Jurnal Penelitian Tanaman Industri最新文献

{"title":"PENGARUH KEPADATAN TERNA DAN LAMA PENYULINGAN TERHADAP RENDEMEN DAN KARAKTERISTIK MINYAK Melaleuca bracteata","authors":"Nanan Nurdjannah","doi":"10.21082/LITTRI.V7N4.2001.124-127","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N4.2001.124-127","url":null,"abstract":"The influence of material bulk density and duration of distillation on the yi eld and characteristic of Melaleuca bracteata oilMelaleuca bracteata belongs to Myrtaceae family which is grown wildly in Australia and Quensland. The oil is produced from Ihe leaves and (wigs by distillation and is used in fragrances industry. The oil content of leaves and twigs range between 0.4 to 1.0% with metil eugenol as the major component (70-80%). Because of its high metil eugenol content M. bracteata oil can be used to control fruil flies The experiment was carried out to evaluate the influence of material bulk density in the distillation vessel and duration of distillation on the yield and charac¬ teristic of the oil produced. Material used was (he leaves and twigs of M bracteata from the experimental garden of the Research Institute for Spice and Medicinal Crops. Manoko, Lembang (1200 in above the sea level). The experiment at 1993 was designed as completely randomized design, arranged factorially with three replications. The result showed that the optimum distillation condition was 1 56 g/l material bulk density in the vessel and 3 hours distillation. Such distillation condition produced 1.09 % oil yield with (he characteristics as follow speciic gravity I 0263, refractive index 1 5296, optical rotation -3.3°, solubility in 70% cthanol 1 : 1, methyl eugenol content 86.1%, acid number 0.56, ester number 15.4 and ester number after acetylation 39.3. Referring to Australia oil, the Indonesian M bracteata oil has higher value of esther number both before and after acetylation.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80315588","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 PERIODE PENCAHAYAAN TERHADAP PERTUMBUHAN, HASIL DAN KOMPONEN MINYAK TANAMAN MENTHA (Mentha piperita L.)","authors":"Rosihan Rosman, Sri Setyati Harjadi, S. Sudiatso, Sudirman Yahya, B. Purwoko, nFN Chairul","doi":"10.21082/LITTRI.V10N1.2004.12-20","DOIUrl":"https://doi.org/10.21082/LITTRI.V10N1.2004.12-20","url":null,"abstract":"Penelitian yang betujuan mcngkaji pengaruh periode pcncahayaan terhadap petumbuhan, hasil dan komponen minyak tanaman M. piperita L, telah dilakukan di Instalasi Penelitian Balai Penelitian Tanaman Rempah dan Obat, Lembang, Jawa Barat, dai bulan Januari 2000 hingga Juli 2000. Penelitian dilakukan dua tahap. Tahap pertama membuat variasi lingkungan cahaya dan tahap kedua penyulingan dan analisis komponen minyak dengan kromatograi gas spektrometer massa. Penelitian menggunakan rancangan acak kelompok 5 perlakuan, yaitu I^> (panjang hari normal sebagai kontrol), L, (pemutusan periode gelap 1 jam, pukul 21.00-22.00 mulai umur 30 hari), Lj (pemutusan peiode gelap 1 jam, pukul 21.00-22.00 mulai umur 60 hai), Lj (penambahan cahaya 4 jam, pukul 18.00-22.00 mulai umur 30 hai), dan U (penambahan cahaya 4 jam, pukul 18.00-22.00 mulai umur 60 hari). Hasil penelitian menunjuk¬ kan bahwa perubahan lingkungan mengubah fcnologi tanaman M. piperita L, meliputi petumbuhan vegetatif dan reproduktif, yang selanjutnya mempengaruhi sintesis menthol. Penambahan cahaya 4 jam mulai umur 30 hari setelah tanam (Li) memberikan petumbuhan vegetatif dan reproduktif paling baik, dengan ciri-ciri morfologi tanaman sebagai berikut tanaman berbunga, batang tegak (tidak rebah), tanaman tinggi, diameter batang besar, jumlah ruas banyak, stolon sedikit, jumlah daun banyak dan lebar. Fcnologi tanaman yang mcmiliki petumbuhan vegetatif dan reproduktif yang baik dapat menghasilkan produksi tema dan minyak yang tinggi. Perubahan fcnologi tanaman akibat manipulasi lingkungan mengubah komponen minyak dan mutu menthol. Fcnologi tanaman yang memiliki petumbuhan vegetatif maupun