Efficacy of copper oxychloride brands in the control of cucumber downy mildew

Document Type : Research Paper

Authors

1 Plant Protection Research Department, Yazd Agricultural and Natural Resources Research and Education Center, AREEO, Yazd, Iran.

2 Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.

3 Plant Protection Research Department, South Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Jiroft, Iran.

Abstract

Abstract
Downy mildew is one of the most important diseases of cucumber. The use of multi-site fungicides in disease control programs is recommended to ensure adequate crop protection and to delay the potential resistance of high-risk groups of single-site fungicides. The efficacy of 15 different copper oxychloride (WP 35%) brands of Iranian formulators with a concentration of 2 g/L, in control of cucumber downy mildew were assayed. Other treatments were two registered fungicides flopicolide + propamocarb hydrochloride SC 68.75% (Infinito) 2 ml/L and cyazofamid SC 400 (Ranman®) 0.5 ml/L with control treatment. Trials were performed in Tehran (Varamin) and Mazandaran (Amol) provinces with 16 treatments and southern Kerman province (Jiroft) with 17 treatments in a randomized complete block design with four replications. The experiments were carried out in greenhouse production systems (Varamin and Jiroft) and open field (Amol). Foliar spray began with the appearance of first symptoms of the disease and was repeated at intervals of 5 to 7 days. In Jiroft, Tehran and Mazandaran experiments, 2, 3 and 4 sprays were performed with experimental treatments, respectively. Experimental plots were evaluated at the stage of disease severity with a grade of 9 in the scoring index in control plots. Analysis of variance showed significant differences in all experiments between treatments and control. Comparison of the mean of the experiments showed that the brands of copper oxychloride had not the same effect and were divided into several statistical groups. Their efficiency was 65.9-72% in greenhouse conditions and 29-43% in open field conditions.

