Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1569747284', 'doi': None, 'title': 'Managing Nitrogen Fertilizers for Maximum Efficiency in Reduced Tillage Systems', 'display_name': 'Managing Nitrogen Fertilizers for Maximum Efficiency in Reduced Tillage Systems', 'publication_year': 1985, 'publication_date': '1985-01-01', 'ids': {'openalex': 'https://openalex.org/W1569747284', 'mag': '1569747284'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://docs.lib.purdue.edu/agext/334/', '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/A5045298077', 'display_name': 'David Mengel', 'orcid': 'https://orcid.org/0000-0002-4133-7182'}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'David B. Mengel', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5045298077'], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.356032, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 54, 'max': 62}, 'biblio': {'volume': None, 'issue': None, 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12310', 'display_name': 'Factors Affecting Maize Yield and Lodging Resistance', 'score': 0.9751, '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': 0.9751, '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'}}, {'id': 'https://openalex.org/T10004', 'display_name': 'Soil Carbon Dynamics and Nutrient Cycling in Ecosystems', 'score': 0.96, 'subfield': {'id': 'https://openalex.org/subfields/1111', 'display_name': 'Soil 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/T11311', 'display_name': 'Biogeochemical Cycling of Nutrients in Aquatic Ecosystems', 'score': 0.9322, 'subfield': {'id': 'https://openalex.org/subfields/2304', 'display_name': 'Environmental Chemistry'}, 'field': {'id': 'https://openalex.org/fields/23', 'display_name': 'Environmental Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/nitrogen-dynamics', 'display_name': 'Nitrogen Dynamics', 'score': 0.54725}, {'id': 'https://openalex.org/keywords/nitrogen-uptake', 'display_name': 'Nitrogen Uptake', 'score': 0.546401}, {'id': 'https://openalex.org/keywords/nutrient-limitation', 'display_name': 'Nutrient Limitation', 'score': 0.54613}, {'id': 'https://openalex.org/keywords/crop-management', 'display_name': 'Crop Management', 'score': 0.533161}, {'id': 'https://openalex.org/keywords/ecosystem-functioning', 'display_name': 'Ecosystem Functioning', 'score': 0.525941}], 'concepts': [{'id': 'https://openalex.org/C16397148', 'wikidata': 'https://www.wikidata.org/wiki/Q878333', 'display_name': 'Tillage', 'level': 2, 'score': 0.73015237}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.56368244}, {'id': 'https://openalex.org/C537208039', 'wikidata': 'https://www.wikidata.org/wiki/Q627', 'display_name': 'Nitrogen', 'level': 2, 'score': 0.52977943}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.47095805}, {'id': 'https://openalex.org/C88463610', 'wikidata': 'https://www.wikidata.org/wiki/Q194118', 'display_name': 'Agricultural engineering', 'level': 1, 'score': 0.4357142}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.16763836}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.15446478}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.07420266}, {'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://docs.lib.purdue.edu/agext/334/', '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': 0.51}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W971907983', 'https://openalex.org/W751468386', 'https://openalex.org/W50217722', 'https://openalex.org/W3105447671', 'https://openalex.org/W3014445622', 'https://openalex.org/W2837721153', 'https://openalex.org/W2562797632', 'https://openalex.org/W245659715', 'https://openalex.org/W2442032342', 'https://openalex.org/W2349313567', 'https://openalex.org/W2306864815', 'https://openalex.org/W2219830498', 'https://openalex.org/W2177206864', 'https://openalex.org/W2028165757', 'https://openalex.org/W2008023201', 'https://openalex.org/W19319646', 'https://openalex.org/W1422970728', 'https://openalex.org/W1226182994', 'https://openalex.org/W1181930231', 'https://openalex.org/W1011929863'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1569747284', 'counts_by_year': [], 'updated_date': '2024-09-14T20:59:42.878273', 'created_date': '2016-06-24'}