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Epidemiological factors of septoria tritici blotch (Zymoseptoria tritici) in durum wheat (Triticum turgidum) in the highlands of Wollo, Ethiopia

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Title Epidemiological factors of septoria tritici blotch (Zymoseptoria tritici) in durum wheat (Triticum turgidum) in the highlands of Wollo, Ethiopia
 
Creator Hailemariam, Bogale Nigir
Kidane, Yosef Gebrehawaryat
Ayalew, Amare
 
Subject hard wheat
plant diseases
mycosphaerella graminicola
morbidity
site factors
climatic factors
cultural methods
trigo duro
enfermedades de las plantas
morbosidad
 
Description Septoria tritici blotch (STB) (Zymoseptoria tritici) is a major disease of durum wheat, an economic crop grown in the highlands of Wollo in Ethiopia.
To determine the status of this disease, we conducted surveys in five districts of Wollo (Meket, Woreilu, Wadila, Jama, and Dessie Zuria) during the 2015 cropping season. We visited 75 farm plots to determine the prevalence, incidence, and severity of STB.
STB prevalence varied among locations, genotypes, planting dates, growth stages, previous crops, plant population, weed population, and soil types. Similarly, disease intensity also varied along all independent variables. The level of incidence was high in all the visited districts, and the level severity ranged from 9.9 to 59.3% while the incidence varied from 50 to 100%. The mean differences in incidence and severity within the districts’ variable classes, altitude, varieties, growth stage, plant population, planting date, previous crop, weed population, and soil type were high. The independent variables, districts, altitude, varieties, growth stage, plant population, planting date, previous crops, weed population, and soil type, were significantly associated with high incidence and severity of STB as single predictor in the logistic regression model. A reduced multiple variable model was fitted using districts, altitude, varieties, growth stage, plant population, planting date, previous crop, weed population, and soil type as independent variables. High incidence (> 50%) and severity (> 25%) had a high probability of association to all independent variables, except previous crop. Low disease incidence (≤ 50%) and low disease severity (≤ 25%) had high probability of association to the previous crop.
Environmental variables, cultivation practice, and responses were important for the development of STB. Therefore, these factors must be considered in designing strategies for the effective management of STB.
 
Date 2020-12
2021-01-07T14:46:09Z
2021-01-07T14:46:09Z
 
Type Journal Article
 
Identifier Hailemariam, B.N.; Kidane, Y.; Ayalew, A. (2020) Epidemiological factors of septoria tritici blotch (Zymoseptoria tritici) in durum wheat (Triticum turgidum) in the highlands of Wollo, Ethiopia. Ecological Processes 9: 61. ISSN: 2192-1709.
2192-1709
https://hdl.handle.net/10568/110764
https://doi.org/10.1186/s13717-020-00258-1
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 9: 61
application/pdf
 
Publisher Springer Science and Business Media LLC
 
Source Ecological Processes