Jurnal Penelitian Tanaman Industri最新文献

{"title":"KERAGAAN PERBENIHAN JAHE DI JAWA BARAT","authors":"MAHARANl Hasanah, Sukarman, Supriadi, M. Januwati, R. Balfas","doi":"10.21082/LITTRI.V10N3.2004.118-125","DOIUrl":"https://doi.org/10.21082/LITTRI.V10N3.2004.118-125","url":null,"abstract":"Untuk memperbaiki sistem perbenihan jahe telah dilakukan penelitian terhadap pctani maju di Jawa Barat yang secara tradisional mcnsuplai kebutuhan benih jahe untuk petani disekitarnya atau petani di daerah lain. Penelitian dilakukan dengan metode survei di dua kabupaten, yaitu Majalengka (Kecamatan Banjaran dan Lemah Sugih) dan Kabupaten Sukabumi (Kecamatan Parakan Salak, Jampang Tengah, Tegallega, dan Waning Kiara). Wawancara dilakukan secara langsung dengan petani maju meliputi kondisi lahan, cara budidaya, panen, dan penanganan benih. Contoh rimpang diambil secara acak dai hasil panen petani kemudian dianalisis kualitasnya meliputi: penampilan fisik, berat rimpang, kadar air, serat, dan pati, serta jenis OPT. Hasil penelitian menunjukkan bahwa tidak ada petani yang secara khusus menanam jahe untuk benih. Lahan pertanaman jahe bcrada pada kisaran kelinggian tempat (dpi) 400-800 m. Sumber benih berasal dari hasil panen tahun sebelumnya Cara penanganan benih ada yang dihampar di atas rak bambu atau di gelar di atas tanah di bawah kolong rumah. Sebelum ditanam, benih diperlakukan tcrlebih dahulu dengan fungisida atau bakterisida. Petani menanam jahe dengan sistem polikultur dengan tanaman lain seperti kacang tanah, jagung, pisang, bawang merah, dan bawang daun. Cara tanam ada yang menggunakan bedengan (umumnya di Majalengka), sedangkan di Sukabumi umumnya tidak menggunakan bedengan, jarak tanam bervariasi antara 20 x 30 cm di dalam baris dan 30-80 cm antar baris. Panen dilakukan setelah tanaman berumur 8-10 bulan Hasil analisis kandungan pati cukup tinggi 42.4 - 56.35%, serat 5.67 - 7.40%, dan kadar air 8.37- 9.80%. Jenis OPT yang paling banyak ditemukan pada contoh benih jahe Aspidiella hartii. Mimegralla, dan Meloidogyne spp., sedangkan Ralstonia solanacearum tidak ditemukan. Hasil penelitian menunjukkan bahwa untuk membentuk suatu sistem produksi benih jahe yang standar maka unsur yang sangat menentukan adalah umur panen harus cukup tua (9-10 bulan), bebas dari OPT, dan penanaman bisa secara polikultur dengan tanaman bukan inang.Kata kunci: Jahe, Zingiber officinale, perbenihan, benih, OPT, hama, penyakit ABSTRACT Performance of indigenous ginger seed systems in West JavaTo improve the system of ginger seed production, a study was conducted on developed ginger farmers in West Java who traditionally supplied ginger seeds to the farmers in the surrounding area or in other area. The research was conducted by survey method in two districts, Majalengka (Banjaran and Lemah Sugih sub districts) and Sukabumi (Parakan Salak, Jampang Tengah, Tegalega and Warung Kiara). Direct dialogue to farmer was used to discuss about land condition, cultivation method, harversting and seed management. The rhizome/seed sample was taken by random from the farmers, then it was analyzed for quality, such physical quality, weight of rhizome, moisture content, fiber, carbohydrate and kinds of pest and deseases. The result of the research showed that there were no farmers wh","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91211488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"KARAKTER MORFOLOGI DAN FISIOLOGI TAPAK DARA (Vinca rosea L.) PADA BEBERAPA CEKAMAN AIR","authors":"S. Sukarman, I. Darwati, D. Rusmin","doi":"10.21082/LITTRI.V6N2.2000.50-54","DOIUrl":"https://doi.org/10.21082/LITTRI.V6N2.2000.50-54","url":null,"abstract":"Morphological and physiological characteristics of Vinca at di fferent water stress levelsVinca (Vinca rosea L.) is one of the important medicinal crops as the sources of raw materials for traditional medicines. Its alkaloid is believed can reduce the risk of cancer, blood tension and diabetes diseases. Recently, vinca is only grown as ornamental plant in the garden, therefore, its cultivation methods is limited, especially its water stress tolerance, lite purpose of this experiment was to study the effect of water stess on the morphological and physiological characteristics of vinca. A