Document Details

Document Type : Article In Journal 
Document Title :
Control of root- rot of green bean with composted rice straw fortified with Trichoderma harzianum
Control of root- rot of green bean with composted rice straw fortified with Trichoderma harzianum
 
Subject : Control of root- rot of green bean with composted rice straw fortified with Trichoderma harzianum 
Document Language : English 
Abstract : Rhizoctonia solani Kuhn causes damping –off and root-rot diseases of a wide range hosts including green beans. R. solani was the most aggressive and most frequently encountered pathogen isolated from roots of root- rotted green beans follwed by Fusarium solani. This research evaluated the suppressive effects of rice astraw compost fortified with T. harzianum on damping- off of green beans and plant growth. The microbial composition of the compost-amended soil was also determined. The in-vitro studies indicated that members of T. harzianum or T. viride were the antagonistic fungus against R. solani. Fungi isolated from soil amended with compost 4 weeks before sowing were more antagonistic to R. solani than those isolated from soil applied before this time. The inhibitory activities of the compost-inhabiting microbes might partly be responsible for the efficacy of compost in reducing of green bean. In pot experiment, the population density of bacteria in soil infested with R. solani and amended with compost fortified with T. harzianum were higher than in infested soil alone or with compost. On the other hand, fortified compost with T. harzianum applied to the infested soil greatly reduced the total fungal count reaching their smallest population after 4 weeks from treatment. Application of rice straw compost fortified with T. harzianum to soil infested with R. solani reduced the disease severity to the maximum values and also promoted plant height, fresh and dry weights. Generally, composts might be used deliver or fortify bio-control agents as, they may invigorate their proliferation, increase their efficacy against soil borne pathogens and improve soil fertility 
ISSN : 1319-0989 
Journal Name : Arts and Humanities Journal 
Volume : 3 
Issue Number : 1 
Publishing Year : 1429 AH
2008 AD 
Article Type : Article 
Added Date : Saturday, April 17, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
لبنى نوارnawar, lubna ResearcherDoctorate 

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