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Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

Articles 17 Documents

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Search results for , issue "Vol 16, No 3 (2013): Widyariset" : 17 Documents clear

COMMUNITY OF PHYTOPLANKTON AT KARIMUNJAWA NATIONAL PARK, JEPARA, CENTRAL JAVA Arip Rahman; Mujiyanto Mujiyanto
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Karimunjawa National Park is one of nature conservation area in Jepara Regency. The development of the tourism sector in the region will affect the condition of waters. The research aimed to determine community of phytoplankton in the waters Karimunjawa. The study was conducted in April, July, October, and November 2012 with field survey. Phytoplankton samples were taken using plankton net from four locations which purposively chosen. Water quality parameters were recorded including temperature, salinity, dissolved oxygen, and nutrient. The result indicated that there were 34 species of phytoplankton which grouped into two classes, Bacillariophyceae and Diniphyceae. Diversity index ranging 0.89 and 2.3, equitability index ranging 0.67 and 0.99 and dominance index ranging 0.09 and 0.46. Based on criteria of biological indices and analysis of water quality, the condition of the waters in National Parks Karimunjawa is stable moderate. During the research does not happen certain phytoplankton species dominance.

YIELD COMPONENT PERFORMANCE AND PRODUCTIVITY OF RICE INPARI 13 VARIETIES IN VARIOUS PLANTING SYSTEM Yuti Giamerti; Zuraida Yursak
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The purpose of this research is to know yield components performance and productivity of Inpari 13 varieties’s rice in planting systems of jajar legowo 2:1, legowo 4:1 and tegel. The rice was planted at 3 hectares of farmers’rainfed area in Mauk regency of Tangerang district. This location was a demfarm of SLPTT Banten Assesment Institute for Agricultural Technology. This research was held from April to August 2011. Planting system of jajar legowo 2:1, Legowo 4:1 and tegel compared yield components variable and of Inpari 13 varieties’s rice. The results showed that Inpari 13 varieties’s rice growed more optimal and had high productivity with planting systems of legowo 2:1(6,57 ton/ha) then legowo 4:1 (5,57 ton/ha) and tegel (5,09 ton/ha).

FACILE PHOTOMETRIC DETERMINATION OF SILVER WITH 2,4,5,7-TETRAIODOFLUORESCEIN STABILIZED WITH STARCH Erik Prasetyo
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Simple photometric determination of silver was developped. The determination incorporated 2,4,5,7-tetraiodofluorescein (erythrosine) as chromogenic reagent to form positive colloid with silver ion, not ion associate as initially assume. The colloid was then stabilized with starch and this ternary system erythrosine-silver-starch was applied as basis in determination of trace amount of silver (0–6 µg/ml). The developped method was successfully applied to determine silver in three synthetic samples and came with accuracy > 96.87% after compared to atomic absorption spectrophotometry (AAS) results and reproducibility < 8.8%.

SIZE FRACTIONATION OF ZOOPLANKTON BIOMASS AND SPECIES COMPOSITION IN THE LAGOON OF PULAU PARI, SERIBU ISLANDS Reny Puspasari
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Zooplankton is the main prey of fish larvae. The match between fish larvae and its prey depends on the size and the composition of zooplankton. The study aims to investigate the biomass and species composition of zooplankton and their relationship to the environmental conditions in Pulau Pari Lagoon. Research was conducted from June to November 2010. Results showed that 63,9% of zooplankton biomass consisted of microzooplankton, dominated by the class of Crustacea with subclass of Copepoda, and 36,1% of zooplankton biomass consisted of mesozooplankton, dominated by the class of Crustaceasu with subclass of Malacostraca. The biomass peak occurred at the end of July indicating the highest food availability and this could support fish larve survival.

COMMUNITY OF INTRODUCED FISH IN LAKE BATUR, BALI Agus Arifin Sentosa; Danu Wijaya
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Lake Batur is the largest lake in Bali Island, however information on introduced fish community is not available yet. The research aimed to identify the community structure and ecological status of the introduced fish in Lake Batur, Bali. The study was carried out on May, July, and October 2011 using survey method. The fishes were obtained using experimental gill nets and by fishermen. Data analysis included index of diversity, dominance, and the abc (abundance-biomass comparison) curve. The results showed the tilapia (Oreochromis niloticus) was the dominant species. The status of introduced fish community suggested to ecological stress, but it was relatively undisturbed.

The Activity of residents in Belida River, are affecting water quality conditions, and the presence of organisms in it. One of the biota that has an important role in these waters is periphyton. The study aims to determine the abundance and diversity of periphyton in Belida river waters around District Muara Enim. A descriptive exploratory study was conducted from February to November 2011. The results recorded 36 genera of periphyton belong to three classes namely Bacillariophyceae, Chlorophyceae and Cyanophyceae. Diversity index (H ‘) ranged from 0.74 to 2.15. It is concluded that the diversity of periphyton in the waters of the River Belidawas low, with Ulotrik species, Nitzschia, and Synedra being the Dominant.

