{"id":"https://openalex.org/W3017755289","doi":"https://doi.org/10.21608/jpp.2011.85461","title":"INFLUENCE OF SEEDLING AGE AND NITROGEN FERTILIZER LEVELS ON GROWTH, GRAIN YIELD, N-UPTAKE AND N-USE EFFICIENCY OF HYBRID RICE VARIETIES.","display_name":"INFLUENCE OF SEEDLING AGE AND NITROGEN FERTILIZER LEVELS ON GROWTH, GRAIN YIELD, N-UPTAKE AND N-USE EFFICIENCY OF HYBRID RICE VARIETIES.","publication_year":2011,"publication_date":"2011-01-01","ids":{"openalex":"https://openalex.org/W3017755289","doi":"https://doi.org/10.21608/jpp.2011.85461","mag":"3017755289"},"language":"en","primary_location":{"id":"doi:10.21608/jpp.2011.85461","doi":"https://doi.org/10.21608/jpp.2011.85461","is_oa":true,"landing_page_url":"https://doi.org/10.21608/jpp.2011.85461","pdf_url":"https://jpp.journals.ekb.eg/article_85461_4ee776703b2333403a2773af725da87a.pdf","source":{"id":"https://openalex.org/S4210225204","display_name":"Journal of Plant Production","issn_l":"2090-3669","issn":["2090-3669","2090-374X"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj"],"host_organization":"https://openalex.org/P4324392721","host_organization_name":"Mansoura University","host_organization_lineage":["https://openalex.org/P4324392721"],"host_organization_lineage_names":["Mansoura University"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Plant Production","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://jpp.journals.ekb.eg/article_85461_4ee776703b2333403a2773af725da87a.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5033766618","display_name":"R. Gorgy","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210165448","display_name":"Agricultural Research Center","ror":"https://ror.org/05hcacp57","country_code":"EG","type":"facility","lineage":["https://openalex.org/I4210165448"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"R. Gorgy","raw_affiliation_strings":["Rice Res. and Training Center, Field Crops Res. Inst., ARC, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rice Res. and Training Center, Field Crops Res. Inst., ARC, Egypt","institution_ids":["https://openalex.org/I4210165448"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017536764","display_name":"I. S. El-Refaee","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210165448","display_name":"Agricultural Research Center","ror":"https://ror.org/05hcacp57","country_code":"EG","type":"facility","lineage":["https://openalex.org/I4210165448"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"I. El-Refaee","raw_affiliation_strings":["Rice Res. and Training Center, Field Crops Res. Inst., ARC, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rice Res. and Training Center, Field Crops Res. Inst., ARC, Egypt","institution_ids":["https://openalex.org/I4210165448"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045005056","display_name":"M.M.I. Nassr","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210165448","display_name":"Agricultural Research Center","ror":"https://ror.org/05hcacp57","country_code":"EG","type":"facility","lineage":["https://openalex.org/I4210165448"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"M. Nassr","raw_affiliation_strings":["Soils, Water and Environment Res. Inst., ARC, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Soils, Water and Environment Res. Inst., ARC, Egypt","institution_ids":["https://openalex.org/I4210165448"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210165448"],"apc_list":null,"apc_paid":null,"fwci":0.7549,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.73498789,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":"2","issue":"1","first_page":"67","last_page":"80"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.9990000128746033,"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/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.9990000128746033,"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/T12294","display_name":"Agricultural Science and Fertilization","score":0.0005000000237487257,"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/T12310","display_name":"Crop Yield and Soil Fertility","score":0.0003000000142492354,"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/hybrid-rice","display_name":"hybrid rice","score":0.9760000109672546},{"id":"https://openalex.org/keywords/seedling-age","display_name":"seedling age","score":0.9559999704360962},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.722000002861023},{"id":"https://openalex.org/keywords/nitrogen-use-efficiency","display_name":"nitrogen use