PJB-2020-52
Efficiency of some of bio-formulas against fungi caused Sunflower root rot disease
Fatima Hadi Kareem
Abstract
The aim of this study was to Isolation and identification of Sunflower root rot causes in Babylon province fields and Evaluation the efficiency of some biological and chemical products in their control under Laboratory conditions. The results of the field survey showed the presence of Sunflower root rot disease in all the surveyed areas with disease incidence of 20-55%. Results of isolation and identification and microscopic characteristics showed the presence of some species of fungi associated with Sunflower infected plants, Macrophomina phaseolina was presented in all samples with a rate of 100% followed by Fusarium solani and Rhizoctonia solani. The test of Pathogencity for isolates showed that these fungi R. solani, F. solani, M. phaseolina were pathogenic and responsible to Sunflower root rot disease. The results appeared that Effective microorganisms (EM1) formula was very effective and had high antagonistic activity against pathogenic fungi which decrease growth of the most aggressive and speediest isolate R. solani with inhibitory ratio 81.11%. Also inhibited growth of Fusarium and Macrophomina to 87.96 and 80.92% respectively. Also, the results was showed that Bio-Immune, Black tea and Cinnamon and Liquorice extract caused significant decrease in fungal growth in the medium. This appeared the highest antagonism against pathogens. The study ensured for the first time the activity of Effective Microorganism formula and Bio-Immune against fungi causes Sunflower root rot in the world.
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