{"id":"https://openalex.org/W760709391","doi":null,"title":"Ecological Variation of Rice and Weeds in Direct Seeding on Flooded Paddy Surface of No-Tillage","display_name":"Ecological Variation of Rice and Weeds in Direct Seeding on Flooded Paddy Surface of No-Tillage","publication_year":2002,"publication_date":"2002-01-01","ids":{"openalex":"https://openalex.org/W760709391","mag":"760709391"},"language":"en","primary_location":{"id":"mag:760709391","doi":null,"is_oa":false,"landing_page_url":"http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCHHBQ_2002_v22n2_100","pdf_url":null,"source":{"id":"https://openalex.org/S4306517755","display_name":"Korean Journal of Weed Science","issn_l":"0253-7648","issn":["0253-7648"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Korean Journal of Weed Science","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111708036","display_name":"Oh-Do Kwon","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Oh-Do Kwon","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061921629","display_name":"Yong In Kuk","orcid":"https://orcid.org/0000-0002-4000-8360","observed_orcids":["https://orcid.org/0000-0002-4000-8360"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yong In Kuk","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-4000-8360","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5029207692","display_name":"Hae-Ryoung Shin","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Hae-Ryoung Shin","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":93},"biblio":{"volume":"22","issue":"2","first_page":"100","last_page":"107"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10774","display_name":"Weed Control and Herbicide Applications","score":0.9175000190734863,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10774","display_name":"Weed Control and Herbicide Applications","score":0.9175000190734863,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.04839999973773956,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12792","display_name":"Soil Management and Crop Yield","score":0.011800000444054604,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/no-tillage","display_name":"no-tillage","score":0.6150000095367432},{"id":"https://openalex.org/keywords/rice","display_name":"rice","score":0.6389999985694885},{"id":"https://openalex.org/keywords/flooded-paddy-fields","display_name":"flooded paddy","score":0.859000027179718},{"id":"https://openalex.org/keywords/direct-seeding","display_name":"direct seeding","score":0.9789999723434448},{"id":"https://openalex.org/keywords/weed-species-composition","display_name":"weed species composition","score":0.6610000133514404},{"id":"https://openalex.org/keywords/barnyard-grass","display_name":"Echinochloa crus-galli","score":0.9160000085830688},{"id":"https://openalex.org/keywords/dissolved-oxygen","display_name":"dissolved oxygen","score":0.8619999885559082},{"id":"https://openalex.org/keywords/water-depth","display_name":"water depth","score":0.9860000014305115},{"id":"https://openalex.org/keywords/rice-yield","display_name":"rice yield","score":0.8859999775886536},{"id":"https://openalex.org/keywords/tillage-comparison","display_name":"tillage comparison","score":0.7279999852180481},{"id":"https://openalex.org/keywords/weed-succession","display_name":"weed succession","score":0.4490000009536743},{"id":"https://openalex.org/keywords/yield-regression-model","display_name":"yield regression model","score":0.4009999930858612},{"id":"https://openalex.org/keywords/1000-grain-weight","display_name":"1000-grain weight","score":0.6769999861717224}],"concepts":[{"id":"https://openalex.org/C2779357833","wikidata":"https://www.wikidata.org/wiki/Q163965","display_name":"Echinochloa","level":3,"score":0.7860813140869141},{"id":"https://openalex.org/C16397148","wikidata":"https://www.wikidata.org/wiki/Q878333","display_name":"Tillage","level":2,"score":0.779104471206665},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.7451841831207275},{"id":"https://openalex.org/C85582077","wikidata":"https://www.wikidata.org/wiki/Q842623","display_name":"Paddy field","level":2,"score":0.672481894493103},{"id":"https://openalex.org/C2775891814","wikidata":"https://www.wikidata.org/wiki/Q101879","display_name":"Weed","level":2,"score":0.6623561382293701},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.6414587497711182},{"id":"https://openalex.org/C2780008357","wikidata":"https://www.wikidata.org/wiki/Q163527","display_name":"Echinochloa