{"id":"https://openalex.org/W572004608","doi":null,"title":"Maintaining the productivity of irrigated land","display_name":"Maintaining the productivity of irrigated land","publication_year":1924,"publication_date":"1924-01-01","ids":{"openalex":"https://openalex.org/W572004608","mag":"572004608"},"language":"en","primary_location":{"id":"mag:572004608","doi":null,"is_oa":false,"landing_page_url":"http://ci.nii.ac.jp/ncid/BB03548980","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"book","indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5045337561","display_name":"David W. Pittman","orcid":"https://orcid.org/0000-0002-3713-2803","observed_orcids":["https://orcid.org/0000-0002-3713-2803"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"David W. Pittman","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-3713-2803","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5045337561"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.01174497,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11404","display_name":"Irrigation Practices and Water Management","score":0.9541000127792358,"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"}},"topics":[{"id":"https://openalex.org/T11404","display_name":"Irrigation Practices and Water Management","score":0.9541000127792358,"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/T12710","display_name":"Engineering and Agricultural Innovations","score":0.024900000542402267,"subfield":{"id":"https://openalex.org/subfields/1104","display_name":"Aquatic 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/T13082","display_name":"Water and Land Management","score":0.007199999876320362,"subfield":{"id":"https://openalex.org/subfields/2308","display_name":"Management, Monitoring, Policy and Law"},"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/irrigated-land","display_name":"irrigated land","score":0.9340000152587891},{"id":"https://openalex.org/keywords/land-productivity","display_name":"land productivity","score":0.7110000252723694},{"id":"https://openalex.org/keywords/irrigation-management","display_name":"irrigation management","score":0.6299999952316284},{"id":"https://openalex.org/keywords/soil-fertility","display_name":"soil fertility","score":0.6039999723434448},{"id":"https://openalex.org/keywords/crop-yield","display_name":"crop yield","score":0.4519999921321869}],"concepts":[{"id":"https://openalex.org/C204983608","wikidata":"https://www.wikidata.org/wiki/Q2111958","display_name":"Productivity","level":2,"score":0.7018376588821411},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.46655434370040894},{"id":"https://openalex.org/C54286561","wikidata":"https://www.wikidata.org/wiki/Q397350","display_name":"Agroforestry","level":1,"score":0.4369688034057617},{"id":"https://openalex.org/C88862950","wikidata":"https://www.wikidata.org/wiki/Q11453","display_name":"Irrigation","level":2,"score":0.42651450634002686},{"id":"https://openalex.org/C88463610","wikidata":"https://www.wikidata.org/wiki/Q194118","display_name":"Agricultural engineering","level":1,"score":0.38476404547691345},{"id":"https://openalex.org/C524765639","wikidata":"https://www.wikidata.org/wiki/Q1501619","display_name":"Water resource management","level":1,"score":0.35643506050109863},{"id":"https://openalex.org/C48824518","wikidata":"https://www.wikidata.org/wiki/Q396340","display_name":"Agricultural economics","level":1,"score":0.3448783755302429},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.223409503698349},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.16978663206100464},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.12007346749305725},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.07549545168876648},{"id":"https://openalex.org/C139719470","wikidata":"https://www.wikidata.org/wiki/Q39680","display_name":"Macroeconomics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:572004608","doi":null,"is_oa":false,"landing_page_url":"http://ci.nii.ac.jp/ncid/BB03548980","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.991100013256073,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"},{"score":0.6618000268936157,"display_name":"Clean water and sanitation","id":"https://metadata.un.org/sdg/6"},{"score":0.4390000104904175,"display_name":"Life on land","id":"https://metadata.un.org/sdg/15"}],"sustainable_development_goals_aurora":[{"score":0.6800000071525574,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2907235292","https://openalex.org/W3123816432","https://openalex.org/W2570152229","https://openalex.org/W316771907","https://openalex.org/W7167010907","https://openalex.org/W2593426416","https://openalex.org/W7167027084","https://openalex.org/W7101399025","https://openalex.org/W7140033911","https://openalex.org/W594688770"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-10-26T11:51:55.731654","created_date":"2016-06-24T00:00:00"}