","Boutton, Thomas W"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-08","date_published":"2022-08","updated_at":"2026-07-22T22:24:55Z","subjects":["Soil fertility","C mineralization","C sequestration","13C","Incubation study","CO2 production","Gross N mineralization/immobilization","Active biomass","Microbial biomass","Cellulase","Protease","B-glucosidase","Deaminase","Residue decomposition","N fertilization"],"languages":["en","eng"],"rights":["Copyright 2022 Tanjila Jesmin"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/115948","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mulvaney, Richard L","Arai, Yuji","Margenot, Andrew J","Boutton, Thomas W"]},{"key":"dc:creator","label":"Author","values":["Jesmin, Tanjila"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-08","2022-07-15"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Res & Env Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Soil fertility","C mineralization","C sequestration","13C","Incubation study","CO2 production","Gross N mineralization/immobilization","Active biomass","Microbial biomass","Cellulase","Protease","B-glucosidase","Deaminase","Residue decomposition","N fertilization"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2022 Tanjila Jesmin"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/115948"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01","The student, Tanjila Jesmin, accepted the attached license on 2022-07-15 at 15:42.","The student, Tanjila Jesmin, submitted this Dissertation for approval on 2022-07-15 at 15:52.","This Dissertation was approved for publication on 2022-07-15 at 17:02.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18344 on 2022-11-16 at 10:56:30","The effect of N fertilization on residue decomposition has been studied extensively; however, contrasting results reflect differences in residue quality, the form of N applied, and the type of soil studied. Two 60-d laboratory incubation experiments were conducted to compare the effect of synthetic N addition (as NH4+ or NO3–) on the decomposition of corn (Zea mays L.) stover, in which (1) a Mollisol was treated with high and low C:N ratio residues; or (2) a single residue was incorporated in two Alfisols of contrasting N supply. In both projects, CO2 emissions were monitored continuously with or without atmospheric 13C analysis and periodic measurement of active biomass, microbial biomass C and N, enzyme activities involved in C (cellulase and β-glucosidase) and N (protease and deaminase) cycling, and gross N mineralization and immobilization by 15N pool dilution. Cumulative CO2 production was greater for the high than low N residue treatment, and was significantly increased by the addition of exogenous N. The stimulatory effect of mineral N was greater for the low- than high-N supplying soil and more prominent in the first than in the second month of incubation, as would be expected due to more rapid substrate depletion from microbial C utilization previously enhanced by greater N availability. The stimulatory effect of exogenous N was verified with respect to microbial indicators, all of which were significantly correlated with cumulative CO2 production. No consistent soil- or treatment-specific differences occurred in measuring gross N mineralization and immobilization; however, net immobilization was usually observed in both studies. Intensive N fertilization in modern corn production increases the input of residues but is not conducive to soil C sequestration."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Understanding the impact of residue and nitrogen inputs on soil carbon and nitrogen dynamics"]}]}],"canonical_facts":{"dc:contributor":["Mulvaney, Richard L","Arai, Yuji","Margenot, Andrew J","Boutton, Thomas W"],"dc:creator":["Jesmin, Tanjila"],"dc:date":["2022-08","2022-07-15"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01","The student, Tanjila Jesmin, accepted the attached license on 2022-07-15 at 15:42.","The student, Tanjila Jesmin, submitted this Dissertation for approval on 2022-07-15 at 15:52.","This Dissertation was approved for publication on 2022-07-15 at 17:02.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18344 on 2022-11-16 at 10:56:30","The effect of N fertilization on residue decomposition has been studied extensively; however, contrasting results reflect differences in residue quality, the form of N applied, and the type of soil studied. Two 60-d laboratory incubation experiments were conducted to compare the effect of synthetic N addition (as NH4+ or NO3–) on the decomposition of corn (Zea mays L.) stover, in which (1) a Mollisol was treated with high and low C:N ratio residues; or (2) a single residue was incorporated in two Alfisols of contrasting N supply. In both projects, CO2 emissions were monitored continuously with or without atmospheric 13C analysis and periodic measurement of active biomass, microbial biomass C and N, enzyme activities involved in C (cellulase and β-glucosidase) and N (protease and deaminase) cycling, and gross N mineralization and immobilization by 15N pool dilution. Cumulative CO2 production was greater for the high than low N residue treatment, and was significantly increased by the addition of exogenous N. The stimulatory effect of mineral N was greater for the low- than high-N supplying soil and more prominent in the first than in the second month of incubation, as would be expected due to more rapid substrate depletion from microbial C utilization previously enhanced by greater N availability. The stimulatory effect of exogenous N was verified with respect to microbial indicators, all of which were significantly correlated with cumulative CO2 production. No consistent soil- or treatment-specific differences occurred in measuring gross N mineralization and immobilization; however, net immobilization was usually observed in both studies. Intensive N fertilization in modern corn production increases the input of residues but is not conducive to soil C sequestration."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/115948"],"dc:language":["en","eng"],"dc:rights":["Copyright 2022 Tanjila Jesmin"],"dc:subject":["Soil fertility","C mineralization","C sequestration","13C","Incubation study","CO2 production","Gross N mineralization/immobilization","Active biomass","Microbial biomass","Cellulase","Protease","B-glucosidase","Deaminase","Residue decomposition","N fertilization"],"dc:title":["Understanding the impact of residue and nitrogen inputs on soil carbon and nitrogen dynamics"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Natural Res & Env Sciences"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:55Z"}