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COMPATABILITY BETWEEN BIOCONTROL AGENTS AND FUNGICIDES TO CONTROL pythium aphanidermatum ON CUCUMBER SEEDLINGS | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 38, Issue 1, 2007, Pages 28-35 | ||
| Authors | ||
| Alaa K. Hasan; Saleh H. Samir | ||
| Abstract | ||
| This experiment was conducted to evaluate the effectiveness of biocontrol agents and fungicides individually or in an integration as induced systemic resistance agents against the damping - off of cucumber seedlings incited by Pythium aphanidermatum. Under greenhouse condition, integration between Ridomil 2.5G or Beltanol with biocontrol agents Pseudomonas fluorescens and Trichoderma harzianum significantly reduced damping off and disease severity to 0 , 3.3% ; 3.3% , 6.6% ; 0 ,13.3% ; 10% and 10% respectively . Over that, these treatments caused significant increase in dry weight of shoots and roots. Results of field experiment were in agreement with greenhouse results. Integration between Ridomil 2.5G and P. fluorescens reduced percentage of damping off and disease severity to 0 and 2%, respectively as compared to control treatment in which damping off and disease severity were 57.7% and 75%, respectively. The results also revealed that integration between fungicides and biocontrol agents resulted in an increase in dry weight of shoots and roots. | ||
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