pot experiment was conducted in the plastics house of the Research Institute for Spice and Medicinal Crops from November 1997 to March 1998. Factorial experiment consisted two factors and three replications was arranged in a randomized block design. Ihe irst factor consisted of two vinca varieties, those wee white flowers (WFV) and red flowers of vinca (RFV). While 4 different levels of water stress i.e., (I) 100% ield capacity (FC), (2) 80% FC, (3) 60% FC, and (4) 40% FC were used as the second factor. Parameters used for evaluating the effect of teatment consisted of morphological characteristics such as (I) plant height, (2) number of primary branches, (3) number of leaves, (4) leaf area (5) dry weight of stem, (6) dry weight of leaf, (7) dry weight of flowers and (8) dry weight of roots, and physiological characteristics observed including: (I) percentages of opened stomata and (2) free proline content of leaf. Results showed that interaction between varieties and water stress did not significantly affect the morphological nor physiological characteristics. Varieties significantly affected the morphological characteristics (except plant height), however they did not signiicantly affect physiological characteristics. Water stress significantly affected the morphological (except dry weight of roots) and free proline contents. Under 80% FC, vinca produced the highest growth and dry weight of plant however, the plant growth and dry weight wee inhibited under 60 and 40% FC. Under 40% FC, percentages of opened stomata deceased signiicantly. Moeover, proline content in the leaves signiicantly increased by water stess treatments.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79307539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DOSIS SUBLETAL S/NPV DAN PENGARUHNYA TERHADAP TRANSMISI VERTIKAL PADA LARVA Spodoptera litura F.","authors":"I. Indrayani, T. Hadiastono, G. Mudjiono","doi":"10.21082/LITTRI.V9N2.2003.55-62","DOIUrl":"https://doi.org/10.21082/LITTRI.V9N2.2003.55-62","url":null,"abstract":"Ketcrganlungan pada insektisida kimia dalam pengendalian serangga hama kapas merupakan salah satu alasan pemanfaatan patogen serangga, khususnya S/NPV untuk mengendalikan larva S. litura. Mcskipun secara tcknis agen pengendalian ini cukup potensial mengendalikan hama sasaran, tetapi pemanfaatannya secara luas masih menghadapi banyak kendala, salah satunya adalah tcrbalasnya produk komersial yang menyebabkan aplikasi kurang optimal. Fcnomena transmisi vetikal S/NPV pada generasi hama bcikutnya cukup berpotensi mengendalikan inangnya secara langsung. Penelitian ini dilakukan di l-aboratorium Hama Balai Penelitian Tanaman Tembakau dan Serat Malang, mulai April hingga Agustus 2002. Tujuannya adalah untuk memperoleh informasi mengenai pengaruh dosis subletal S/NPV pada perkembangan larva S. lilura dan potensinya dalam mentransmisikan infeksi S/NPV pada generasi bcrikutnya (FI). Penelitian disusun secara faktorial dengan rancangan acak kelompok (RAK) yang terdiri atas dua faktor. Faktor petama adalah instar larva S. litura terdiri atas dua taraf, yailu: (1) instar ketiga, dan (2) instar kelima. Faktor kedua adalah dosis subletal S/NPV terdiri atas liga laraf, yaitu 5000. 50 000: dan 500 000 PlB'larva. Sebagai pembanding perlakuan digunakan kontrol (tanpa perlakuan S/NPV), dan setiap perlakuan diulang empat kali. Hasil penelitian menunjukkan bahwa pengaruh dosis subletal S/NPV pada larva S. litura instar ketiga dan kelima, selain menyebabkan motalitas larva, juga mengurangi bobot pupa dan jumlah lelur Larva instar ketiga lebih peka icrhadap infeksi S/NPV yang menyebabkan pupanya mcmiliki bobol (erendah, yaitu 211.5 mg pada laraf dosis 50 000 PIB/larva. Rendahnya bobol pupa berkorelasi positif dengan menurunnya jumlah telur imago, yaitu hanya mencapai 30% (502 butir) dari jumlah telur pada kontrol Peningkatan laraf dosis subletal meningkatkan persentase telur ter¬ kontaminasi polihedra, yaitu tertinggi 24% pada taraf dosis 500 000 PIB/larva, dan juga menurunkan daya tetas telur. Sterilisasi berpotensi menghambat transmisi vetikal S/NPV pada generasi berikutnya (FI), sehingga menurunkan persentase motalitas larva neonate FI. Tanpa sterilisasi pada lelur, motalitas larva neonate IT