{"id":"https://openalex.org/W2189046086","doi":null,"title":"Influence of plant spacing and sowing time on yield of sunflower (Helianthus annus L.)","display_name":"Influence of plant spacing and sowing time on yield of sunflower (Helianthus annus L.)","publication_year":2014,"publication_date":"2014-01-01","ids":{"openalex":"https://openalex.org/W2189046086","mag":"2189046086"},"language":"en","primary_location":{"id":"pmh:oai:psasir.upm.edu.my:34198","doi":null,"is_oa":false,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/34198/","pdf_url":null,"source":{"id":"https://openalex.org/S4377196260","display_name":"Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I130343225","host_organization_name":"Universiti Putra Malaysia","host_organization_lineage":["https://openalex.org/I130343225"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},"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/A5018773375","display_name":"Ali Baghdadi","orcid":"https://orcid.org/0000-0002-3982-8601","observed_orcids":["https://orcid.org/0000-0002-3982-8601"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ali Baghdadi","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-3982-8601","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102329150","display_name":"Mohd Ridzwan Abd Halim","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Mohd Ridzwan Abd Halim","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066742079","display_name":"Alireza Nasiri","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Alireza Nasiri","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100903500","display_name":"Izham Ahmad","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Izham Ahmad","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5078411834","display_name":"Farzad Aslani","orcid":"https://orcid.org/0000-0003-0485-9800","observed_orcids":["https://orcid.org/0000-0003-0485-9800"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Farzad Aslani","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-0485-9800","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.4824,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.81608446,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":96},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12742","display_name":"Sunflower and Safflower Cultivation","score":1.0,"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/T12742","display_name":"Sunflower and Safflower Cultivation","score":1.0,"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/T12310","display_name":"Crop Yield and Soil Fertility","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"}},{"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/sunflower","display_name":"sunflower","score":0.9940000176429749},{"id":"https://openalex.org/keywords/plant-spacing","display_name":"plant spacing","score":0.6660000085830688},{"id":"https://openalex.org/keywords/sowing-date","display_name":"sowing date","score":0.8889999985694885},{"id":"https://openalex.org/keywords/seed-yield","display_name":"seed yield","score":0.6880000233650208},{"id":"https://openalex.org/keywords/yield-components","display_name":"yield components","score":0.9259999990463257},{"id":"https://openalex.org/keywords/harvest-index","display_name":"harvest index","score":0.9010000228881836},{"id":"https://openalex.org/keywords/row-spacing","display_name":"row spacing","score":0.8880000114440918},{"id":"https://openalex.org/keywords/straw-yield","display_name":"straw yield","score":0.7200000286102295}],"concepts":[{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.979826033115387},{"id":"https://openalex.org/C2779197568","wikidata":"https://www.wikidata.org/wiki/Q423986","display_name":"Sunflower","level":2,"score":0.8970212340354919},{"id":"https://openalex.org/C144938864","wikidata":"https://www.wikidata.org/wiki/Q4927286","display_name":"Randomized block design","level":2,"score":0.757563591003418},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.6904889345169067},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.606113076210022},{"id":"https://openalex.org/C2779587293","wikidata":"https://www.wikidata.org/wiki/Q7622360","display_name":"Straw","level":2,"score":0.5689746141433716},{"id":"https://openalex.org/C2780797469","wikidata":"https://www.wikidata.org/wiki/Q26949","display_name":"Helianthus","level":3,"score":0.5352550148963928},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.47373831272125244},{"id":"https://openalex.org/C25989453","wikidata":"https://www.wikidata.org/wiki/Q446746","display_name":"Leaf area