crus-galli","level":4,"score":0.45654889941215515},{"id":"https://openalex.org/C2779247569","wikidata":"https://www.wikidata.org/wiki/Q2419334","display_name":"Tiller (botany)","level":2,"score":0.45391470193862915}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:760709391","doi":null,"is_oa":false,"landing_page_url":"http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCHHBQ_2002_v22n2_100","pdf_url":null,"source":{"id":"https://openalex.org/S4306517755","display_name":"Korean Journal of Weed Science","issn_l":"0253-7648","issn":["0253-7648"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Korean Journal of Weed Science","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.958299994468689,"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger"},{"score":0.7605999708175659,"id":"https://metadata.un.org/sdg/15","display_name":"Life on land"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W632136114","https://openalex.org/W203275820","https://openalex.org/W775189398","https://openalex.org/W2685094746","https://openalex.org/W407330768","https://openalex.org/W570773163","https://openalex.org/W3009914898","https://openalex.org/W1467003964","https://openalex.org/W834704051","https://openalex.org/W6948620063"],"abstract_inverted_index":{"No-tillage":[0],"cultivation":[1,120,146,273,312],"of":[2,118,144,163,201,214,230,261,271,303],"rice":[3,28,304,311],"was":[4,19,121,155,171,175,313],"evaluated":[5],"in":[6,25,101,137,167,179,191,206,218,238,249],"direct":[7,287,320],"seeding":[8,288,321],"on":[9,289,322],"flooded":[10,290,323],"paddy":[11,48,103,139,150,169,181,193,208,220,240,251,291,324],"surface":[12,325],"from":[13,129],"1993":[14],"to":[15,21,37,112,133,315],"1997.":[16],"This":[17],"study":[18],"conducted":[20],"examine":[22],"the":[23,33,43,96,116,142,156,164,192,196,199,254],"changes":[24],"weed":[26,99,107,126,159],"occurrence,":[27],"growth":[29,295,299],"and":[30,36,60,91,174,188,228,269,301],"yield":[31,246,267,302],"during":[32],"no-tillage":[34,44,102,119,138,145,168,207,239,262,272,310],"cultivation,":[35],"clarify":[38],"critical":[39,306],"year":[40,307,318],"limit":[41,308],"for":[42,286,309,319],"cultivation.":[45,263],"In":[46,148],"tillage":[47,149,180,219,250],"fields,":[49,151,221],"Echinochloa":[50,67,153],"crus-galli,":[51,68],"Aneilema":[52,69,130],"keisak":[53,70,131],"Hassk.,":[54,71],"Monochoria":[55,72],"vaginalis,":[56,73],"Eleocharis":[57,74],"kuroguwai":[58,75],"Ohwi,":[59,76],"Polygonum":[61],"hydropiper,":[62],"etc.":[63,94],"mainly":[64,97],"emerged,":[65],"whereas":[66],"Alopecurus":[77],"aequalis":[78],"Sobol.,":[79],"Leersia":[80,134],"japonica":[81,135],"Makino,":[82],"Sagittaria":[83,86],"pygmaea":[84],"Miq.,":[85],"trifolia":[87],"L.,":[88],"Ottelia":[89],"alismoides,":[90],"Potamogeton":[92],"distinctus,":[93],"were":[95,195,234,256],"occurring":[98],"species":[100,108,127],"fields.":[104],"Although":[105],"eleven":[106],"emerged":[109],"they":[110],"tended":[111],"become":[113],"simplified":[114],"as":[115,141,278],"duration":[117,143,270],"increased.":[122,147],"The":[123,161],"most":[124,157],"dominant":[125,158],"changed":[128],"Hassk.":[132],"Makino":[136],"fields":[140,170,182,194,209,241,252],"however,":[152],"crus-galli":[154],"species.":[160],"number":[162,200,213,229],"seedling":[165,202],"stands":[166],"40-60":[172],"per":[173,184,232],"lower":[176,212,245],"than":[177,216,247],"that":[178,294],"(79-92":[183],").":[185],"Dissolved":[186],"oxygen":[187],"water":[189],"depth":[190],"factors":[197],"influencing":[198],"stands.":[203],"Rice":[204,236],"plants":[205,237,255],"had":[210],"a":[211],"panicles":[215],"those":[217,248],"but":[222],"ripening":[223],"rate,":[224],"1,000":[225],"grain":[226],"weight":[227],"spikelets":[231],"panicle":[233],"similar.":[235],"exhibited":[242],"about":[243],"24%":[244],"when":[253],"cultivated":[257],"following":[258],"2":[259],"years":[260],"Regression":[264],"equations":[265],"between":[266],"(y)":[268],"(x)":[274],"can":[275],"be":[276,316],"obtained":[277],"follows,":[279],"y":[280],"=":[281],"-58.6x":[282],"+":[283],"525.0":[284],"()":[285],"surface.":[292],"Considering":[293],"characteristics":[296],"at":[297],"late":[298],"stage":[300],"plants,":[305],"found":[314],"1":[317]},"counts_by_year":[{"year":2016,"cited_by_count":1}],"updated_date":"2026-09-26T08:19:03.415552","created_date":"2016-06-24T00:00:00"}