Optimizing Nitrogen Use Efficiency and Maize Yield under Varying Fertilizer Rates in Kenya

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dc.contributor.authorNduwimana, Desire
dc.contributor.authorMochoge, Benson
dc.contributor.authorDanga, Benjamin
dc.contributor.authorMasso, Cargele
dc.contributor.authorMaitra, Sagar
dc.contributor.authorGitari, Harun I.
dc.date.accessioned2021-03-18T08:20:24Z
dc.date.available2021-03-18T08:20:24Z
dc.date.issued2020
dc.descriptionAn Article Published in International Journal of Bioresource Scienceen_US
dc.description.abstractNitrogen (N) is a paramount macronutrient for plant growth, development and production. This study was carried out to determine the effect of N fertilizer at different rates on maize crop yield, N content and N use efficiency (NUE) in Rongo sub-county (Kambija and Koderobara sites), Western Kenya. The treatments were N (CAN) at four levels (0, 25, 50 and 75 kg N ha-1). In Kambija, maize yield at 50 kg N ha-1 (4.34 t ha-1) was 62% higher than the control while in Koderobara, the highest yield (3.41 t ha-1) was recorded at 50 kg N ha-1 and it was 74% higher than in the control. The highest N content of 21 and 20 g kg-1 were noted at heading growth stage in Kambija and Koderobara, respectively. Generally, partial factor productivity (PFP), partial nitrogen balance (PNB), agronomic N efficiency (N-AE), and nitrogen fertilizer recover (NFR) decreased with increasing N application across the sites. The yields exhibited strong relationship with N uptake in the plant tissues especially at harvest, with coefficient of determination ranging between 0.72 and 0.92. The study therefore has showed that application of N at 50 kg N ha-1 was the most viable hence such information needs to be disseminated to farmers.en_US
dc.identifier.citationNduwimana, D., Mochoge, B., Danga, B., Masso, C., Maitra, S. and Gitari, H. (2020). Optimizing Nitrogen Use Efficiency and Maize Yield under Varying Fertilizer Rates in Kenya. International Journal of Bioresource Science, 7(2): 63-73.en_US
dc.identifier.issn2347-9655
dc.identifier.issn2454-9541
dc.identifier.urihttps://renupublishers.com/images/article/IJBSv7n2d.pdf
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/21914
dc.language.isoenen_US
dc.publisherAssociation for Agriculture, Environment and Biotechnologyen_US
dc.subjectNitrogen use efficiencyen_US
dc.subjectMaize yielden_US
dc.subjectNitrogen fertilizeren_US
dc.titleOptimizing Nitrogen Use Efficiency and Maize Yield under Varying Fertilizer Rates in Kenyaen_US
dc.typeArticleen_US
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