Biological Control of Cowpea Seeds Rot and Damping- off Disease Caused by Rhizoctonia solani
journal of kerbala university,
2013, Volume 9, Issue 2, Pages 105-110
AbstractThe results of this study showed that the bacteria Bacillus subtilis has high ability against fungus Rhizoctonia solani on (PSA) medium which the rate of inhibition was for mycelium 64.7% after five days of incubation. The results showed that all methods of added various bacteria have had a significant increase in the percentage of cowpeas seed germination existence pathogenic fungus as led seed treatment the bacteria significant increase in the percentage of germination of 85% and was the qualified while achieved soil treatment the bacteria week ago of Agriculture and treatment of the soil before planting directly germination rate of 72.5% and 60% respectively. compared to the pathogenic fungus treatment only and that the percentage of germination was 37.5%.
The results also showed that all the treatments used have achieved a significant reduction in the rate and severity of infection compared to the treatment of pathogenic fungus alone and that the rate and severity of infection of 100% and 70% respectively. As achieved seed treatment bacteria reduction significantly in proportion and severity was 30% and 14.12% respectively has excelled this treatment to treat the soil before a week of agriculture and the treatment of soil before planting directly and that the percentage of infection to 40% and 58% and the severity of infection 17.5% and 30 %, respectively.
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