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oai:recercat.cat:20.500.12327/20082025-10-22T11:17:55Zcom_2072_4428com_2072_4427col_2072_487898

Evaluation of Fungicides and Application Strategies for the Management of the Red Leaf Blotch Disease of Almond Torguet Pomar, Laura Zazurca, Lourdes Martínez, Guillem Pons-Solé, Gemma Luque, Jordi Miarnau, Xavier Producció Vegetal Fructicultura Protecció Vegetal Sostenible 633 Red leaf blotch (RLB) of almond, caused by Polystigma amygdalinum, is an important foliar disease of this nut tree in the Mediterranean basin and especially in Spain. In recent years, the control of this disease has become a key factor in the management of Spanish almond orchards. The management of RLB is not easy due to intrinsic factors of the disease (e.g., long infection and latency periods) and the low number of registered fungicides in this country. From 2015 to 2019, different field trials were conducted in the Lleida region, NE Spain, to evaluate the efficacy of several fungicide products and of application strategies to control this disease. Systemic fungicides, which included fluopyram, trifloxystrobin, and mixtures of fluopyram + trifloxystrobin and pyraclostrobin + boscalid, performed better than contact and penetrant products and showed up to 90% control against RLB. However, the efficacy of the tested fungicides varied depending on the year. In terms of application strategies, when fungicide applications were conducted following specific meteorological conditions (after 15 days from >15 mm rainfalls with ≈10–15 ◦C as the minimum average temperature), their efficacy was comparable to that of calendar-based treatments (every 14, 21, or 31 days from petal fall) but with fewer applications (depending on the year, 2–4 applications as compared with 5–9 for calendar treatments) info:eu-repo/semantics/publishedVersion 2022-06-04 info:eu-repo/semantics/article Torguet, Laura, Lourdes Zazurca, Guillem Martínez, Gemma Pons-Solé, Jordi Luque, and Xavier Miarnau. 2022. "Evaluation Of Fungicides And Application Strategies For The Management Of The Red Leaf Blotch Disease Of Almond". Horticulturae 8 (6): 501. doi:10.3390/horticulturae8060501 2311-7524 http://hdl.handle.net/20.500.12327/2008 https://doi.org/10.3390/horticulturae8060501 eng Horticulturae INIA-FEDER/Programa Estatal de promoción del talento y su empleabilidad en I+D+I/RTA2013-00004-C03-01/ES/Estrategias de control de enfermedades fúngicas aéreas y de raíz en frutales mediterráneos, basadas en criterios epidemiológicos y en la utilización de micorrizas arbusculares/ INIA-FEDER/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/ MC/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 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess 13 MDPI