Maize Productivity, Economic Returns and Phosphorus Use Efficiency as Influenced by Lime, Minjingu Rock Phosphate and NPK Inorganic Fertilizer

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dc.contributor.authorCheptoek, Rodah P.
dc.contributor.authorGitari, Harun I.
dc.contributor.authorMochoge, Benson
dc.contributor.authorKisaka, Oscar M.
dc.contributor.authorOtieno, Erick
dc.contributor.authorMaitra, Sagar
dc.contributor.authorNasar, Jamal
dc.contributor.authorMahmoud, F. Seleiman
dc.date.accessioned2021-09-23T08:08:43Z
dc.date.available2021-09-23T08:08:43Z
dc.date.issued2021
dc.descriptionA research article published in International Journal of Bioresource Scienceen_US
dc.description.abstractThis study was conducted to examine the effects of Lime, Minjingu Rock Phosphate (MRP) and inorganic NPK fertilizer on maize productivity, profitability and phosphorus use efficiency (PUE) based on grain yield (PUEY) and economic returns (PUEE). The study was carried out for two rain seasons in Kenya and the treatments were Lime, MRP, NPK, Lime + MRP, Lime + NPK, and a control. The highest height (185 cm) was recorded in MRP treated plots whereas the lowest values were observed in control (162 cm) and Lime (166 cm). The lowermost yield of 2.2 t ha-1 was attained from the non-amended plots. The value increased by 4.0, 2.9, 1.8, 1.7 and 0.8 t ha-1 in MRP, NPK, Lime + MRP, Lime + NPK and Lime treatments. The use of MRP proved to be the most lucrative with a disposable income of US$ 2122ha-1. PUEY was such that Lime + NPK (95 kg of maize grain yield for every kg of p supplied) < Lime + MRP (116) < NPK (125) < control (139) < MRP (170) < Lime (188) whereas PUEE was lowest in plots treated with Lime + NPK (38 $ kg-1) and Lime + MRP (46 $ kg-1), and highest in Lime (75 $ kg-1) and MRP (68 $ kg-1) plots. The results from the study indicate that MRP amendment is essential in optimizing not only maize productivity and economic returns but also phosphorus efficacy.en_US
dc.identifier.citationCheptoek, R.P., Gitari, H.I., Mochoge, B., Kisaka, O.M., Otieno, E., Maitra, S., Nasar, J. and Seleiman, M.F. (2021). Maize Productivity, Economic Returns and Phosphorus Use Efficiency as Influenced by Lime, Minjingu Rock Phosphate and NPK Inorganic Fertilizer. International Journal of Bioresource Science, 08(01): 47-60en_US
dc.identifier.issn2454-9541
dc.identifier.urihttps://renupublishers.com/images/article/IJBSv8n1g.pdf
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/22610
dc.language.isoenen_US
dc.publisherAssociation for Agriculture Environment and Biotechnologyen_US
dc.titleMaize Productivity, Economic Returns and Phosphorus Use Efficiency as Influenced by Lime, Minjingu Rock Phosphate and NPK Inorganic Fertilizeren_US
dc.typeArticleen_US
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