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Journal of Plant Protection and Pathology
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Shoukry, M., Al Gazar, T., EL-Sheshtawi, M. (2021). Ability of Some Antagonistic Fungi for Controlling Cucumber Downy Mildew Disease Caused by Pseudoperonospora cubensis. Journal of Plant Protection and Pathology, 12(1), 67-69. doi: 10.21608/jppp.2021.57331.1009
Mina Ramzy Shoukry; T. Al Gazar; M. EL-Sheshtawi. "Ability of Some Antagonistic Fungi for Controlling Cucumber Downy Mildew Disease Caused by Pseudoperonospora cubensis". Journal of Plant Protection and Pathology, 12, 1, 2021, 67-69. doi: 10.21608/jppp.2021.57331.1009
Shoukry, M., Al Gazar, T., EL-Sheshtawi, M. (2021). 'Ability of Some Antagonistic Fungi for Controlling Cucumber Downy Mildew Disease Caused by Pseudoperonospora cubensis', Journal of Plant Protection and Pathology, 12(1), pp. 67-69. doi: 10.21608/jppp.2021.57331.1009
Shoukry, M., Al Gazar, T., EL-Sheshtawi, M. Ability of Some Antagonistic Fungi for Controlling Cucumber Downy Mildew Disease Caused by Pseudoperonospora cubensis. Journal of Plant Protection and Pathology, 2021; 12(1): 67-69. doi: 10.21608/jppp.2021.57331.1009

Ability of Some Antagonistic Fungi for Controlling Cucumber Downy Mildew Disease Caused by Pseudoperonospora cubensis

Article 12, Volume 12, Issue 1, January 2021, Page 67-69  XML PDF (640.15 K)
Document Type: Original Article
DOI: 10.21608/jppp.2021.57331.1009
Authors
Mina Ramzy Shoukry email 1; T. Al Gazar2; M. EL-Sheshtawi3
1Plant pathogeny Dept. Faculty of Agriculture .Mansoura University Egypt
2Vegetables and Ornamentals Dept. Faculty of Agriculture, Mansoura University, Egypt
3Plant Pathology Dept. Faculty of Agriculture, Mansoura University, Egypt.
Abstract
The aim of this study is to find an effective alternative method for controlling cucumber downy mildew disease caused by Pseudoperonospora cubensis by using eco-frind by fungi such as Trichoderma viride and Trichoderma harzianum instead of chemical fungicide like copper acrobat under greenhouse conditions. Sprayed method of  antagonistic fungi spore suspension was used on plants at a rate of 1 x 107 colony forming unit (cfu). By applying it before any symptoms of infection appear (in a protective method), and ten days after the appearance of symptoms of infection (in a curative method). The results of the obtained experiment here showed that T. harzianum was superior during different growth periods up to 90 days, as it gave 44.30% disease incidence and 19.26% disease severity compared to both control (100% disease incidence as well disease severity) and the chemical fungicide (66.67% disease incidence and 25.93% disease severity). The results of  a curative trial also showed T. harzianum was given during different growth periods up to 90 days, where 40% disease incidence and 31% disease severity compared to control (100% disease incidence and disease severity 74.44%) and chemical fungicide (20% disease incidence and 29.49% disease severity). While T. viride achieved moderate results as compared to control (60% disease incidence and 27.22% disease severity).From the results obtained, it is evident that T. harzianum  gave better results than T. viride, and therefore we recommend using it in resisting downy mildew  in cucumber.
Keywords
Downy mildew; Pseudoperonospora cubensis; Trichoderma harzianum; Trichoderma viride; biological control; greenhouses
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