efficiency","score":0.9810000061988831},{"id":"https://openalex.org/keywords/nitrogen-uptake","display_name":"nitrogen uptake","score":0.9269999861717224},{"id":"https://openalex.org/keywords/grain-yield","display_name":"grain yield","score":0.9810000061988831},{"id":"https://openalex.org/keywords/rice-cultivars","display_name":"rice varieties","score":0.5580000281333923},{"id":"https://openalex.org/keywords/dry-matter-production","display_name":"dry matter production","score":0.7519999742507935},{"id":"https://openalex.org/keywords/leaf-area-index","display_name":"leaf area index","score":0.703000009059906},{"id":"https://openalex.org/keywords/harvest-index","display_name":"harvest index","score":0.8980000019073486},{"id":"https://openalex.org/keywords/nitrogen-content","display_name":"nitrogen content","score":0.4230000078678131},{"id":"https://openalex.org/keywords/variety-by-fertilizer-interaction","display_name":"variety-by-fertilizer interaction","score":0.6060000061988831},{"id":"https://openalex.org/keywords/transplanting","display_name":"transplanting","score":0.4729999899864197},{"id":"https://openalex.org/keywords/split-nitrogen-application","display_name":"split nitrogen application","score":0.5680000185966492},{"id":"https://openalex.org/keywords/grain-yield-components","display_name":"grain yield components","score":0.6669999957084656},{"id":"https://openalex.org/keywords/panicle-weight","display_name":"panicle weight","score":0.7870000004768372},{"id":"https://openalex.org/keywords/1000-grain-weight","display_name":"1000-grain weight","score":0.9150000214576721},{"id":"https://openalex.org/keywords/filled-grains","display_name":"filled grains","score":0.5659999847412109},{"id":"https://openalex.org/keywords/leaf-nitrogen-content","display_name":"leaf nitrogen content","score":0.36800000071525574}],"concepts":[{"id":"https://openalex.org/C2776096895","wikidata":"https://www.wikidata.org/wiki/Q1385709","display_name":"Seedling","level":2,"score":0.8606109619140625},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.7323912978172302},{"id":"https://openalex.org/C2992211155","wikidata":"https://www.wikidata.org/wiki/Q889514","display_name":"Grain yield","level":2,"score":0.682404637336731},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.6301987171173096},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.6091629862785339},{"id":"https://openalex.org/C2993605384","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Nitrogen fertilizer","level":3,"score":0.5913679003715515},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5282325744628906},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3447592258453369},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.3009616434574127},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.21509835124015808},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.17491492629051208},{"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":2,"locations":[{"id":"doi:10.21608/jpp.2011.85461","doi":"https://doi.org/10.21608/jpp.2011.85461","is_oa":true,"landing_page_url":"https://doi.org/10.21608/jpp.2011.85461","pdf_url":"https://jpp.journals.ekb.eg/article_85461_4ee776703b2333403a2773af725da87a.pdf","source":{"id":"https://openalex.org/S4210225204","display_name":"Journal of Plant Production","issn_l":"2090-3669","issn":["2090-3669","2090-374X"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj"],"host_organization":"https://openalex.org/P4324392721","host_organization_name":"Mansoura University","host_organization_lineage":["https://openalex.org/P4324392721"],"host_organization_lineage_names":["Mansoura University"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Plant Production","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:fd23418f546549079ca30243092b5390","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/fd23418f546549079ca30243092b5390","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"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":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Plant Production, Vol 2, Iss 1, Pp 67-80 (2011)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.21608/jpp.2011.85461","doi":"https://doi.org/10.21608/jpp.2011.85461","is_oa":true,"landing_page_url":"https://doi.org/10.21608/jpp.2011.85461","pdf_url":"https://jpp.journals.ekb.eg/article_85461_4ee776703b2333403a2773af725da87a.pdf","source":{"id":"https://openalex.org/S4210225204","display_name":"Journal of Plant Production","issn_l":"2090-3669","issn":["2090-3669","2090-374X"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj"],"host_organization":"https://openalex.org/P4324392721","host_organization_name":"Mansoura