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BUANA SAINS

buanasains
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Published by Universitas Tribhuwana Tunggadewi

ISSN : 14121638 EISSN : 25275720 DOI : -

Core Subject : Science, Education,

Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics

BUANA SAINS p-ISSN : 1412-1638 | e-ISSN: 2527-5720 is a double-blind peer-reviewed, open-access journal, published by UNITRI PRESS. It publishes original and applied research in all areas of natural science. The Editorial goal is to provide a forum exchange and an interface between researchers and practitioners in any natural science related field.

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Articles 510 Documents

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MAKSIMALISASI KEUNTUNGAN PADA PRODUK OLAHAN UBI KAYU DENGAN MENGGUNAKAN LINIER PROGRAMMING METODE SIMPLEK Eri Yusnita Arvianti; Kusnia Rindi A.S
BUANA SAINS Vol 11, No 2 (2011)
Publisher : Universitas Tribhuwana Tunggadewi

Company cassava chips "dolphin" is one of the agro-industry that can compete with other agro-and agro-industries can increase sales of their products so they can get maximum benefit. So that could be done using linear programming is by using the simplex method. Based on the results obtained by the company gets the maximum profit of IDR 4.04 million/day within 1 week maximum profit of IDR 24.24 million in a month so the maximum profit of IDR 105,040,000,- and known to the optimal production of cassava chips cassava chips located on the sweet taste with the production of 950 kg/day. While for cassava chips savory flavors produce only 350 kg/day

MODIFIKASI APLIKASI BIOMASSA (BIOCHAR, PUPUK KANDANG DAN JERAMI JAGUNG) PADA PERTANAMAN UBI KAYU DI TANAH LEMPUNG BERPASIR (SANDY LOAM) LAHAN KERING LOMBOK UTARA Sukartono Sukartono; Suwardji Suwardji; Mulyati Mulyati; Baharuddin Baharuddin; Tejo Wulan
BUANA SAINS Vol 14, No 2 (2014)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/bs.v14i2.338

Improved management of dryland agriculture could be one strategy to increase cassava production in order to meet national demand particularly for food and bioetanol industry. A field experiment was carried out to evaluate the influence of biomass modification addition (biochar, cattle manure, and corn-straw) on the growth and yield of cassava grown on sandy soils of northern Lombok. The treatments tested were: without addition of organic biomas as control (M0); the straw was put in the lowest part of rhyzoshere, biochar in the middle and subsequently followed by manure mixed with soil on top (M1); biochar, cattle manure, straw were mixed thoroughly within rhyzosphre (M2); biochar and cattle manure were only mixed with soil (M3); the manure was put down in the bottom part of rhyzoshere, straw in the middle and subsequently followed by biochar mixed with soil on top (M4). Results of the research showed that modification of biomass addition (biochar, manure and corn-straw) within soil increased significantly the growth and yiled as a results of better nutrient retention compared to soil without organic addition. The yield was increased by 32 and 33% at M1 and M4 respectivelly and reached closed to 40% at treatments of both M2 and M3 (27 ton ha-1)

PENGARUH LIMBAH INDUSTRI AGAR-AGAR RUMPUT LAUT TERHADAP SIFAT KIMIA TANAH DAN PERTUMBUHAN TANAMAN JAGUNG PADA TANAH INCEPTISOL KECAMATAN PANDAAN PASURUAN Bambang Siswanto; Widowati Widowati
BUANA SAINS Vol 18, No 1 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Inceptisol is one type of land order that is widely spread in Indonesia. Its distribution reaches approximately 52.0 million hectares (Kasno, 2009). Inceptisol is widely used as an intensive farm because its management is less precise, then most Inceptisol fertility rate becomes low. This is often shown by soil acidity, organic matter content, and low nitrogen, to improve such properties one of which can use the addition of organic matter. The problem that often arises is the high cost of organic fertilizer. Seaweed industry waste is a source of organic material that has not been widely utilized. Of the total raw materials processed, there is 65 to 70 percent of industrial products produced by the seaweed industry waste every day (Mandela. 2010). Usually these side products are only left to accumulate at the landfill site. Seaweed industry waste has the potential to be used as a source of soil organic matter because the organic material content of products of seaweed industry reaches 6.4% (Afif, 2011). The addition of nutrients to the application of inorganic materials is considered as an alternative step in increasing crop productivity. Based on the description above, it is necessary to conduct research to utilize the waste of seaweed industry, to get high corn production in Inceptisol. The objectives of this research are: (1) To know the effect of seaweed industrial solid waste on soil chemical properties Inceptisol and (2) growth of maize. The research was conducted in the greenhouse, while for the analysis of soil samples and the waste of seaweed industry was conducted in soil chemistry and soil physics laboratory, Department of Soil Science, Faculty of Agriculture, Brawijaya Universities. The study was conducted from May to August 2016. The soil samples used in this study were taken from Kemirisewu village, Pandaan sub-district, Pasuruan district at a depth of 0-20 cm. The waste of seaweed gel plant is obtained from PT. HAKIKI DONARTA, Pandaan Sub-district, Pasuruan Regency. The basic fertilizers used are Urea, KCl, and TSP. Maize seeds used as indicator plants are hybrid varieties of BISI-2 maize. This study used Completely Randomized Design (RAL) with 4 (four) treatments and 3 (three) replications. Addition of solid waste of seaweed with the dosage of 15 Mg/ha, increased of soil acidity and C-Organic content, besides also can increase Phosphorus and Potassium content available, Nitrogen, Phosphorus, and Potassium plant uptake, and the best growth of maize.

