Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2589055935', 'doi': None, 'title': 'Effects of nitrogen fertilization on yield of wheat-ryegrass mixtures grown for forage.', 'display_name': 'Effects of nitrogen fertilization on yield of wheat-ryegrass mixtures grown for forage.', 'publication_year': 1980, 'publication_date': '1980-01-01', 'ids': {'openalex': 'https://openalex.org/W2589055935', 'mag': '2589055935'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/19841985084', '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/A5041460902', 'display_name': 'Nelson T. Edwards', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'N. C. Edwards', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5041460902'], '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': 56}, 'biblio': {'volume': '5', 'issue': '9', 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T13246', 'display_name': 'Effective Microorganisms in Agriculture', 'score': 0.9983, '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/T13246', 'display_name': 'Effective Microorganisms in Agriculture', 'score': 0.9983, '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/T11805', 'display_name': 'Economic and Social Aspects of Agriculture', 'score': 0.9914, 'subfield': {'id': 'https://openalex.org/subfields/3311', 'display_name': 'Safety Research'}, 'field': {'id': 'https://openalex.org/fields/33', 'display_name': 'Social Sciences'}, 'domain': {'id': 'https://openalex.org/domains/2', 'display_name': 'Social Sciences'}}, {'id': 'https://openalex.org/T12618', 'display_name': 'Diversity and Conservation of Vascular Plants in Central Europe', 'score': 0.981, '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/nitrogen-fertilizer', 'display_name': 'Nitrogen fertilizer', 'score': 0.61441636}, {'id': 'https://openalex.org/keywords/seed-yield', 'display_name': 'Seed Yield', 'score': 0.52051}, {'id': 'https://openalex.org/keywords/plant-growth', 'display_name': 'Plant Growth', 'score': 0.5162}, {'id': 'https://openalex.org/keywords/vegetation', 'display_name': 'Vegetation', 'score': 0.500065}], 'concepts': [{'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.8068366}, {'id': 'https://openalex.org/C88972607', 'wikidata': 'https://www.wikidata.org/wiki/Q2666904', 'display_name': 'Human fertilization', 'level': 2, 'score': 0.7056719}, {'id': 'https://openalex.org/C2779370140', 'wikidata': 'https://www.wikidata.org/wiki/Q13377214', 'display_name': 'Forage', 'level': 2, 'score': 0.68461806}, {'id': 'https://openalex.org/C134121241', 'wikidata': 'https://www.wikidata.org/wiki/Q899301', 'display_name': 'Yield (engineering)', 'level': 2, 'score': 0.6788538}, {'id': 'https://openalex.org/C2993605384', 'wikidata': 'https://www.wikidata.org/wiki/Q83323', 'display_name': 'Nitrogen fertilizer', 'level': 3, 'score': 0.61441636}, {'id': 'https://openalex.org/C537208039', 'wikidata': 'https://www.wikidata.org/wiki/Q627', 'display_name': 'Nitrogen', 'level': 2, 'score': 0.5911181}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.41408974}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.27911374}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.27861145}, {'id': 'https://openalex.org/C2780560099', 'wikidata': 'https://www.wikidata.org/wiki/Q83323', 'display_name': 'Fertilizer', 'level': 2, 'score': 0.15841499}, {'id': 'https://openalex.org/C192562407', 'wikidata': 'https://www.wikidata.org/wiki/Q228736', 'display_name': 'Materials science', 'level': 0, 'score': 0.10894716}, {'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': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/19841985084', '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': [{'id': 'https://metadata.un.org/sdg/2', 'display_name': 'Zero hunger', 'score': 0.83}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W344974548', 'https://openalex.org/W314331858', 'https://openalex.org/W3113883977', 'https://openalex.org/W3081646181', 'https://openalex.org/W2625595007', 'https://openalex.org/W2586238293', 'https://openalex.org/W2578322788', 'https://openalex.org/W249613020', 'https://openalex.org/W246758077', 'https://openalex.org/W239877101', 'https://openalex.org/W222218345', 'https://openalex.org/W2166901109', 'https://openalex.org/W1945280076', 'https://openalex.org/W189457169', 'https://openalex.org/W173283108', 'https://openalex.org/W163515788', 'https://openalex.org/W1421381865', 'https://openalex.org/W1197192028', 'https://openalex.org/W1013379329', 'https://openalex.org/W1002534010'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2589055935', 'counts_by_year': [], 'updated_date': '2024-09-15T13:53:43.867245', 'created_date': '2017-02-24'}