index","level":2,"score":0.45776796340942383},{"id":"https://openalex.org/C144027150","wikidata":"https://www.wikidata.org/wiki/Q48803","display_name":"Horticulture","level":1,"score":0.38275906443595886},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.3655020296573639},{"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/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:psasir.upm.edu.my:34198","doi":null,"is_oa":false,"landing_page_url":"http://psasir.upm.edu.my/id/eprint/34198/","pdf_url":null,"source":{"id":"https://openalex.org/S4377196260","display_name":"Universiti Putra Malaysia Institutional Repository (Universiti Putra Malaysia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I130343225","host_organization_name":"Universiti Putra Malaysia","host_organization_lineage":["https://openalex.org/I130343225"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},{"id":"mag:2189046086","doi":null,"is_oa":false,"landing_page_url":"http://world-food.net/download/journals/2014-issue_2/2014-issue_2-agriculture/a77.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","id":"https://metadata.un.org/sdg/2","score":0.991100013256073}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W158976320","https://openalex.org/W278679130","https://openalex.org/W957530376","https://openalex.org/W1169187366","https://openalex.org/W1864540690","https://openalex.org/W1968279067","https://openalex.org/W1981743464","https://openalex.org/W1992279924","https://openalex.org/W2040281680","https://openalex.org/W2057339177","https://openalex.org/W2066909506","https://openalex.org/W2112993609","https://openalex.org/W2124284037","https://openalex.org/W2129530525","https://openalex.org/W2150761240","https://openalex.org/W2167316284","https://openalex.org/W2182160368","https://openalex.org/W2330116082","https://openalex.org/W2743967042","https://openalex.org/W2785647673","https://openalex.org/W3137165423"],"related_works":["https://openalex.org/W2739848287","https://openalex.org/W2607479059","https://openalex.org/W4409241268","https://openalex.org/W2994420596","https://openalex.org/W2567537136","https://openalex.org/W2742593225","https://openalex.org/W4387099726","https://openalex.org/W2111175369","https://openalex.org/W3137165423","https://openalex.org/W2182160368"],"abstract_inverted_index":{"Sunflower":[0],"production":[1],"can":[2],"be":[3],"increased":[4,175],"by":[5],"optimizing":[6],"agronomic":[7],"practices":[8],"that":[9],"affect":[10],"production.":[11,23],"Plant":[12],"spacing":[13,32,110,141,193,209],"and":[14,30,64,104,107,139,144,220,262,266],"sowing":[15,28],"time":[16],"are":[17],"two":[18,99],"important":[19],"factors":[20],"affecting":[21],"sunflower":[22,173,250],"To":[24],"determine":[25],"the":[26,44,59,71,77,186,194,204,227,232,242,256],"optimum":[27],"date":[29,138,153,167,230,244],"plant":[31,109,129,140,192,237],"of":[33,47,56,136,147,172,180,241,249,258],"native":[34,148],"sunflower,":[35],"an":[36],"experiment":[37,83],"was":[38,84,154,183],"conducted":[39],"for":[40],"one":[41],"year":[42,78],"at":[43,185,231],"Research":[45,49],"Farm":[46],"Agricultural":[48],"Center":[50],"in":[51,54,169,211,255,263],"Rasht,":[52],"located":[53],"north":[55],"Iran.":[57],"Climatically,":[58],"area":[60],"has":[61],"a":[62,88,198,253],"mild":[63],"humid":[65],"climate":[66],"with":[67,93,127],"variable":[68],"rainfall":[69,75],"throughout":[70],"year.":[72],"The":[73,82,96,131,150,164,214],"average":[74],"during":[76],"is":[79],"1359":[80],"mm.":[81],"laid":[85],"out":[86],"as":[87],"randomized":[89],"complete":[90],"block":[91],"design":[92],"three":[94],"replications.":[95],"treatments":[97],"were":[98,224],"planting":[100,137,152,166,188,196,229,243],"dates":[101],"(25th":[102],"April":[103],"15th":[105],"May),":[106],"four":[108],"(75":[111],"cm":[112,116,120,124,234,236],"\u00d720":[113,235],"cm,":[114,118,122],"65":[115],"\u00d723":[117],"50":[119],"\u00d730":[121],"35":[123],"\u00d743":[125],"cm)":[126],"equal":[128],"density.":[130],"results":[132],"showed":[133],"significant":[134],"effects":[135],"on":[142],"yield":[143,145,171,217,248],"components":[146],"sunflower.":[149],"earlier":[151],"shown":[155],"to":[156,203,252],"give":[157],"better":[158],"seed":[159,216,264,267],"yields":[160],"than":[161],"later":[162,165,205],"planting.":[163,206],"resulted":[168,210],"decreased":[170,246],"but":[174],"straw":[176],"yield.":[177,213,268],"Also":[178],"number":[179,257],"infertile":[181],"seeds/head":[182],"lower":[184],"early":[187,195,228],"time.":[189],"At":[190],"all":[191],"gave":[197],"superior":[199],"harvest":[200,221],"index":[201,222],"compared":[202],"Increasing":[207],"row":[208],"increasing":[212],"highest":[215],"(2489":[218],"kg/ha)":[219],"(18.93%)":[223],"obtained":[225],"from":[226],"75":[233],"spacing.":[238],"A":[239],"delay":[240],"significantly":[245],"grain":[247],"due":[251],"decrease":[254],"seeds":[259],"per":[260],"head":[261],"weight":[265]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}