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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
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PENGARUH MIKORIZA ARBUSKULA DAN PUPUK FOSFAT TERHADAP PERTUMBUHAN JAMBU MENTE PADA TANAH PODSOLIK MERAH KUNING Trisilawati, Octivia; Supriatun, Titin; Indrawati, Ida
JURNAL BIOLOGI INDONESIA Vol 3, No 2 (2001): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i2.3476

Abstract

ABSTRACTEffect of Arbuscular Mycorrhizae Fungi and Phosphate Fertilizer to the Growth of Cashew on Red Yellow Podzolic Soil. The research about the effect of arbuscular mycorrhizae (AM) fungi and phosphate fertilizer applications to the growth of cashew seedling (Anacardium occidentale L.) grown on the red yellow podzolic soil was conducted in the green house at Cimanggu Research Installation, Research Institute for Spice and Medicinal Crops, Bogor. Completelly randomized design with factorial pattern, two factors and three replications was used. First factor was AM inoculation consisted of: without AM, Glomus etunicatum, Mycofer, whether second factor was phosphate fertilizer level consisted of: 0, 15, 30, and 45 g P2O5 per plant. The result showed an interaction between AM and phosphate fertilizer levels to the plant height, leaves dry weight, and spore population, and the best result on giving mycofer with P level 30 g P2O5/plant. AM inoculation significantly effected plant height, stem diameter, dry weight of leaves, stem and root, percentage of AM infection, and spore population, whether phosphate application significantly effected all of the parameters.Key words : Arbuscular mycorrhizae, phosphate, Anacardium occidentale L., plant growth
PENGARUH PEMBERIAN KOMPOS DAN PUPUK HAYATI TERHADAP AKTIVITAS FOSFATASE DAN UREASE PADA TANAH YANG DITANAMI BROKOLI (BRASSICA OLERACEA L.) Rahmansyah, Maman; Antonius, Sarjiya
JURNAL BIOLOGI INDONESIA Vol 11, No 1 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i1.2163

Abstract

Organic farming basically work on improving organic soil substrate which give impact to plant growth promoting bacteria. On the other hand, the use of agrochemicals leave chemical residues in the soil. In an effort to get the quality of organic matter and selected microbes as a biofertilizer material, this research had been done. Half ripe composting (HRC) process of organic substrate was utilized to enrich soil containing agrochemical residue, while ripe compost (RC) substance amended to soil free residue. That compost was used in broccoli cultivation. Microbial degrading pesticide was added to compost as biofertilizer formula. Even though plant biomass and the yield of flower was unclearly affected, but moreover the HRC application as due to â??semi-on-site-compostingâ? practices in soil containing agrochemical residue would cut off compost processing time. Soil microbial activity measured through soil respiration, urease and phosphomonoesterase indicated that the value was lower in samples collected from the soil free residue compared with soils containing residues. Utilization of chicken manure resulted in the availability of high nitrogen compounds and causing imbalance absorption by plants, compared with the use of HRC and RC in this study. Keywords: soil respiration, phosphatase, urease, Brassica oleracea L. 
BENTUK SEL EPIDERMIS, TIPE DAN INDEKS STOMATA 5 GENOTIPE KEDELAI PADA TINGKAT NAUNGAN BERBEDA Sundari, Titik; Atmaja, Rahmat Priya
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i1.3129

Abstract

ABSTRACTShape of Epidermal Cells, Type and Stomata Index of 5 Soybean Genotypes at Different Levelsof Shading. This study aimed to determine the shape of epidermal cells, type of stomata andthe stomatal index of five soybean genotypes at different levels of shading. Research conductedat the Screen House of Indonesian Legumes and Tuber Crops Research Institute in Marchuntil July 2007. Split plot design with repeated three times was used in this research. The mainplots were four levels of shading (0%, 25%, 50% and 75%) and subplot is the five soybeangenotypes (Pangrango, Tanggamus, Wilis, Lokon and IAC-100). Shading is used black screen.Plants fertilized with the 50 kg Urea + 100 kg SP36 75 + 75 kg KCl / ha. Fertilizing done atplanting time. The results showed that shade does not change shape of epidermal cell andstomata types of five soybean genotypes. Differences in stomatal index was not determinedby interaction of genotypes with levels of shading, but by the differences in shade andgenotype. Shading treatment increased stomatal index of soybean abaxial leaf surface. HighestSomatal index of soybean abaxial leaf surface is achieved by IAC 100 and the lowest is achievedby Wilis. Wilis is a genotype that can be adapted to the shaded environment, by maintainingleaf area, number of epidermial cells and stomata, stomatal index, and seed weight.Key words : soybean, shading, epidermis and stoma
EFEKTIVITAS ASOSIASI INOKULAN CAMPURAN BAKTERI RHIZOSFER DENGAN TANAMAN JAGUNG VARIETAS SRIKANDI PADS TANAH LATOSOL LAMPUNG Gandanegara, S.; Sugoro, I.; Slamet, S.
JURNAL BIOLOGI INDONESIA Vol 3, No 4 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i4.3322

