Tubagus Bahtiar Rusbana, Tubagus Bahtiar
Staf Pengajar Agroekoteknologi Fakultas Pertanian Universitas Sultan Ageng Tirtayasa

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PENGARUH KUAT MEDAN MAGNET DAN LAMA PERENDAMAN TERHADAP PERKECAMBAHAN PADI (Oryza sativa L.) KADALUARSA VARIETAS CIHERANG Putra, Yuhelsa; Rusbana, Tubagus Bahtiar; Anggraeni, Wulan
Jurnal Agroekoteknologi Vol 6, No 2 (2014)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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Abstract

This research was aimed to know the effect of magnetic field strenght and duration of Immersion on Germination of ExpiredRice (Oryza sativa L.) Seed of Ciherang Variety. This research used a Randomized Complete Design with two factors. The first factor was magnetic field strenght (M) consisting of four levels, namely: M0 (0 mT), M1 (15 mT), M2 (20 mT) and M3 (25 mT). The second factor was duration immersion in magnetized water (T), which consists of three levels, namely: T1 (12 hours), T2 (24 hours) and T3 (36 hours). The combination treatment was repeated three times, so there was 36 experimental units. Observed variables were germination age (days), the maximum growth potential (%), growth rate (%/day), normal germination percentage (%) and abnormal germination percentage (%). The result showed that magnetic field strenght and magnetized water is not able to improved for all observed variables were germination age (days), maximum growth potential (%), growth rate (%/day), normal germination percentage (%) and abnormal germination percentage (%). There was an interaction between the magnetic field strenght and duration of immersion time. The interaction magnetic field strenght of 0 mT and 15 mT with 12 hours and 20 mT with 24 hours immersion. Improved the growth rate and normal germination percentage by 0,95 %/day and 13,33% consecutively.
POTENSI BAKTERI RHIZOSPER PISANG SEBAGAI AGEN ANTAGONIS LAYU FUSARIUM PISANG (Fusarium oxysporum f.sp. cubense) SECARA IN VITRO Saylendra, Andree; Rusbana, Tubagus Bahtiar; Maulana, Arif
Jurnal Agroekoteknologi Vol 7, No 1 (2015)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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Abstract

