{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/101298"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/101298","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A holistic assessment for benchmarking the sustainability of maize production in the US Midwest","abstract":"Made available in DSpace on 2018-09-04T20:47:03Z (GMT). No. of bitstreams: 2 RICCETTOAGUIRREZABALA-THESIS-2018.pdf: 1390983 bytes, checksum: 59c450fbbb3233a420aff9d62924610b (MD5) LICENSE.txt: 4224 bytes, checksum: 9a8e275c1679f2d7368ee6089705a41d (MD5) Previous issue date: 2018-04-12","abstract_html":"Made available in DSpace on 2018-09-04T20:47:03Z (GMT). No. of bitstreams: 2 RICCETTOAGUIRREZABALA-THESIS-2018.pdf: 1390983 bytes, checksum: 59c450fbbb3233a420aff9d62924610b (MD5) LICENSE.txt: 4224 bytes, checksum: 9a8e275c1679f2d7368ee6089705a41d (MD5) Previous issue date: 2018-04-12","abstract_has_math":false,"creators":["Riccetto Aguirrezabala, Sara Magdalena"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Crop Sciences","degree_department":null,"school":null,"contributors":["Pittelkow, Cameron M.","Davis, Adam","Guan, Kaiyu"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-04T20:47:03Z","date_published":"2018-09-04T20:47:03Z","updated_at":"2026-07-22T22:24:38Z","subjects":["sustainable intensification, holistic assessment"],"languages":["en"],"rights":["Copyright 2018 Sara Riccetto Aguirrezabala"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/101298","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Pittelkow, Cameron M.","Davis, Adam","Guan, Kaiyu"]},{"key":"dc:creator","label":"Author","values":["Riccetto Aguirrezabala, Sara Magdalena"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-09-04T20:47:03Z","2020-09-05T09:15:29Z","2018-04-12","2018-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Crop Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["sustainable intensification, holistic assessment"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2018 Sara Riccetto Aguirrezabala"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/101298"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Made available in DSpace on 2018-09-04T20:47:03Z (GMT). No. of bitstreams: 2 RICCETTOAGUIRREZABALA-THESIS-2018.pdf: 1390983 bytes, checksum: 59c450fbbb3233a420aff9d62924610b (MD5) LICENSE.txt: 4224 bytes, checksum: 9a8e275c1679f2d7368ee6089705a41d (MD5) Previous issue date: 2018-04-12","Achieving efficient and environmentally sustainable agricultural systems is a key issue for the US Midwest, the world’s largest maize producer. In this study we benchmarked the sustainability of maize production using an integrated set of performance criteria to identify regions where desirable outcomes are occurring, while also highlighting opportunities for improvement. We calculated the following indicators for Illinois (IL), Indiana (IN), and Iowa (IA) evaluated from 1995-2012: Yield gaps (Yg), water productivity (Wp), nitrogen partial productivity (Npp), nitrogen surplus (Ns), minimum yield potential (Myp) and coefficient of variation of yield (Cv). Our analysis of this geospatial dataset revealed high spatial and temporal variability of these indicators, with several notable trends detected over the study period. Statewide averages ranged from 20.1-24.7% for Yg, 13.8-14.7 kg mm-1 for Wp, 13.1-17.3 kg ha-1 for Ns, 46.9- 53.2 for Npp, 14.4-17.9 % for Cv and 6- 7.3 Mg ha-1 for Myp. Southern IA was generally the region associated with a decreasing performance across indicators, while western IA was the region that showed the greatest improvement over time. When integrating different indicators, coldspots (defined as regions with undesirable outcomes) were roughly six times as frequent as hotspots (regions with desirable outcomes), highlighting the challenge in balancing agronomic and environmental goals to achieve sustainable production in this region. In particular, southern regions of the three states were associated with the most concerning performance, while the northern regions exhibited more favorable outcomes. When pairwise relationships between Yg, Wp and Npp were evaluated to identify potential synergies and tradeoffs, our results showed that Yg and Wp were positively related in most of the study area, while no consistent synergies or tradeoffs were detected between Yg and Npp, and between Wp and Npp. This study is one of the first to assess maize yield performance at the county-scale with resource use efficiency and environmental indicators in a holistic analysis to advance sustainable intensification efforts for this region.