mencapai t 20%, tetapi dengan sterilisasi menyebabkan motalilas larva rendah yaitu t 5%.Kata kunci : Dosis subletal, entomopatogen S/NPV, transmisi vertikal, S. litura, instar, mortalitas, pupa, neonate, cpizootik. kapas ABSTRACTSublelhal dose of SINPV and its effects on vertical transmission on larvae of Spodoptera lituraOne reason of the use of cnlomopathogen is to reduce chemical inscctisides application on cotton pest insect control S/NPV is one of ihe effective entomopathogen to control S. litura larvae. Technically, this biological agent is effective to control the insect pest, however it is not used widely because of its limited commercial product. Solving this problem is needed such as searching for another information about killing potential of S/NPV to the next generat","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82194850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BIOLOGI Ooencyrtus malayensis Ferr. PARASITOID TELUR Dasynus piperis China, PADA INANG ALTERNATIF Nezara viridula L.","authors":"Asnimar Alwi, Deciyanto Soetopo","doi":"10.21082/LITTRI.V6N3.2000.61-65","DOIUrl":"https://doi.org/10.21082/LITTRI.V6N3.2000.61-65","url":null,"abstract":"Biology of egg parasitoid ('Ooencyrtus malayensis Ferr.) ofpepper bug on alternate egg host (Nezara viridula L)Pepper bug (Dasynus piperis China) is an important pest of pepper. The pest widely spread in most pepper plantations of Indonesia. The level of the pest attack varied depended on crop cultivation treatment. Ooencyrtus malayensis is one of natural enemies which is able to control the population of pepper bug in plantation. The objective of this research was to study some aspects of the egg parasitoid biology by using eggs of Nezara viridula as the alternate host. This research was designed in a completely randomized block with four replicates. Dasynus piperis was collected from Bangka island and reared in Laboratory of the Research Institute for Spice and Medicinal Crops (RISMC ). Nezara viridula was fed with cowpea bean. This reascarch was conducted from July 1998 to February 1999. Experiment was divided into seven steps such as oviposition. pre adult period, production of parasitoid per host egg. egg preference, infestation period effect of cold storage (4°C) and parasitoid population. Research results showed that there were 85.5 parasitoid produced during its life time. Pre adult period lasted from 12 to 16 days, alternate host produced 3 parasitoids. The parasitoid pefeed the host of 0-2 days old. The eggs could be stored for 25 days in a efrigenerator (4°C). The longer the infestation and the larger number of parsitoid infested the larger numbers of parasitoid produced.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"31 37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90155333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENELITIAN PERUBAHAN WARNA DAN ETILEN SELAMA PEMERAMAN DAUN TEMBAKAU KULTIVAR MADURA SERTA PENGARUHNYA TERHADAP MUTU TEMBAKAU RAJANGAN","authors":"J. Purdiyanto","doi":"10.21082/LITTRI.V7N3.2001.93-97","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N3.2001.93-97","url":null,"abstract":"Colour alternation and et/tylene changes during ripening tobacco leaves cultivar Madura and its effect to the quality of slice Madura tobaccoThe colour change and elhylene production in the leaves of Madura tobacco (Nicotiana tabacum) during ripening was studied at \"Labora¬ torium Biokimia Pusat Antar Universitas Pangan dan Gizi Universitas Gadjahmada Yogyakata\" and \"Laboratorium Inti dan Atom Jurusan I'isika, FMIPA Universitas Gadjahmada Yogyakata\". The change of colour was measured with Chrommameter CR-200. while the production of ethylcne, ACC (1-aminocyclopropanc-l-carboxylic acid) and MACC (malonyl-ACC) were measured with Photoaccuslic Spectroscopy, from the sample of 100 kg tobacco leaves cv. Jepon grown from April to September 1995 in Plakpak, Pcgantenan, Pamekasan, East Java. The experiment was designed as a completely randomized design in three replicates. The leaves samples were taken randomly from the mature middle leaves Results showed that endogenous ethylcne production al the irst day al a level of 169 ppb. was able to initiate ripening. Conversion percentage