Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2173405495', 'doi': None, 'title': 'Effects of nitrogen and population density on wild barley (Hordeum spontaneum Koch) competition with winter wheat (Triticum aestivum L.).', 'display_name': 'Effects of nitrogen and population density on wild barley (Hordeum spontaneum Koch) competition with winter wheat (Triticum aestivum L.).', 'publication_year': 2010, 'publication_date': '2010-01-01', 'ids': {'openalex': 'https://openalex.org/W2173405495', 'mag': '2173405495'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/20103165538.html', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': [], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5047357100', 'display_name': 'H R Rahimian Mashhadi', 'orcid': 'https://orcid.org/0000-0002-0648-7062'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'R. Hamidi', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5008427487', 'display_name': 'D Mazaheri', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'D. Mazaheri', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5047357100', 'display_name': 'H R Rahimian Mashhadi', 'orcid': 'https://orcid.org/0000-0002-0648-7062'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'H. Rahimian', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5020937290', 'display_name': 'Hassan Alizadeh', 'orcid': 'https://orcid.org/0000-0002-5685-6567'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'H. M. Alizadeh', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5002474493', 'display_name': 'Hossein Zeinali', 'orcid': 'https://orcid.org/0000-0002-8921-1052'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'H. Zeinali', 'raw_affiliation_strings': [], 'affiliations': []}], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 0, 'citation_normalized_percentile': {'value': 0.0, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 0, 'max': 64}, 'biblio': {'volume': None, 'issue': None, 'first_page': '335', 'last_page': '338'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12310', 'display_name': 'Factors Affecting Maize Yield and Lodging Resistance', 'score': 0.9128, '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': 'Factors Affecting Maize Yield and Lodging Resistance', 'score': 0.9128, '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/winter-wheat', 'display_name': 'Winter wheat', 'score': 0.61840713}, {'id': 'https://openalex.org/keywords/hordeum', 'display_name': 'Hordeum', 'score': 0.56026816}, {'id': 'https://openalex.org/keywords/plant-density', 'display_name': 'Plant Density', 'score': 0.485253}], 'concepts': [{'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.6482296}, {'id': 'https://openalex.org/C3018661444', 'wikidata': 'https://www.wikidata.org/wiki/Q6977574', 'display_name': 'Winter wheat', 'level': 2, 'score': 0.61840713}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.61177707}, {'id': 'https://openalex.org/C91306197', 'wikidata': 'https://www.wikidata.org/wiki/Q45767', 'display_name': 'Competition (biology)', 'level': 2, 'score': 0.60626465}, {'id': 'https://openalex.org/C2777534271', 'wikidata': 'https://www.wikidata.org/wiki/Q518044', 'display_name': 'Hordeum', 'level': 4, 'score': 0.56026816}, {'id': 'https://openalex.org/C2908647359', 'wikidata': 'https://www.wikidata.org/wiki/Q2625603', 'display_name': 'Population', 'level': 2, 'score': 0.4897273}, {'id': 'https://openalex.org/C2993665447', 'wikidata': 'https://www.wikidata.org/wiki/Q11577', 'display_name': 'Hordeum vulgare', 'level': 3, 'score': 0.485942}, {'id': 'https://openalex.org/C197321923', 'wikidata': 'https://www.wikidata.org/wiki/Q4886', 'display_name': 'Cultivar', 'level': 2, 'score': 0.4788487}, {'id': 'https://openalex.org/C537208039', 'wikidata': 'https://www.wikidata.org/wiki/Q627', 'display_name': 'Nitrogen', 'level': 2, 'score': 0.41764814}, {'id': 'https://openalex.org/C46757340', 'wikidata': 'https://www.wikidata.org/wiki/Q43238', 'display_name': 'Poaceae', 'level': 2, 'score': 0.33853465}, {'id': 'https://openalex.org/C59822182', 'wikidata': 'https://www.wikidata.org/wiki/Q441', 'display_name': 'Botany', 'level': 1, 'score': 0.32481343}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.1788714}, {'id': 'https://openalex.org/C18903297', 'wikidata': 'https://www.wikidata.org/wiki/Q7150', 'display_name': 'Ecology', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C149923435', 'wikidata': 'https://www.wikidata.org/wiki/Q37732', 'display_name': 'Demography', 'level': 1, 'score': 0.0}, {'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/C144024400', 'wikidata': 'https://www.wikidata.org/wiki/Q21201', 'display_name': 'Sociology', 'level': 0, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/20103165538.html', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'score': 0.71, 'display_name': 'Zero hunger', 'id': 'https://metadata.un.org/sdg/2'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W888460770', 'https://openalex.org/W757304938', 'https://openalex.org/W344814708', 'https://openalex.org/W3097267948', 'https://openalex.org/W2993967912', 'https://openalex.org/W2964725667', 'https://openalex.org/W2766437430', 'https://openalex.org/W2460656707', 'https://openalex.org/W2418829270', 'https://openalex.org/W2266374151', 'https://openalex.org/W2201716096', 'https://openalex.org/W2178059079', 'https://openalex.org/W2018250838', 'https://openalex.org/W1954385528', 'https://openalex.org/W1940388230', 'https://openalex.org/W18142355', 'https://openalex.org/W153047445', 'https://openalex.org/W1507653783', 'https://openalex.org/W1417441991', 'https://openalex.org/W1259457045'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2173405495', 'counts_by_year': [], 'updated_date': '2024-08-29T07:00:36.823748', 'created_date': '2016-06-24'}