Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W191960150', 'doi': None, 'title': 'Crop production. Volume 2: production technology.', 'display_name': 'Crop production. Volume 2: production technology.', 'publication_year': 1986, 'publication_date': '1986-01-01', 'ids': {'openalex': 'https://openalex.org/W191960150', 'mag': '191960150'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/19870797613.html', '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/A5047137218', 'display_name': 'J. Oehmichen', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'J. Oehmichen', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5047137218'], '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': 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': 'Factors Affecting Maize Yield and Lodging Resistance', 'score': 0.1544, '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': 0.1544, '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/crop-management', 'display_name': 'Crop Management', 'score': 0.663957}, {'id': 'https://openalex.org/keywords/crop-production', 'display_name': 'Crop production', 'score': 0.5678781}, {'id': 'https://openalex.org/keywords/grain-quality', 'display_name': 'Grain Quality', 'score': 0.551652}], 'concepts': [{'id': 'https://openalex.org/C2778348673', 'wikidata': 'https://www.wikidata.org/wiki/Q739302', 'display_name': 'Production (economics)', 'level': 2, 'score': 0.69922554}, {'id': 'https://openalex.org/C2989409935', 'wikidata': 'https://www.wikidata.org/wiki/Q11451', 'display_name': 'Crop production', 'level': 3, 'score': 0.5678781}, {'id': 'https://openalex.org/C137580998', 'wikidata': 'https://www.wikidata.org/wiki/Q235352', 'display_name': 'Crop', 'level': 2, 'score': 0.5227882}, {'id': 'https://openalex.org/C20556612', 'wikidata': 'https://www.wikidata.org/wiki/Q4469374', 'display_name': 'Volume (thermodynamics)', 'level': 2, 'score': 0.45990583}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.4000998}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.36042506}, {'id': 'https://openalex.org/C88463610', 'wikidata': 'https://www.wikidata.org/wiki/Q194118', 'display_name': 'Agricultural engineering', 'level': 1, 'score': 0.35564947}, {'id': 'https://openalex.org/C118518473', 'wikidata': 'https://www.wikidata.org/wiki/Q11451', 'display_name': 'Agriculture', 'level': 2, 'score': 0.2563635}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.16474271}, {'id': 'https://openalex.org/C127413603', 'wikidata': 'https://www.wikidata.org/wiki/Q11023', 'display_name': 'Engineering', 'level': 0, 'score': 0.1596637}, {'id': 'https://openalex.org/C162324750', 'wikidata': 'https://www.wikidata.org/wiki/Q8134', 'display_name': 'Economics', 'level': 0, 'score': 0.14680356}, {'id': 'https://openalex.org/C18903297', 'wikidata': 'https://www.wikidata.org/wiki/Q7150', 'display_name': 'Ecology', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C139719470', 'wikidata': 'https://www.wikidata.org/wiki/Q39680', 'display_name': 'Macroeconomics', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/19870797613.html', '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': [{'display_name': 'Zero hunger', 'id': 'https://metadata.un.org/sdg/2', 'score': 0.65}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W965378207', 'https://openalex.org/W341804402', 'https://openalex.org/W3204096030', 'https://openalex.org/W318539538', 'https://openalex.org/W3096912443', 'https://openalex.org/W2740678113', 'https://openalex.org/W272265421', 'https://openalex.org/W264874065', 'https://openalex.org/W2612094880', 'https://openalex.org/W2594424021', 'https://openalex.org/W2560542839', 'https://openalex.org/W2289126740', 'https://openalex.org/W227745019', 'https://openalex.org/W1803078', 'https://openalex.org/W1674433704', 'https://openalex.org/W1516301950', 'https://openalex.org/W1491351988', 'https://openalex.org/W1455579694', 'https://openalex.org/W1122871404', 'https://openalex.org/W110756990'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W191960150', 'counts_by_year': [], 'updated_date': '2024-09-19T11:33:16.245808', 'created_date': '2016-06-24'}