Evaluación de fungicidas y momentos de aplicación para el control de sarna en mandarinos Clemenules y Okitsu
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Abstract
To evaluate pyraclostrobin effectiveness, compared with other fungicides, for the control of citrus scab in commercial orchards of ‘Clemenules’ and ‘Okitsu’ mandarin, at two locations in Corrientes, Argentina, different frequencies and application moments combinations of carbendazin 50%, dithianon 70%, mancozeb 80%, pyraclostrobin 25% and copper oxychloride 50% were tested during two seasons. Trials were conducted in randomized complete block design with four replications. No symptoms fruits percentage (grade 0), fruits with less than 20% symptoms (grade 1) and symptoms over than 20% (grade 2) were evaluated at harvest. To evaluate the treatments behavior, analysis of variance, Duncan test and principal component analysis were applied. In order to achieve a satisfactory scab control, for the region and conditions studied, a single application of pyraclostrobin per season is not enough. With two applications of pyraclostrobin, in full and post bloom, one application of pyraclostrobin in pre bloom and dithianon in post bloom, or three applications of mancozeb in pre, full and post bloom, high control of citrus scab (90% of fruits without scab symptoms) was achieve for the varieties under study.
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References
Agostini, J. P.; P. M. Bushong; A. Bathia; L. W. Timmer: «Influence of Environmental Factors on Severity of Citrus Scab and Melanose», Plant Disease 87: 1102-1106, EE. UU., 2003.
Bernal, R. P.: «Occurrence of Citrus Scab Strains Resistant to Benzimidazoles in the Northern Part of Uruguay and the Evaluation of New Fungicides to Control This Disease», Proceeding of the International Society Citriculture, Orlando, Florida, EE. UU., 2000, pp 984-986,
Canteros, B. I.: Guía de identificación y el manejo de las enfermedades fúngicas y bacterianas en citrus, 1.a ed., Programa de Fortalecimiento de la Citricultura Correntina, Corrientes, Argentina, 2009.
Cuadras, C. M.: Nuevos métodos de análisis multivariante, CMC Editions, Barcelona, España, 2012.
Dewdney, M. M.; L. W. Timmer: Florida Citrus Pest Management Guide: Citrus Scab SP-43, University of Florida, IFAS, EDIS, Gainesville, EE. UU., 2012.
Di Rienzo, J. A.; F. Casanoves; M. G. Balzarini; L. Gonzalez; M Tablada, C. W. Robledo: InfoStat versión 2008. Grupo InfoStat, FCA, Universi- dad Nacional de Córdoba, Argentina, 2008.
Mondal, S. N.; Bhatia Alka; Shilts Turksen; L. W. Timmer: «Baseline Sensitivities of Fungal Pathogens of Fruit and Foliage of Citrus to Azoxystrobin, Pyraclostrobin, and Fenbuconazole», Plant Disease, St Paul, 89: 1186-1194, EE. UU., 2005.
Montangie, L. G.; R. Mika; S. Garrán; A. Robles: «Control químico de la sarna de los cítricos (Elsinoe spp) en naranja late (Citrus sinensis L. Osbeck) en la región de Concordia, Entre Ríos», V Congreso Argentino de Citricultura. Concordia, 30 de nov.-2 de dic., Entre Ríos, Argentina, 2005.
R evelopment Core Team. R: «A Language and Environment for Statistical Computing», R Foundation for Statistical Computing, Vienna, Austria, 2010, URL http://www.R-project.org.
Sozzi, G. O.: Árboles frutales, Editorial Facultad de Agronomía, Universidad de Buenos Aires, Argentina, 2007.
Thind, S. K.; Nirmaljit Kaur: «Progress of Citrus Scab (Elsinoe fawcetti) on Rough Lemon in Relation to Prevailing Meteorological Parameters», Journal of Research, Punjab Agricultural University 46 (1/2): 52- 54, Pakistán, 2009,
Timmer, L. W.; K. R. Chung: Florida Citrus Pest Management Guide: Citrus Scab SP-43, University of Florida, IFAS, EDIS, Gainesville, EE. UU., 2007.