Keywords

References

References
 
Agrios GN, 2005. Plant Pathology. 5th edition, Academic Press. 922 pp.
Azimi H, 2014. Effect of chlorothalonil and famoxadone + cymoxanil in control of early blight disease of tomato under field conditions. Journal of Applied Research in Plant Protection 3(1): 35–48 (in Persian with English abstract).
Cohen Y, Van den Langenberg KM, Wehner TC, Ojiambo PS, Hausbeck M, Quesada-Ocampo LM, et al., 2015. Resurgence of Pseudoperonospora cubensis: The causal agent of cucurbit downy mildew. Phytopathology 105(7): 998–1012.
Colucci S, 2008. Host range, fungicide resistance and management of Pseudoperonospora cubensis, causal agent of cucurbit downy mildew. MSc thesis, Plant Pathology, North Carolina State University, USA.
Colucci SJ, Holmes GJ, 2010. Downy mildew of cucurbits. The Plant Health Instructor. APSnet, Minnesota, USA. 11 pp.
Chaudhry SU, Iqbal J, Mustafa A, 2009. Efficacy of different fungicides for the control of downy mildew of cucumber. Journal of Animal and Plant Sciences 19(4): 202–204.
Dehghani A, Ranjbar A, Bagheri S, Shahriari D. 2010. Determination of Fungicides E Effect in Control of Cucumber Downy Mildew in Under Covering Crop and Greenhouse. Agricultural Scientific Information and Documentation Center (ASIDC), 38387, 35 pp. (in Persian with English abstract).
Etebarian HR, 2006. Vegetable Diseases and their Control, Tehran University Press, Iran, 554 pp.
Fani SR, Azimi H, Beiki F, 2019. Efficacy of various commercial brands of Bordeaux mixture in the control of downy mildew of greenhouse cucumber, Pseudoperonospora cubensis. Pesticides in Plant Protection Sciences 7(2): 107–117 (in Persian with English abstract).
Fani SR, Azimi H, Beiki F, 2020. Efficacy of Cyazofamid and Pyraclostrobin + Dimethomorph fungicides in the control of cucumber downy mildew.  Journal of Applied Research in Plant Protection 9(2): 97–89 (in Persian with English abstract).
Fani SR, Moradi M, Shahriari D, Esmailzadeh Hosseini SA, Dashtekian K, et al., 2014. Efficacy of cyazofamid (SC 400) fungicide in the control of downy mildew of greenhouse cucumber. Pesticides in Plan Protection Sciences 1(2): 28–39 (in Persian with English abstract).
Fani SR, Moradi M, Shahriari D, Esmailzadeh Hosseini SA, Sarpeleh A, 2015. Efficiency of Fosphite fungicide for cucumber downy mildew control in greenhouse. Pesticides in Plan Protection Sciences 2(2): 83–91 (in Persian with English abstract).
Fani SR, Sarpeleh A, Najafinia M, Shahriari D, 2018. Efficacy of Cyazofamid (SC 10%) fungicide in the control of downy mildew of greenhouse cucumber. Pesticides in Plant Protection Sciences 7(1): 43–54 (in Persian with English abstract).
Fishel FM, Dewdney MM, 2012. Fungicide Resistance Action Committee’s (FRAC) classification scheme of fungicides according to mode of action. Pesticide Information Office, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida.7 pp. http://edis.ifas.ufl.edu. [Accessed on 6 January 2021].
Gupta SK, Jarial K, 2014. Efficacy of some fungicides against downy mildew of cucumber. International Journal of Farm Sciences 4(1):72–75.
Lebeda A, Cohen Y, 2011. Cucurbit downy mildew (Pseudoperonospora cubensis) biology, ecology, epidemiology, host-pathogen interaction and control. European journal of plant pathology 129(2):157–192.
Lindenthal M, Steiner U, Dehne HW, Oerke EC, 2005. Effect of downy mildew development on transpiration of cucumber leaves visualized by digital infrared thermography. Phytopathology 95(3): 233–240.
McGrath MT, 2006. Update on Managing Downy Mildew in Cucurbits. Vegetable MD Online, Long Island Horticultural Research and Extension Center. Available from: http://vegetablemdonline.ppath.cornell.edu/NewsArticles/Cuc_Downy.htm#Top [Accessed 13th December 2018].
Palti J, Cohen Y, 1980. Downy mildew of cucurbits (Pseudoperonospora cubensis): the fungus and its hosts, distribution, epidemiology and control. Phytoparasitica 8: 109–147.
Pouzeshimiyab B, Fani SR, 2017. Evaluation of some current fungicides against downy mildew on greenhouse cucumber (Pseudoperonospora cubensis Rostovzev.). Research in Plant Pathology 4(2): 1–12 (in Persian with English abstract).
Pouzeshimiyab B, Fani SR, 2020. Epidemiology and aerobiology of Pseudoperonospora cubensis in northwest Iran. Italian Journal of Agrometeorology (2): 109–116.
Savory EA, Granke LL, Quesada-Ocampo LM, Varbanova M, Hausbeck MK, et al., 2011. The cucurbit downy mildew pathogen Pseudoperonospora cubensis. Molecular Plant Pathology 12(3): 217–226.
Shahriari D, Nasr-Esfahani M. and Dahghani A., 2013.  Study of Infinito, Revus and Ridomil gold plus fungicides effects in control of cucumber downy mildew in greenhouse and undercovering. Agricultural Scientific Information and Documentation Center (ASIDC), 43578, 19pp. (In Persian with English abstract).
Sheikhi A, Najafi H, Abbasi S, Saberfar F, Rashid M, et al., 2017. Guideline of Chemical and Organic Pesticides of Iran, Vol.1 and 2, Rahdan Press, Iran. 695 pp (in Persian).
Thomas C, Indaba T, Cohen Y, 1987. Physiological and specialization in Pseudoperonospora cubensis. Phytopathology 77: 1621–1624.
Journal of Applied Research in Plant Protection
Volume 10, Issue 4
December 2021
Pages 81-89

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History

  • Receive Date: 04 September 2021
  • Accept Date: 04 September 2021

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