Evaluation of the Effectiveness of Biologically Synthesized Copper and Zinc Nanoparticles in Controlling Powdery Mildew on Rose Hybrida Caused by the Fungus Podosphaera Pannosa

Year 2025, Volume: 10 Issue: 2, 552 - 562, 01.09.2025

Istabraq Adnan , Mena Waleed

https://doi.org/10.28978/nesciences.1759477

Abstract

The use of biologically synthesized nanomaterials in controlling pathogens is considered one of the promising and environmentally safe methods. Therefore, this study intended to evaluate the effectiveness of regular and nanoparticle zinc and copper oxides, both biosynthesized by green synthesis using curcumin, in controlling the fungus Podosphaera pannosa, which causes powdery mildew on Rosa hybrida. Furthermore, studying the effect of these materials on growth parameters, calculating the control effectiveness, infection severity, and area under disease progress curve (ADPC) under greenhouse conditions. The findings demonstrated that using a concentration of 300 mg/L of biologically produced copper oxide nanoparticles (Cn) was more effective than the other concentrations at lowering the severity of the disease, which reached 12.23%, and the AUDPC, which reached 72.73%, and it was superior in control effectiveness of 81.71%. The utilization of zinc oxide nanoparticles produced biologically at a 300 mg/L concentration showed superiority in reducing the infection severity, which reached 17.76%, and the AUDPC reached 74.45%, and gave an increase in the control effectiveness, which reached 80.91% compared to the treatment of the control plant, 15.51% and the pathogenic fungus, 0.00.

Keywords

Powdery mildew , Podosphaera pannosa , Curcumin , Biologically synthesized copper oxide nanoparticles Cn

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