{"id":"https://openalex.org/W4287149659","doi":"https://doi.org/10.17352/2455-815x.000163","title":"Enhancing maize yield in Ethiopia a meta-analysis","display_name":"Enhancing maize yield in Ethiopia a meta-analysis","publication_year":2022,"publication_date":"2022-07-12","ids":{"openalex":"https://openalex.org/W4287149659","doi":"https://doi.org/10.17352/2455-815x.000163"},"language":"en","primary_location":{"id":"doi:10.17352/2455-815x.000163","doi":"https://doi.org/10.17352/2455-815x.000163","is_oa":true,"landing_page_url":"https://doi.org/10.17352/2455-815x.000163","pdf_url":"https://www.peertechzpublications.org/articles/IJASFT-8-263.pdf","source":{"id":"https://openalex.org/S4210194189","display_name":"International Journal of Agricultural Science and Food Technology","issn_l":"2455-815X","issn":["2455-815X"],"is_oa":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Agricultural Science and Food Technology","raw_type":"journal-article"},"volume":null,"type":"review","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.peertechzpublications.org/articles/IJASFT-8-263.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5064065702","display_name":"Tefera Merga","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I52158045","display_name":"China Agricultural University","ror":"https://ror.org/04v3ywz14","country_code":"CN","type":"education","lineage":["https://openalex.org/I52158045"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Merga Tefera","raw_affiliation_strings":["China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China","Holeta polytechnic College, Department of Plant Science, P.O. Box 11, Holeta, Ethiopia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China","institution_ids":["https://openalex.org/I52158045"]},{"raw_affiliation_string":"Holeta polytechnic College, Department of Plant Science, P.O. Box 11, Holeta, Ethiopia","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"Zhang Weifang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I52158045","display_name":"China Agricultural University","ror":"https://ror.org/04v3ywz14","country_code":"CN","type":"education","lineage":["https://openalex.org/I52158045"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhang Weifang","raw_affiliation_strings":["China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China","institution_ids":["https://openalex.org/I52158045"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027562132","display_name":"Shuaixiang Zhao","orcid":"https://orcid.org/0000-0001-6168-4133","observed_orcids":["https://orcid.org/0000-0001-6168-4133"]},"institutions":[{"id":"https://openalex.org/I52158045","display_name":"China Agricultural University","ror":"https://ror.org/04v3ywz14","country_code":"CN","type":"education","lineage":["https://openalex.org/I52158045"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuaixiang Zhao","raw_affiliation_strings":["China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China","institution_ids":["https://openalex.org/I52158045"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049350933","display_name":"Zhiping Duan","orcid":"https://orcid.org/0000-0002-5017-1022","observed_orcids":["https://orcid.org/0000-0002-5017-1022"]},"institutions":[{"id":"https://openalex.org/I52158045","display_name":"China Agricultural University","ror":"https://ror.org/04v3ywz14","country_code":"CN","type":"education","lineage":["https://openalex.org/I52158045"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiping Duan","raw_affiliation_strings":["China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"China Agricultural University, School of Resource and Environmental Science, P. O Box 100083 Beijing, China","institution_ids":["https://openalex.org/I52158045"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5064065702"],"corresponding_institution_ids":["https://openalex.org/I52158045"],"apc_list":null,"apc_paid":null,"fwci":0.0308,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.00952381,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"8","issue":"3","first_page":"193","last_page":"201"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12310","display_name":"Crop Yield and Soil Fertility","score":0.9994999766349792,"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":0.9994999766349792,"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":0.00019999999494757503,"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/T13628","display_name":"Agricultural Productivity and Crop Improvement","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/maize-yield","display_name":"maize yield","score":0.972000002861023},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.9380000233650208},{"id":"https://openalex.org/keywords/plant-density","display_name":"plant density","score":0.9679999947547913},{"id":"https://openalex.org/keywords/yield-response","display_name":"yield response","score":0.6700000166893005},{"id":"https://openalex.org/keywords/fertilizer-dose","display_name":"fertilizer dose","score":0.44999998807907104},{"id":"https://openalex.org/keywords/soil-type","display_name":"soil type","score":0.7400000095367432},{"id":"https://openalex.org/keywords/loamy-soil","display_name":"loam soil","score":0.7879999876022339},{"id":"https://openalex.org/keywords/ethiopia","display_name":"Ethiopia","score":0.4129999876022339}],"concepts":[{"id":"https://openalex.org/C113578266","wikidata":"https://www.wikidata.org/wiki/Q1131303","display_name":"Loam","level":3,"score":0.8732268810272217},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.7503153681755066},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.6993603110313416},{"id":"https://openalex.org/C2991904373","wikidata":"https://www.wikidata.org/wiki/Q102346249","display_name":"Plant density","level":3,"score":0.667983889579773},{"id":"https://openalex.org/C88972607","wikidata":"https://www.wikidata.org/wiki/Q2666904","display_name":"Human