ISSN 2167-0447
International Journal of Agricultural Sciences ISSN: 2167-0447 Vol. 5 (5), pp. 849-853, July, 2015. © International Scholars Journals
Full Length Research Paper
The effectiveness of wood vinegar in controlling Rhizoctonia solani and Sclerotinia sclerotiorum in green house-cucumber
Mahin Saberi1, Abolfazl Sarpeleh2, Hassan Askary*2 and Flora Rafiei1
1Agriculture college, Islamic Azad University, Ashtian branch, Ashtian, Iran
2Iranian Research Institute of Plant Protection, Tehran, Iran.
*Corresponding author. E-mail:[email protected]
Accepted 24 October, 2013
Abstract
Wood waste recycling in addition to reducing environmental hazards can replace chemical pesticides for organic farming purposes. In this study, the inhibitory effects of non-volatile and volatile components of wood vinegar were evaluated on the mycelial growth of Rhizoctonia solani and Sclerotinia sclerotiorum as well as on the control of root and crown rot disease of green house-cucumber (Cucumis sativus L.) induced by R. solani. To study the effects of wood vinegar, fresh mycelial disks of R. solani and S. sclerotiorum were placed on Petri dishes containing artificial media and different concentrations of wood vinegar (0.75, 0.5, 0.37, 0.25, 0.125, 0.05, 0.025 and 0%). Both volatile and non-volatile components of wood vinegar inhibited significantly the mycelial growth of both pathogens (α =0.05). Three concentrations of wood vinegar (0.125%, 0.25% and 0.50%) inhibited significantly the mycelial growth of R. solani were used to control the associated disease in cucumber plants inoculated with this pathogen. Diseases severity was significantly reduced in all concentrations (α= 0.05) compared to untreated control plants. Wood vinegar reduced the pathogenicity rate of the pathogen up to 87% compared with the untreated control.
Key words: Pathogen, soil-borne, fungistatic, natural products, growth stimulator, pyroligneous acid.