KOMPATD3ILITAS KOMBINASI //aNPV DAN SBM SERTA PENGARUHNYA TERHADAP MORTALITAS DAN AKTIVITAS BIOLOGI PENGGEREK BUAH KAPAS Helicoverpa armigera HUBNER

I. Indrayani, D. Winarno, N. Subiyakto
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Abstract

Banyak cara dapat dilakukan untuk meningkatkan efektivitas HaNPV terhadap serangga hama sasaran. Efektivitas //aNPV terutama daya bunuhnya, dapat ditingkatkan dengan cara mengkombinasikan HaNPV dengan metode pengendalian hama lain yang pengaruhnya dapat menurunkan kckebalan tubuh serangga, misalnya insektisida nabati scrbuk biji mimba (SBM). Disamping untuk meningkatkan efektivitas, kombinasi yang sinergis antara HaNPV dan SBM juga bcrmanfaat untuk substitusi //aNPV yang produk komcrsialnya masih terbatas. Penelitian kompa- tibilitas kombinasi //aNPV dan SBM seta pengaruhnya terhadap mortalitas dan aktivitas biologi larva penggerek buah kapas H. armigera dilaksanakan di laboratoium Hama Balai Penelitian Tanaman Tembakau dan Serat Malang, mulai Maret hingga Juli 2002. Tujuannya adalah untuk mengetahui kompatibilitas dan kemanjuran kombinasi //aNPV dan SBM, seta mengetahui dampak interaksinya terhadap aktivitas biologi penggerek buah kapas //. armigera. Perlakuan yang digunakan adalah kombinasi //aNPV dan SBM berdasarkan konsentrasi subletal dan letal, yaitu: (I) Kontrol (tanpa perlakuan), (2) SBM(LC25), (3) SBM(LC,0), (4) //aNPV(LC25), (5) //aNPV(LC50), (6) /YaNPV(LC25) + SBM(LC2S), (7) /YaNPV(LC25) + SBM(LC50), (8) //aNPV(LC30) + SBM(LC2S), (9) //aNPV(LCjo) + SBM(LCjo). Setiap perlakuan disusun berdasarkan rancangan acak kelompok dengan empat kali ulangan. Hasil penelitian menunjukkan bahwa analisis intcraksi antara //aNPV dan SBM pada berbagai kombinasi konsentrasi umumnya menunjukkan sifat aditif dan sinergis. Kombinasi konsentrasi yang berinteraksi sinergis adalah //aNPV(LCso) t-SBM(LCso) yang menyebabkan mortalitas larva H. armigera ± 80%. Penurunan bobot larva maupun perpanjangan umur stadia larva tcinfeksi secara cfektif dipengaruhi oleh semua perlakuan //aNPV dan SBM, baik individu maupun kombinasi.Kata kunci: Aditif, //aNPV, H. armigera, kompatibilitas, mortalitas, serbuk biji mimba, SBM, sinergisABSTRACTCompatibility of HaNPV and SBM combinations and its effects on the mortality and biological activities of cotton bollworm Helicoverpa armigera HubnerMany ways to increase the effectiveness of //aNPV against insect pests. Combination of //aNPV and other control method, namely using neem seed powder (SBM) which reduced the insect immunity system, was one way to increase the effectiveness of//aNPV. Synergistic combination of SBM to //aNPV not only increased the effectiveness of insect control but SBM itself could also substitute //aNPV which was unavailable commercially. The study was caried out in the Entomology Laboratory of Indonesian Tobacco and Fiber Crops Research Institute (ITOFCRI) in Malang rom March to July 2002. The objective was to ind out the compatibility and efficacy of //aNPV+SBM combination against cotton bollworm and its impacts to larval motality and biological activities. The treatment tested were combinations of //aNPV+SBM based on both sublethal (LCjj) and lethal (LC50) concentrations, viz. (1) Control (untreated), (2) SBM(LC2!), (3) SBM(LCjo), (4) //aNPV(LC23), (5) //aNPV(LC50), (6) //aNPV(LC25) 4 SBM(LC25), (7) //aNPV(LC2J) + SBM(LCso),(8) //aNPV(LC3o) + SBM(LC2S), (9) //aNPV(LCj0) + SBM(LCjo). Each treatment was arranged in a randomized block design (RBD) with four replications Results showed that the combinations of HaNPV and SBM at different concentrations proved to be additive and synergistic interaction. The synergistic interaction was signiicant when //aNPV(LC,o) was combined with + SBM(LC50) with caused ± 80% of larval motality. Reducing in larval weight and prolong the larval age were effectively influenced by HaNPV and SBM either alone or combination.Key words: Additive, compatibility, HaNPV, //. armigera, motality neem seed powder, SBM, synergistic interaction
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相反,反pv和SBM结合的证据,以及它们对棉球的死亡率和生物活动的影响
可以做很多事情来提高汉普对目标害虫的有效性。其有效性//aNPV尤其具有杀伤力,可以通过将HaNPV与其他害虫控制方法结合起来来增加,后者的影响可能会降低宫内植物的kc汗液(SBM)。除了提高效率外,HaNPV和SBM之间的协同作用结合还限制了替换//aNPV的好处,而该替代//aNPV的产品仍然有限。二零零二年3月至7月,棉棉籽和棉籽幼虫的死亡和生物活动发生了变化。其目的是查明他//aNPV和SBM的兼容性和有效性,并确定他或她的行为对棉球生物活动的影响。棉铃虫。使用的治疗方法包括:(I)控制(不治疗),(2)SBM(LC25), (3) SBM(LC50),每一项治疗都是根据小组的随机设计安排的,有四次重复。研究结果表明,不同浓度组合的抽样分析通常表明添加剂和句法性质。协同互动的浓度是/ / aNPV组合LCso) t-SBM (LCso)导致的死亡率为H .棉铃虫幼虫±80%。幼虫失重或延长tcinbus幼虫的保质期,都受到个人和综合治疗的影响。关键字:添加剂,//aNPV, H. armigera,相容性,死亡率,除灭虫虫系统的种子粉是一种增加其效果//aNPV的方法。SBM的集中作用不仅增加了控制系统的作用,而且SBM本身也可以取代这一功能,这是不可能实现商业的。这项研究是在2002年3月的马朗罗姆的昆虫实验室研究的。目标是了解棉花的寄生虫和它对larval的动机和生物活动的影响。治疗测试是基于我们两个subcjj和SBM(LCjj), viz(2)专注(LC2),(2) SBM(LC2),每一种元素都被包裹在一个随机的设计块中,有四种不同的特性表明,HaNPV和SBM的结合是不同的中心,证明是相互作用和互动性的。《synergistic interaction是signiicant当/ aNPV (LC, o是组合+和SBM (LC50)和年轻的±80% larval motality。拉瓦尔重量和推进的拉瓦尔时代的放缓要么是HaNPV和SBM带来的影响,要么是单独的,要么是重复的。关键字:适应,兼容性,HaNPV, //。armigera,种子粉,SBM,共生关系
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