Evalution of Trichodirma viride and magnatic field against Pythium aphanidermatum and Rhizoctonia solani on cucumber seedling

	Evalution of Trichodirma viride and magnatic field against Pythium aphanidermatum and Rhizoctonia solani on cucumber seedling
journal of kerbala university
Article 1, Volume 7, Issue 3, 2011, Pages 975-983 PDF (0 K)
Abstract
This study was carried out to determine the efficiency of Trichoderma viride and seeds magnetization against Pythium aphanidermatum and Rhizoctonia solani causative agents of seedling damping off on cucumber (Al-Mokhtar var.) in both of cultural medium(PDA) and in pots. Results showed that T. viride induce high reduction in seedling damping off disease caused by the two fungi. The percentage of healthy plants in T. viride treated soil and inoculated with P. aphanidermatum were 90.5% and 83.3% after 7 and 30 days respectively compared with 95.2% in control seedlings. The healthy plants in the soil treated with T.viride and inoculated with R. solani were 81.0% and 66.7% compared with 56.7% and 38.3% in inoculated soil by R.solani only after 7 and 30 days respectively.Seed magnetization at 250 G induced promotions in all of growth parameters. Germination percentage and seedling viability were 94.0% and 2280 compared to 86.0% and 1605 in control seedlings respectively. The percentage of healthy seedling in inoculated soil with P. aphanidermatum and R. solani , grown from magnetized seeds were 85.7% and 76.2% after 7 and 30 days with significant differences compared to inoculated treatments with the two pathogens. These results indicated that T.viride was more efficient than magnetization against the two pathogenic fungi, while magnetization seeds improved seedling growth parameters. The treatment of soil with T.viride and passed the seeds through magnetic field may constitute an important factor in management of seedling damping off disease program.

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