Preventive and Curative Effects of Treatments to Manage Strawberry Root and Crown Rot Caused by Neopestalotiopsis rosae .
| Autor: | Acosta-González U; Posgrado en Proteccion Vegetal, Universidad Autonoma Chapingo, Texcoco, Estado de México 56230, México., Leyva-Mir SG; Departamento de Parasitología Agrícola, Universidad Autónoma Chapingo, Texcoco, Estado de México 56230, México., Silva-Rojas HV; Producción de semillas, Colegio de Postgraduados, Campus Montecillo, Texcoco, Estado de México 56230, México., Rebollar-Alviter A; Centro Regional Morelia, Universidad Autónoma Chapingo, Periférico Paseo de la República Poniente, Morelia, Michoacán 58170, México. |
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| Jazyk: | angličtina |
| Zdroj: | Plant disease [Plant Dis] 2024 May; Vol. 108 (5), pp. 1278-1288. Date of Electronic Publication: 2024 May 01. |
| DOI: | 10.1094/PDIS-05-23-0958-RE |
| Abstrakt: | Strawberry root and crown rot caused by the fungus Neopestalotiopsis rosae is an emerging disease that has caused yield losses of up to 70% in Mexico and other regions worldwide. This research evaluated the effects of biological and chemical fungicides applied as preventive and curative applications for controlling root and crown rot caused by N. rosae in strawberries under greenhouse conditions. Treatments included these chemical fungicides: prochloraz, prochloraz + thiram, cyprodinil + fludioxonil, difenoconazole + azoxystrobin, iprodione, captan, thiram, pydiflumetofen + fludioxonil, fluxapyroxad + pyraclostrobin, and hymexazol; each was applied at commercial doses. Also tested were biological treatments based on Trichoderma koningiopsis , T. asperellum , Streptomyces sp., and Bacillus amyloliquefaciens strain D747 ( B. velezensis ). Disease incidence, severity, plant mortality, root length, and dry weight were determined. Results showed that overall, preventive applications of the fungicides pydiflumetofen + fludioxonil, cyprodinil + fludioxonil, and prochloraz resulted in the smallest area under the disease progress curve and the lowest final disease incidence, severity, and plant mortality. An intermediate group of effective treatments entailed hymexazol, iprodione, T. asperellum , and T. koningiopsis (50 to 75% efficacy). Treatments with greater efficacy (99 to 100%), pydiflumetofen + fludioxonil, cyprodinil + fludioxonil, and prochloraz, also had maximal total plant biomass vis-à-vis the untreated control. By contrast, each treatment's efficacy was significantly reduced when applied curatively (0 to 37% treatment efficacy). These results suggest that certain treatments are useful for controlling strawberry root and crown rot caused by N. rosae when applied preventively (as root dipping). These results will contribute to designing more effective management programs for root and crown rot caused by N. rosae on strawberry. Competing Interests: The author(s) declare no conflict of interest. |
| Databáze: | MEDLINE |
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