The research was conducted to explore and determine the presence of antagonistic bacteria on banana plants (Musa spp) to inhibit (Fusarium oxysporum f.sp. cubense). The research was conducted in the laboratory of Agroekoteknologi, Faculty of Agriculture, Sultan Ageng Tirtayasa University. The experiment was arranged in non-factorial Randomized Completely Design (RCD) using 3 replication. The treatment consisted of 9 rhizobacteria isolates acquired from rhizosper of roots of banana on first screening. The test results showed antagonistic in vitro testing is able to inhibit the mycelium growth of Foc where the greatest inhibition was shown by BR 45 and BR 15 with the largest percentage inhibition of 88.90% and 87.78%. Observations on colony morphology showed 7 rhizosphere bacterial, genus observed as Bacillus sp. and that besides it was not identified. Research showed that the bacteria could potentially control the banana root disease caused by Fusarium.
PENGARUH PENAMBAHAN ASAP CAIR TERHADAP PERUBAHAN MUTU NIRA AREN SELAMA PENYADAPAN DAN PENYIMPANAN Rusbana, Tubagus Bahtiar
Jurnal Agroekoteknologi Vol 1, No 2 (2009)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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ABSTRACTPalm juice as a raw material of brown sugar can be fermented easly. Smoke is used traditionally as an alternative indirect way to preserve the palm juice. Preservation of palm juice using liquid smoke directly have never been conducted before. The aim of this study is to investigate the effects of liquid smoke on palm juice preservation. First step, the liquid smoke was redestilated. Then, 0,50%, 1,00%, 1,50%, 2,00%, and 3,00%(v/v) concentration of liquid smoke was applied on palm juice when tapping and storage. It showed that the liquid smoke with concentration under 0,5% (v/v) cannot preserve the palm juice during 12 hours storage. 1% until 3% liquid smoke can preserve the palm juice during 12 hours storage. In fact, the pH of palm juice with liquid smoke increased when it was tapped, but the pH of palm juice without liquid smoke decreased certainly. The concentration of liquid smoke 1% and 3% could preserve the pH of palm juice above 6. That indicated the palm juice could be processed become brown sugar.Key Words: Liquid Smoke Palm Juice, Tapping, and Storage
PENGARUH DESTILASI ULANG ASAP CAIR TERHADAP PERUBAHAN WARNA GULA MERAH Budijanto, Slamet; Rusbana, Tubagus Bahtiar
Jurnal Agroekoteknologi Vol 1, No 2 (2009)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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ABSTRACTBrown sugar has a specificity than others. It is not only as a sweetener, but also have a low glicemic index and specific flavor. That are the reason why does the brown sugar become a prospective commodity in the global market. Palm juice is th raw material of brown sugar which is easy to fermentation when it is tapped. An alternative way to preserved the palm juice was using liquid smoke. The aim of this research was identifying the effect of additional liquid smoke with  redistilation and without redistilation on the colour’s changing of brown sugar. It used Chromameter CR300 to measured colour intencity with La and b system. The result showed that additional liquid smoke with or without redistillation  made  the colour’s changing. The colour of  brown sugar with additional redistillation liquid smoke lighter than brown sugar with additional liquid smoke without redistillation.Key words : Brown Sugar, liquid smoke, redistillation, colour.
PENGARUH MEDAN MAGNET SOLENOIDA DAN PERENDAMAN AIR MAGNETISASI TERHADAP BENIH KACANG KEDELAI ( Glicyne max (L) Merril) KADALUARSA VARIETAS TANGGAMUS Putra, Yuhelsa; Rusbana, Tubagus Bahtiar; Dharmesta, Livio Agung
Jurnal Agroekoteknologi Vol 7, No 2 (2015)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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The study aims to determine the effect of the magnetic field strength and the duration of magnetized water on germination of 2 year old Tanggamus of expired soybean seeds. The study was carried out in a closed room with the temperature used was 16°C-20°C in Desember 2015 to January 2016. The study was compiled using a completely randomized factorial design with 2 factor. The first factor is the magnetic field strength which consist of 4 level M0 (the magnetic field strength of solenoid 0mT), M1 (the magnetic field strength of solenoid 1mT), M2 (the magnetic field strength of solenoid 2mT), M3 (the magnetic field strength of solenoid 3mT). The second factor is the duration of magnetized water which consists of 3 level T1 (the 18 hour duration of magnetized water), T2 (the 24 hour duration of magnetized water), T3 (the 36 hour duration of magnetized water). The treatment was repeated 3 times so that there are 36 units of observed variables experiment such as the germination age the potential of growth, the maximum speed of growth, the normal percentage of germination, the abnormal percentage of germination, the abnormal percentage of germination. The solenoid magnetic field treatment level 2 mT gave a very real influence on the parameters of the age of maximum growth potential, the growth rate, the percentage of normal seedliry of 6 month old and 2 year old expired soybean seeds. The treatments of soaking seeds with 24 hour duration of magnetized water produced the best developments on the 6 month old and 2 year old expired seeds even though there are differences in same of the best results in the observation parameter of both of the expired speeds. The best level treatment of 6 month old expired seed is the interaction of M2T2 level (the magnetic field strength 2mT and the duration of 24 hour magnetized water) which provided the best result to the parameter of maximum growth potential, percentage of normal germination, and percentage of abnormal germination. While the best level treatment of 2 year old expired seed is the interaction of M2T3 level (the magnetic field strength 2mT and the duration of 36 hour magnetized water) which provided the best result to the parameter of germination age, speed of growth and percentage normal germination.Key words : magnetized, solenoid, expiry, germination, soybean, seeds
Uji Antagonis Pseudomonas sp. Asal Endofit Perakaran Padi Terhadap Penyakit Blas (Pyricularia oryzae) Secara In Vitro Saylendra, Andree; Rusbana, Tubagus Bahtiar; Herdiani, Linda
Agrologia Vol 4, No 2 (2015)
Publisher : Pattimura University, Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.406 KB) | DOI: 10.30598/a.v4i2.203

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The purpose of this research was to determine the antagonistic bacteria Pseudomonas spp. of paddy roots endophytic against disease blast (Pycularia oryzae) in vitro. This research was conducted at the Laboratory of Agroecology, Faculty of Agriculture, University of Sultan Ageng Tirtayasa on April to June 2015. This research implemented experimental one factor that arranged in Completely Randomized Design with three replications. The treatment consisted of 9 isolates of Pseudomonas sp. which was screened from endophytic roots of paddy plants.  The test  results  showed  that  antagonistic in  vitro  testing could inhibit the growth P. oryzae. Inhibition of 9 isolates to the growth Pseudomonas spp. had the significant clear zone. Isolate Ps 17 (58.89%), Ps 22 (54.44%), Ps 37 (52.06%) and Ps 39 (61.42%) have the largest inhibition. The results showed that the bacteria Pseudomonas sp. on this research is potential on controlling disease blast in paddy plant.
Inisiasi Tunas Kokoleceran (Vatica bantamensis) pada Berbagai Jenis Media Tanam dan Konsentrasi BAP (Benzyl Amino Purine) Secara In Vitro Sudiyanti, Sri; Rusbana, Tubagus Bahtiar; Susiyanti, Susiyanti
Jurnal Agro Vol 4, No 1 (2017)
Publisher : Jurusan Agroteknologi

