Efektivitas Vectobac 12 as (Bt H-14) Dan Bacillus Thuringiensis H-14 Terhadap Vektor Malaria an. Maculatus Di Kobakan Desa Hargotirto, Kecamatan Kokap, Kabupaten Kulon Progo

A study using Vectobac 12 AS ( Bt H-14) and Bacillus thuringiensis H-14 local strain was conducted at laboratory Vector and Reservoir Control Research Unit and breeding ponds of Anopheles maculatus in Kokap regency and Kulon Progo district. The objectives of this study are : (1). to detect the efficacy of B. thuringiensis H-14 local strain toward An. maculatus larvae at the laboratory. (2). to measure the effectiveness of B. thuringiensis H-14 local strain dosages 1 x LC95. 5 x LC95 and 10 x LC95 toward An. maculatus at the field. The efficacy test of B. thuringiensis H-14 local strain toward An. maculatus based on to the method proposed by WHO in order to determine the LC50 and LC90 which is computed using the probit analysis at the laboratory. The methods used R thuringiensis H-14 local strain dosages of 2.145 ppm (1 x LC95), 10.724 ppm (5 x LC95) and 21.448 ppm (10 x LC95) respectively were applied 8 ponds with the width of ponds ranging from 0.08 to 0.45 m2, 0.29 to 0.64 m2 and from 0.08-0.79 m2.The results showed, the dosages after 24 hours were 10.22 ppm (LC50), 27.11 ppm (LC90) and 35.75 ppm (LC95). After 48 hours the dosages were needed 7.74 ppm (LC50), 17.06 ppm (LC90) and 21.34 ppm (LC95), The effectiveness o/R thuringiensis H-14 local strain dosages of 2.145ppm (1 x LC95) toward An. maculatus larvae until 50 % survive the same time (7.35 days) as B. thuringiensis H-14 (8.14 days) dosages of 10.724 ppm (5 x LC95). B. thuringiensis H-14 local strain dosages of 21.448 ppm (10 x LC95) toward An. maculatus larvae until 50 % survive longer time (16.21 days) than B. thuringiensis H-14 local strain 1 x LC95 and 5 x LC95 The B. thuringiensis H-14 local strain is effective for controlling mosquitoes larva