of ACC to ethylcne for 8 days ripening increased from 7.7 up lo 61.4 %. F tests least signiicantly different (1%). showed that yellow intensity signiicantly increased on the second day. This indicated thai ripening process was stated on the second day. On the other hand green intensity significantly decreased at the ifth day, thus no chlorophyl degradation. Brightness was signiicantly observed on Ihe third day of ripening, meaning that ripening stated on the third day. Based on the three criteria, the best ripening period was from the third lo the ilth day. This implies that the farmers will have three day periods of ripening which can be arranged to overcome the shotage of man power for slicing the leaves.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82925570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH PENYIMPANAN TERHADAP SIFAT KIMIA DAN VIABILITAS BENIH AREN","authors":"N. Mashud, David Allorerung","doi":"10.21082/LITTRI.V7N4.2001.108-112","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N4.2001.108-112","url":null,"abstract":"Effect of storage duration on physical and chemical characteristics and viability of seed in sugar palm Arenga pinnataEffect of storage on (he physical and chemical characteristics and viability of sugar palm seed was studied in (he Research Institute for Coconut and Other Palm, Manado from April 1997 lo March 1998. The seeds were collecled from (he palm of 15 year old from Kemelcmbuai village, Motoling sub district, Minahasa North Sulawesi. The seeds were sown in the glass house. The carbohydrate, lipid and protein were analyzed at the laboratory of Research Institute for Coconut and Other Palm, Manado. The experimcnl was designed as a randomized block arranged factorial ly. The irst factor was storage duration (0,2, 4, 6, 8, or 10 weeks). Results showed that unshclling affected germination rate but did not germinability. The seed stored for 2 - 4 weeks showed high gcrminability (71%). Unshclling and storing reduced carbohydrate and lipid, but not protein. Carbohydrate reduction occurred at two weeks storage, either in (he shelled or unshellcd seed. Reduclion of carbohydrate more rapidly in (he shelled seed stored for 2-4 weeks. Storage for 2 weeks resulted in the reduction of protein. From this study it was suggested that for high germination, Ihe seed should be stored for 4 weeks before sowing.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80063684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"POLA PERTUMBUHAN DAN SERAPAN HARA Echinacea purpurea","authors":"M. Rahardjo, Sudiarto Sudiarto, Rosita Smd, S. Sukarman","doi":"10.21082/LITTRI.V7N3.2001.74-83","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N3.2001.74-83","url":null,"abstract":"Growth pattern and nutrient uptake of Echinacea purpureaEchinacea purpurea or purple cone flower, belongs lo Aslcraceac family which grown naturally in Noth America. The plant known as is Ihe number one Immune herbs in the world, since it has a greal potential lor improving and developing leukocyte cell activity. Recently, Echinacea has been evalualcd/tcsled as adjuvant in cancer therapy, AIDS and chronic exhaustion. Echinacea purpurea is more potential for immunity improvement lhan those of other herbal medicine. Therefore, the study on its growlh rale, growth pattern, and nutrient uptake in a new tropical environmental condition is very important in order lo suppot its cultivation technology, lo identify the growth pattern, growlh rale, nutrient uptake, and simplisia quality. A ield trial had been conducted in Cipanas at 1 100 m above sea level (asl) in 1999-2000. Plot size was 4x3 m, and plant spacing was 50 x 40 cm. Ten samples was taken from each growth stage of the plants. The growth stages were (I) vegetative I (VI) at I month alter planting (map), (2) vegetative 2 (V2) al 1 .5 map, (3) generative I (Gl) at 2 0 map, (4) generative 2 (G2) at 2.5 map. (5) generative 3 (G3) at 3.0 map. and (6) generative 4 (G4) al 3.5 map. The results of the research showed thai growth rate, nutrient uptake of N, P. K. Mg. and S linearly increased in line with Ihe increase of plan! ages The highest dry weight accumulation was found on aerial part of plant (slem I leal), and the lowest was occurred on root pat. The amount of dry weight accumulation was 75.72 g/plnul. and nutrient uptake oIN, P. K.Ca, Mg, and S. respective!) was 1529.1. 