Progression of wheat Tan spot under different bioclimatic stages and agricultural practices

Salma Tissaoui, Noura Omri-Benyoussef, Hatem Chaar, Marwa Hassine, Jean-Stephane Venisse, Bouzid Nasraoui and Amira Mougou-Hamdane
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Salma Tissaoui: Laboratory of Bioggressors and Integrated Pest Management in Agriculture (LR14AGR02), National Agronomic Institute of Tunisia, University of Carthage Tunis, Republic of Tunisia
Noura Omri-Benyoussef: Crop Improvement Laboratory, National Institute of Agronomy of Tunisia, Ariana, Republic of Tunisia
Marwa Hassine: Laboratory of Genetics and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis, Republic of Tunisia
Jean-Stephane Venisse: Clermont Auvergne University, INRAE, Clermont-Ferrand, France
Bouzid Nasraoui: Laboratory of Bioggressors and Integrated Pest Management in Agriculture (LR14AGR02), National Agronomic Institute of Tunisia, University of Carthage Tunis, Republic of Tunisia
Amira Mougou-Hamdane: Laboratory of Bioggressors and Integrated Pest Management in Agriculture (LR14AGR02), National Agronomic Institute of Tunisia, University of Carthage Tunis, Republic of Tunisia

Plant Protection Science, 2023, vol. 59, issue 3, 233-244

Abstract: Tan spot, caused by Pyrenophora tritici-repentis, is a severe worldwide wheat foliar disease and has become common in Tunisia. Two hundred wheat field surveys were conducted in northern Tunisia during the 2017-2019 seasons to determine disease intensity and the correlation of the tan spot with agricultural practices and environmental factors. The disease infested 67% of the visited regions. The highest prevalence (87.5%), incidence (> 30%), and severity (> 10%) were observed in sub-humid regions, contrary to the middle semi-arid regions. Logistic regression was used to analyse the correlation of incidence and severity with various factors as independent variables. In a multiple variable model, the bioclimatic stages, variety, previous crop, humidity, and rainfall were significantly associated with tan spot incidence and severity. High incidence and severity were significantly correlated to the sub-humid regions, varieties Maâli, Razzak, Karim, and Carioca, rainfall, high level of humidity, and monoculture. The correlation between the tan spot and several environmental factors must be considered to ensure successful and sustainable disease management strategies.

Keywords: correlation; fields wheat; incidence; severity; sub-humid; previous crop; variety (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:59:y:2023:i:3:id:103-2022-pps

DOI: 10.17221/103/2022-PPS

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