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EVALUATION THE EFFICIENCY OF SOME BIOCONTROL AND CHEMICAL AGENTS IN CONTROL SOUR ORANGE ROOT –ROT DISEASE CAUSED BY Fusarium solani UNDER GREENHOUSE AND FIELD CONDITIONS | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 14, Issue 3, 2009, Pages 0-0 | ||
| Authors | ||
| W. M. Kuthair; K. S. Juber | ||
| Abstract | ||
| The study included control sour orange root-rot disease caused by Fusarium solani by using some biocontrol and chemical agents compounds. Results of several treatments to control the fungus Fusarium solani under greenhouse conditions showed the efficiency of the biofungicide Biocont, the bacteria Bacillus subtilis and the Beltanol fungicide individually in decrease disease severity to 0% and revealed significant increase in the mean shoots and roots length and dry weight, Acibenzolar-S-Methyl treatment gave significant reduction in disease severity to 25%, compared to 75% in the control treatment (pathogenic fungus only). Results of the field experiment showed that Biocont and B. subtilis alone or in combination with foliar spraying with ASM solution gave significant reduction in disease severity to 25% as compared with 87.5% in the control treatment, in addition to that significant increase were recorded in sour orange seedlings growth parameters (plants height, branches number and the shoots and roots dry weight) in all tested control agents. The Beltanol fungicide showed significant decrease in disease severity similar to that caused by Biofungicide Biocont and the bacteria B. subtilis, and revealed significant increase in plant height, branch, numbers and shoot and root dry weight which were reached 52.3cm, 3.75branch, 11.24gm and 4.53gm respectively compared with the control. The treatment of ASM showed reduction in disease severity when used in the presence of the pathogenic fungus to 50% compared to 87.5% in the control treatment | ||
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