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Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator

dc.contributor.authorAkinseye, F.M.
dc.contributor.authorAjegbe, H.A.
dc.contributor.authorKamara, A.Y.
dc.contributor.authorAdefisan, E.A.
dc.contributor.authorWhitbread, A.M.
dc.date.accessioned2022-07-28T09:17:03Z
dc.date.available2022-07-28T09:17:03Z
dc.date.issued2020-01-16
dc.identifier.citationAkinseye, F.M., Ajegbe, H.A., Kamara, A.Y., Adefisan, E.A. & Whitbread, A.M. (2020). Understanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator. Journal of Plant Nutrition, 43(6), 834-850.
dc.identifier.issn0190-4167
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7584
dc.description.abstractThe Agricultural Production Systems simulator (APSIM) model was calibrated and evaluated using two improved sorghum varieties conducted in an experiment designed in a randomized complete block, 2014–2016 at two research stations in Nigeria. The results show that the model replicated the observed yield accounting for yield differences and variations in phenological development between the two sorghum cultivars. For early-maturing cultivar (ICSV-400), the model indicated by low accuracy with root means square error (RMSE) for biomass and grain yields of 20.3% and 23.7%. Meanwhile, Improved-Deko (medium-maturing) cultivar shows the model was calibrated with low RMSE (11.1% for biomass and 13.9% for grain). Also, the model captured yield response to varying Nitrogen (N) fertilizer applications in the three agroecological zones simulated. The N-fertilizer increased simulated grain yield by 26–52% for ICSV-400 and 19–50% for Improved-Deko compared to unfertilized treatment in Sudano-Sahelian zone. The insignificant yield differences between N-fertilizer rates of 60 and 100 kgha−1 suggests 60 kgNha−1 as the optimal rate for Sudano-Sahelian zone. Similarly, grain yield increased by 23–57% for ICSV-400 and 19–59% for Improved Deko compared to unfertilized N-treatment while the optimal mean grain yield was simulated at 80 kgNha−1 in the Sudan savanna zone. In the northern Guinea savanna, mean simulated grain yield increased by 8–20% for ICSV-400 and 12–23% for Improved-Deko when N-fertilizer was applied compared to unfertilized treatment. Optimum grain yield was obtained at 40 kgha−1. Our study suggests a review of blanket recommended fertilizer rates across semi-arid environments for sorghum to maximize productivity and eliminate fertilizer losses, means of adaptation strategies to climate variability.
dc.format.extent834-850
dc.language.isoen
dc.subjectClimate Change
dc.subjectFertilizers
dc.subjectAgriculture
dc.subjectWater Availability
dc.subjectSorghum
dc.subjectNigeria
dc.titleUnderstanding the response of sorghum cultivars to nitrogen applications in the semi-arid Nigeria using the agricultural production systems simulator
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.crpMaize
cg.contributor.affiliationInternational Crop Research Institute for the Semi-Arid Tropics
cg.contributor.affiliationFederal University of Technology, Akure
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationAfrican Centre of Meteorological Application for Development, Niger Republic
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidAKINSEYE:2020
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectClimate Change
cg.iitasubjectCrop Systems
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalJournal of Plant Nutrition
cg.notesPublished online: 16 Jan 2020
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCopyrighted; all rights reserved
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1080/01904167.2020.1711943
cg.iitaauthor.identifierFolorunso Mathew Akinseye: 0000-0002-8677-6306
cg.iitaauthor.identifierAlpha Kamara: 0000-0002-1844-2574
cg.iitaauthor.identifierAnthony Whitbread: 0000-0003-4840-7670
cg.futureupdate.requiredNo
cg.identifier.issue6
cg.identifier.volume43


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