{"id":"https://openalex.org/W3167744572","doi":null,"title":"Maize yield improvement by optimal rate and timing of nitrogen fertilizer application in Southwest Ethiopia","display_name":"Maize yield improvement by optimal rate and timing of nitrogen fertilizer application in Southwest Ethiopia","publication_year":2021,"publication_date":"2021-01-01","ids":{"openalex":"https://openalex.org/W3167744572","mag":"3167744572"},"language":"en","primary_location":{"id":"mag:3167744572","doi":null,"is_oa":false,"landing_page_url":"https://www.abrinternationaljournal.org/articles/maize-yield-improvement-by-optimal-rate-and-timing-of-nitrogen-fertilizer-application-in-southwest-ethiopia.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"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/A5085189978","display_name":"Haile Negash","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Haile Negash","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046327466","display_name":"Wondosen Wondimu","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Wondosen Wondimu","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002062311","display_name":"Abdisa Abraham","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Abdisa Abraham","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5016317479","display_name":"Zenabu Belay","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zenabu Belay","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":0.84,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.72917332,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":95},"biblio":{"volume":"37","issue":"3","first_page":"127","last_page":"138"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12310","display_name":"Crop Yield and Soil Fertility","score":0.9585000276565552,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop 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/T12310","display_name":"Crop Yield and Soil Fertility","score":0.9585000276565552,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop 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/T12294","display_name":"Agricultural Science and Fertilization","score":0.0406000018119812,"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"}},{"id":"https://openalex.org/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.0003000000142492354,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/maize","display_name":"maize","score":0.9129999876022339},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.7749999761581421},{"id":"https://openalex.org/keywords/split-nitrogen-application","display_name":"split nitrogen application","score":0.7910000085830688},{"id":"https://openalex.org/keywords/nitrogen-application-timing","display_name":"nitrogen application timing","score":0.8040000200271606},{"id":"https://openalex.org/keywords/nitrogen-application-rate","display_name":"nitrogen application rate","score":0.7300000190734863},{"id":"https://openalex.org/keywords/grain-yield","display_name":"grain yield","score":0.8880000114440918},{"id":"https://openalex.org/keywords/yield-components","display_name":"yield components","score":0.9269999861717224},{"id":"https://openalex.org/keywords/nitrogen-uptake","display_name":"nitrogen uptake","score":0.753000020980835},{"id":"https://openalex.org/keywords/nitrogen-recovery","display_name":"nitrogen recovery","score":0.7310000061988831},{"id":"https://openalex.org/keywords/agronomic-efficiency","display_name":"agronomic efficiency","score":0.9739999771118164},{"id":"https://openalex.org/keywords/cob-number","display_name":"cob number","score":0.7239999771118164},{"id":"https://openalex.org/keywords/southwest-ethiopia","display_name":"Southwest Ethiopia","score":0.4180000126361847}],"concepts":[{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.8783915042877197},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.6997088193893433},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.692471981048584},{"id":"https://openalex.org/C90982505","wikidata":"https://www.wikidata.org/wiki/Q16938886","display_name":"Leaching (pedology)","level":3,"score":0.6188888549804688},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5751872658729553},{"id":"https://openalex.org/C137660486","wikidata":"https://www.wikidata.org/wiki/Q732240","display_name":"Growing season","level":2,"score":0.5532386898994446},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4756690561771393},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.46327754855155945},{"id":"https://openalex.org/C75639521","wikidata":"https://www.wikidata.org/wiki/Q1283519","display_name":"Field experiment","level":2,"score":0.454253226518631},{"id":"https://openalex.org/C2776394811","wikidata":"https://www.wikidata.org/wiki/Q3634497","display_name":"Cropping