Volume 8, Issue 1 (spring 2004)                   jwss 2004, 8(1): 213-222 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

F. Padasht Dehkaei, SH. Mansouri Jajaei H. Rouhani. Effects of Paddy Soil Antagonistic Microorganisms of Guilan on the Causal Agent of Rice Bakanae Disease. jwss 2004; 8 (1) :213-222
URL: http://jstnar.iut.ac.ir/article-1-417-en.html
Abstract:   (20864 Views)
One hundred and two microorganisms were isolated from 85 paddy soil samples of different locations in Guilan Province. Antagonistic effects of the microorganisms were tested against Gibberella fujikuroi on PDA medium. Twenty one microorganism isolates were selected for seed treatment in blotter test. Seven isolates that were satisfactorily effective in reducing pathogen colonies formed on seeds and seedlings were tested in controlling disease in a greenhouse experiment with split plot design. The antagonists were Bacillus subtilis, B. circulans, Bacillus sp., Trichoderma harzianum, T. virens (2 isolates), and F.23 (unidentified). Results showed that all antagonists effectively reduced the disease in sterilized soil compared with control but overall effectiveness of B. subtilis, T. harzianum, and T. virens was higher than others and lower than the fungicide treatment (thiophant methyl thiram W.P. 80% , 2g/L). It was found that when seeds were treated with antagonists prior to inoculation with the pathogen, the effectiveness of antagonists was significantly better than when they were applied after seed infection with the pathogen.
Full-Text [PDF 185 kb]   (3057 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2008/01/9 | Published: 2004/04/15

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2023 CC BY-NC 4.0 | JWSS - Isfahan University of Technology

Designed & Developed by : Yektaweb