AbstrakTujuan dari penelitian ini adalah untuk menggali informasi tentang kemampuan cendawan Beauveria bassiana dalam mengurangi intensitas serangan penggerek bonggol dan penggerek batang pisang. Penelitian ini dilakukan di Desa Lao Sambo, Kecamatan STM Hulu Kabupaten Deli Serdang, dengan ketinggian tempat 150 mdpl. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) non faktorial dengan 6 taraf perlakuan, 4 ulangan, perlakuan adalah aplikasi jenis B. bassiana dengan dosis rekomendasi. sebagai berikut : A0 = 0 konidia/ml, A1 = 10 2 konidia/ml, A2 = 10 4 konidia/ml, A3 = 10 6 konidia/ml, A4 = 10 8 A5 = sipermetrin 0,5cc/ml. Parameter yang diamati meliputi mortalitas C.sordidus dan O.longicollis dan efektifitas dosis B.bassiana. C.sordidus Germar dan O.longicollis Oliver yang terperangkap lebih didominasi oleh trap A0 (kontrol) 75 % sedangkan A1 (suspensi 10 2 /ml) 0 %, A2 (suspensi 10 4 /ml) 14,29 %, A3 (suspensi 10 6 /ml) 0 %, A4 (suspensi 10 8 /ml) 10,71 %, dan A5 (Sipermetrin 0,5cc/ml) 0 % imago. Sedangkan O.longicollis pada trap A0 (kontrol) 39,13 % sedangkan A1 (suspensi 10 2 /ml) 34,78 %, A2 (suspensi 10 4 /ml) 0 %, A3 (suspensi 10 6 /ml) 21,74%, A4 (suspensi 10 8 /ml) 4,35% ekor, dan A5(Sipermetrin 0,5 ml) 0 % imago. Penggunaan suspensi jamur B.bassiana sangat berpengaruh nyata terhadap C.sordidus Germar dan O.longicollis Oliver yang terperangkap pada trap. AbstractThe purpose of this study was to explore information about the ability of the fungus Beauveria bassiana in reducing the intensity of borer attack and banana stem borer. This research was conducted in Lao Sambo Village, District of STM Hulu Kabupaten Deli Serdang, with altitude of place 150 mdpl. This study used non factorial Randomized Block Design (RAK) with 6 treatment levels, 4 replicates, treatment was application of B. bassiana type with recommendation dose. as follows: A0 = 0 conidia / ml, A1 = 102 conidia / ml, A2 = 104 conidia / ml, A3 = 106 conidia / ml, A4 = 108 A5 = 0.5 cm sipermetrin / ml. Parameters observed included mortality of C.sordidus and O.longicollis and the effectiveness of the dosage of B.bassiana. C.sordidus Germar and O.longicollis The trapped oligate was dominated by a 75% the tail, and A5 (Sipermetrin 0.5 ml) 0% imago. The use of suspension of the fungus B.bassiana very significant effect on C.sordidus Germar and O.longicollis Oliver who trapped on the trap.
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