{"id":"https://openalex.org/W2015633320","doi":"https://doi.org/10.2134/agronj1957.00021962004900110004x","title":"A Statistical Study of Several Methods Used in Determining the Botanical Composition of a Sward: II. A Study of Several Forage Mixtures1","display_name":"A Statistical Study of Several Methods Used in Determining the Botanical Composition of a Sward: II. A Study of Several Forage Mixtures1","publication_year":1957,"publication_date":"1957-11-01","ids":{"openalex":"https://openalex.org/W2015633320","doi":"https://doi.org/10.2134/agronj1957.00021962004900110004x","mag":"2015633320"},"language":"en","primary_location":{"id":"doi:10.2134/agronj1957.00021962004900110004x","doi":"https://doi.org/10.2134/agronj1957.00021962004900110004x","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronj1957.00021962004900110004x","pdf_url":null,"source":{"id":"https://openalex.org/S139950591","display_name":"Agronomy Journal","issn_l":"0002-1962","issn":["0002-1962","1072-9623","1435-0645"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Agronomy Journal","raw_type":"journal-article"},"volume":null,"type":"article","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/A5074833999","display_name":"R. W. VanKeuren","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R. W. VanKeuren","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5015355374","display_name":"H. L. Ahlgren","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1326158516","display_name":"Wisconsin Alumni Research Foundation","ror":"https://ror.org/00hwxbz16","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I1326158516"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"H. L. Ahlgren","raw_affiliation_strings":["Assistant Agronomist, Irrigation Exp. Sta., Prosser, Washington, formerly Wisconsin Alumni Research Foundation Research Assistant in Agronomy; and Professor of Agronomy and Associate Director of Extension, Wisconsin Agr. Exp. Sta., Madison, Wis. The authors are grateful to Dr. J. H. Torrie of the Wisconsin Agr. Exp. Sta. for assistance and guidance in the statistical analysis of data","Assistant Agronomist, Irrigation Exp. Sta., Prosser, Washington, formerly Wisconsin Alumni Research Foundation Research Assistant in Agronomy","Professor of Agronomy and Associate Director of Extension, Wisconsin Agr. Exp. Sta., Madison, Wis. The authors are grateful to Dr. J. H. Torrie of the Wisconsin Agr. Exp. Sta. for assistance and guidance in the statistical analysis of data"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Assistant Agronomist, Irrigation Exp. Sta., Prosser, Washington, formerly Wisconsin Alumni Research Foundation Research Assistant in Agronomy; and Professor of Agronomy and Associate Director of Extension, Wisconsin Agr. Exp. Sta., Madison, Wis. The authors are grateful to Dr. J. H. Torrie of the Wisconsin Agr. Exp. Sta. for assistance and guidance in the statistical analysis of data","institution_ids":["https://openalex.org/I1326158516"]},{"raw_affiliation_string":"Assistant Agronomist, Irrigation Exp. Sta., Prosser, Washington, formerly Wisconsin Alumni Research Foundation Research Assistant in Agronomy","institution_ids":["https://openalex.org/I1326158516"]},{"raw_affiliation_string":"Professor of Agronomy and Associate Director of Extension, Wisconsin Agr. Exp. Sta., Madison, Wis. The authors are grateful to Dr. J. H. Torrie of the Wisconsin Agr. Exp. Sta. for assistance and guidance in the statistical analysis of data","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1800,"currency":"USD","value_usd":1800},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.16012085,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"49","issue":"11","first_page":"581","last_page":"585"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13591","display_name":"Pasture and Agricultural Systems","score":0.8217999935150146,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"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":0.8217999935150146,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"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/T10005","display_name":"Ecology and Vegetation Dynamics Studies","score":0.033399999141693115,"subfield":{"id":"https://openalex.org/subfields/2309","display_name":"Nature and Landscape Conservation"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14365","display_name":"Leaf Properties and Growth Measurement","score":0.028300000354647636,"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/sward-botanical-composition","display_name":"sward botanical composition","score":0.796999990940094},{"id":"https://openalex.org/keywords/forage-mixtures","display_name":"forage mixtures","score":0.9660000205039978},{"id":"https://openalex.org/keywords/correction-factors","display_name":"correction factors","score":0.8330000042915344},{"id":"https://openalex.org/keywords/regression-equations","display_name":"regression equations","score":0.7590000033378601},{"id":"https://openalex.org/keywords/forage-yield-estimation","display_name":"forage yield estimation","score":0.8830000162124634},{"id":"https://openalex.org/keywords/floristic-composition","display_name":"floristic composition","score":0.3919999897480011}],"concepts":[{"id":"https://openalex.org/C107394435","wikidata":"https://www.wikidata.org/wiki/Q1300585","display_name":"Quadrat","level":3,"score":0.9153904914855957},{"id":"https://openalex.org/C2779370140","wikidata":"https://www.wikidata.org/wiki/Q13377214","display_name":"Forage","level":2,"score":0.7823914289474487},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.6834582686424255},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.607803225517273},{"id":"https://openalex.org/C152877465","wikidata":"https://www.wikidata.org/wiki/Q208042","display_name":"Regression analysis","level":2,"score":0.5485764145851135},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.5028206706047058},{"id":"https://openalex.org/C83546350","wikidata":"https://www.wikidata.org/wiki/Q1139051","display_name":"Regression","level":2,"score":0.49994444847106934},{"id":"https://openalex.org/C40231798","wikidata":"https://www.wikidata.org/wiki/Q1333743","display_name":"Composition (language)","level":2,"score":0.4860966205596924},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.46996304392814636},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.4297691583633423},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.20917534828186035},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.19770842790603638},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06395331025123596},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.061820030212402344},{"id":"https://openalex.org/C2778091200","wikidata":"https://www.wikidata.org/wiki/Q42295","display_name":"Shrub","level":2,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2134/agronj1957.00021962004900110004x","doi":"https://doi.org/10.2134/agronj1957.00021962004900110004x","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronj1957.00021962004900110004x","pdf_url":null,"source":{"id":"https://openalex.org/S139950591","display_name":"Agronomy Journal","issn_l":"0002-1962","issn":["0002-1962","1072-9623","1435-0645"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Agronomy Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger","score":0.6735000014305115}],"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/W2004964101","https://openalex.org/W1966951865","https://openalex.org/W1977208942","https://openalex.org/W2796240531","https://openalex.org/W2954325093","https://openalex.org/W6997290516","https://openalex.org/W6922547327","https://openalex.org/W6903816283","https://openalex.org/W2562788452","https://openalex.org/W2125747590"],"abstract_inverted_index":{"Synopsis":[0],"Correction":[1],"factors":[2],"developed":[3],"for":[4,59],"use":[5,36],"with":[6],"the":[7,28,32,38,49],"inclined":[8,50],"point":[9,51],"quadrat":[10,52],"method":[11,53],"were":[12],"tested.":[13],"The":[14,35],"correction":[15],"factor":[16,29],"based":[17,30],"on":[18,31],"yield":[19,45],"per":[20],"hit":[21],"gave":[22],"more":[23],"satisfactory":[24,57],"results":[25,58],"than":[26],"did":[27,54],"regression":[33,39],"coefficients.":[34],"of":[37,44,46],"equations":[40],"to":[41],"provide":[42],"estimates":[43],"forage":[47],"by":[48],"not":[55],"give":[56],"all":[60],"species.":[61]},"counts_by_year":[],"updated_date":"2026-09-23T05:00:35.095934","created_date":"2016-06-24T00:00:00"}