reproduktif yang baik menghasil¬ kan menthol tinggi dan menthofuran rendah. Penambahan cahaya 4 jam mulai umur 30 hari setelah tanam menghasilkan minyak dengan kadar menthol paling tinggi yaitu 54.89% dan menthofuran paling rendah yaitu 7.83%.Kata kunci: Hasil, komponen, minyak peppermint, Mentha piperita L., peiode pcncahayaan ABSTRACTEffect ofphotoperiod on the growth, yield and component ofpeppermint oilResearch on the effect of photoperiod on the growth, yield and component of peppermints oil of M. piperita, was carried out in the expeimental garden of the Institute for Spice and Medicinal Crops, Lembang West Java, from January to July, 2000. The study was conducted in two steps, i.e. The irst step was manipulation of photo peiod using TL lamps and the second step was distillation and analisis of peppermint oil from their products with gas chromatography and mass spectromctry. The experiment used ive treatments, i.e. (1) control or normal light peiod, (2) four hours light supplement at the age of 30 days and 60 days ater planting, and (3) one hour interruption of dark peiod at the age of 30 days and 60 days. The result showed that the changes in light peiod affected the phenology of the crop. Four hours light supplement at the age of 30 days gave the best vegetative and reproductive growth (morphology of Mentha p","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88889372","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":"PENGENDALIAN HAMA TERPADU Helopeltis antonii PADA TANAMAN JAMHU MENTE","authors":"E. Karmawati, T. Savitri, Warsi Rachmat, Tri Eko Wahyono","doi":"10.21082/LITTRI.V7N1.2001.1-5","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N1.2001.1-5","url":null,"abstract":"Integrated Pesl Control Research of // antonii on cashew was studied out in Wonogiri, Central Java from May lo December 2000. Ihe objective of the study was lo obtain Ihe efective eonlrol method Spill plot design was used. Ihe main plots were intercropping system of cashew with (a) niunghcan and (b) mixed of cassava, peanut and maize, The subplots were treatments of (a) benomyl without B bassiana. (b) R bassiana without benomyl, and (c) eonlrol The concentation of benomyl used were 2 g per liter, while for II. bassiana 11) g per liter containing I. I x 10* conidias. Treatments were applied on Ihe beginning of October 2000, and observations were done twice in one month. The area needed for all plots were 24 000 m1 (4 replications). Hie asscsments consisted of (a) number of //. antonii eggs, nymphs and its natural enemies, (b) number of flowers and shoots attacked, and (c) cashew nut per tree. The result showed thai there was interaction between the Iwo factor tested. Mix-cropping with R bassiana reduced //. antonii population on cashew and increased productivity from 3.85 kg lo 5.33 kg per tree. These treatments were therefore recommended for controlling the pest.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82930360","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 DOSIS DAN AGIHAN PEMUPUKAN TERHADAP PERTUMBUHAN JAMBU METE (Anacardium occidentale)","authors":"A. Dhalimi","doi":"10.21082/LITTRI.V10N1.2004.21-27","DOIUrl":"https://doi.org/10.21082/LITTRI.V10N1.2004.21-27","url":null,"abstract":"Penelitian lapangan telah dilaksanakan di Instalasi Penelitian Cikampek, Balai Penelitian Tanaman Rempah dan Obat sejak Juni 1997 sampai dengan Desember tahun 2000, yang bertujuan untuk mendapatkan dosis dan agihan pemupukan terbaik terhadap pertumbuhan jambu mete. Perlakuan yang diuji adalah (1) Dosis pupuk NPK (1:1:2) yang terdiri atas 300, 600 ,900, dan 1200 g/tan/thn, dan (2) agihan pemupukan yang terdiri atas 50%:50%, 60%:40%, 70%:30% dan 100%. Pada tanaman berumur < 2 tahun, pupuk diberikan pada awal dan akhir musim pcnghujan, sedangkan pada umur > 2 tahun pupuk dibeikan pada awal musim bunga dan 2 bulan beikutnya. Penelitian menggunakan rancangan acak kelompok yang diulang 2 kali dengan ukuran plot 4 tanaman/pcrlakuan. Perlakuan merupakan kombinasi dari