Modeling the airborne inoculum of Polystigma amygdalinum to optimize fungicide programs against almond red leaf blotch
Visualitza/Obre
Autor/a
Lázaro, Elena
Vicent, Antonio
Data de publicació
2023-09-27ISSN
0191-2917
Resum
Red leaf blotch (RLB) of almond, caused by the ascomycete Polystigma amygdalinum, is a severe foliar disease endemic in the Mediterranean Basin and Middle East regions. Airborne ascospores of P. amygdalinum were monitored from 2019 to 2021 in two almond orchards in Lleida, Spain, and a Bayesian beta regression was further used to model its seasonal dynamics. The selected model incorporated accumulated degree-days (ADD) and ADD considering both vapor pressure deficit and rainfall as fixed effects, and a random effect for the year and location. The performance of the model was evaluated in 2022 to optimize RLB fungicide programs, by comparing the use of model predictions and action thresholds with the standard calendar-based program. Two variants were additionally considered in each program to set the frequency between applications, based on: i) a fixed frequency of 21 days, or ii) specific meteorological criteria (spraying within seven days after rainfalls greater than 10 mm, with daily mean temperatures between 10 and 20ºC, and with minimum 21 days between applications). Programs were evaluated in terms of RLB incidence and number of applications. The program based on the model with periodic fungicide applications was similarly effective as the standard, resulting only in a 2.6% higher RLB incidence but with fewer applications (three to four, compared with seven in the standard). When setting the frequency between applications by using the meteorological criteria, a higher reduction in the number of applications (two to three) was observed, while RLB incidence increased by roughly 16% in both programs. Therefore, the model developed in this study may represent a valuable tool towards a more sustainable fungicide schedule for the control of almond RLB in northeast Spain.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
Anglès
Matèries (CDU)
632 - Malalties i protecció de les plantes
Pàgines
43
Publicat per
American Phytopathological Society
Publicat a
Plant Disease
Citació
Pons-Solé, Gemma, Laura Torguet, Neus Marimon, Xavier Miarnau, Elena Lázaro, Antonio Vicent, and Jordi Luque. 2023. “Modeling the Airborne Inoculum of Polystigma Amygdalinum to Optimize Fungicide Programs against Almond Red Leaf Blotch”. Plant Disease. September. doi:10.1094/pdis-08-23-1540-re.
Número de l'acord de la subvenció
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2017-00009-C04-01/ES/Estrategias de control de enfermedades fúngicas del almendro basadas en la epidemiología, en la genética de la resistencia y en las prácticas de cultivo/
MCIN/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I y Programa Estatal de I+D+I orientada a los retos de la sociedad/PID2020-114648RR-C31/ES/DESARROLLO Y APLICACIÓN DE MODELOS PREDICTIVOS, AGENTES DE BIOCONTROL Y MANEJO DE LA RESISTENCIA EN EL CONTROL INTEGRADO DE ENFERMEDADES DEL ALMENDRO/NEW4ALMOND
FEDER/ / /EU/ /
Programa
Fructicultura
Protecció Vegetal Sostenible
Aquest element apareix en la col·lecció o col·leccions següent(s)
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Drets
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