1 40.01. 1943.25, 654.59. 358.66. and 88.57 mg/plant.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82293600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PENGARUH JARAK TANAM TERHADAP JUMLAH MATA TUNAS PADA BEBERAPA KLON KAPUK","authors":"M. Sahid, Buadi Buadi, O. M. Fachrudin","doi":"10.21082/LITTRI.V6N1.2000.14-17","DOIUrl":"https://doi.org/10.21082/LITTRI.V6N1.2000.14-17","url":null,"abstract":"Effect of plant spacing on the number of buds of capok clonesThe experiment was conducted at Muktiharjo Experimental Farm. Pati from December 1991 to December 1993. The experiment was arranged factorially in a split plot design with three replications. The main plot was plant spacing, i.e. 2 m x I m and 2 m x 2 m, while the sub plot was clones (source of buds), namely MH I. Mil II. logo B, (lanang 36 x Siam) x Congo, (Congo 2 x Lanang). (SS 29 x Congo), (Jepara x Congo 2), and (P. Gudang x Lanang) x Congo. Plot size was 20 m x 4 m The size of planting hole was 0 6 m x 0 6 m x 0.6 m. one plant per hole. Canle manure mixed with soil was applied at planting lime Results showed that capok with plant spacing of 2 m x I m produced higher number of active buds per ha ( 147 625 buds) than that with plant spacing of 2 m x 2 m (79 661 buds). However, ihe first plant spacing produced smaller diameter (34.47 mm) than the second one (42.53 mm) The highest number of active buds was produced by the clone SS 29 x C, i.e. 123 959.33 buds per ha or 33.33 buds per plant","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89455920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEGRADASI DINDING SEL Phytophthora capsici OLEH ENZIM KARBOSI METIL SELULASE ASAL Trichoderma harzianum","authors":"Karden Mulya, Melly Harmen","doi":"10.21082/LITTRI.V9N2.2003.74-78","DOIUrl":"https://doi.org/10.21082/LITTRI.V9N2.2003.74-78","url":null,"abstract":"Phytophthora capsici Leonian adalah patogen penyebab penyakit busuk pangkal batang lada (Piper nigrum L). Trichoderma harzianum Rifai merupakan agen hayati yang cfektif dan menyebabkan lisis miselia P. capsici. Penelitian ini bertujuan unluk mcngc(ahui peran enzim karboksimetilselulase (CMC-ase) yang diproduksi oleh T. harzianum dalam mendegradasi dinding sel P capsici. Penelitian terdiri atas tiga aktivitas yaitu (a) deteksi produksi enzim CMC-ase, (b) hidrolisis dinding sel P. capsici. dan (c) penggunaan siapan kasar dinding sel (SKDS) P. capsici oleh T. harzianum sebagai satu-satunya sumber karbon dalam media tumbuhnya Aktivitas enzim dideleksi secara kualitatif dengan membandingkan zona bening yang terbentuk pada medium karboksi metil selulosa (CMC) yang diperlakukan dengan satu tetcs iltrat kultur 7 harzianum dan diwarnai dengan larulan congo red, sedangkan aktivitas CMC-ase secara kuantitatif diukur sebagai nilai setara glukosa yang terlepas dari substrat setelah diinkubasi dengan ekstrak kasar CMC-ase. Enzim CMC-ase dickstrak dari kultur filtrat T. harzianum F.51 melalui pengendapan protein dengan 85% ammonium sulfat pada suhu 4°C diikuti dengan sentrifusi dan dialisis. Aktivitas spcsifik enzim tersebut dalam mendegradasi CMC (30,29 unif//g protein) lebih rendah dari aktivitas enzim selulase komersial (97.18 unit/^g protein). Enzim selulase komcrsial dan ekstrak enzim dari kultur 7 harzianum juga dapat menghidrolisis SKDS P. capsici N2 dengan aktivitas masing-masing 31.18 unit dan 19.26 unit. Isolat F-51 tumbuh dan menghasilkan aktivitas enzim serupa manakala karboksimclil selulosa pada media tumbuh diganti dengan SKDS sebagai sumber karbon tunggal Hasil ini menunjukkan bahwa CMC-ase berperan penting dalam mckanisme antagonis T. harzianum terhadap /' capsici. Penelitian lebih lanjut dalam mckanisme produksi enzim ini berpeluang untuk meningkatkan potensi agen hayati.Kata kunci : Piper nigrum L., Trichoderma harzianum Rifai, Phytophthora capsici. karbosimctilsclulasc, agen hayati ABSTRACTDegradation of cell wall of Phytophthora capsici N2 by carboxy methyl cellulose <;/ Trichoderma harzianum ES1Phytophthora capsici l-eonian is a causal agent of foot rot disease on black pepper (Piper nigrum L ). Trichoderma