ANALISIS SOSIAL EKONOMI PERANAN PEREMPUAN PEDESAAN DI DALAM KELUARGA DAN MASYARAKAT Dina Novia Priminingtyas
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

This an explanatory research was aimed to describe roles of rural women eithin family and society at Mangunrejo village of Kepanjen District, Malang Regency. The Multiple Linear Regression Analysis showed that education and working time strongly vorrelated to. women’s income. Averages of women’s income contributed to 48,22% and single mother was able to gain 100%. It means that women’s income is not only secondary income but also primary income. Family has held importance key role to defence social stability, include women’s role in family, career and social activity. Women have to adaptate with their social environment to carry out their roles in family and social community to raise the family’s capital. Women’s roles are able to integrate to their hearth and behavior

PROSPEK PENGELOLAAN HUTAN BERBASIS MASYARAKAT PADA TAMAN NASIONAL SEBANGAU MELALUI USAHA PENGEMBANGAN TANAMAN JELUTUNG (DYERA LOWII) Mintarjo Mintarjo; Setni Betlina
BUANA SAINS Vol 6, No 2 (2006)
Publisher : Universitas Tribhuwana Tunggadewi

Area of Sebangau National Park in Central Kalimantan is almost entirely peat bog forest with peat depth varies from shallow to very deep peat of more than 20 m depth. Jelutung tree is an endemic plant found in the area of Sebangau National Pak. This tree is very suitable to be developed at buffer zone and special zone (rehabilitation/community empowerment). This study was aimed to elucidate prospect and farming contribution of jelutung tree development to supporting operational cost of the Sebangau National Park. This study was conducted at villages nearby Sebangau National Park, i.e. Kereng Bengkirai Village of Sebangau District and Habaring Hurung Village of Bukit Batu District of Palangka Raya. Farming feasibility of jelutung tree was analyzed through Benefit Cost Ratio (BC Ratio), Net Present Value (NPV), and Internal Rate of Return (IRR) approaches. Results of the study showed that BC ratio value of jelutung tree for one farming cycle = 2,89, NPV = Rp. 154.315.338.168 and IRR = 24,22 %. Development of jelutung tree at buffer zone of Sebangau National Park would provide per capita income of Rp. 3.804.000. Development of jelutung tree at special zone of Sebangau National Park (rehabilitation/community empowerment) at an area of ± 750 Ha through community-based forest management model and resulted share of 50 % for Sebangau National Park Board and 50 % for community can meet operational cost for self-sufficient management of Sebagau National Park about Rp.5 bilions/year

RESPONS ENAM VARIETAS JAMUR TIRAM PUTIH TERHADAP PERTUMBUHAN, HASIL, DAN KUALITAS DIBUDIDAYAKAN MUSIM KEMARAU DAN HUJAN Etty Sumiati; Deden Fathullah; Rahmat Sutarya
BUANA SAINS Vol 14, No 2 (2014)
Publisher : Universitas Tribhuwana Tunggadewi

Oyster mushroom was a prospective vegetable commodity, potential, and has high economical value. In fact, at the level farmers the average yield is still low in general. The goal of these research activities were to find out oyster mushroom varieties that could be adapted in Bogor-West Java, produced high yield and qualities when cultivated both in the dry and rainy seasons (all the year round). A Randomized Block Design with 4 replications were set up in mushroom houses during the dry and the rainy seasons. Treatments comprised of 6 varieties of oyster mushrooms, viz: varieties No. 1; 30; 37; 38; 46 (origin from IVEGRI`s collection; and no. 85 (origin from Bogor as control variety). Variable to be measured were: vegetative growth of mycelium inoculated on several kinds of growth media, oyster mushrooms yield and yield components, and their qualities as well (viz: storage resistance at ambient/room temperatures, mushrooms taste, and water content). Research results showed that oyster mushroom varieties No. 1, 30, 37, 38, 46, and 85 which were cultivated in dry and rainy season , gave the same high yield, viz: 91,08; 74,36; 78,70; 54,78; 78,91; and 81,40 tons per 1000 m2 of mushroom house area, respectively. Total productions of 6 varieties mentioned above, was higher than that of from cultivation in the rainy season (91,32 vs. 61,76 tons per 1000 m2 of mushroom house area, respectively. The qualities of those six oyster mushroom varieties were the same from cultivation activities all the year round (viz: delicious taste/ ranking: 2 days at room temperature, and water content> 90 %)

