Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2587119322', 'doi': None, 'title': 'Development of field-specific spring N rate recommendations for winter wheat', 'display_name': 'Development of field-specific spring N rate recommendations for winter wheat', 'publication_year': 1993, 'publication_date': '1993-01-01', 'ids': {'openalex': 'https://openalex.org/W2587119322', 'mag': '2587119322'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://vtechworks.lib.vt.edu/handle/10919/40078', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'dissertation', 'type_crossref': 'dissertation', '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/A5001568848', 'display_name': 'Peter C. Scharf', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'Peter Clifton Scharf', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5001568848'], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': None, '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': 53}, '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': 'Crop Yield and Soil Fertility', 'score': 0.9815, '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': 'Crop Yield and Soil Fertility', 'score': 0.9815, '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': 0.5979312}], 'concepts': [{'id': 'https://openalex.org/C2778712887', 'wikidata': 'https://www.wikidata.org/wiki/Q102836', 'display_name': 'Spring (device)', 'level': 2, 'score': 0.74601936}, {'id': 'https://openalex.org/C3018661444', 'wikidata': 'https://www.wikidata.org/wiki/Q6977574', 'display_name': 'Winter wheat', 'level': 2, 'score': 0.5979312}, {'id': 'https://openalex.org/C9652623', 'wikidata': 'https://www.wikidata.org/wiki/Q190109', 'display_name': 'Field (mathematics)', 'level': 2, 'score': 0.514092}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.49783397}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.46741414}, {'id': 'https://openalex.org/C88463610', 'wikidata': 'https://www.wikidata.org/wiki/Q194118', 'display_name': 'Agricultural engineering', 'level': 1, 'score': 0.3283128}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.21777534}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.21525523}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.21188754}, {'id': 'https://openalex.org/C78519656', 'wikidata': 'https://www.wikidata.org/wiki/Q101333', 'display_name': 'Mechanical engineering', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C202444582', 'wikidata': 'https://www.wikidata.org/wiki/Q837863', 'display_name': 'Pure mathematics', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://vtechworks.lib.vt.edu/handle/10919/40078', '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': 0.79, '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/W611127870', 'https://openalex.org/W2801041335', 'https://openalex.org/W2737910279', 'https://openalex.org/W2619489869', 'https://openalex.org/W2612888498', 'https://openalex.org/W2603003024', 'https://openalex.org/W2602191050', 'https://openalex.org/W2601107075', 'https://openalex.org/W2600383914', 'https://openalex.org/W2599775813', 'https://openalex.org/W2597842286', 'https://openalex.org/W2597012915', 'https://openalex.org/W2596840681', 'https://openalex.org/W2596410890', 'https://openalex.org/W2596249611', 'https://openalex.org/W2595643143', 'https://openalex.org/W2595293779', 'https://openalex.org/W2594500234', 'https://openalex.org/W2265191242', 'https://openalex.org/W1498506511'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2587119322', 'counts_by_year': [], 'updated_date': '2024-12-12T16:35:58.049888', 'created_date': '2017-02-17'}