COMPARISON OF MOSQUITO LARVICIDAL EFFICACY BETWEEN MICROBIAL ENCAPSULATED BTI (EBTI) AND STANDARD BTI (SBTI)

›› 1992, Vol. 10 ›› Issue (3): 211-214.

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COMPARISON OF MOSQUITO LARVICIDAL EFFICACY BETWEEN MICROBIAL ENCAPSULATED BTI (EBTI) AND STANDARD BTI (SBTI)

  

  • Received:2017-01-07 Revised:2017-01-07 Online:1992-08-31 Published:2017-01-09

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Abstract: A comparative study was conducted on the efficacy of mosquito larvicides EBTI and SETI.The results showed that: 1.The residual efficacy of EBTI was remarkably higher than that of SBTI at 0.007-0.002ppm BTI concentration (P0.01),the mosquito larvae mortality of EBTI remained 100% until the 4th week; in contrast,the mosquito larva mortality of SBTI gradually and obviously declined from the 2nd to 4th week after treatment (x2=8.17-24.08),and reached 0 at the 4th week.2.The lowest BTI concentration of EBTI at which a high efficacy persisted for 4 weeks was 0,007ppm BTI,the mosquito larva mortality remaining 100%.