ANALISIS KELAYAKAN USAHA PENGOLAHAN SELAI NANGKA DITINJAU DARI JENIS DAN KONSENTRASI BAHAN PEMBENTUK GEL Samsuri Tirtosastro; Sakunda Anggarini
BUANA SAINS Vol 7, No 1 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

The aims of this research were to elucidate the best concentration of gelling agents (carragenans, pectins, agaroses) for producing jackfruit jams with best chemical, physical and organoleptical characteristics, and the financial aspects of the best jackfruit jam production. Six treatments of gelling agents addition of 0.5% and 0.6% agaroses; 0.3% and 0.5% pectins and 0.2% and 0.3% carragenans, were arranged in a randomized block design with three replicates. Analysis factors were performed for water content, texture, pH, syneresis and capability of performance and also organoleptics i.e. colours, texture and flavours. Results of this research showed that addition of 0.3% pectins produced best quality of jackfruits jams

PENENTUAN MASAK FISIOLOGIS DAN PELAPISAN LILIN SEBAGAI UPAYA MENGHAMBAT KERUSAKAN BUAH SALAK KULTIVAR GADING SELAMA PENYIMPANAN PADA SUHU RUANG Budi Santosa; Fauzia Hulopi
BUANA SAINS Vol 8, No 1 (2008)
Publisher : Universitas Tribhuwana Tunggadewi

The research aimed to determine the appropriate harvest age of Salak Gading fruit to get the best quality and the longest storage period as well as to find out the effect of wax coating to ward the storage period and the quality of Salak Gading fruit at room temperature. The fruit was obtained from salak plantation at Turi Yogyakarta area. The research was divided into two stages. The first stage was the determination of ripe physiology in which the fruit was harvested at 6, 7 and 8 months after pollination. Afterwards the physical and chemical natures of the fruit were observed. The second one was wax coating in which the coated Salak Gading fruit was harvested at 7 and 8 days after pollination. The wax concentration used was 10% then the observation on physical and chemical nature were undergone once in three days. The determination of the storage period was accomplished when Salak Gading fruit has reached the level of decaying by 25% during the storage period. The results indicated that the best quality was at the period of 7 months. The wax coating influencing the quality of Salak Gading fruit also could keep loss down resulted from bacteria and inhibited the reduction of sugar and tannin inside the fruit. The determination of the harvest age of Salak Gading fruit and the wax coating could reform the quality of Salak Gading fruit

PENGARUH BENTUK HUTAN KOTA TERHADAP KENYAMANAN TERMAL DI SEKITAR HUTAN KOTA Rizki Alfian; Tati Budiarti; Nizar Nasrullah
BUANA SAINS Vol 16, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi

Implementing urban forest in city’s planning is an effective and efficient ways to solve ecological problems, including Malang City. There are three urban forests in Malang City (1) Malabar; (2) Velodrome; and (3) Jalan Jakarta Urban Forest. On macro scale, urban forest expected to be as a microclimate function. Microclimate could affect the human thermal comfort. The aims of this study are (1) to identify density, frequence and dominance of vegetation, (2) to analyse the correlation between urban forest shape with urban environmental thermal comfort; and (2) to evaluate the community’s perception and preference related with urban forest’s comfort. This study was held in Malang City forests. The steps for this study were (1) preparation; (2) inventory and observation; (3) measuring the thermal components; and (4) social data. The results of this study were (1) Malang City urban forests has grouped, scattered, and striped shape with multiple strata; (2)there is a positive correlation between dominance factor with comfort; (3)Temperature analysis showed that distance was not affected the temperature significantly; (4) based on visitor’s perception, urban forests in Malang regarding as comfortable urban forest but to narrow; and(5) based on community perception and preference, they want the urban forests in Malang designed proportionally with more variety kind of plants.

KAJIAN PENINGKATAN PEMANFAATAN KOTORAN SAPI MENJADI BIOGAS DENGAN METODA SWOT DAN AHP DI DESA WANGUNSARI KECAMATAN LEMBANG P. Renosori
BUANA SAINS Vol 11, No 2 (2011)
Publisher : Universitas Tribhuwana Tunggadewi

At present there are 400 dairy cattles belonging to the people in Wangusari village. There is only 50% of the cattle manure used as organic fertilizer and that used as biogas is only 5%. An alternative strategy is thefore needed to improve utilization of the cattle manure. In this study, SWOT analysis was applied to evaluate new strategy and its implementation. Further evaluation of the alternative strategy was conducted using Analytical Hierrcy Procees (AHP). The result showed that there were three high values as follows: continuous supervision on farmer’s group, development of biogas installation to get more effective practices, and investation improvement to install biogas equipment

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