fertilization","level":2,"score":0.6149383783340454},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5493065714836121},{"id":"https://openalex.org/C855514","wikidata":"https://www.wikidata.org/wiki/Q1665869","display_name":"Interaction","level":2,"score":0.5354476571083069},{"id":"https://openalex.org/C2992211155","wikidata":"https://www.wikidata.org/wiki/Q889514","display_name":"Grain yield","level":2,"score":0.5018610954284668},{"id":"https://openalex.org/C137580998","wikidata":"https://www.wikidata.org/wiki/Q235352","display_name":"Crop","level":2,"score":0.4737970232963562},{"id":"https://openalex.org/C93973069","wikidata":"https://www.wikidata.org/wiki/Q899249","display_name":"Bulk density","level":3,"score":0.4664086103439331},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4648154675960541},{"id":"https://openalex.org/C2993605384","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Nitrogen fertilizer","level":3,"score":0.4243600368499756},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.2511005401611328},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.23813316226005554},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.2150723934173584},{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.12346777319908142},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.08633524179458618},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.08243238925933838},{"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":"doi:10.17352/2455-815x.000163","doi":"https://doi.org/10.17352/2455-815x.000163","is_oa":true,"landing_page_url":"https://doi.org/10.17352/2455-815x.000163","pdf_url":"https://www.peertechzpublications.org/articles/IJASFT-8-263.pdf","source":{"id":"https://openalex.org/S4210194189","display_name":"International Journal of Agricultural Science and Food Technology","issn_l":"2455-815X","issn":["2455-815X"],"is_oa":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Agricultural Science and Food Technology","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.17352/2455-815x.000163","doi":"https://doi.org/10.17352/2455-815x.000163","is_oa":true,"landing_page_url":"https://doi.org/10.17352/2455-815x.000163","pdf_url":"https://www.peertechzpublications.org/articles/IJASFT-8-263.pdf","source":{"id":"https://openalex.org/S4210194189","display_name":"International Journal of Agricultural Science and Food Technology","issn_l":"2455-815X","issn":["2455-815X"],"is_oa":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Agricultural Science and Food Technology","raw_type":"journal-article"},"sustainable_development_goals":[{"score":1.0,"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger"}],"study_designs":[{"id":"https://openalex.org/study-designs/systematic-review","display_name":"Systematic Review"},{"id":"https://openalex.org/study-designs/meta-analysis","display_name":"Meta-Analysis"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320321131","display_name":"China Agricultural University","ror":"https://ror.org/04v3ywz14"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4287149659.pdf","grobid_xml":"https://content.openalex.org/works/W4287149659.grobid-xml"},"referenced_works_count":26,"referenced_works":["https://openalex.org/W1976084278","https://openalex.org/W2009980062","https://openalex.org/W2018112236","https://openalex.org/W2043778196","https://openalex.org/W2100149710","https://openalex.org/W2155260468","https://openalex.org/W2164776165","https://openalex.org/W2545803026","https://openalex.org/W2560389640","https://openalex.org/W2609826092","https://openalex.org/W2626399891","https://openalex.org/W2773913929","https://openalex.org/W2788011083","https://openalex.org/W2795724992","https://openalex.org/W2800097792","https://openalex.org/W2923208409","https://openalex.org/W2971553540","https://openalex.org/W2981463031","https://openalex.org/W2998188361","https://openalex.org/W3004821966","https://openalex.org/W3104166868","https://openalex.org/W3111065036","https://openalex.org/W3111373837","https://openalex.org/W3119813357","https://openalex.org/W3120767528","https://openalex.org/W3124298358"],"related_works":["https://openalex.org/W2800097792","https://openalex.org/W4390813967","https://openalex.org/W4386847071","https://openalex.org/W3154575343","https://openalex.org/W3042119934","https://openalex.org/W2004978739","https://openalex.org/W4312758379","https://openalex.org/W2164776165","https://openalex.org/W2042223198","https://openalex.org/W7155005024"],"abstract_inverted_index":{"Accurate":[0],"nitrogen":[1],"(N)":[2],"fertilization":[3,20],"and":[4,22,49,159,179,187],"optimum":[5],"plant":[6,23,50,88,160,181],"density":[7,24,51,89,133,161,182],"increase":[8],"crop":[9],"yields.":[10],"In":[11,147],"this":[12],"study,":[13],"I":[14,53],"report":[15],"the":[16,41,55,66,69,99,105,149,164],"effects":[17],"of":[18,46,57,74,104,131,152],"N":[19,47,61,75,106,157,174],"rate":[21,107,158,175],"on":[25,121,144],"maize":[26,58,79,91,109,138,153],"yield":[27,70,151],"in":[28,38],"a":[29,172],"meta-analysis,":[30],"by":[31,81,93,111,140],"using":[32,68,171],"observations":[33],"from":[34],"15":[35],"studies":[36],"conducted":[37],"Ethiopia":[39],"since":[40],"2000s":[42],"for":[43],"possible":[44,168],"refinement":[45],"fertilizer":[48,76],"recommendations.":[52],"assessed":[54],"response":[56,71],"to":[59,65,86,98,125,163,169,189,192],"different":[60],"rates":[62],"ha\u22121":[63],"compared":[64,85,97,124],"control":[67,126],"approach.":[72],"Application":[73],"significantly":[77],"increased":[78,90,108,137,154],"yields":[80,92,110,139],"31.5%":[82],"-":[83,95,113,119,142],"65.9%":[84],"control.":[87,100],"42%":[94],"72.4%":[96],"The":[101,128],"interaction":[102,129],"effect":[103,130],"27.6%":[112],"95.9%,":[114],"with":[115,134,155,176],"Plant":[116,132],"density,":[117],"58.7%":[118],"152%":[120],"loam":[122,145],"soil,":[123],"yield.":[127,196],"soil":[135],"type":[136],"47%":[141],"108%":[143],"soil.":[146],"conclusion,":[148],"grain":[150,195],"increasing":[156],"up":[162],"optimum.":[165],"Therefore,":[166],"it\u2019s":[167],"recommend":[170],"high":[173,194],"both":[177],"low":[178],"medium":[180],"(<":[183],"45,000":[184],"plants":[185],"ha-1)":[186,191],"(45,000":[188],"65,000plants":[190],"harvest":[193]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2022-07-25T00:00:00"}