dosis pupuk dan agihan sehingga terdapat 16 perlakuan. Sampai tanaman berumur 1 tahun 7 bulan dosis pupuk yang dibeikan adalah 1/6 dai dosis pcnuh, sedangkan dosis penuh baru dibeikan setelah tanaman berumur 2 tahun 7 bulan di lapangan. Hasil penelitian menunjukkan bahwa pada fase petumbuhan tanaman umur 7 bulan di lapangan belum terlihat pengaruh dosis pemupukan NPK dan agihannya terhadap petumbuhan vegetatif. Pengaruh baru terlihat setelah tanaman berumur 1 tahun 7 bulan di lapangan, dengan pembeian dosis pupuk 100 g/ tan/thn dengan agihan 100%. Selanjutnya setelah berumur 2 tahun 7 bulan digunakan dosis penuh, dengan hasil terbaik ditunjukkan oleh perlakuan 600 g NPK/tan/thn dengan agihan 50%: 50%. Memasuki umur 3 tahun 7 bulan tidak terlihat lagi pengaruh pemupukan NPK dan agihannya, kecuali terhadap pertumbuhan tinggi tanaman yang dipupuk 900 g NPK/phn/thn dengan agihan 70%:30%.Kata kunci:Anacardium occidentale, agihan, dosis, jambu mete, pupuk, pertumbuhanABSTRACT Effect of dosage and split-portion on the growth of cashew plants (Anacardium occidentale) A ield tial was conducted in Cikampek Experimental Garden, Spice and Medicinal Crops Research Institute, rom June 1997 to December 2000. The objective of the research was to ind out the best dosage of fertilizer and split-portion for cashew plant the growth. The treatment tested were (1) dosage of NPK (1:1:2), comprised of 300, 600, 900, and 1 200 g/plan/year, and (2) split-potion of fertilizer, consisted of 50%:50%, 60%:40%, 70%:30% and 100%:0%.On the plants less than two years old, the fertilizer was applied at the onset and at the end of rainy season, while on the plants more than two years old, the fetilizer was applied at the beginning of flowering season and two months aterwards. A randomized block design was used with 2 replicates and 4 planls/'treatment. The result showed that at the age of seven months, all the treatment were not significantly different on the vegetable growth of cashew. This indicated that for plants less than 1 year, the best dosage was 50 g NPK/plan/year, applied 50% at the onset and 50% at the end of rainy season. In the second year, 100 g NPK/plan/year showed the best treatment, applied 100% on the onset ","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82751514","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":"KAJIAN SOSIAL EKONOMI MASYARAKAT PETANI PERKEBUNAN DI DALAM DAN DI SEKITAR HUTAN","authors":"Syafru Kemala","doi":"10.21082/LITTRI.V8N1.2002.12-19","DOIUrl":"https://doi.org/10.21082/LITTRI.V8N1.2002.12-19","url":null,"abstract":"The contribution of estate subsector to the income of the farmers living in the forest and in the ■urronding area is still low. This study was caried out socioeconomic and their roles in improving their welfare. The study was conducted rom August to October 2000 in three forest management systems (1) system of Hak Pengusahaan Hutan (HPH) which was represented by Sukamulya and Siabu villages, Bangkinang, Kampar District, and Rambah Jaya Village, Rambah Hilir, Rokan Hulu District; (2) System of Hutan Taman Nasional which was represented by Andongrejo and Eaat Java Province; (3) System of Hutan Sosial (Perum Perhutani) which waa represented by Kedung Urang Village, Cilacap Subdistrict, and Sawangan Village, Jeruk Legi Subdistrict, Cilacap District, Central Java Province. Sample villages were chosen through purpose sampling method. The data were analyzed desciptively and comparative and approacted through socioeconomic indicators and criteria. The results of the research indicated that the socioeconomic condition of the estate farmers living in the forest and in the surrounding are was lower compared to those of the area was lower compared to those of the rice farmers and others farmers. The average income of the estate farmers ranged between Rp 360 860.00 and Rp 523 550.00. The range of income distribution (Gini ratio) was 0.295 to 0.430. Out of the three forest mana¬ gement systems, the village of Hutan Taman Nasional was better than those of two other systems, where the income level waa Rp 432 000.00 Gini ratio was 0.320; structure and inrastucture was moderate.