Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W650117765', 'doi': None, 'title': 'Determination of critical period of competition between weeds and corn.', 'display_name': 'Determination of critical period of competition between weeds and corn.', 'publication_year': 2004, 'publication_date': '2004-01-01', 'ids': {'openalex': 'https://openalex.org/W650117765', 'mag': '650117765'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/20053161723.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/A5085131690', 'display_name': 'R. Villasana', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'R. Villasana', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5071079540', 'display_name': 'Ana Belén Rodríguez', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'A. B. Rodríguez', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5091617739', 'display_name': 'Darmys Pérez', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'D. Pérez', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5046077144', 'display_name': 'Jose V. Fernandez', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'J. Fernández', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', '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. Sánchez', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5016388994', 'display_name': 'H. Uranga', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'H. Uranga', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 1, 'citation_normalized_percentile': {'value': 0.498974, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 61, 'max': 68}, 'biblio': {'volume': None, 'issue': None, 'first_page': '142', 'last_page': '144'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10774', 'display_name': 'Weed Management and Herbicide Resistance', 'score': 0.9778, '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/T10774', 'display_name': 'Weed Management and Herbicide Resistance', 'score': 0.9778, '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'}}, {'id': 'https://openalex.org/T13246', 'display_name': 'Effective Microorganisms in Agriculture', 'score': 0.9624, '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'}}, {'id': 'https://openalex.org/T14018', 'display_name': 'Agricultural Science and Technology', 'score': 0.9615, 'subfield': {'id': 'https://openalex.org/subfields/1100', 'display_name': 'General Agricultural and Biological Sciences'}, '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/weed-control', 'display_name': 'Weed Control', 'score': 0.538749}, {'id': 'https://openalex.org/keywords/crop-productivity', 'display_name': 'Crop Productivity', 'score': 0.538203}, {'id': 'https://openalex.org/keywords/non-chemical-weed-management', 'display_name': 'Non-Chemical Weed Management', 'score': 0.521631}, {'id': 'https://openalex.org/keywords/plant-growth', 'display_name': 'Plant Growth', 'score': 0.51153}, {'id': 'https://openalex.org/keywords/crop-rotation', 'display_name': 'Crop Rotation', 'score': 0.510722}], 'concepts': [{'id': 'https://openalex.org/C2781291010', 'wikidata': 'https://www.wikidata.org/wiki/Q178580', 'display_name': 'Period (music)', 'level': 2, 'score': 0.6711743}, {'id': 'https://openalex.org/C6557445', 'wikidata': 'https://www.wikidata.org/wiki/Q173113', 'display_name': 'Agronomy', 'level': 1, 'score': 0.52413875}, {'id': 'https://openalex.org/C91306197', 'wikidata': 'https://www.wikidata.org/wiki/Q45767', 'display_name': 'Competition (biology)', 'level': 2, 'score': 0.5063118}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.24250403}, {'id': 'https://openalex.org/C18903297', 'wikidata': 'https://www.wikidata.org/wiki/Q7150', 'display_name': 'Ecology', 'level': 1, 'score': 0.10493514}, {'id': 'https://openalex.org/C24890656', 'wikidata': 'https://www.wikidata.org/wiki/Q82811', 'display_name': 'Acoustics', '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}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://www.cabdirect.org/abstracts/20053161723.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': [{'score': 0.74, '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/W826458694', 'https://openalex.org/W572682455', 'https://openalex.org/W325034406', 'https://openalex.org/W321819162', 'https://openalex.org/W3199962006', 'https://openalex.org/W3198048645', 'https://openalex.org/W3048704899', 'https://openalex.org/W2968190685', 'https://openalex.org/W286984757', 'https://openalex.org/W2777998170', 'https://openalex.org/W2767285103', 'https://openalex.org/W2152265458', 'https://openalex.org/W1964941915', 'https://openalex.org/W1788744170', 'https://openalex.org/W1776553090', 'https://openalex.org/W1649482632', 'https://openalex.org/W1549806569', 'https://openalex.org/W1522111091', 'https://openalex.org/W1508394871', 'https://openalex.org/W1424394804'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W650117765', 'counts_by_year': [], 'updated_date': '2024-09-13T22:57:16.442175', 'created_date': '2016-06-24'}