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

dc.contributor.authorPandit, N.R.
dc.contributor.authorGaihre, Y.K.
dc.contributor.authorChoudhary, D.
dc.contributor.authorSubedi, R.
dc.contributor.authorThapa, S.B.
dc.contributor.authorMaharjan, S.
dc.contributor.authorKhadka, D.
dc.contributor.authorVista, S.P.
dc.contributor.authorRusinamhodzi, L.
dc.date.accessioned2022-10-20T15:16:46Z
dc.date.available2022-10-20T15:16:46Z
dc.date.issued2022-04-27
dc.identifier.citationPandit, 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.
dc.identifier.issn0190-4167
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7893
dc.description.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.
dc.description.sponsorshipUnited States Agency for International Development
dc.format.extent1-18
dc.language.isoen
dc.subjectCrop Production
dc.subjectMaize
dc.subjectNitrogen
dc.subjectRice
dc.subjectFertilizers
dc.subjectCropping Systems
dc.subjectAgronomy
dc.subjectFarmers
dc.subjectGrain
dc.subjectNutrients
dc.subjectSoil Fertility
dc.titleSlow but sure: the potential of slow-release nitrogen fertilizers to increase crop productivity and farm profit in Nepal
dc.typeJournal Article
cg.contributor.affiliationInternational Maize and Wheat Improvement Center
cg.contributor.affiliationInternational Fertilizer Development Center
cg.contributor.affiliationNational Soil Science Research Center, Nepal
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAsia
cg.coverage.countryNepal
cg.coverage.hubHeadquarters and Western Africa Hub
cg.identifier.bibtexciteidPANDIT:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCrop Systems
cg.iitasubjectFarming Systems
cg.iitasubjectFood Security
cg.iitasubjectFood Systems
cg.iitasubjectGrain Legumes
cg.iitasubjectMaize
cg.iitasubjectNutrition
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.iitasubjectSmallholder Farmers
cg.iitasubjectSoil Fertility
cg.journalJournal of Plant Nutrition
cg.notesPublished online: 27 Apr 2022
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/01904167.2022.2067053
cg.futureupdate.requiredNo
cg.identifier.issue19
cg.identifier.volume45
cg.contributor.acknowledgementsThe United States Agency for International Development (USAID) provided support for this research through “Feed the Future Nepal Seed and Fertilizer Project (Cooperative Agreement number AID-367-IO-16-00001).” Polymer coated urea and urea briquette were provided by IFDC through “Feed the Future Soil Fertility Technology Adoption, Policy Reform and Knowledge Management (Cooperative Agreement Number AID-BFS-IO15-00001).” We thank cooperatives members/volunteers across the district for their support in selecting farmers field to conduct the trials. We would like to thank our field staff Mr. Roshan Shah, Mr. Uttam Kunwar, Mr. Dilli Chalisey, Mr. Resham KC, Mr. Rajendra Upadhyaya, Mr. Kedar Nath Nepal and Mrs. Srijana Poudel for their practical assistance to monitor and manage the field trials


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