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87434998","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 KONSENTRASI STARTER Saccharomyces cerevisiae DAN LAMA FERMENTASI TERHADAP RENDEMEN DAN MUTU MINYAK KELAPA","authors":"Rindengan Barlina, Steivie Karouw, P. Pasang","doi":"10.21082/LITTRI.V10N3.2004.106-111","DOIUrl":"https://doi.org/10.21082/LITTRI.V10N3.2004.106-111","url":null,"abstract":"Untuk mendapatkan cara pengolahan minyak kelapa yang lebih eisien dalam menghasilkan rendemen dan mutu yang tinggi dan tahan simpan serta aman dikonsumsi telah dilakukan penelitian pengaruh konsentrasi starter Saccharomyces cerevisiae dan lama fermentasi terhadap rendemen mutu minyak kelapa. Penelitian dilaksanakan di Laboratorium Balai Penelitian Tanaman Kelapa dan Palma Lain Manado dan Kebun Percobaan Mapanget sejak bulan Maret sampai Desember 2001. Penelitian menggunakan rancangan acak lengkap disusun secara faktorial, yaitu faktor A adalah konsentrasi starter Saccharomyces cerevisiae, terdiri dari 0%, 0.25%, 0.35%, 0.45% dan faktor B adalah lama fermentasi krim. terdiri dari 0 jam, 12 jam, dan 24 jam. Ulangan dilakukan sebanyak 2 kali. Hasil penelitian diperoleh rendemen minyak tertinggi 23.83% pada fermentasi krim selama 24 jam. Mutu minyak kelapa yang dihasilkan sebagai berikut kadar air 0.03 - 0.18%, asam lemak bebas 0.15 - 0.29%, warna bening dan bau harum/ normal, bilangan peroksida berkisar 0.20 - 0.40 meq/kg, mutu minyak kelapa tersebut memenuhi Standar Nasional Indonesia (SNI) 01-2902-1992.Kata kunci: Minyak kelapa, Saccharomyces cerevisiae, konsentrasi, fermentasi. rendemen, mutu ABCTRACT Effect of concentration of stater Saccharomyces cerevisiae and duration of fermentation on the content and quality of coconut oilResearch on the effect of concentration of starter Saccharomyces cerevisiae on the content and quality of coconut oil was conducted at the Laboratory of Indonesian Coconut and Palmae Research Institute (ICOPRI) and Mapanget Research Instalation from March to December 2001. The objective of the research was to find out the effective technique and processing of coconut oil. The research used a completely randomized design with 2 factors and 2 replications. Factor A was the concentration of starter Saccharomyces cerevisiae of 0%, 0.25%, 0.35%, 0.45% and factor B was duration of fermentation consist of 0 hour, 12 hours, and 24 hours. The results showed that the highest yield of coconut oil is 23.83% was obtained by fermented coconut cream for 24 hours. The coconut oil had good quality with moisture content about 0.03 to 0.18%, free fatty acid content about 0.15 to 0.29%, colorless, good smell and peroxide value about 0.20 - 0.40 mcq/kg, the quality of coconut oil fulfilled the requirements of Indonesian National Standard (Standar Nasional Indonesia/SNI 01-2902-1992).Key words: Coconut oil, Saccharomyces cerevisiae. concentration, fermentation, yield and quality","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75893535","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 PEMANGKASAN TANAMAN LADA DAN TAJARNYA TERHADAP HASIL","authors":"U. Daras, P. Wahid","doi":"10.21082/LITTRI.V6N3.2000.55-60","DOIUrl":"https://doi.org/10.21082/LITTRI.V6N3.2000.55-60","url":null,"abstract":"The effect of living post and pepper vines primings on the pepper yieldTo obtain good yield of pepper, farmers fequently apply various treatments to their crops, including pruning of the pepper vines and or their living post. Studies on the aspects of the pruning ae however very limited. Therefore a ield experiment was conducted to investigate the effects of pruning of pepper vines and their living post on the pepper yield. The experiment was carried out at Sukamulya Research Station, Sukabumi. A split plot design with three rcplicaties was used. The main plot was the pruning of living post, and the sub plot was the pruning of pepper vines Plot size was 20 plants per plol wilh spacing of 2.5 m x 2.5 m Results showed that there was signiicant interaction between the pruning of living post and pepper vines. The pruning of living post may be carried out either 3 times (October, January and April) or twice (October and January) a year. However. If the pruning of the living post is carried out 3 times per year, Ihe vine would be pruned once a year or not at all. On the other hand, if the pruning of living post is carried out twice a year, the pepper vines would be pruned 6 times a year.