Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight

Northern corn leaf blight (NCLB), caused by Exserohilum turcicum (E. turcicum), is one of the most common maize (Zea mays L.) diseases worldwide. To determine the crop damage and economic losses caused by NCLB and propose economic damage thresholds (EDTs), 16 field experiments were performed for sev...

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Autores principales: De Rossi, Roberto Luis, Guerra, Fernando Andrés, Plazas, María Cristina, Vuletic, Ezequiel Esteban
Formato: Artículo
Lenguaje:Español
Publicado: Elsevier Ltd 2022
Materias:
Q Ciencia (General)
R Medicina (General)
S Agricultura (General)
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3287/1/A_DeRossi_Guerra_Plazas.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3287
record_format dspace
spelling I38-R144-32872025-05-30T13:40:21Z http://pa.bibdigital.ucc.edu.ar/3287/ Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight De Rossi, Roberto Luis Guerra, Fernando Andrés Plazas, María Cristina Vuletic, Ezequiel Esteban Q Ciencia (General) R Medicina (General) S Agricultura (General) Northern corn leaf blight (NCLB), caused by Exserohilum turcicum (E. turcicum), is one of the most common maize (Zea mays L.) diseases worldwide. To determine the crop damage and economic losses caused by NCLB and propose economic damage thresholds (EDTs), 16 field experiments were performed for seven crop seasons (2010–11 to 2016–17) during different naturally occurring outbreaks of NCLB in central-northern Córdoba province, Argentina. NCLB severity gradients were generated by applying different fungicides and doses at different growth stages to seven susceptible (S) and nine moderately susceptible (MS) hybrids. Plots were arranged in a completely randomized block design with four replications. Severity was evaluated at the R4 growth stage by estimating the percentage of leaves affected; and grain yield in kg ha−1 per plot was also estimated. A critical-point yield model was fitted with NCLB severity and the EDT and the action damage threshold (ADT) were calculated. The management regime generated disease gradients with severities ranging between 3.2 and 33.1. There was a statistically significant negative correlation between severity and yield (R2 = 0.52; p = 0.001). On average, for each percentage point increase, in NCLB severity, 20.15 kg t−1 of yield were lost; MS and S hybrids were 23.88 kg t−1 and 15.21 kg t−1, respectively. The mean EDT was 1.09% of severity and the mean ADT was 0.88%. Furthermore, the mean economic losses were 243.6 USD ha−1 [122.0–353.2]. The generated information can play a role in optimizing the use of fungicides for NCLB control, reducing disease control costs, and protecting the ecological environment of farmlands. Elsevier Ltd 2022-04 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3287/1/A_DeRossi_Guerra_Plazas.pdf De Rossi, Roberto Luis ORCID: https://orcid.org/0000-0003-0130-5415 <https://orcid.org/0000-0003-0130-5415>, Guerra, Fernando Andrés ORCID: https://orcid.org/0000-0003-1636-6210 <https://orcid.org/0000-0003-1636-6210>, Plazas, María Cristina ORCID: https://orcid.org/0000-0002-5311-1914 <https://orcid.org/0000-0002-5311-1914> and Vuletic, Ezequiel Esteban (2022) Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight. Crop Protection, 154. ISSN 0261-2194 https://www.sciencedirect.com/science/article/pii/S0261219421003719?via%3Dihub info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.cropro.2021.105901
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic Q Ciencia (General)
R Medicina (General)
S Agricultura (General)
spellingShingle Q Ciencia (General)
R Medicina (General)
S Agricultura (General)
De Rossi, Roberto Luis
Guerra, Fernando Andrés
Plazas, María Cristina
Vuletic, Ezequiel Esteban
Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
topic_facet Q Ciencia (General)
R Medicina (General)
S Agricultura (General)
description Northern corn leaf blight (NCLB), caused by Exserohilum turcicum (E. turcicum), is one of the most common maize (Zea mays L.) diseases worldwide. To determine the crop damage and economic losses caused by NCLB and propose economic damage thresholds (EDTs), 16 field experiments were performed for seven crop seasons (2010–11 to 2016–17) during different naturally occurring outbreaks of NCLB in central-northern Córdoba province, Argentina. NCLB severity gradients were generated by applying different fungicides and doses at different growth stages to seven susceptible (S) and nine moderately susceptible (MS) hybrids. Plots were arranged in a completely randomized block design with four replications. Severity was evaluated at the R4 growth stage by estimating the percentage of leaves affected; and grain yield in kg ha−1 per plot was also estimated. A critical-point yield model was fitted with NCLB severity and the EDT and the action damage threshold (ADT) were calculated. The management regime generated disease gradients with severities ranging between 3.2 and 33.1. There was a statistically significant negative correlation between severity and yield (R2 = 0.52; p = 0.001). On average, for each percentage point increase, in NCLB severity, 20.15 kg t−1 of yield were lost; MS and S hybrids were 23.88 kg t−1 and 15.21 kg t−1, respectively. The mean EDT was 1.09% of severity and the mean ADT was 0.88%. Furthermore, the mean economic losses were 243.6 USD ha−1 [122.0–353.2]. The generated information can play a role in optimizing the use of fungicides for NCLB control, reducing disease control costs, and protecting the ecological environment of farmlands.
format Artículo
author De Rossi, Roberto Luis
Guerra, Fernando Andrés
Plazas, María Cristina
Vuletic, Ezequiel Esteban
author_facet De Rossi, Roberto Luis
Guerra, Fernando Andrés
Plazas, María Cristina
Vuletic, Ezequiel Esteban
author_sort De Rossi, Roberto Luis
title Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
title_short Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
title_full Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
title_fullStr Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
title_full_unstemmed Crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
title_sort crop damage, economic losses, and the economic damage threshold for northern corn leaf blight
publisher Elsevier Ltd
publishDate 2022
url http://pa.bibdigital.ucc.edu.ar/3287/1/A_DeRossi_Guerra_Plazas.pdf
work_keys_str_mv AT derossirobertoluis cropdamageeconomiclossesandtheeconomicdamagethresholdfornortherncornleafblight
AT guerrafernandoandres cropdamageeconomiclossesandtheeconomicdamagethresholdfornortherncornleafblight
AT plazasmariacristina cropdamageeconomiclossesandtheeconomicdamagethresholdfornortherncornleafblight
AT vuleticezequielesteban cropdamageeconomiclossesandtheeconomicdamagethresholdfornortherncornleafblight
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