Slow but sure: the potential of slow-release nitrogen fertilizers to increase crop productivity and farm profit in Nepal

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren
cg.contributor.affiliationInternational Fertilizer Development Centeren
cg.contributor.affiliationNational Soil Science Research Center, Nepalen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.donorUnited States Agency for International Developmenten
cg.coverage.countryNepal
cg.coverage.iso3166-alpha2NP
cg.coverage.regionAsia
cg.coverage.regionSouthern Asia
cg.creator.identifierNaba Pandit: 0000-0002-2140-7024
cg.creator.identifierDyutiman Choudhary: 0000-0001-5803-7015
cg.creator.identifierShree Prasad Vista: 0000-0002-9008-7001
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1080/01904167.2022.2067053en
cg.isijournalISI Journalen
cg.issn0190-4167en
cg.issue19en
cg.journalJournal of Plant Nutritionen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAGRONOMYen
cg.subject.iitaCROP SYSTEMSen
cg.subject.iitaFARMING SYSTEMSen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaFOOD SYSTEMSen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaSOIL FERTILITYen
cg.volume45en
dc.contributor.authorPandit, N.R.en
dc.contributor.authorGaihre, Y.K.en
dc.contributor.authorChoudhary, D.en
dc.contributor.authorSubedi, R.en
dc.contributor.authorThapa, S.B.en
dc.contributor.authorMaharjan, S.en
dc.contributor.authorKhadka, D.en
dc.contributor.authorVista, S.P.en
dc.contributor.authorRusinamhodzi, Leonarden
dc.date.accessioned2022-10-20T08:22:06Zen
dc.date.available2022-10-20T08:22:06Zen
dc.identifier.urihttps://hdl.handle.net/10568/125128
dc.titleSlow but sure: the potential of slow-release nitrogen fertilizers to increase crop productivity and farm profit in Nepalen
dcterms.abstractReduction of nitrogen (N) input in cropping systems is critical to reduce environmental pollution and achieve sustainable development goals. Multi-location field trials for maize (n = 120) and rice (n = 84) were conducted across nine districts in Nepal during 2018 and 2019 to assess the potential of polymer coated urea (PCU) and urea briquette (UB) to increase agronomic N use efficiency (AEN), crop productivity and farm profits over conventional urea (CU). Nitrogen rates applied in PCU and UB treatments were 22% to 50% lower than CU (120 and 100 kg N ha−1 for maize and rice respectively). In maize, both PCU (8.4 t ha−1) and UB (8.5 t ha−1) applied at 50% and 25% lower N rates respectively produced similar grain yields compared with CU (7.9 t ha−1). Similar results were observed in rice where PCU and UB applied at 22% less N led to a productivity of 5.4 and 5.5 t ha−1 respectively over CU (5.1 t ha−1). Moreover, both PCU and UB increased maize and rice yields significantly compared with current farmer’s practices (FP). In both maize and rice, PCU and UB significantly increased partial factor productivity of N (PFPN) and agronomic NUE (AEN) compared with CU. Furthermore, PCU and UB increased farmer’s net income by US$88 and US$148 in maize and by US$10 and US$87 in rice respectively. These results suggest that PCU and UB could save N input by 22-50% while maintaining similar or even higher yield and higher benefit to farmers compared with CU.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2022-04-27
dcterms.bibliographicCitationPandit, N.R., Gaihre, Y.K., Choudhary, D., Subedi, R., Thapa, S.B., Maharjan, S., ... & Rusinamhodzi, L. (2022). Slow but sure: the potential of slow-release nitrogen fertilizers to increase crop productivity and farm profit in Nepal. Journal of Plant Nutrition, 45(19), 1-18.en
dcterms.extentp. 2986-3003en
dcterms.issued2022-11-26
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherInforma UK Limiteden
dcterms.subjectcrop productionen
dcterms.subjectmaizeen
dcterms.subjectnepalen
dcterms.subjectnitrogenen
dcterms.subjectureaen
dcterms.subjectriceen
dcterms.subjectfertilizersen
dcterms.typeJournal Article

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