harzianum Rifai is an effective biocontrol agent and causes lyscs on P. capsici mycelium This experiment was aimed to study the role of carboxymethylccllulose (CMC- ase) produced by T. harzianum in degrading P. capsici cell wall. The experiment was composed in three activities (a) detection of the CMC-ase enzyme production, (b) degradation of P. capsici cell wall by crude extract of the enzyme, and (c) utilization of crude cell wall preparation (cwp) of P. capsici by T. harzianum as single carbon source in its growth medium CMC-ase activity was detected qualitatively on carboxymethylccllulose (CMC) medium, and quantitatively it was measured as glucose equivalent released from substrate after treated with crude extract of CMC-ase. CMC-ase","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78555530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PEREKAYASAAN INSTALASI PEMANFAATAN UDARA PANAS BUANG PADA PENGOVENAN TEMBAKAU VIRGINIA","authors":"Samsuri Tirtosastro, Abi Dwi Hastono, Darmono","doi":"10.21082/LITTRI.V9N1.2003.17-24","DOIUrl":"https://doi.org/10.21082/LITTRI.V9N1.2003.17-24","url":null,"abstract":"Pcrekayasaan instalasi pemanfaatan udara panas buang pada pengolahan daun tembakau Virginia menjadi krosok fc (flue-cured) telah dilaksanakan di Balai Penelitian lanaman lembakau dan Serat, Malang, Jawa Timur. Pengujian alal dilakukan di lombok Timur, Nusa Tcnggara Barat, pada musim panen antara bulan Agustus sampai dengan Oktober 2000 di sentra produksi tembakau Virginia Hasil penelitian ini diharapkan dapat mendukung efisiensi penggunaan biaya bahan bakar sekaligus mengurangi subsidi bahan bakar minyak dari Pemerintah Konstruksi instalasi pemanfaatan udara panas buang terdii atas pipa penghubung (d~ 15.24 cm) dua oven dan blower 0 75 TK untuk mcngalirkan udara panas buang dari oven pertama ke oven kedua. Kapasitas oven pertama yang digunakan 3 547 kg, sedangkan oven kedua 2 617 kg daun lembakau. Hasil penelitian menunjukkan bahwa. pemasangan instalasi udara panas buang dapat menekan konsumsi bahan bakar oven kedua 12 39% yaitu dari 1 352 liter minyak tanah tiap kg krosok menjadi 1.141 liter tiap kg krosok. Analisis ekonomi pada harga minyak tanah Rp 700/1 penggunaan alat tersebut belum memberikan keuntungan yang bcrati karena nilai rasio BC ■ 1.29. NPV ■ Rp 99 835 885 dan IRR - 52 73%, dibandingkan tidak memasang instalasi tersebut dengan nilai rasio BC 1.29, NPV Rp 98 547 176, dan IRR 52 78%. Namun bila harga minyak tanah Rp. 1 000/1 maka pemasangan instalasi udara panas buang membeikan nilai rasio BC 1.25, NPV Rp. 88 246 683 dan IRR -52 58%. lebih baik dibanding tidak memasang instalasi tersebut (rasio BC 1 24. NPV Rp. 85 977 099 dan IRR - 52 63%) Peluang keuntungan rclatif makin besar jika harga minyak lanah makin linggi. Keuntungan lain pemasangan instalasi ini adalah menekan subsidi bahan bakar minyak.Kata kunci : Nicotiana tabacum 1. , oven, instalasi udara, panas buang, mutu, aspek ekonomi ABSTRACTUtilization of waste heat-air installation in Virginia tobacco curingInstallation of me waste hcal-air utilization in Virginia tobacco curing to produce flue-cured tobacco has been conducted in Indonesian Tobacco and fiber Crops Research Institute. Malang, Indonesia. The equipment test was taken place in Virginia tobacco production centre. East lombok. West Nusa Tcnggara Province on harvesting-time between August and October 2000 Ihe result of the research was expected to suppot fuel efficiency, and decrease the government fuel-oil subsidiary. Construction of Ihe waste hcat- air installation consisted of connecting-pipe (d 15.24 cm) between two eunng-bams. and 0 75 HP blower for blowing the waste heat-air to the second cunng-barn The capacity of the irst curing-barn was 3 547 kg tobacco leaves and second curing-bam was 2 617 kg tobacco leaves. The results of the experiment showed that the installation of the waste hea(-air equipment could reduce 12.39% of fuel consumption of second curing-bam, from 1.352 I kerosene per kg to 1 141 I kerosene per kg of the cured leaves The economic analysis of the equipment al kerosene price Rp 700/1 was that eq","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75987629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}