Efficiency evaluation Some of  biocontrol agents and chemical compound to control Fusarium wilt disease caused by Fusarium oxysporum f.sp.lycopersici on tomato under field condition

	Efficiency evaluation Some of biocontrol agents and chemical compound to control Fusarium wilt disease caused by Fusarium oxysporum f.sp.lycopersici on tomato under field condition
journal of kerbala university
Article 1, Volume 10, Issue 0, 2014, Pages 62-68 PDF (0 K)
Abstract
The study aimed to evaluate the efficiency of some agents to control the pathogen under field conditions, and the yield of tomato plant . Results under field condition , where all the control agents caused a reduction in disease incidence and severity after 60 days . all control agents Nb5, Nb9, EM1 and Sb29 individually with the treatments of pathogenic fungus achieved reduction in disease incidence and severity compared with control treatment wich was inoculated with the pathogenic fungus only . the disease incidence and severity in the treatments of the two bacteria isolates ranged 20.00- 10.25 % and 23.33-12.00 % respectively compared with control treatment which reached 85% and 54.67% respectively. While The two treatments the Bioproduct EM1 and sea weed extract Sb29 showed significant reduction in disease incidence and severity compared with control treatment wich reached in their treatment 16.66, 9.33 %, and 20.00 , 8.67% respectively. The interaction between the two bacteria isolates Nb5 and Nb9 showed superiority in disease control . the percentage of disease incidence and severity 6.66 and 4.16 % respectively .The integration between treatments led to completely control the disease . led to increase in plant height , fresh and dry weights , and the yield of tomato plant , compared with fungus treatment individually (control) . the yield weight was found to be 6.52 kg/ plant in the tow bacterial isolates with EM1 and Sb29 extract compared to 0.983 kg/ plant in control , followed by the combination of the two isolates with Sb29 wich attained to 6.46 kg/plant , then P.putida alone , 5.82 kg/plant,

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