Repositori BKPKEFEKTIVITAS BERBAGAI KONSENTRASI FORMULASI CAIR Bacillus thuringiensis H-14 GALUR LOKAL DALAM MEDIA INFUS KEDELAI TERHADAP JENTIK Anopheles maculatus DI KECAMATAN KOKAP KABUPATEN KULON PROGO DIYBlondineCh,PauthorWidiartiWidiartiauthorBacillus thuringiensis H-14 (local strain) is a pathogenic bacteria which specificlly target to mosquito larvae. It is safe for human, mammals and does not cause any environmental pollution. The aims of this study were to measure 1). the efficacy of liquid formula of B.thuringiensis H-14 local strain at several concentration in soybean infusion medium against An. maculatus, 2). the determine optimum concentration of the liquid formula of Bacillus thuringiensis H-14 local strain in soybean infusion medium against An. maculatus larvae in Kokap District Kulon Progo Regency DIY. This research was based on the quasi experiment with the Pre test-Post test Control Group Design. We tested 3 liquid formula of B. thuringiensis H-14 local strain with concentration of 1 x LC90 5 x LC90 and 10 x LC90 in 9 ponds each formula and one control sample. Other 9 ponds were selected as a control group of An. maculatus with 0.20 to 1.20 m2 width. The effectiveness of the liquid formula of B.thuringiensis H-14 local strain in soybean infusion medium concentration of 0.059 ml/l (1 x LC90), 0.295 ml/l (5 x LC90 and 0.59 ml/l (10 x LC90) against An. maculatus larvae which reached 70 % were survived for 6.75 days, 8.35 days and 12.58 days. There was a significant difference between the effectiveness of the liquid formula of B. thuringiensis H-14 local strain in soybean infusion medium concentration of 0.059 ml/l (1 x LC90) and 0.295 ml/l (5 x LC90 and 0.59 ml/l (10 x LC90) at p<0.05. The liquid formula of B.thuringiensis H-14 local strain in soybean infusion medium could be used as the vector control agent.QW 1-300 Microbiology2008Badan Penelitian dan Pengembangan KesehatanArticle

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