Ifrayeem Butt, Arshad Javaid, Muhammad A.U. Hassan, Iqra H. Khan, Shahbaz Ahmed


Sclerotium rolfsii Sacc. is a soil-borne necrotrophic plant pathogen that causes diseases in over 500 plant species including vegetables, fruits and ornamental plants. An in vitro study was undertaken to assess the potential of thiophenate methyl 70% WP, metalaxyl+mencozeb 72% WP and fosetyl-Al 80% WP to control this pathogen. Five concentrations (50, 100, 150, 200 and 250 ppm) of each fungicide were prepared by mixing the appropriate quantities of each product in autoclaved malt extract agar. For comparison, a control treatment (0 ppm) without fungicides was also included. Metalaxyl+mencozeb was found the best fungicide with 29–84% control of fungal growth in different concentration. The other two fungicides viz. thiophenate methyl and fosetyl-Al were less effective and controlled the fungal pathogen by 10–35% and 30–48% over control, respectively. Regression analysis showed a linear or a polynomial relationship between the concentration and the fungal growth with R2 = 0.9631, 0.9797 and 0.9106 for thiophenate methyl, metalaxyl+mencozeb and fosetyl-Al, respectively. This study concludes that metalaxyl+mencozeb is a highly effective fungicide for the control of S. rolfsii.


Fungicides, In vitro control, Metalaxyl+mencozeb, Sclerotium rolfsii

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DOI: https://doi.org/10.33866/phytopathol.033.02.0714


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Pakistan Journal of Phytopathology
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