Abstract

ABSTRACTThe Effectiveness of Rhizospheric Bacteria Mix Inoculant Associated with Maizein Latosol Lampuog Soil. Two greenhouse experiments were carried out to evaluate theeffectiveness of Plant Growth Promoting Rhizobacteria (PGPR) ino-culants on plant growthof maize. In the first experiments, eleven single isolates were screened for associationeffectiveness with maize. Inoculation improved plant perfomance by increasing roots, shootsand total plant dry weight. Five isolates with the increase of plant dry weight ranging from 27-47% over control were then selected for mixed inoculants. In the second experiment, tenmixed inoculants consisted of 3 single isolates were evaluated on plant growth, N plant yield,and N derived from fertilizer and contribution from fixation. The later parameter was.determined by "N method. Three mixed inoculants namely M5, M8, and M9 showed highereffectiveness with the increase of plant weight 27-29% over control. Plant N yield of plantsinoculated with those mixed inoculants were 176-194 mg N/pot as compared to 144 mg Nlpotin control plants. Lower '%eIx cess atom % in inoculated plants indicated some Ncontribution from fixation which ranged from 1 5 -2 1 %.Key words : mixed inoculants, '% method, maize, latosol
FLUKS BENTIK DAN POTENSI AKTIVITAS BAKTERI TERKAIT SIKLUS NITROGEN DI SEDIMEN PERAIRAN MANGROVE PULAU DUA, BANTEN Iswantari, Aliati; Wardiatno, Yusli; Pratiwi, Niken T.M; Rusmana, Iman
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i1.336

Abstract

Mangrove ecosystem has important role as source of nutrient particularly nitrogen in coastal area. Nitrogen (N) is alimiting factor in marine and coastal area. The aim of this research was to study benthic fluxes and potency ofbacterial activity in sediment of mangroves area, related to nitrogen cycle. This research was conducted in floodedmangroves area in Pulau Dua. The sediment and overlying water was sampled using sediment core sampler.Experimental treatment for flux analysis and sediment-slurry were conducted in three hours. Nutrient of NH3-N,NO2-N, and NO3-N and abundance of nitrifier, denitrifier, DNRA, and ammonifier were analyzed. The resultsshowed that the abundance of anaerobic bacteria was higher than aerobic bacteria. The dominance of bacterialgroups found in sediment was ammonification bacteria. The highest nutrient concentration in sediment was NH3-N. Benthic fluxes value showed higher NH3-N tends to release from the sediment to water than NO2-N and NO3-N. Generally, mangrove sediment in Pulau Dua has higher potency ofbacterial activity (Vmax and Km) in NO3reduction by anaerobic bacteria than NH3 oxidation by aerobic bacteria.Keywords: bacteria, benthic fluxes, mangrove, potency of bacterial activity, sediment
FLORISTIC AND FOREST STRUCTURAL STUDY IN BATANGTORU WATERSHED, NORTH SUMATRA Sambas, Edy Nasriadi; Siregar, Mustaid
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i1.3091

Abstract

ABSTRACTA Forest ecology research has been done in Batangtoru watershed, North Sumatra to determine the species composition and vegetation structure. The study was conducted by using plots in four locations: Purnama,Gerhana, Kejora, and Teluk Nauli. A total of 387 species in 184 genera and 77 families were found. The species richness of trees (dbh >10 cm) was 192 species in 116 genera and 55 families, the richness of saplings(dbh 2 - 10 cm) was 211 species in 111 genera and 55 families, while the richness of seedlings (dbh <2 cm) was 153 species in 95 genera and 50 families. Tree density ranged from 850?1,700 individuals/ ha, while basalarea was around 66.76 to 104.54 m2/ha. The forest canopy at Purnama and Gerhana plots was relatively similar, forming three layers, while the Kejora and Teluk Nauli plots were simpler with only two canopy layers. Basedon a principal components analysis of tree species, the forests in the research area tended to form three community types: 1) forest dominated by Pentaphylacaceae, 2) mixed dipterocarp forest, and 3) 'forest garden',or natural forest communities enriched with a variety of economically valuable forest tree species and therefore classified as an agroforestry system.Keywords : Floristic, structure, forest community type, Batangtoru watershed, North Sumatra
BAKTERI ESCHERICHIA COLI PADA BEBERAPA SUMUR PEUDUDUK DAN SUNGAI DI WILAYAH PASAR KRUI DAN DESA RAWAS, LAMPUNG BARAT Badjoeri, Muhammad
JURNAL BIOLOGI INDONESIA Vol 4, No 4 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i4.3252

