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UTILIZATION OF Paecilomyces lilacinus AS BIOCONTROL AGENT FOR SUPPRESSING ROOT ROT DISEASE CAUSED BY Rhizoctonia solani | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 14, Issue 3, 2009, Pages 0-0 | ||
| Authors | ||
| A. K. Waheed; H. M. Aboud; S. A. Alrikaby | ||
| Abstract | ||
| This study was conducted to determine the efficiency of six isolates of Paecilomyces lilacinus as biocontrol agent for Rhizoctonia solani. Culture of filtrate of the six isolates induced significant reduction in growth and dry weight of R. solani biomass.The isolates PL3 and PL4 wer e superior in reducing the radial growth of R. solani (2.26, 1.55 cm ) as compared to the control treatment (5 cm). Isolates PL3 and PL4 induced significant decrease in dry weight of R. solani biomass (0.07, 0.12 gm) respectively as compared to the control treatment (0.63 gm). Under plastic house conditions soil treatment with P. lilacinus significantly reduced infection of tomato plants .Isolate PL3 showed the highest ability in reducing the percentage of pre and post emergence infection (26.66%) as compared to the control treatment (86.66%). Under field conditions all tested isolates of P. lilacinus significantly reduced both disease incidence and severity of tomato infection by R. solani, isolate PL3 was the superior in reducing both disease incidence and severity (29.90%, 0.14) as compared to control treatment (83.16%, 0.59) respectively. | ||
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