Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W312946654', 'doi': None, 'title': '03 Critical levels of phosphorus for upland rice in a cerrado Oxisol.', 'display_name': '03 Critical levels of phosphorus for upland rice in a cerrado Oxisol.', 'publication_year': 1980, 'publication_date': '1980-01-01', 'ids': {'openalex': 'https://openalex.org/W312946654', 'mag': '312946654'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/19806734813.html', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S80741212', 'display_name': 'Revista Brasileira de Ciência do Solo', 'issn_l': '0100-0683', 'issn': ['0100-0683', '1806-9657'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311987', 'host_organization_name': 'Sociedade Brasileira de Ciência do Solo', 'host_organization_lineage': ['https://openalex.org/P4310311987'], 'host_organization_lineage_names': ['Sociedade Brasileira de Ciência do Solo'], '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/A5008124093', 'display_name': 'Thomas J. Smyth', 'orcid': 'https://orcid.org/0000-0003-2913-3782'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'T. J. Smyth', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5004088709', 'display_name': 'Pedro Antonio Sánchez Miguel', 'orcid': 'https://orcid.org/0000-0002-1660-535X'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'P. A. Sanchez', 'raw_affiliation_strings': [], 'affiliations': []}], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 100, 'currency': 'USD', 'value_usd': 100, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 3, 'citation_normalized_percentile': {'value': 0.0, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 68, 'max': 71}, 'biblio': {'volume': '4', 'issue': '2', 'first_page': '88', 'last_page': '92'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12045', 'display_name': 'Rice Water Management and Productivity Enhancement', 'score': 0.923, '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/T12045', 'display_name': 'Rice Water Management and Productivity Enhancement', 'score': 0.923, '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/oxisol', 'display_name': 'Oxisol', 'score': 0.9862413}, {'id': 'https://openalex.org/keywords/system-of-rice-intensification-(sri)', 'display_name': 'System of Rice Intensification (SRI)', 'score': 0.534538}, {'id': 'https://openalex.org/keywords/aerobic-rice-systems', 'display_name': 'Aerobic Rice Systems', 'score': 0.502446}], 'concepts': [{'id': 'https://openalex.org/C179538286', 'wikidata': 'https://www.wikidata.org/wiki/Q1082328', 'display_name': 'Oxisol', 'level': 3, 'score': 0.9862413}, {'id': 'https://openalex.org/C510538283', 'wikidata': 'https://www.wikidata.org/wiki/Q674', 'display_name': 'Phosphorus', 'level': 2, 'score': 0.72595644}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.52449435}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.5154189}, {'id': 'https://openalex.org/C54286561', 'wikidata': 'https://www.wikidata.org/wiki/Q397350', 'display_name': 'Agroforestry', 'level': 1, 'score': 0.47275385}, {'id': 'https://openalex.org/C159750122', 'wikidata': 'https://www.wikidata.org/wiki/Q96621023', 'display_name': 'Soil water', 'level': 2, 'score': 0.15148777}, {'id': 'https://openalex.org/C159390177', 'wikidata': 'https://www.wikidata.org/wiki/Q9161265', 'display_name': 'Soil science', 'level': 1, 'score': 0.12895581}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.124253035}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.08087963}, {'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/abstracts/19806734813.html', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S80741212', 'display_name': 'Revista Brasileira de Ciência do Solo', 'issn_l': '0100-0683', 'issn': ['0100-0683', '1806-9657'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310311987', 'host_organization_name': 'Sociedade Brasileira de Ciência do Solo', 'host_organization_lineage': ['https://openalex.org/P4310311987'], 'host_organization_lineage_names': ['Sociedade Brasileira de Ciência do Solo'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'score': 0.68, 'id': 'https://metadata.un.org/sdg/2', 'display_name': 'Zero hunger'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W980590161', 'https://openalex.org/W835408931', 'https://openalex.org/W792290311', 'https://openalex.org/W655362671', 'https://openalex.org/W3095707598', 'https://openalex.org/W3094256664', 'https://openalex.org/W277044607', 'https://openalex.org/W2580839452', 'https://openalex.org/W244929329', 'https://openalex.org/W2411500547', 'https://openalex.org/W2242141705', 'https://openalex.org/W2236333608', 'https://openalex.org/W2213532080', 'https://openalex.org/W2188328497', 'https://openalex.org/W2177288302', 'https://openalex.org/W210992368', 'https://openalex.org/W1977233460', 'https://openalex.org/W1966740289', 'https://openalex.org/W1577043923', 'https://openalex.org/W1142096289'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W312946654', 'counts_by_year': [{'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-08-31T08:59:22.636595', 'created_date': '2016-06-24'}