Research Article Ecoepidemiological Model and Analysis of MSV Disease Transmission Dynamics in Maize Plant Haileyesus Tessema Alemneh , 1 Oluwole Daniel Makinde , 2 and David Mwangi Theuri 3 1 Pan African University Institute of Basic Sciences, Technology and Innovation, Nairobi, Kenya 2 Faculty of Military Science, Stellenbosch University, Stellenbosch, South Africa 3 Department of Mathematics, Jomo Kenyatta University, Nairobi, Kenya Correspondence should be addressed to Haileyesus Tessema Alemneh; haila.tessema@gmail.com Received 1 September 2018; Revised 12 November 2018; Accepted 20 December 2018; Published 20 January 2019 Academic Editor: Harvinder S. Sidhu Copyright © 2019 Haileyesus Tessema Alemneh et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In this paper, an ecoepidemiological deterministic model for the transmission dynamics of maize streak virus (MSV) disease in maize plant is proposed and analysed qualitatively using the stability theory of diferential equations.Te basic reproduction number with respect to the MSV free equilibrium is obtained using next generation matrix approach. Te conditions for local and global asymptotic stability of MSV free and endemic equilibria are established. Te model exhibits forward bifurcation and the sensitivity indices of various embedded parameters with respect to the MSV eradication or spreading are determined. Numerical simulation is performed and dispalyed graphically to justify the analytical results. 1. Introduction Maize (Zea mays L.) is grown globally across temperate and tropical zones, spanning all continents [1]. It is the most widely grown and consumed staple crop in Africa with more than 100 million Africans depending on it as their main food source which is annually planted over an area of 15.5 million hectares [2, 3]. In Ethiopia, maize is the most cereal gown which ranks frst in yield per hectare and is grown in all 11 administrative regions [4]. It is the primary food, averaging slightly more than 20% of daily caloric intake. About 9 million smallholder farmers grow maize and 75% of the maize produced is consumed as food [5, 6]. Te reports of Ethiopian Commodity Exchange show that three-fourth of maize produced is used for household expenditure; only about ten percent is marketed and the remaining is used for seed, in-kind expenses for labor and animal feed [6]. Maize production is constrained by many abiotic and biotic factors of which maize streak disease (MSD) is the major biotic threat in Ethiopia. It is the most destructive and devastating disease of maize in Sub-Saharan Africa which is caused by maize streak virus (MSV; genus Mastrevirus, family Geminiviridae) [3, 7] including Ethiopia [4]. MSV is a major constraint to maize and over 80 other crops species [8] including oats, wheat, sorghum, millet, fnger millet, and sugarcane [2, 9]. MSD is a major threat to cereal crops amongst smallholder farmers in Sub-Saharan Africa causing up to US $ 480 million losses annually [10]. MSD is a viral disease which has single-component, circular, ssDNA [2, 3]. MSV has been reported to be the most economically sig- nifcant causing 100% yield loss if infection occurs in the frst three weeks of planting maize [3, 11]. It is irregular in nature and transmitted in a persistent manner by leafoppers in the genus Cicadulina [2, 5]. Globally, 22 species of Cicadulina leafoppers have been reported, of which 18 are found in Africa. Cicadulina mbila is the most predominant vector and the most important in the epidemiology of the virus [2] from the 8 known vectors of MSV in the genus. In Ethiopia, fve of these 22 known species of Cicadulina have been recorded [4]. Mathematical modeling is an important tool used in analyzing the dynamics of infectious diseases. Several models have been formulated and analyzed to explain the dynamics of plant disease transmission. Te authors in [12] investigated the impacts of foliar diseases on maize plant population Hindawi International Journal of Mathematics and Mathematical Sciences Volume 2019, Article ID 7965232, 14 pages https://doi.org/10.1155/2019/7965232