Investigation of Tape Line Drip Irrigation Systems in the Eastern Faryab Plain: Technical Assessment and Solutions

Investigation of Tape Line Drip Irrigation Systems in the Eastern Faryab Plain: Technical Assessment and Solutions | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Investigation of Tape Line Drip Irrigation Systems in the Eastern Faryab Plain: Technical Assessment and Solutions Mohammad Naderianfar, Shapour Kouhestani This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7282999/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Today, by field evaluating modern irrigation systems and monitoring their status, we can identify their strengths and weaknesses, thereby facilitating better utilization through amendments and the adoption of new management practices. In this study, 30 experimental farms managed by farmers in 2024, equipped with tape drip irrigation systems, were selected in the Faryab region, where potatoes and onions were cultivated. To evaluate the irrigation systems, a main pipe was randomly selected, and four lateral pipes located at the beginning, one-third, two-thirds, and the end of the main pipe were considered. The flow rate from the emitters and the pressure at the beginning and end of the tested pipes were measured. The system's performance was evaluated based on the Christiansen’s Uniformity Coefficient (CU), Distribution Uniformity (DU), Coefficient of Variation (Cv), Emitter Uniformity (EU), flow variation (qvar), application efficiency (Ea), Actual Lower Quartile Distribution Efficiency (AELQ) (AELQ), and Potential Lower Quartile Application Efficiency (PELQ). The results showed that the average CU, DU, Cv, and EU in the evaluated designs were 77.6%, 69.8%, 0.29, and 59.5%, respectively. Furthermore, the average flow variation (qvar), application efficiency (Ea), actual lower quartile application efficiency (AELQ), and potential lower quartile application efficiency (PELQ) were 58.2%, 61.5%, 59.8%, and 53.8%, respectively. The results indicated that the average volume of water consumed, yield, and water productivity index (WPI) for onions were 8340 m³ ha⁻¹, 41 t ha⁻¹, and 5.86 kg m⁻³, respectively, while these values for potatoes were 7710 m³ ha⁻¹, 39.5 t ha⁻¹, and 5.98 kg m⁻³. Physical sciences/Engineering Earth and environmental sciences/Environmental sciences Biological sciences/Plant sciences Distribution Uniformity Field Evaluation Yield Water Productivity Index Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7282999","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":499514605,"identity":"9d3959d5-db23-4c68-b102-c56a647d27e8","order_by":0,"name":"Mohammad Naderianfar","email":"data:image/png;base64,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","orcid":"","institution":"University of Jiroft","correspondingAuthor":true,"prefix":"","firstName":"Mohammad","middleName":"","lastName":"Naderianfar","suffix":""},{"id":499514609,"identity":"d8834b7f-74c0-44ab-8415-69d47ccf71be","order_by":1,"name":"Shapour Kouhestani","email":"","orcid":"","institution":"University of Jiroft","correspondingAuthor":false,"prefix":"","firstName":"Shapour","middleName":"","lastName":"Kouhestani","suffix":""}],"badges":[],"createdAt":"2025-08-03 11:23:16","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7282999/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7282999/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":91019618,"identity":"5459dbc7-891b-47fa-a8b5-2a8b950f9926","added_by":"auto","created_at":"2025-09-10 18:01:39","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":859243,"visible":true,"origin":"","legend":"","description":"","filename":"naderianfar14040420.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7282999/v1_covered_ec5c8c47-6b2b-45f8-b41c-39a9e8643196.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Investigation of Tape Line Drip Irrigation Systems in the Eastern Faryab Plain: Technical Assessment and Solutions","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Distribution Uniformity, Field Evaluation, Yield, Water Productivity Index","lastPublishedDoi":"10.21203/rs.3.rs-7282999/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7282999/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eToday, by field evaluating modern irrigation systems and monitoring their status, we can identify their strengths and weaknesses, thereby facilitating better utilization through amendments and the adoption of new management practices. In this study, 30 experimental farms managed by farmers in 2024, equipped with tape drip irrigation systems, were selected in the Faryab region, where potatoes and onions were cultivated. To evaluate the irrigation systems, a main pipe was randomly selected, and four lateral pipes located at the beginning, one-third, two-thirds, and the end of the main pipe were considered. The flow rate from the emitters and the pressure at the beginning and end of the tested pipes were measured. The system's performance was evaluated based on the Christiansen\u0026rsquo;s Uniformity Coefficient (CU), Distribution Uniformity (DU), Coefficient of Variation (Cv), Emitter Uniformity (EU), flow variation (qvar), application efficiency (Ea), Actual Lower Quartile Distribution Efficiency (AELQ) (AELQ), and Potential Lower Quartile Application Efficiency (PELQ). The results showed that the average CU, DU, Cv, and EU in the evaluated designs were 77.6%, 69.8%, 0.29, and 59.5%, respectively. Furthermore, the average flow variation (qvar), application efficiency (Ea), actual lower quartile application efficiency (AELQ), and potential lower quartile application efficiency (PELQ) were 58.2%, 61.5%, 59.8%, and 53.8%, respectively. The results indicated that the average volume of water consumed, yield, and water productivity index (WPI) for onions were 8340 m\u0026sup3; ha⁻\u0026sup1;, 41 t ha⁻\u0026sup1;, and 5.86 kg m⁻\u0026sup3;, respectively, while these values for potatoes were 7710 m\u0026sup3; ha⁻\u0026sup1;, 39.5 t ha⁻\u0026sup1;, and 5.98 kg m⁻\u0026sup3;.\u003c/p\u003e","manuscriptTitle":"Investigation of Tape Line Drip Irrigation Systems in the Eastern Faryab Plain: Technical Assessment and Solutions","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-08-13 05:32:13","doi":"10.21203/rs.3.rs-7282999/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"0d987baa-2ed7-4206-927b-b82c54d50187","owner":[],"postedDate":"August 13th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":53060664,"name":"Physical sciences/Engineering"},{"id":53060665,"name":"Earth and environmental sciences/Environmental sciences"},{"id":53060666,"name":"Biological sciences/Plant sciences"}],"tags":[],"updatedAt":"2025-09-10T17:53:31+00:00","versionOfRecord":[],"versionCreatedAt":"2025-08-13 05:32:13","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7282999","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7282999","identity":"rs-7282999","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}