Peroxyacetic Acid (PAA): an eco-friendly Agent for Reducing Sclerotinia sclerotiorum Growth, Sclerotia Carpogenic Germination and Infectivity | ||||
| Egyptian Journal of Phytopathology | ||||
| Article 5, Volume 45, Issue 2, December 2017, Page 67-78 PDF (319.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejp.2017.88582 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ranya El-Ashmony* ; Marzouk Abdel-Latif; El-Sayed Abdou; Anwar Galal | ||||
| Plant Pathology Department, Faculty of Agriculture, Minia University, Egypt | ||||
| Abstract | ||||
| An eco-friendly agent, hydrogen peroxide (H2O2)-based compound, peroxyacetic acid (PAA) gave efficiency against Sclerotinia sclerotiorum growth and infectivity. Significant inhibitory effect for PAA against linear growth (LG), sclerotial formation (SF) and mycelial dry weight (MDW) by 0.4 g/l acetic acid +0.8 g/l H2O2 was recorded. Inhibitory effects were increased by enhancing H2O2 concentration (0.4 g/l AA +1.2 g/l H2O2) that caused 85, 91 and 83% inhibition for LG, SF and MDW, respectively. In addition, carpogenic germination measures of S. sclerotiorum sclerotia were significantly reduced upon PAA treatments. Carpogenic germination was reduced from 100% to 62% and 50% by 38% and 50% inhibition when S. sclerotiorum sclerotia were treated by 0.4 g/l AA + 0.8 g/l H2O2 and 0.4 g/l AA+ 1.2 g/l H2O2, respectively. Reduction of carpogenic germination by H2O2 based compound was accompanied with significant lowering in number of stipes and apothecia/ sclerotium. Drenching sclerotinia-infested soil with PAA, seven days pre-planting provided significant reduction in root and crown rot diseases of bean plants. When soil was singly drenched by 0.4 g/l acetic acid +0.8 g/l H2O2 or 0.4 g/l acetic acid+1.2 g/l H2O2 protected bean plants against root and crown rot by 47 and 67%, respectively. A substantial protection was pronounced against white rot of bean pods. Posttreatment by PAA was more effective to reduce white rot than pre-one. | ||||
| Keywords | ||||
| Peroxy acetic acid; H2O2-based compound; Eco-friendly agent and Sclerotinia sclerotiorum | ||||
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