Abstract

TULISAN PENDEKBakteri Escherichia coli pada Beberapa Sumur Peududuk dan Sungaidi Wilayah Pasar Krui dan Desa Rawas, Lampung Barat
HUTAN MANGROVE CAGAR ALAM PULAU SEMPU, JAWA TIMUR Suhardjono, Suhardjono
JURNAL BIOLOGI INDONESIA Vol 9, No 1 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i1.153

Abstract

Keanekaragaman jenis tumbuhan mangrove di Raâ??as, Air Tawar dan Teluk Semut, Pulau Sempu, Jawa Timurtercatat 30 jenis tumbuhan yang termasuk dalam 18 suku dan 24 marga. Dua belas jenis di antaranya termasukdalam Kriteria IUCN (Anonymous, 1997). Kenakearagaman jenis yang paling tinggi di Raâ??as (23 jenis), TelukSemut (17 jenis) dan Air Tawar (16 jenis). Hutan mangrove di daerah ini didominasi oleh Ceriops tagal, Rhizophoraapiculata, R. mucronata, Aegiceras corniculatum, Xylocarpus granatum dan Excoecaria agallocha.Kata kunci : Mangrove, Raâ??as, Air Tawar, Teluk Semut, Pulau Sempu, Jawa Timur, IUCN.
PERTUMBUHAN BAKTERI HASIL ISOLASI DARI TANAH PERKEBUNAN YANG TUMBUH PADA MEDIA MENGANDUNG PESTISIDA PROPOKSUR DAN KARBARIL Imamuddin, Hartati; Laili, Nur; Rahmansyah, Maman
JURNAL BIOLOGI INDONESIA Vol 8, No 2 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i2.3054

Abstract

Growth Capacity of Soil Bacteria Isolates Obtained from Estate Area from Media Containing Propoxur and Carbaryl. Isolation actions have been carried out with three soil samples derived from soil estate of pine apple, sugar cane, and banana in Lampung area, Southern Sumatra. The isolates were grown in the selected media containing carbaryl insecticide, and herbicide of diuron and bromocyl. The highest and vigorous growth isolates have gathered from threedifferent soil samples, and subsequently named GGPC, GM, and NTF isolates. Furthermore, those isolates were studied through the growth rate in the media containing propoxur and carbaryl in the nutrient rich liquid (NB) and compared to limited mineral (MM). All of the isolates grew faster against pesticides in the liquid medium of NB compared to MM. High correlated value among parameters nurtured as due to bacterial population and those processes were not affected by media composition. The GM isolate showed similar pattern during propoxur decrease along with incubation even though the rate of pesticide elimination from the media was higher in the rich nutrient liquid media (NB) compared to MM.Keywords: microbe isolate, pesticide, propoxur, carbaryl
KARAKTERISASI ENZIM NITRIL HIDRATASE DAN AMIDASE DARI PSEUDOMONAS SP. BP3 DALAM BIOKONVERSI ADIPONITRIL MENJADI ASAM ADIPAT Sunarko, Bambang; Sulistinah, Nunik
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i2.3196

Abstract

ABSTRACTCharacterization of Nitrile Hydratase and Amidase of Pseudomonas sp BP3 in Bioconversionof Adiponitrile to Adipic Acid. Adipic acid is a commercially important compound, primarilyused as precursor for the production of nylon 6.6. It is also used for plasticizer, fibers, and foodadditive. Synthesis of adipic acid by chemical means requires large amount of energy andconcentrated acid. It also produces N2O as by product, which is very toxic and suspectedcauses depletion of the ozone layer. The purpose of this research was to study thebioconversion of adiponitrile by Pseudomonas sp. BP3 and to characterize the involved enzymesin the whole cell. Pseudomonas sp. BP3 was able to utilize adiponitrile as the sole source ofcarbon and nitrogen. It?s doubling time (td) and growth rate constant (?) during the growth inadiponitrile were 2 hours and 0.346/h, respectively. The optimum pH and temperature of nitrilehydratasewere pH 7.0 and 30°C, respectively, while those of amidase were pH 6 and 50°C.Vmax and Ks of nitrile hydratase were 8.3 nM/ml.min. and 55.56 mM, respectively, and ofamidase were 5,9 nM/ml.min and 50 mM. The rate of adiponitrile consumption was 0.245 mM/h and of adipic acid formation was 0.181 mM/h. The yield of bioconversion of adiponitrile andadipamide were about 50 % and 25%, respectively.Key words: Bioconversion, adiponitrile, adipic acid, Pseudomonas sp. BP3, nitrile hydratase,amidase

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