University","host_organization_lineage":["https://openalex.org/P4324392721"],"host_organization_lineage_names":["Mansoura University"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Plant Production","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger","score":1.0}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3017755289.pdf","grobid_xml":"https://content.openalex.org/works/W3017755289.grobid-xml"},"referenced_works_count":7,"referenced_works":["https://openalex.org/W2052020031","https://openalex.org/W2145361395","https://openalex.org/W2319410825","https://openalex.org/W2493818528","https://openalex.org/W2498139366","https://openalex.org/W2780224214","https://openalex.org/W4249429540"],"related_works":["https://openalex.org/W2182195398","https://openalex.org/W2990146810","https://openalex.org/W7215956872","https://openalex.org/W4301253222","https://openalex.org/W2266144838","https://openalex.org/W2155766215","https://openalex.org/W7126009888","https://openalex.org/W4382864457","https://openalex.org/W3026972180","https://openalex.org/W2808411147"],"abstract_inverted_index":{"Two":[0],"field":[1],"experiments":[2],"were":[3,62,168,172],"conducted":[4],"at":[5,211,327],"Rice":[6],"Research":[7],"and":[8,18,36,54,58,85,114,116,142,150,187,215,228,232,254,267,279,288,297,307],"Training":[9],"Center":[10],"(RRTC),":[11],"Sakha,":[12],"Kafr":[13],"El-Sheikh,":[14],"Egypt,":[15],"in":[16,193,200,334],"2008":[17],"2009":[19],"growing":[20],"seasons.":[21],"The":[22,64,162,248,292],"objective":[23],"of":[24,43,95,98,101,127,144,165,305,330],"this":[25],"research":[26],"was":[27,208],"aimed":[28],"to":[29,39,196,244,338],"find":[30],"out":[31],"the":[32,87,224,239],"optimum":[33],"seedling":[34,255,295],"age":[35,256,296],"nitrogen":[37,59,147,180,240,298],"levels":[38,182,214,282,299],"obtain":[40],"maximum":[41,340],"production":[42],"hybrid":[44,78,251,276,315],"rice":[45,79,252,277,316],"varieties":[46,253,278,317],"under":[47],"normal":[48],"soil.":[49],"Growth":[50],"analysis,":[51],"grain":[52,107,137,231,265,286,308,341],"yield":[53,186,266,287,342],"its":[55,145,188],"components,":[56],"N-uptake":[57,111,229,268,289],"use":[60,151,205],"efficiency":[61,118,152,206],"determined.":[63],"most":[65,143],"important":[66],"obtained":[67,169],"results":[68],"could":[69,311],"be":[70,312,319],"summarized":[71],"as":[72],"follows:":[73],"In":[74],"both":[75],"seasons,":[76],"SK2034H":[77],"variety":[80],"significantly":[81,183,209,217,235,257,300],"exceeded":[82],"SK2058H":[83],"variety.":[84],"recorded":[86],"highest":[88],"dry":[89,128,259,284,302],"matter":[90,129],"production,":[91],"plant":[92,135],"height,":[93,136],"number":[94,97,100,304],"panicles/m2,":[96],"spikelets/panicle,":[99],"filled":[102],"grains":[103,113],"(%),":[104],"panicle":[105,261],"weight,":[106,262,264],"yield,":[108,138],"N":[109,213,220,280],"content,":[110,148],"for":[112,230,269,283,290],"straw":[115,233],"N-use":[117],"(NUE).":[119],"25":[120,323],"day":[121,160,176],"old":[122,155,177],"seedlings":[123,156],"had":[124],"higher":[125,210],"values":[126,164],"(DM),":[130],"leaf":[131],"area":[132],"index":[133,140],"(LAI),":[134],"harvest":[139],"(HI),":[141],"attributes,":[146],"N-uptake,":[149],"(NUE)":[153,207],"than":[154],"35":[157],"or":[158],"40":[159,175],"old.":[161],"minimum":[163],"these":[166,202],"traits":[167],"when":[170],"plants":[171],"transplanted":[173,320],"with":[174,218,321],"seedlings.":[178],"Increasing":[179],"fertilizer":[181,221,241,281],"improved":[184],"growth,":[185],"components.":[189],"Each":[190],"unit":[191,344],"increase":[192,199],"N-levels":[194],"led":[195],"a":[197,328],"significant":[198,272],"all":[201],"traits.":[203],"Nitrogen":[204],"lower":[212],"decreased":[216],"increasing":[219,238],"levels.":[222],"On":[223],"other":[225],"hand,":[226],"N-content":[227],"yields":[234],"increased":[236],"by":[237],"level":[242],"up":[243],"220":[245,331],"kg":[246,332],"N/ha.":[247],"interaction":[249,273,293],"between":[250,275,294],"affected":[258],"matter,":[260,285,303],"1000-grain":[263],"grains.":[270,291],"A":[271],"effect":[274],"affect":[301],"spikelets/panicle":[306],"yield.":[309],"It":[310],"concluded":[313],"that":[314],"must":[318],"seedling,":[322],"days":[324],"old,":[325],"fertilized":[326],"rate":[329],"N/ha":[333],"three":[335],"equal":[336],"splits":[337],"get":[339],"per":[343],"area.":[345]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2020-05-01T00:00:00"}