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76049320","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 BEBERAPA CARA PEMANGKASAN TAJUK TERHADAP PERTUMBUHAN DAN PRODUKSI GAMBIR (Uncaria gambir (Hunter) Roxb)","authors":"Zulkifli Hasan","doi":"10.21082/LITTRI.V7N4.2001.120-123","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N4.2001.120-123","url":null,"abstract":"Effect of pruning on the growth and yield of gambir (Uncaria gambir)Gambir is harvested by pruning Uie branches, twigs and leaves. Improving pruning method in harvesting Ihe crop may cnchancc (o increase the yield of dry gambir where al prcscnl (he yield was 632 kg/ha. Therefore, different techniques of pruning were studied, including : table, clean, and deep prunnings, and pruning technique adapted by farmers as the control The study was conducted in the Laing Experiment Farm, Solok, from April 2000 to February 2001. The experiment was designed as a randomized block in 6 replicates. Results showed that pruning conducted al harvest improved the growth of plant and increase the yield of dry gambir. The highest yield of dry gambir compared with table pruning produced 735,25 kg/ha, significantly higher than deep pruning (371, 25 kg/ha), clean pruning (464.40 kg/ha) or pruning adapted by farmer (521 kg/ha). The last three methods were not signiicantly different in terms of the yield.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76982742","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 SUHU DAN UKURAN INANG TERHADAP BIOLOGI Trichogramma sp. PARASITOID TELUR PADA Cricula trifenestrata","authors":"E. A. Wikardi, T. Djuwarso, N. Tyasning, O. N. Risanti","doi":"10.21082/LITTRI.V7N1.2001.18-23","DOIUrl":"https://doi.org/10.21082/LITTRI.V7N1.2001.18-23","url":null,"abstract":"The experiment was conducted to study the effect of temperature and host size on the growth and development of Trichogramma sp., a species of parasitoid which attacks Cricula trfenestrata s eggs. The experiment was carried oul in the Pesl laboratory, Dalillro, Bogor. with relative humidity ranged between 60-80%. temperature ranged.between 23-25°C, 26-28°C, and 29-3 l\"C. with two kinds of different egg size (big and small). This research was conducted from March lo Sepeniber 2000, to optimize the production (generation) of Trichogramma sp. in the Laboratory. The resuts showed that some of Ihe biological index of Trichogramma sp., changed when it was cultivated in different temperature and host size. Temperature influenced longivity of parasitoid while host size influenced almost all of Ihe biological index. Although it was hardly measured, however the temperature and host size seemed to have mutual support in Influencing 7}\"fcAogrximnta biological index. In low temperature, the development of parasitoid was longer than that in high temperature, while parasitoid behaviour in ovipositing was influenced by egg size. On Ihe big size host, parasitoid tended ovipositing all al once, while thai on small host ovipositing was done one by one. Ihe average of Trichogramma generation on big host was 42.1 ± 17.1 with sex ratio 1 8.8 I , while thai on small host was 73.3 ± 1 3.2 with sex ratio 6.71 I , where female was plcnticr than male. By using Birch methods, it was showed that intrinsic growth rate (r„) and net reproductive rale (Ro) on big size host were lower compared with small size host while generation lime (T) on big host was longer than