Distribution and association of factors influencing bean common bacterial blight (Xanthomonas axonopodis pv. phaseoli) epidemics in Southern Ethiopia

Mengesha, Getachew Gudero; Terefe, Habtamu

doi:10.1080/03235408.2018.1551043

Cited by 12 publications

(6 citation statements)

References 37 publications

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“…Crops associated with maize inter-and mixed-cropping in the present survey were beans, sorghum, tubers, sunflower, safflower, banana, mango, papaya, avocado, rapeseed, Moringa and others, which are reported to diversify agro-ecosystems in which higher species richness may lower diseases impacts (Terefe et al, 2015), pest outbreaks (Zehnder et al, 2007) and weed infestations (Gudero & Terefe, 2018), hence improving crop productivity (Shaaban et al, 2023).…”

Section: Independent Variable Dfmentioning

confidence: 65%

“…Previous studies reported that intercropping has several mechanisms to reduce disease effects and weed infestations in various pathosystems (Bitew et al, 2021; Terefe et al, 2015). In a common bean field survey, Gudero and Terefe (2018) reported that lower intensity of common bacterial blight has been recorded from intercropped fields than sole cropped ones, due to reduced plant density and modified microclimate that might have reduced damp sites and humidity; otherwise, mono‐cropping could favour disease development (Reddy et al, 2013). In contrast, Fininsa and Yuen (2001) found that maize‐bean intercropping failed to reduce NLB incidence, which could be associated with the stature of the bean.…”

Section: Discussionmentioning

confidence: 99%

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A large‐scale survey reveals agro‐ecological factors influence spatio‐temporal distribution and epidemics of maize leaf blight: Implications for prioritizing sustainable management options

Terefe,

Mengesha,

Yitayih

et al. 2023

J of Sust Agri & Env

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IntroductionProductivity of maize (Zea mays L.) is predominantly constrained by diseases, weeds, and insect pests. The northern leaf blight (NLB) disease, caused by Exserohilum turcicum, inflicts significant maize yield losses in the tropics and humid tropics, including Ethiopia. A large‐scale field survey was conducted to assess the spatio‐temporal distribution of maize NLB in southern Ethiopia, and to determine the association of maize farming practices and agro‐ecological factors with NLB epidemics during 2016–2019.Materials and MethodsA total of 814 maize farms were assessed in 12 major maize‐producing districts. During the assessment, data related to the disease, crop, farming practices and agro‐ecological factors were collected. The associations of disease severity with independent factors were determined using the ordinal logistic regression model.ResultsThe results showed that all studied districts and zones recorded high (≥85%) NLB prevalence over the 4 years, and the disease continues to be a major threat to maize production. Variable disease severity was recorded across districts/zones during the study periods. The highest (75.45%) mean severity was recorded from Boreda, followed by Konso (75.36%), Bonke (71.61%) and Derashe (71.30%), while Mihirab Abaya (33.25%) and Arba Minch (38.285%) districts recorded the lowest mean severity. In the multiple regression model, zone, altitude, cropping year, land preparation, NPS fertilization, weeding practice, growth stage and cropping system were highly significantly (p < 0.0001) associated with disease severity.ConclusionMaize cultivation at an altitude of ≤1500 m with intermediate to good weeding practices, recommended NPS (51–100 kg ha–1) fertilization, mixed‐ and intercropping systems, sparse plant (≤20 plants m‒2) population, and vegetative to blistering growth stages had significant relationships with low (≤25, 26%–50%) disease severity, and can be considered as management options to reduce NLB pressure and yield losses to sustainably ensure maize production and productivity.

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Section: Independent Variable Dfmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 99%

A large‐scale survey reveals agro‐ecological factors influence spatio‐temporal distribution and epidemics of maize leaf blight: Implications for prioritizing sustainable management options

Terefe,

Mengesha,

Yitayih

et al. 2023

J of Sust Agri & Env

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“…Recently, it was recognized as a severe disease of bean in southern Ethiopia (Tadesse et al, 2009;Mengesha, and Yetayew, 2018) and it was reported for the first time in Belgium during August 2019 (Bultreys, and Gheysen, 2020).…”

