<p>Tembakau merupakan bahan baku utama industri hasil tembakau seperti rokok keretek, cerutu, tembakau iris, dan lain-lain. Sebelum digunakan, daun tembakau harus melalui proses pengolahan. Pengolahan tembakau pada dasarnya merupakan kegiatan pengeringan, dengan penerapan suhu bertahap atau disebut proses kiu-ring (curing). Dalam proses pengolahan tembakau diperlukan energi, yang selama ini berasal dari panas ma-tahari, udara panas buatan hasil pembakaran kayu, minyak tanah, batu bara, LPG (liquefied petroleum gas), atau limbah pertanian. Penggunaan bahan bakar ini menyebabkan polusi udara, sehingga mencemari ling-kungan dan meracuni pekerja. Tembakau sendiri mengandung bahan berbahaya seperti, debu tembakau, ni-kotin, residu pestisida, TSNA (tobacco spesific nitrosamine), B-a-P (benzo-a-pyrene), dan lain-lain. Petunjuk pengendalian bahan berbahaya dan dampak lingkungan tersebut, selama ini sudah tersedia secara lengkap yang ditetapkan oleh organisasi tembakau dunia Coresta dan diimplementasikan oleh perusahaan-perusaha-an mitra petani. Petani yang sistem produksinya dalam bentuk kemitraan dengan perusahaan-perusahaan tembakau, telah melakukan pengendalian dengan baik. Dampak negatif penggunaan bahan bakar dapat di-tekan dengan sistem pemanasan tidak langsung (flue-curing), sedangkan penggunaan batu bara dilakukan dengan tungku pembakaran gasifikasi. Implementasi selanjutnya, selain diperlukan sistem inspeksi sesuai ketentuan juga perlu didorong terbentuknya kemitraan antara perusahaan tembakau dan petani.</p><p> </p><p>Tobacco leaf is the main raw material of tobacco industries such as cigarette, cigar, slices tobacco, etc. Be-fore being used, tobacco leaves have to go through processing. Tobacco processing is basically a drying acti-vity, with the application of temperature or a gradual process called curing. In the processing of tobacco ener-gy needed, which is derived from the hot sun, hot air made by the burning wood, kerosene, coal, LPG (li-quefied petroleum gas), or agricultural waste. The use of these fuels causes air pollution, thus contaminating the environment and poisoning workers. Tobacco itself contain hazardous materials such as tobacco dust, ni-cotine, pesticide residue, TSNA (tobacco specific nitrosamines), B-a-P (benzo-a-pyrene) and others. In-structions on control of hazardous materials and environmental impact, as long as it is available completely de-termined by the organization of the world tobacco Coresta and implemented by partner company of farmers. Farmer production systems in the form of partnership with tobacco companies, has done well control. The ne-gative impact of fuel use could be reduced by an indirect heating system (flue-curing), while the use of coal gasification is done by burning stove. Subsequent implementation, in addition to the required inspection sys-tem according to the provisions, should also be encouraged such as partnerships between tobacco companies and farmers.</p>
<p><strong>The use of diesel-oil and solar energy as an alternative energyfor Virginia tobacco curing</strong></p><p>The use of diesel oil and solar energy in the curing on Virginia tobacco was studied in two steps, i.e., the laboratory experiment al Ihe Research Institute for Tobacco and fiber Crop Malang and ield experiment (economic scale) in East Lombok, NIB. The study was conducted from July to September 1998. The laboratory experiment was aimed at evaluating the effect of diesel oil on (he aroma of cured leaves. Results showed that there was no Strange aroma of Ihe cured-leaves, as the effect of diesel-oil burning Ihe experiment using economic scale curing-bani indicated that the diesel-oil consumption was 0 76 l/kg krosok and if flat-plate solar collector was constructed as a roof, consumption decreased 7.84% which was equal with 0.06 l/kg krosok or 2.574 kJ/kg krosok. Economic analyses showed that using diesel-oil and flat-plate solar collector as a energy source gave a proit chance and an ability to pay the 18%/year of the capital interest, with B/C ratio -1.74, NPV=Rp 45 340 131, and IRR-52 93%. If only diesel-oil was used, it gave a lower proit with B/C ratio=l.77, NPV=Rp 46 425 215. and IRR=53.19%. The increase in the diesel-oil price up to Rp I 500/1 would give a profit chance and an ability lo pay the capital interest, with the B/C ratio = 1.487 and 1 .490. with IRR = 52.67% dan 52 99%, for curing the tobacco leaves with diesel-oil and solar collector, and with diesel-oil only, respectively.</p>
<p>ABSTRAK</p><p>Untuk memperoleh varietas yang sesuai di Indonesia telahdilakukan pengujian tiga varietas tembakau oriental, yaitu Zichna, XanthiYaka dan Izmir di Desa Rejuno, Dero (Kabupaten Ngawi) danMargomulyo (Kabupaten Bojonegoro). Tipe tanah ketiga desa tersebutberturut-turut adalah lempung, liat, dan lempung berdebu. Pengujiandilakukan pada tiga periode tanam tahun 2007 dan 2008. Hasil penelitianmenunjukkan bahwa tipe tanah berpengaruh terhadap hasil dan indekstanaman, yang terbaik adalah tanah lempung seperti di Desa Rejuno.Berdasarkan hasil, indeks tanaman dan penilaian organoleptik, varietasyang terbaik adalah Zichna, hasilnya rata-rata 2,213 t/ha dan indekstanaman 91,66. Varietas tersebut menghasilkan sensasi iritasi dan impakrendah dan aroma sangat baik. Pada urutan berikutnya adalah varietasXanthi Yaka, hasilnya 1,742 t/ha, indeks tanaman 78,27. Berdasarkan hasilpenelitian tersebut maka kedua varietas tembakau oriental tersebut jugasesuai untuk rokok kretek di Indonesia. Keduanya sesuai ditanam pada tipetanah lempung atau tanah yang banyak mengandung kapur dan pasir.</p><p>Kata kunci: Nicotiana tabacum L., tembakau oriental, varietas, Indonesia</p><p>ABSTRACT</p><p>Productivity and quality tests of three oriental tobacco varieties in Indonesia</p><p>Three oriental tobacco varieties were tested in villages of Rejuno,Dero (Ngawi regency), and Margomulyo (Bojonegoro regency) to find outsuitable variety to grow in Indonesia. Soil types of the three villages wereloam, clay, and silt loam, respectively. The tests were carried out for threeplanting series in 2007 and 2008. Research result showed that soil typesaffected several agronomic characters as well as yield and crop indices.The most suitable soil was silt loam as in Rejuno village. According toyield, crop index, and organoleptic evaluation, Zichna variety was the bestwith yield potential and crop index of 2.213 t/ha and 91.66.Organoleptically, the variety was low irritation and sensation impact andvery good in aroma. The second best variety was Xanthi Yaka with yieldpotential and crop index of 1.742 t/ha and 78.27. This research revealedthat Zichna and Xanthi Yaka varieties were suitable as raw material forclove cigarette. In addition, these two varieties were also well suited to begrown in Indonesia, especially on loamy and sandy soils with large amountof lime.</p><p>Key words : Nicotiana tabacum L., oriental tobacco, variety, Indonesia</p>
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