Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1438218117', 'doi': None, 'title': 'Green manures and covering nitrogen fertilization in maize.', 'display_name': 'Green manures and covering nitrogen fertilization in maize.', 'publication_year': 2010, 'publication_date': '2010-01-01', 'ids': {'openalex': 'https://openalex.org/W1438218117', 'mag': '1438218117'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/20113221687', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306526209', 'display_name': 'Revista Brasileira de Milho e Sorgo', 'issn_l': '1676-689X', 'issn': ['1676-689X', '1980-6477'], 'is_oa': True, 'is_in_doaj': True, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'journal'}, '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/A5040044536', 'display_name': 'Pablo Aramis Santos', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'P. A. Santos', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5034856813', 'display_name': 'A. F. da Silva', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'A. F. da Silva', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5066718477', 'display_name': 'Marco Antônio Camillo de Carvalho', 'orcid': 'https://orcid.org/0000-0003-4966-1013'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'M. A. C. de Carvalho', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5039330680', 'display_name': 'Gustavo Caione', 'orcid': 'https://orcid.org/0000-0002-6728-8008'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'G. Caione', 'raw_affiliation_strings': [], 'affiliations': []}], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 400, 'currency': 'BRL', 'value_usd': 76, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.559, 'has_fulltext': False, 'cited_by_count': 2, 'citation_normalized_percentile': {'value': 0.670825, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 72, 'max': 75}, 'biblio': {'volume': '9', 'issue': '2', 'first_page': '123', 'last_page': '134'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12310', 'display_name': 'Factors Affecting Maize Yield and Lodging Resistance', 'score': 0.8973, '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': 0.8973, '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/nitrogen-uptake', 'display_name': 'Nitrogen Uptake', 'score': 0.547954}, {'id': 'https://openalex.org/keywords/maize-yield', 'display_name': 'Maize Yield', 'score': 0.524977}, {'id': 'https://openalex.org/keywords/grain-quality', 'display_name': 'Grain Quality', 'score': 0.503848}, {'id': 'https://openalex.org/keywords/plant-density', 'display_name': 'Plant Density', 'score': 0.503604}, {'id': 'https://openalex.org/keywords/nitrogen-fertilizer', 'display_name': 'Nitrogen fertilizer', 'score': 0.4468127}], 'concepts': [{'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.6469668}, {'id': 'https://openalex.org/C88972607', 'wikidata': 'https://www.wikidata.org/wiki/Q2666904', 'display_name': 'Human fertilization', 'level': 2, 'score': 0.6300365}, {'id': 'https://openalex.org/C537208039', 'wikidata': 'https://www.wikidata.org/wiki/Q627', 'display_name': 'Nitrogen', 'level': 2, 'score': 0.5238374}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.5084011}, {'id': 'https://openalex.org/C2993531722', 'wikidata': 'https://www.wikidata.org/wiki/Q11575', 'display_name': 'Zea mays', 'level': 2, 'score': 0.47133613}, {'id': 'https://openalex.org/C2993605384', 'wikidata': 'https://www.wikidata.org/wiki/Q83323', 'display_name': 'Nitrogen fertilizer', 'level': 3, 'score': 0.4468127}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.33033723}, {'id': 'https://openalex.org/C2780560099', 'wikidata': 'https://www.wikidata.org/wiki/Q83323', 'display_name': 'Fertilizer', 'level': 2, 'score': 0.1991753}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.11921874}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/cabdirect/abstract/20113221687', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306526209', 'display_name': 'Revista Brasileira de Milho e Sorgo', 'issn_l': '1676-689X', 'issn': ['1676-689X', '1980-6477'], 'is_oa': True, 'is_in_doaj': True, 'is_core': False, 'host_organization': None, 'host_organization_name': None, 'host_organization_lineage': [], 'host_organization_lineage_names': [], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'display_name': 'Zero hunger', 'score': 0.86, 'id': 'https://metadata.un.org/sdg/2'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W993618995', 'https://openalex.org/W922263133', 'https://openalex.org/W646740189', 'https://openalex.org/W562075380', 'https://openalex.org/W3204498839', 'https://openalex.org/W3107501270', 'https://openalex.org/W3096729569', 'https://openalex.org/W307066366', 'https://openalex.org/W2992227540', 'https://openalex.org/W2968998811', 'https://openalex.org/W2931452188', 'https://openalex.org/W2915715630', 'https://openalex.org/W2565201632', 'https://openalex.org/W2559154490', 'https://openalex.org/W2557429611', 'https://openalex.org/W2346281722', 'https://openalex.org/W2191627351', 'https://openalex.org/W1418704637', 'https://openalex.org/W1243039632', 'https://openalex.org/W104895746'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1438218117', 'counts_by_year': [{'year': 2016, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 1}], 'updated_date': '2024-08-14T09:14:49.429472', 'created_date': '2016-06-24'}