Study the lethal doses of suitable isolate of Beauveria bassiana for microbial control of Ephestia kuehniella on Sayer Date cultivar

Subject Areas : Plant Protection

Negar Bahmani ¹ , Hadi Ostovan ² , Masoud Latifian ³ , Bahar Rad ⁴

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Received: 2011-05-11 Accepted : 2012-02-10 Published : 2012-03-20

Keywords:

Abstract :

The Ephestia kuehniella is one of the important pest of storage Date. This research was conducted to evaluating the efficiency the suitable Iranian isolate of Fungus Beauveria bassiana for the microbial control the flour moth on the Sayer date cultivar. The larvae were treated by 5 doses of fungi including 104,5×104,105, 5×105 and 106spores/ml to determine the lethal power, with dropping method. Data were calculated by using Log-Probit analysis methods. Results showed  that the highest and lowest LC50 were for pupa and egg equivalent to 1.76×104 and 3.49×103 spores/ml respectively. The lowest and highest LT50were assessed for pupa and egg equivalent to 3.67 and 3.38 days respectively. The research results of in the laboratory phase as the first step of feasibility of fungus application in microbial control showed that fungal pathogen had high potential for application on control of flour moth in date

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