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Kokoleceran (Vatica bantamensis) is an endemic plant of Banten which is only in Ujung Kulon, and has been designated as identity of Banten province. Now the existence of Kokoleceran has been endangered. Based on data from the IUCN, since 1998 there has been no research. Kokoleceran initiation needs technology for preventing from the extinction. One of the mass propagation is through the technique culture in vitro. This research aimed to get the precise medium and BAP concentration for Kokoleceran, and knowing the response of Kokoleceran growth in in vitro. This research was done in November 2015 until March 2016 at the Laboratory of Biotechnology, Department of Agroecotechnology, Faculty of Agriculture, University of Sultan Ageng Tirtayasa, Serang, Banten. This research used Completely Randomized Design (CRD) two factors. The first factor was medium that were MS and WPM media. The second factor was BAP concentration which consisted of four levels namely 0 mg L-1, 1 mg L-1, 2 mg L-1, and 3 mg L-1. The results showed that the use of different media and BAP concentrations had no impact on the time appear of shoot, shoot number, and root number. There was effect from both treatments on medium color, and growing of callus on the explants.
INVENTARISASI HAMA DAN PENYAKIT YANG BERASOSIASI PADA TALAS BENENG (Xanthosoma undipes K. Koch) DI KAWASAN GUNUNG KARANG KABUPATEN PANDEGLANG PROVINSI BANTEN Rusbana, Tubagus Bahtiar; Saylendra, Andree; Djumantara, Rafael
Jurnal Agroekoteknologi Vol 8, No 1 (2016)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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The objective of the research was to inventarize pests and diseases that associate with Xanthosoma undipes K. Koch at Mount Karang, Pandeglang, Banten Province. The research was conducted at field of Xanthosoma undipes K. Koch at Mount Karang and Biotechnology Laboratory of Untirta in Serang from May until July 2015. Samples of the Xanthosoma undipes K. Koch were choosen by purposive sampling methods from several points around Mount Karang. Several types of pests, predators, and diseases were found in the cultivation field of Xanthosoma undipes K. Koch. The pests were mantises, grasshoppers, snout beetles, long-horned grasshopper, big eyes dragonfly, ants, cockroaches, spiders, and butterflies. The predators including parasites were ants, flies, stone flies, and crickets. Two diseases were found i.e. leaf blight caused by Phytophtora colocasiae and sooty mold disease caused by Capnodium sp. The study also revealed that pests and diseases were also found in the storage process (post-harvest). Some warehouse pests such as pillbugs, ants and mites were found. The disease found were stem rot disease caused by Sclerotium rolfsii and soft rot caused by Lasiodiplodia theobromae.Keywords: Xanthosoma undipes K. Koch, Pest and diseases
PENGARUH LAMA PENYIMPANAN JAMUR Metarhizium anisopliae TERHADAP MORTALITAS ULAT GRAYAK (Spodoptera litura F.) DI LABORATORIUM Hastuti, Dewi; Rusbana, Tubagus Bahtiar; Hidayatullah, Djamaludin Noor
Jurnal Agroekoteknologi Vol 9, No 1 (2017)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/j.agrtek.v9i1.5041

Abstract

This research was aimed to know the effectiveness level of different storage time of the fungus Metarhizium anisopliae to armyworm at Laboratory. The research was conducted at BPTPH Region 1 Banten as a repository of biological agents Metarhizium anisopliae and Soil & Agroklimat Laboratory of Agriculture Faculty, Untirta. This research was carried out from October 2015 until February 2016. Environmental design used Randomized Block Design non factorial, with the treatment was storage time of biological agents Metharizium anispoliae that have three levels, i.e. the storage time for 1, 2 and 3 months. Four testing trials include mortality, LT50 test, conidia test, test the intensity of the attacked and describe the morphology of the fungus-infected larvae Metharizium anisopliae. These results showed that the storage time was highly significant in the mortality of Spodoptera litura Fabricius larvae. Provision storage 1 month-long treatment was the best treatment to kill the larvae of Spodoptera litura Fabricius were infected Metharizium anisopliae fungus than the treatment for 2 and 3 months of storage. In the mortality test, LT50 test and intensity test of attacked larvae of Spodoptera litura Fabricius treatment 1 month storage time showed the best results compared to other treatments. The test of conidia density, treatment of storage time 1 month gave showed the highest.Keywords: Spodoptera litura F., Metharizium anisopliae fungus, Larvae mortality