system","level":3,"score":0.45215746760368347},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.41238224506378174},{"id":"https://openalex.org/C13558536","wikidata":"https://www.wikidata.org/wiki/Q785116","display_name":"Cropping","level":3,"score":0.410504013299942},{"id":"https://openalex.org/C137580998","wikidata":"https://www.wikidata.org/wiki/Q235352","display_name":"Crop","level":2,"score":0.3781033754348755},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.2801162600517273},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.17626497149467468},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.134831964969635},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.1104789674282074},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.1003866195678711},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.08152914047241211},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:3167744572","doi":null,"is_oa":false,"landing_page_url":"https://www.abrinternationaljournal.org/articles/maize-yield-improvement-by-optimal-rate-and-timing-of-nitrogen-fertilizer-application-in-southwest-ethiopia.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Zero hunger","score":1.0,"id":"https://metadata.un.org/sdg/2"}],"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/W4405455651","https://openalex.org/W4312758379","https://openalex.org/W7155005024","https://openalex.org/W4286664537","https://openalex.org/W6925961941","https://openalex.org/W6907062425","https://openalex.org/W7215417121","https://openalex.org/W2916029266","https://openalex.org/W3174812640","https://openalex.org/W2164776165"],"abstract_inverted_index":{"Maize":[0],"(Zea":[1],"mays":[2],"L.)":[3],"is":[4,25,52],"a":[5,67,87,296],"highly":[6],"valued":[7],"crop":[8,330],"in":[9,15,20,63,79,90,192],"the":[10,47,64,74,94,98,203,223,274,277,304,328,335],"national":[11],"diet":[12],"of":[13,43,59,100,104,112,117,120,134,179,206,225,273,292,298,327],"Ethiopia,":[14],"general":[16],"and":[17,39,57,83,102,109,126,131,168,182,210,217,244,266,279,308,321,338],"southwest":[18,91],"Ethiopia":[19,92],"particular.":[21],"However,":[22],"its":[23],"productivity":[24],"constrained":[26],"by":[27,54,302],"low":[28,55],"plant-available":[29],"soil":[30,35],"nitrogen":[31,45,60,105,121,135,180,226,239,242],"due":[32],"to":[33,96,202,214],"depleting":[34],"organic":[36],"matter":[37],"content":[38],"high":[40],"leaching":[41],"losses":[42],"mineralized":[44],"during":[46,73],"growing":[48],"seasons.":[49],"This":[50],"problem":[51],"compounded":[53],"rates":[56],"ill-timing":[58],"fertilizer":[61,208,227,294],"applications":[62],"country.":[65],"Therefore,":[66],"field":[68,89],"experiment":[69],"was":[70,228],"carried":[71],"out":[72],"2017":[75],"main":[76],"cropping":[77],"season":[78],"Yeki,":[80],"Menit":[81],"Goldia":[82],"Adiyokaka":[84],"districts":[85],"on":[86,107],"farmer\u2019s":[88],"with":[93],"objectives":[95],"evaluate":[97],"effects":[99],"time":[101,178,205],"rate":[103,224,297],"application":[106,136,181,209,291],"yield":[108,110],"components":[111],"maize.":[113],"The":[114,230],"treatments":[115],"consisted":[116],"three":[118,307],"levels":[119,133],"rates,":[122,204],"i.e.":[123,138],"23,":[124],"46":[125,250,299],"69":[127],"N":[128,207,252,287,293],"kg":[129,251,300],"ha-1":[130,253,301],"five":[132],"timing,":[137],"1/2":[139],"at":[140,142,146,148,151,155,157,161,163,166,170,172,175,249,257,261,269,295,312,316,324],"planting+1/2":[141],"knee":[143,149,158,164,173,262,317],"height,":[144,159],"1/3":[145,154],"planting+1/3":[147],"height+1/3":[150],"near":[152,176],"tasseling,":[153,215],"planting+2/3":[156],"1/4":[160,169,255,267,310,322],"planting+2/4":[162],"height+1/4":[165],"tasseling":[167,177,270,325],"planting+1/4":[171],"height+2/4":[174],"unfertilized":[183],"plot":[184],"as":[185,222],"an":[186],"absolute":[187],"control":[188],"treatment":[189,288],"were":[190,220,247],"arranged":[191],"factorial":[193],"combinations.":[194],"Cob":[195],"number":[196],"per":[197],"plants":[198],"did":[199],"not":[200],"respond":[201],"their":[211],"interactions.":[212],"Days":[213],"slicking":[216],"physiological":[218],"maturity":[219],"delayed":[221],"increased.":[229],"highest":[231],"biomass":[232],"yield,":[233,235,237],"grain":[234,278],"straw":[236,280],"total":[238],"uptake,":[240],"apparent":[241],"recovery,":[243],"agronomic":[245],"efficiency":[246],"recorded":[248],"applied":[254],"dose":[256,260,268,305,311,315,323],"sowing,":[258],"2/4":[259,314],"height":[263,318],"growth":[264,319],"stage":[265,320,326],"stage.":[271],"Most":[272],"parameters":[275],"including":[276],"yields":[281],"exhibited":[282],"maximum":[283],"performance":[284],"under":[285],"this":[286],"level.":[289],"Thus,":[290],"splitting":[303],"into":[306],"applying":[309],"sowing":[313],"maize":[329],"can":[331],"be":[332],"recommended":[333],"for":[334],"study":[336],"areas":[337],"similar":[339],"agro":[340],"ecologies.":[341]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2}],"updated_date":"2025-11-06T04:12:42.849631","created_date":"2021-06-22T00:00:00"}