Section: Bacterial Blightmentioning

confidence: 99%

A Review on the Management of Country Bean (Lablab purpureus L.) Diseases in Bangladesh

et al. 2022

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Purpose: Country bean (Lablab purpureus L.) is an important pulse crop consumed as a vegetable in the central and south-western regions of Bangladesh after eggplant and tomato. It promises to ameliorate nutritional demand from vegetables and has an excellent possibility for the world market. But the production is hampered due to infection of several diseases in field conditions.Research Method: This study was undertaken based on secondary data of existing literature from Bangladesh and other parts of the world. So far, many research works were done on this issue but those were not available to the policymakers, extension workers, and public in a systematic manner to date. Findings:In this paper, we tried to bring forth different aspects of phytopathological problems of country bean. It usually undergoes stresses from different soilborne to seed-borne pathogens and expresses symptoms from the seedling stage to maturity. Crop protection largely depends on the integration of host plants, seeds, agronomic practices, environmental footprints, and the use of appropriate agrochemicals based on the epidemiology of target pathogens. Here, we have also described effective management strategies against respective pathogens of the diverse category. These microorganisms attack at different stages of crop growth and can affect the host plants enormously to cause maximum yield loss. Research Limitations:The study focused on the management of country bean diseases based on biological and chemical approaches. It presents limited information on specific technologies in different agroecological zones.Originality/ Value: This study identified research gaps among Bangladesh and other countries. It also provides information to combat country bean diseases to the economic threshold level for ensuring sustainable crop yield.

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“…Fuente: autores. de inóculo inicial en el ambiente y bajos niveles de severidad (Goto, 1990;Mengesha & Yetayew, 2018).…”

Section: Incidencia De Enfermedadesunclassified

Caracterización y tipificación de los sistemas de producción de Gulupa (Passiflora edulis f. edulis Sims) en las regiones Norte y Centro - Occidente de Tolima

Polanco

Fúquene

2021

rev.investig.agrar.ambient.

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Contextualización: La gulupa es una de las frutas exóticas con mayor demanda en el mercado internacional y es el tercer fruto que más exporta el país. El departamento de Tolima incrementó el área de cultivos de gulupa en un 61 %, del 2015 al 2019, lo que indica la progresiva importancia económica del cultivo en el departamento. Vacío de conocimiento: A pesar de lo anterior, no se evidencian estudios de caracterización y/o tipificación de los productores, lo que limita una adecuada orientación de las políticas públicas de inversión, investigación y transferencia de tecnología. En consideración con esta situación, este estudio tuvo como objetivo caracterizar y tipificar los sistemas de producción de gulupa, teniendo en cuenta los aspectos productivos, tecnológicos y sanitarios vinculados al cultivo en los principales municipios productores de las regiones norte y centro - occidente del departamento de Tolima. Metodología: Con este propósito se diseñó y aplicó una encuesta estructurada para la captura de la información. La caracterización de los productores se realizó mediante análisis multivariado empleando análisis de correspondencia múltiple (ACM). La agrupación se llevó a cabo a través de análisis clúster, utilizando la distancia euclidiana y el método de Ward. Resultados y conclusiones: En general, los resultados revelaron un nivel tecnológico bajo-alto asociado a la producción de gulupa en el departamento. Se identificaron dos grupos de productores. El Grupo I (GI) agrupó los productores ubicados principalmente en Cajamarca y Casabianca con un nivel tecnológico alto y con empleo de buenas prácticas agrícolas (BPA), el Grupo II (GII) agrupó a los productores ubicados principalmente en Santa Isabel y Rovira con un nivel tecnológico bajo y uso deficiente de BPA. El empleo de sistema de riego y cubierta plástica fueron identificadas como las practicas tecnológicas asociadas al grado de tecnificación del cultivo de gulupa en el Tolima. Los niveles de incidencia de la marchitez vascular (Fusarium oxysporum) alcanzaron valores entre el 4 al 59 % en los principales municipios productores, constituyéndose así en una potencial limitante sanitaria para la sostenibilidad en el tiempo del agronegocio de gulupa en el departamento.

show abstract

Distribution and association of factors influencing bean common bacterial blight (Xanthomonas axonopodis pv. phaseoli) epidemics in Southern Ethiopia

Cited by 12 publications

References 37 publications

A large‐scale survey reveals agro‐ecological factors influence spatio‐temporal distribution and epidemics of maize leaf blight: Implications for prioritizing sustainable management options

A large‐scale survey reveals agro‐ecological factors influence spatio‐temporal distribution and epidemics of maize leaf blight: Implications for prioritizing sustainable management options

A Review on the Management of Country Bean (<em>Lablab purpureus</em> L.) Diseases in Bangladesh

Caracterización y tipificación de los sistemas de producción de Gulupa (Passiflora edulis f. edulis Sims) en las regiones Norte y Centro - Occidente de Tolima

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