Efficacy of Beltanol (SL 37.5%) on damping-off disease of cucumber

Fani, Seyed Reza; Azimi, Hossein; Probst, Claudia

doi:10.48311/jcp.2022.1606

Efficacy of Beltanol (SL 37.5%) on damping-off disease of cucumber

https://doi.org/10.48311/jcp.2022.1606

Volume 11, Issue 3
September 2022

Pages 425-431

Document Type : Original Research

Authors

S. R. Fani ¹

H. Azimi ²

C. Probst ³

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 University of Applied Sciences, School of Engineering, Department of Agricultural Technology and Management, Wels, Austria.

Abstract

Damping-off disease caused by Phytophthora melonis is the most common disease of cucumber seedlings Cucumis sativus L.. To study the efficacy of 8-hydroxy quinoline sulfate (Beltanol^®) in control of cucumber damping-off disease, glasshouse experiments were carried out with six treatments at research stations in Tehran, Alborz, and Semnan provinces in Iran. Treatments included 0.3, 0.4, and 0.5 ml∙l^-1 of Beltanol as the experimental fungicide, metalaxyl+mancozeb (Rosalaxyl^® WP 72%; FRAC code 3 + M03) at 2 g∙l^-1 as the standard fungicide along with inoculated and untreated and non-inoculated (healthy) controls. Cucumbers were cultivated from seed in trays, and treatments were applied twice. Once after seed sowing and second time at the 2-leaf stage. Disease incidence was recorded at the 4-leaf stage. Beltanol at 0.3 ml∙l^-1 had the least effect among fungicides, with nearly 50% of treated plants showing signs of disease. Application of Beltanol at 0.4 and 0.5 ml∙l^-1 decreased disease incidence by 59.55 and 64.47% compared to the inoculated control, respectively. Rosalaxyl^® performed better than Beltanol and reduced disease by 83.55%. However, to provide alternatives for proper fungicide rotations, Beltanol at the rate of 0.4 ml∙l^-1 may manage damping-off disease in cucumber.

Keywords

cucurbits

Mancozeb

Metalaxyl

Phytophthora

8-hydroxy quinoline

20.1001.1.22519041.2022.11.3.4.9

Subjects

Chemical Control of Plant Diseases

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