{"id":"https://openalex.org/W2064823737","doi":"https://doi.org/10.4141/cjps73-057","title":"USE OF FACTOR ANALYSIS TO INVESTIGATE RELATIONS BETWEEIS ENVIRONMENTAL VARIABLES AND FORAGE YIELD","display_name":"USE OF FACTOR ANALYSIS TO INVESTIGATE RELATIONS BETWEEIS ENVIRONMENTAL VARIABLES AND FORAGE YIELD","publication_year":1973,"publication_date":"1973-04-01","ids":{"openalex":"https://openalex.org/W2064823737","doi":"https://doi.org/10.4141/cjps73-057","mag":"2064823737"},"language":"en","primary_location":{"id":"doi:10.4141/cjps73-057","doi":"https://doi.org/10.4141/cjps73-057","is_oa":false,"landing_page_url":"https://doi.org/10.4141/cjps73-057","pdf_url":null,"source":{"id":"https://openalex.org/S34720450","display_name":"Canadian Journal of Plant Science","issn_l":"0008-4220","issn":["0008-4220","1918-1833"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-2"],"host_organization":"https://openalex.org/P4310312929","host_organization_name":"Canadian Science Publishing","host_organization_lineage":["https://openalex.org/P4310312929"],"host_organization_lineage_names":["Canadian Science Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Canadian Journal of Plant Science","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"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/A5072701558","display_name":"J. Waddington","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"J. WADDINGTON","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5072701558"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"53","issue":"2","first_page":"309","last_page":"316"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13591","display_name":"Pasture and Agricultural Systems","score":0.3167000114917755,"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/T13591","display_name":"Pasture and Agricultural Systems","score":0.3167000114917755,"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":0.29660001397132874,"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/T11229","display_name":"Genetics and Plant Breeding","score":0.07410000264644623,"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/forage-yield","display_name":"forage yield","score":0.9919999837875366},{"id":"https://openalex.org/keywords/environmental-variables","display_name":"environmental variables","score":0.8370000123977661},{"id":"https://openalex.org/keywords/grass-legume-mixtures","display_name":"grass-legume mixtures","score":0.8809999823570251},{"id":"https://openalex.org/keywords/ambient-energy","display_name":"ambient energy","score":0.6430000066757202},{"id":"https://openalex.org/keywords/degree-days","display_name":"degree-days","score":0.8880000114440918},{"id":"https://openalex.org/keywords/sunshine-duration","display_name":"sunshine duration","score":0.6600000262260437},{"id":"https://openalex.org/keywords/solar-radiation","display_name":"solar radiation","score":0.8050000071525574},{"id":"https://openalex.org/keywords/soil-fertility","display_name":"soil fertility","score":0.9089999794960022},{"id":"https://openalex.org/keywords/soil-nutrients","display_name":"soil nutrients","score":0.8420000076293945},{"id":"https://openalex.org/keywords/soil-moisture","display_name":"soil moisture","score":0.7979999780654907},{"id":"https://openalex.org/keywords/rainfall","display_name":"rainfall","score":0.8130000233650208},{"id":"https://openalex.org/keywords/regrowth","display_name":"regrowth","score":0.7490000128746033},{"id":"https://openalex.org/keywords/crop-age","display_name":"crop age","score":0.6140000224113464},{"id":"https://openalex.org/keywords/poaceae","display_name":"Poaceae","score":0.5550000071525574},{"id":"https://openalex.org/keywords/fabaceae","display_name":"Fabaceae","score":0.875}],"concepts":[{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.6114381551742554},{"id":"https://openalex.org/C2779370140","wikidata":"https://www.wikidata.org/wiki/Q13377214","display_name":"Forage","level":2,"score":0.5950831174850464},{"id":"https://openalex.org/C2776632002","wikidata":"https://www.wikidata.org/wiki/Q145909","display_name":"Legume","level":2,"score":0.5458983182907104},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5420961380004883},{"id":"https://openalex.org/C142796444","wikidata":"https://www.wikidata.org/wiki/Q181394","display_name":"Nutrient","level":2,"score":0.518661618232727},{"id":"https://openalex.org/C38774213","wikidata":"https://www.wikidata.org/wiki/Q202080","display_name":"Soil