KAJIAN PENGGUNAAN INSEKTISIDA NABATI TERHADAP ULAT JENGKAL (Hyposidra talaca) PADA TANAMAN TEH DI KABUPATEN BANDUNG
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Date
2014-07-23
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Balai Besar Pengkajian dan Pengembangan Teknologi Pertanian
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Effect of Bio Insecticides to Caterpillar (Hyposidra talaca) at Tea Plant in Bandung Regency.The caterpillar (Hyposidra talaca) is one of limitation factor concerning productivity in tea plantation, this isthe plant pest of caterpillar attack the plant, including pest will attack tea shoots, young and old leaves. The pestattack begins from seedling through maturity, and commonly occur in productive plants and this happen in anew trim plants with a serious invasion the plants wills die. The assessment of the application of bio pesticidefor controlling the caterpillar was conducted at farmer area in Cikalong village, Cikalongwetan subdistrict on2006. The above assessment used synthetic pesticide, with 3 treatment bio pesticide, with one synthetic pesticideand 3 replication. Parameter being observed were caterpillar larva population, pest intensity attack and farmercost analysis with the above different treatment. The study is aimed at to knows effectiveness bio-insecticide,shoot productivity of tea, and farming analysis. The result of this assessment showed that, the nimba treatment,extract the soursop seed, toona, insecticide able to decrease the intensity invasion up to the seventh observationi.e. 0.00%, 1.50%, 0.00%, 0.00% and 0.00%. Optimum yields were achieved from insecticide treatment of 5,460kg/ha/70 days, followed by toona 5,250 kg/ha/70 days, w, soursop 4,207 kg/ha/70 days, nimba 3,423 kg/ha/70days, while the control point was only 1,463 kg/ha/70 days. Toona treatment i.e. Rp.4,380,387 with the B/C2,37. Bio pesticide suren was the best and give high income. The recommendation of this assessment, that usedbioinsecticide suren leaf extract dose 10 ml/l with interval 10 day on tea was effective and give high income.Key words : Bio insecticide, tea, catterpillarUlat jengkal (Hyposidra talaca) merupakan faktor pembatas dalam budidaya teh, hama ini dapat menyerangpucuk, daun muda dan daun tua. Serangannya sejak tanaman dalam persemaian hingga tanaman tua, umumnyapada tanaman yang produktif, dan bila menyerang tanaman yang baru dipangkas pada serangan berat tanamanakan mengalami kematian. Pengkajian dilakukan di lahan petani Desa Cikalong, Kecamatan Cikalongwetan padatahun 2006, dengan menggunakan metode demonstrasi plot dengan 3 perlakuan insektisida nabati, 1 pestisidasintetik dan 1 kontrol dengan 3 ulangan. Parameter yang diamati meliputi populasi ulat jengkal, intensitas seranganhama, dan analisis usahatani. Tujuan pengkajian untuk mengetahui efektifitas insektisida nabati terhadap intensitasserangan ulat jengkal, produksi pucuk teh segar dan analisa usahatani masing-masing perlakuan. Hasil pengkajianmenunjukkan bahwa perlakuan nimba, ekstrak biji sirsak, suren, insektisida dapat menurunkan intensitas seranganmasing-masing 0,00%, 1,50%, 0,00% dan 0,00. Produksi tertinggi diperoleh dari perlakuan Insektisida yaitu5.460 kg/ha/70 hari, diikuti oleh suren 5.250 kg/ha/70 hari, sirsak 4.207 kg/ha/70 hari, nimba 3.423 kg/ha/70 hari,sedangkan kontrol hanya 1.463 kg/ha/70 hari. Perlakuan suren menunjukkan pendapatan tertinggi Rp.4.380.387,-. dengan B/C 2,37. Insektisida nabati suren merupakan insektisida terbaik dalam mengendalikan ulat jengkal(H.talaca). Rekomendasi dari pengkajian ini yaitu penggunaan insektisida nabati yang berasal dari ekstrak daunsuren dosis 10 ml/l dengan interval 10 hari untuk tanaman teh memberikan hasil dan pendapatan yang terbaik.Kata kunci : Insektisida nabati, teh, ulat jengkal