small host. Ro values were significantly different belween the two hosts. The result of this experiment also showed that on both host sizes, optimum value of T, Ro and rm was achieved on 26-28°C. These results arc expected to guide parasiloid breeders lo decide the temperature and host size in mass cultivating Trichogramma sp. in laboratory. While for ield application, tempeature and hosl range arc Ihe factors should be considered.","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77960883","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":"KARAKTERISASI Erwinia chrysanthemi PENYEBAB PENYAKIT BUSUK BAKTERI PADA DAUN LIDAH BUAYA (Aloe vera)","authors":"Supriadi, Nildar Ibrahim, Taryono","doi":"10.21082/LITTRI.V8N2.2002.45-48","DOIUrl":"https://doi.org/10.21082/LITTRI.V8N2.2002.45-48","url":null,"abstract":"Penyakit busuk (soft rot) pada daun tanaman lidah buaya (Aloe vera) disebabkan oleh F.rwima chrysanthemi pertama kali dilaporkan di Kcpulauan Kaibia tahun 1992. Pada awal tahun 2001, gejala pcnyakil busuk daun juga ditemukan pada tanaman lidah buaya di Semplak, Jawa Barat. Mengingat kerusakan yang ditimbulkan berupa pembusukan pada daun dan pangkal batang yang parah dalam waktu singkat, maka diduga penyebabnya cukup ganas dan dikhawatirkan dapat menjadi kendala pengembangan tanaman lidah buaya yang akhir-akhir ini sedang banyak diminati. Tujuan penelitian ini adalah mengidcntifikasi penyebab penyakit tersebut. Penelitian dilakukan di Laboratorium Bakteri Balai Penelitian Tanaman Rempah dan Obat, dari bulan April - Agustus 2001. Contoh daun lidah buaya sakit berasal dari kebun petani di Semplak, Bogor. Setelah melalui pengamatan gejala penyakit diikuti dengan prosedur isolasi dan pemumian patogen. maka diperoleh isolat kultur baktei yang bentuknya bulat dan pinggirnya tidak rata serta berwarna putih pada medium sukrosa pepton agar. Kultur baktei tersebut bersifat patogenik dan menimbulkan gejala penyakit sama seperti di lapangan, setelah diinokulasikan melalui pelukaan pada daun lidah buaya. Hasil karaktcrisasi morfologi, kultur dan biokimia isolat baktei tersebut menunjukkan sifat ncgatif untuk pewamaan Gram, pigmen fluorescn, oksidasc, dan produksi asam dari unsur karbon laktosa dan dulsitol. Sedangkan karaktcr positif diperoleh dai pengujian oksidasi/fermentasi, lesitinase, pembusukan jaringan umbi kentang, sensitivitas terhadap eitromisin, pertumbuhan pada suhu 37° C, NaCI 5%, serta menghasilkan asam pada medium mengandung manitol Inokulasi pada umbi ubi jalar menyebabkan pembusukan dalam waktu yang singkat. Berdasarkan data tersebut dapat disimpulkan bahwa penyebab penyakit busuk daun pada tanaman lidah buaya di Semplak adalah Erwinia chrysanthemi.Kata kunci: Aloe vera, busuk daun, Erwinia chrysanthemi, Bogor ABSTRACT Characteristics o/Envinia chysanthemi causing bacterial soft rot ofAloe (Aloe VeraJThe bacterial sot rot of aloe, caused by Erwinia chrysanthemi, was first identified in Caibbean Island in 1992. In early 2001, similar symptoms were found on the aloe plants grown in Semplak, Bogor, West Java. Based on its symptom and progressively spread, especially on the leaf and basal stem, it appeared that the disease was serious and therefore threatened the current development of die plants. This study was conducted in the laboratory of the Research Institute for Spice and Medicinal Crops, Bogor, in April - August 2001. The objective of the study was identifying the cause of the sot rot disease of aloe in Semplak, Bogor. Diseased leaves of aloe were obtained from Semplak. Following the examination of the symptoms, isolation and purification of he causal agent, the bacteial isolates were found. They were round, white colony characteistics on sucrose peptone agar medium. The isolate was pathogenic and caused similar disease symptoms following ","PeriodicalId":17774,"journal":{"name":"Jurnal Penelitian Tanaman Industri","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78155482","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}