fertility","level":3,"score":0.5009825229644775},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.471366286277771},{"id":"https://openalex.org/C137580998","wikidata":"https://www.wikidata.org/wiki/Q235352","display_name":"Crop","level":2,"score":0.44649165868759155},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.24800768494606018},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.23668316006660461},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.16081571578979492},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.14726975560188293},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07961833477020264},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4141/cjps73-057","doi":"https://doi.org/10.4141/cjps73-057","is_oa":false,"landing_page_url":"https://doi.org/10.4141/cjps73-057","pdf_url":null,"source":{"id":"https://openalex.org/S34720450","display_name":"Canadian Journal of Plant Science","issn_l":"0008-4220","issn":["0008-4220","1918-1833"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-2"],"host_organization":"https://openalex.org/P4310312929","host_organization_name":"Canadian Science Publishing","host_organization_lineage":["https://openalex.org/P4310312929"],"host_organization_lineage_names":["Canadian Science Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Canadian Journal of Plant Science","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2","score":0.9208999872207642}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1537897551","https://openalex.org/W1966382716","https://openalex.org/W1974421854","https://openalex.org/W1979247291","https://openalex.org/W1984601292","https://openalex.org/W1998196429","https://openalex.org/W2027899163","https://openalex.org/W2029002539","https://openalex.org/W2039675315","https://openalex.org/W2064788675","https://openalex.org/W2088232470","https://openalex.org/W2100716970","https://openalex.org/W2556146423"],"related_works":["https://openalex.org/W4317206917","https://openalex.org/W313491091","https://openalex.org/W3012272271","https://openalex.org/W17778079","https://openalex.org/W2915631017","https://openalex.org/W2348551738","https://openalex.org/W2332384058","https://openalex.org/W1975857711","https://openalex.org/W2254448336","https://openalex.org/W3107964055"],"abstract_inverted_index":{"Yields":[0],"obtained":[1],"over":[2],"a":[3,46,64],"17-yr":[4],"period":[5],"from":[6,98,138],"three":[7,12],"grasses,":[8],"one":[9],"legume,":[10],"and":[11,34,50,112,122],"grass\u2013legume":[13],"mixtures,":[14],"together":[15],"with":[16,93],"six":[17],"environmental":[18,56],"variables,":[19],"were":[20,51,89],"subjected":[21],"to":[22,124,133],"factor":[23,83,131],"analysis.":[24],"Three":[25],"of":[26,31,41,55,59,76,102,130],"the":[27,39,42,68,74,77,82,94,99,103,125],"variables":[28,140],"(degree-days,":[29],"hours":[30],"bright":[32],"sunshine,":[33],"solar":[35],"short-wave":[36],"energy":[37],"at":[38],"top":[40],"earth\u2019s":[43],"atmosphere)":[44],"showed":[45],"very":[47],"close":[48],"interrelation":[49],"interpreted":[52],"as":[53,63,73],"measures":[54],"energy.":[57],"Age":[58],"crop":[60],"was":[61,105,116],"classed":[62],"soil":[65,70,110,113],"fertility":[66],"factor;":[67],"available":[69],"nutrients":[71],"decreased":[72],"age":[75],"forage":[78],"stand":[79],"increased.":[80],"In":[81],"patterns":[84],"developed,":[85],"differences":[86],"between":[87],"crops":[88],"small":[90],"in":[91],"comparison":[92],"overall":[95],"similarities.":[96],"Production":[97],"first":[100],"harvest":[101],"season":[104],"equally":[106],"dependent":[107],"on":[108],"energy,":[109],"moisture,":[111],"fertility.":[114],"Regrowth":[115],"controlled":[117],"principally":[118],"by":[119],"rainfall":[120],"during":[121],"prior":[123],"regrowth":[126],"period.":[127],"The":[128],"ability":[129],"analysis":[132],"extract":[134],"relatively":[135],"simple":[136],"relations":[137],"interrelated":[139],"is":[141],"clearly":[142],"demonstrated.":[143]},"counts_by_year":[],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2016-06-24T00:00:00"}