{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/97691"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/97691","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Production factors to improve edamame emergence and crop competitiveness with weeds","abstract":"The student, Laura Crawford, submitted this Thesis for approval on 2017-04-12 at 11:48.","abstract_html":"The student, Laura Crawford, submitted this Thesis for approval on 2017-04-12 at 11:48.","abstract_has_math":false,"creators":["Crawford, Laura Elizabeth"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Crop Sciences","degree_department":null,"school":null,"contributors":["Williams, Martin M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08-10T20:32:52Z","date_published":"2017-08-10T20:32:52Z","updated_at":"2026-07-22T22:24:34Z","subjects":["Edamame","Planting depth","Cover crops","Seed size"],"languages":["en"],"rights":["Copyright 2017 Laura Crawford"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/97691","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Williams, Martin M."]},{"key":"dc:creator","label":"Author","values":["Crawford, Laura Elizabeth"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-08-10T20:32:52Z","2019-08-11T09:15:31Z","2017-04-18","2017-05"]},{"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":["Edamame","Planting depth","Cover crops","Seed size"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Laura Crawford"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/97691"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The student, Laura Crawford, submitted this Thesis for approval on 2017-04-12 at 11:48.","This Thesis was approved for publication on 2017-04-18 at 12:29.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10720 on 2017-08-10 at 15:05:27","Made available in DSpace on 2017-08-10T20:32:52Z (GMT). No. of bitstreams: 2 CRAWFORD-THESIS-2017.pdf: 672445 bytes, checksum: 330f569525732bfb7eb6a7498c81c76e (MD5) LICENSE.txt: 4211 bytes, checksum: 24beecd4ac3ba72f40f12dbf413521df (MD5) Previous issue date: 2017-04-18","Embargo set by: Colleen Fallaw for item 102744 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 102744 on 2019-08-11T09:15:31Z.","There is a lack of information on edamame production in the United States, despite growing consumer demand. Edamame is typically managed similarly to grain soybean, but edamame differs in several key characteristics, including larger seed size in edamame. Seed size can affect emergence patterns and competitive ability. The available literature indicates edamame typically has low crop emergence and that there are relatively few weed management options for edamame. Little research has been done on the low crop emergence in edamame, but some have indicated that edamame is frequently planted too deep. There has been a successful push to get more herbicides labelled for use in edamame, but producers need complementing management tactics as herbicide resistance becomes more widespread. Integrated weed management plans can include several complementing weed management tactics, including cover crops and crop interference. Research was conducted near Urbana, Illinois to examine the roles of planting depth, cover crops, and crop interference in emergence and weed management in edamame production systems. Seed were separated into small and large size classes in the planting depth and interference trials to evaluate the relationships between seed size and planting depth and between seed size and crop interference. Seed size did not affect total emergence, but smaller seed reached 50% emergence 0.7 days faster than large seed. Planting at 5 cm reduced total emergence by 19% and resulted in a 1.5 day delay in reaching 50% emergence relative to planting at 1 or 2 cm. These results indicate edamame should be planted shallower than is recommended for grain soybean. Results from the study on the use of cover crops in edamame indicate a fall-seeded rye cover crop terminated 6-8 weeks before edamame planting is the best cover crop residue system for suppressing weeds without suppressing the crop. The rye treatment terminated 6-8 weeks before edamame planting resulted in the same crop emergence but 19% lower weed emergence and 93% less weed biomass than the bare soil treatment. Results on the varying degrees of crop interference indicate that larger seeds within a cultivar can influence edamame’s ability to tolerate weed interference and that edamame’s weed suppressive ability can be affected by cultivar choice. Larger seed had 15 and 13% higher tolerance in terms of crop area and biomass, respectively, at 8 weeks after emergence. Compared to other cultivars, White Lion had 53% lower weed suppressive ability in terms of weed biomass at 8 weeks after emergence. These results improve understanding of crop emergence and integrated weed management plans in edamame production.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Laura Crawford, accepted the attached license on 2017-04-12 at 11:41."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Production factors to improve edamame emergence and crop competitiveness with weeds"]}]}],"canonical_facts":{"dc:contributor":["Williams, Martin M."],"dc:creator":["Crawford, Laura Elizabeth"],"dc:date":["2017-08-10T20:32:52Z","2019-08-11T09:15:31Z","2017-04-18","2017-05"],"dc:description":["The student, Laura Crawford, submitted this Thesis for approval on 2017-04-12 at 11:48.","This Thesis was approved for publication on 2017-04-18 at 12:29.","DSpace SAF Submission Ingestion Package generated from Vireo submission #10720 on 2017-08-10 at 15:05:27","Made available in DSpace on 2017-08-10T20:32:52Z (GMT). No. of bitstreams: 2 CRAWFORD-THESIS-2017.pdf: 672445 bytes, checksum: 330f569525732bfb7eb6a7498c81c76e (MD5) LICENSE.txt: 4211 bytes, checksum: 24beecd4ac3ba72f40f12dbf413521df (MD5) Previous issue date: 2017-04-18","Embargo set by: Colleen Fallaw for item 102744 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 102744 on 2019-08-11T09:15:31Z.","There is a lack of information on edamame production in the United States, despite growing consumer demand. Edamame is typically managed similarly to grain soybean, but edamame differs in several key characteristics, including larger seed size in edamame. Seed size can affect emergence patterns and competitive ability. The available literature indicates edamame typically has low crop emergence and that there are relatively few weed management options for edamame. Little research has been done on the low crop emergence in edamame, but some have indicated that edamame is frequently planted too deep. There has been a successful push to get more herbicides labelled for use in edamame, but producers need complementing management tactics as herbicide resistance becomes more widespread. Integrated weed management plans can include several complementing weed management tactics, including cover crops and crop interference. Research was conducted near Urbana, Illinois to examine the roles of planting depth, cover crops, and crop interference in emergence and weed management in edamame production systems. Seed were separated into small and large size classes in the planting depth and interference trials to evaluate the relationships between seed size and planting depth and between seed size and crop interference. Seed size did not affect total emergence, but smaller seed reached 50% emergence 0.7 days faster than large seed. Planting at 5 cm reduced total emergence by 19% and resulted in a 1.5 day delay in reaching 50% emergence relative to planting at 1 or 2 cm. These results indicate edamame should be planted shallower than is recommended for grain soybean. Results from the study on the use of cover crops in edamame indicate a fall-seeded rye cover crop terminated 6-8 weeks before edamame planting is the best cover crop residue system for suppressing weeds without suppressing the crop. The rye treatment terminated 6-8 weeks before edamame planting resulted in the same crop emergence but 19% lower weed emergence and 93% less weed biomass than the bare soil treatment. Results on the varying degrees of crop interference indicate that larger seeds within a cultivar can influence edamame’s ability to tolerate weed interference and that edamame’s weed suppressive ability can be affected by cultivar choice. Larger seed had 15 and 13% higher tolerance in terms of crop area and biomass, respectively, at 8 weeks after emergence. Compared to other cultivars, White Lion had 53% lower weed suppressive ability in terms of weed biomass at 8 weeks after emergence. These results improve understanding of crop emergence and integrated weed management plans in edamame production.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Laura Crawford, accepted the attached license on 2017-04-12 at 11:41."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/97691"],"dc:language":["en"],"dc:rights":["Copyright 2017 Laura Crawford"],"dc:subject":["Edamame","Planting depth","Cover crops","Seed size"],"dc:title":["Production factors to improve edamame emergence and crop competitiveness with weeds"],"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":"2026-07-22T22:24:34Z"}