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-05-01","The student, Sara Riccetto Aguirrezabala, accepted the attached license on 2018-04-11 at 16:15.","The student, Sara Riccetto Aguirrezabala, submitted this Thesis for approval on 2018-04-11 at 17:38.","This Thesis was approved for publication on 2018-04-12 at 15:00.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12196 on 2018-08-31 at 17:27:19","Embargo set by: Seth Robbins for item 107383 Lift date: 2020-09-04T20:47:38Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 107383 Lift date: 2020-09-04T20:50:11Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 107383 on 2020-09-05T09:15:29Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A holistic assessment for benchmarking the sustainability of maize production in the US Midwest"]}]}],"canonical_facts":{"dc:contributor":["Pittelkow, Cameron M.","Davis, Adam","Guan, Kaiyu"],"dc:creator":["Riccetto Aguirrezabala, Sara Magdalena"],"dc:date":["2018-09-04T20:47:03Z","2020-09-05T09:15:29Z","2018-04-12","2018-05"],"dc:description":["Made available in DSpace on 2018-09-04T20:47:03Z (GMT). No. of bitstreams: 2 RICCETTOAGUIRREZABALA-THESIS-2018.pdf: 1390983 bytes, checksum: 59c450fbbb3233a420aff9d62924610b (MD5) LICENSE.txt: 4224 bytes, checksum: 9a8e275c1679f2d7368ee6089705a41d (MD5) Previous issue date: 2018-04-12","Achieving efficient and environmentally sustainable agricultural systems is a key issue for the US Midwest, the world’s largest maize producer. In this study we benchmarked the sustainability of maize production using an integrated set of performance criteria to identify regions where desirable outcomes are occurring, while also highlighting opportunities for improvement. We calculated the following indicators for Illinois (IL), Indiana (IN), and Iowa (IA) evaluated from 1995-2012: Yield gaps (Yg), water productivity (Wp), nitrogen partial productivity (Npp), nitrogen surplus (Ns), minimum yield potential (Myp) and coefficient of variation of yield (Cv). Our analysis of this geospatial dataset revealed high spatial and temporal variability of these indicators, with several notable trends detected over the study period. Statewide averages ranged from 20.1-24.7% for Yg, 13.8-14.7 kg mm-1 for Wp, 13.1-17.3 kg ha-1 for Ns, 46.9- 53.2 for Npp, 14.4-17.9 % for Cv and 6- 7.3 Mg ha-1 for Myp. Southern IA was generally the region associated with a decreasing performance across indicators, while western IA was the region that showed the greatest improvement over time. When integrating different indicators, coldspots (defined as regions with undesirable outcomes) were roughly six times as frequent as hotspots (regions with desirable outcomes), highlighting the challenge in balancing agronomic and environmental goals to achieve sustainable production in this region. In particular, southern regions of the three states were associated with the most concerning performance, while the northern regions exhibited more favorable outcomes. When pairwise relationships between Yg, Wp and Npp were evaluated to identify potential synergies and tradeoffs, our results showed that Yg and Wp were positively related in most of the study area, while no consistent synergies or tradeoffs were detected between Yg and Npp, and between Wp and Npp. This study is one of the first to assess maize yield performance at the county-scale with resource use efficiency and environmental indicators in a holistic analysis to advance sustainable intensification efforts for this region.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-05-01","The student, Sara Riccetto Aguirrezabala, accepted the attached license on 2018-04-11 at 16:15.","The student, Sara Riccetto Aguirrezabala, submitted this Thesis for approval on 2018-04-11 at 17:38.","This Thesis was approved for publication on 2018-04-12 at 15:00.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12196 on 2018-08-31 at 17:27:19","Embargo set by: Seth Robbins for item 107383 Lift date: 2020-09-04T20:47:38Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 107383 Lift date: 2020-09-04T20:50:11Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 107383 on 2020-09-05T09:15:29Z."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/101298"],"dc:language":["en"],"dc:rights":["Copyright 2018 Sara Riccetto Aguirrezabala"],"dc:subject":["sustainable intensification, holistic assessment"],"dc:title":["A holistic assessment for benchmarking the sustainability of maize production in the US Midwest"],"dc:type":["text"],"thesis:degree_discipline":["Crop Sciences"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:38Z"}