کنترل بیماری پوسیدگی فوزاریومی ریشه لوبیا بوسیله‌ی قارچ‌کش های زیستی

Fusarium root rot caused by Fusarium solani f.sp phaseoli is one of the most important fungal diseases of beans in different countries and Iran. Investigations carried out in Markazi province, especially in Khomeyn region, show that this disease, as the dominant cause of bean root rot in the province, causes significant damage to bean cultivation. The importance of bean cultivation in the Markazi province, the ineffectiveness of chemical control against this disease, and the adverse environmental effects of toxins have necessitated the need for research for the biological control of this disease in the province. To investigate the control role of some commercial biological agents available in the country on fusarium root rot disease of beans, biological fungicides include; Mycoroot (Glomus spp.), Trichoran-P (Trichoderma harzianum), Trico (T. harzianum), Alkagreen (T. harzianum), Probio 96 (Bacillus subtilis), Pars Bacil (Bacillus velezensis strain M11-RTS), Potabarvar-2 (Pseudomonas koreensis and Ps. vancouverensis). Also, for comparison, treatments of infected control, negative control (uninfected) and chemical fungicide carbendazim-iprodione (Rovral–TS) were examined. The examined traits included; plant fresh weight, plant height, root fresh weight and disease index. The results of analysis of variance showed that the treatments had a significant differences in all investigated traits (p < 0.05). The effect of biological factors on Fusarium root rot disease of beans showed that Pars bacillus had the greatest effect in reducing the disease and increasing root fresh weight (p<0.05) and Rovral–TS and Pars Bacillus had the greatest effect in reducing fusarium root rot disease of bean without significant difference.