A Perspective on Common Scab (Streptomyces scabiei) Disease Management Strategies in Potato Crop

Abdul Rehman, Jahanzaib Sandhu, Muhammad W. Alam, Saira Mehboob

Abstract


Potato common scab (CS), caused by Streptomyces scabiei, and is a major potato disease that causes deep pitted lesions on the surface of the tuber. The market value and quality of tubers with CS are reduced, resulting in significant economic losses to potato growers. Traditional control strategies such as irrigation and reduced soil pH help to reduce CS but are not efficient methods. Celest® 100 FS (Fludioxanil), Emesto® 24% FS (Penflufen) and Bio magic® (Bacillus subtilis) were tested on CS in this study. A disc diffusion method was used to evaluate the efficacy of these products under in vitro conditions at three different concentrations: 100 ppm, 200 ppm, and 300 ppm. After 7 days, results showed that Bio Magic was the most effective at reducing the growth of Streptomyces scabiei, followed by Emesto 24 FS and Celest 100 FS at 300 ppm. The maximum inhibition percentage by Bio Magic was 45.05%, followed by Celest 100FS at 38.38% and Emesto 24FS at 31.47%. In greenhouse experiments, Celest 100FS treated potato tubers produced the highest yield of 2250g per pot (10" x 10" inch), followed by Bio Magic at 2000g, Emesto 24FS at 1850g, and the non-treated control at 1300g.The data indicated that Celest 100FS provided the best control of CS in greenhouse trials.

Keywords


Bacillus subtilis; Bio-agents; Potato common scab; Streptomyces scabiei

References


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DOI: 10.33687/phytopath.010.03.3795

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