BIOLOGICAL ASPECTS OF BANANA SHRIMP (Penaeus Merguiensis DE HANN) IN THE PEMANGKAT WATERS, WEST BORNEO Duranta Diandria Kembaren
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Continuous fishing can threat the sustainability of shrimp resources. Studying of biological aspects can be used as a basic knowledge to manage shrimp responsible fisheries. Research about biological aspects of banana shrimp (Penaeus merguiensis) was conducted on April to December 2011 in Pemangkat waters, Sambas district. Data were collected from the fisherman landed in Pemangkat fishing port. Composition of male and female were an unequal in sex ratio. The shrimps was dominated by the size of 23 to 25 mm on carapace length. Individually, female carapace length was 30% longer than male. The growth characteristic was isometric in male and female. Spawning occurred all year around, and reach its peak on November. Carapace length at first capture of banana shrimp was 23,75 mm and carapace length at first maturity was 33,67 mm. Fishing pressure at this water was high and the capture dominated by the young shrimp. This condition threat the sustainability of shrimp fisheries.

EFFECT OF BIOFERTILIZER ON GROWTH AND NITROGEN UPTAKE OF SOYBEAN PLANTS (Glycine max. L.) VARIETIES MITANI AND ANJASMORO Taufiq Bachtiar; Setiyo Hadi Waluyo
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Application for Rhizobium in local farmers has to be developed to support sustainable agriculture. This research was conducted to determine the influence of Rhizobium as a biofertilizer on growth and Nitrogen (N) uptake of two varieties of soybean. The experiment was carried out from January to May 2011 in South Jakarta. Randomized Block Design (RBD) was used in this experiment with six treatments and four replicates. The treatments were: K0=uninoculated with biofertilizer without urea, K100=uninoculated but with urea 100% equal 75 kg/ha, SS=inoculated with single strain biofertizer without urea, MS= inoculated with multi strain biofertilizer without urea, SS+50 =inoculated single strain biofertilizer with 50% urea, MS+50= inoculated multi strain biofertilizer with urea 50%. The results showed that application of MS +50 gave the best result on plant height, N uptake, nodule number and dry shoot of soybean plant varieties Mitani. Application of SS +50 gave the best results on plant height, N uptake, nodule number, and dry shoot of soybean plants varieties Anjasmoro.

ADAPTATION STUDY OF SOME NEW SUPERIOR VARIETIES OF RICE IN DISTRICT OF SERAM BAGIAN TIMUR Wahid Wahid; Maryam Nurdin
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

This study was aimed to obtain at least 2–3 varieties which produce high quality and good adaptation in Maluku. The study was conducted in rice fields the village of Jakarta Baru, the Regency Seram Bagian Timur in 2011. The experiment was laid out in a Randomized Block Design with three replications and five treatments. Legowo model 4:1 with plant spacing of (20 cm x 10 cm) x 40 cm was used as a cropping system. The measured parameters consisted of plant height, number of productive tillers per hill, panicle length, number of grains per panicle, total grain weight (g)/hill, and the dry grain yields/hectare (ton/ha). Results showed that among five tested varieties, Inpari 13 has the highest production followed by Conde variety suggesting that both Inpari 13 and Conde varieties are promisingly varieties to be developed in the district of Seram Bagian Timur.

ANALYSIS OF CLIMATE ANOMALY IMPACT OF LA-NINA 2010 ON EXPERIMENT FIELD SEMBAWA RESEARCH CENTER, SOUTH SUMATERA Jamin Saputra
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

La-Nina is an unusual climate changes that occurs in several years. The effect of climate anomaly on rubber plantation is very influential on rubber production. This research aims as analysis of La-Nina 2010 effects on experiment field Sembawa Research Centre. This research was carried out in experiment field Sembawa Research Centre at 2011. Research was conducted by analyzing the impact of rainfall in 2009 and 2010 on the availability of seed, reduction of tapping days, and rubber crop productivity. The results showed that the presence of La-Nina climate anomalies resulted in the availability of seed decreased by 50% for rootstock breeding. In addition, rubber production in the clones are susceptible to Colletotrichum leaf fall disease is reduced. Furthermore, tapping days were reduced 9 days because of the high intensity of rainfall. On the contrary, La-Nina caused a time delay of leaf fall sesion, so it did not give negative impact on productivity of Experiment Field Sembawa Research Centre. Attempts to reduce the impact of La-Nina climate anomalies have been done by planting specific location rubber clones, using rain guard technology, and giving extra fertilizer on the plants which are suffered by leaf fall disease.

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Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

Phone
-

Journal Mail Official
widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location
Kab. bogor,

Jawa barat

INDONESIA