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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 430 Documents

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PENGARUH PUPUK ORGANIK DAN PUPUK NPK TERHADAP pH DAN K-TERSEDIA TANAH SERTA SERAPAN-K, PERTUMBUHAN, DAN HASIL PADI SAWAH (Oryza sativa L ) Elizabeth Kaya
BUANA SAINS Vol 14, No 2 (2014)
Publisher : Universitas Tribhuwana Tunggadewi

Potassium absorbed by plants in large enough quantities, sometimes even larger than nitrogen. If the potassium in the soil and irrigation water that comes from not sufficient for growth, the plant will suffer from potassium deficiency and its production will be very low. The availability of K in the soil to be absorbed by plants is impportant to support optimal growth optimal and yield. The research aim to establish the pH and available-K soil, K-uptake and growth as well as the results of paddy (Oryza sativa L) due to the treatment of organic fertilizer and NPK fertilizer. The study was designed using a Randomized block design (RBD) 3 x 5 factorial with 3 replications. The first factor is the organic fertilizer (O) which consists of two levels, ie O0 without organic fertilizer, O1 3 tons ha-1 (6 kg plot-1) straw compost, and O2 3 tons ha-1 (6 kg plot-1) manure. The second factor is the NPK fertilizer (A) which consists of three levels, namely A0 without NPK fertilizer; A1 25% x the recommended dose (75 kg ha-1); A2 50% x the recommended dose (150 kg ha-1); A3 75% x the recommended dose (225 kg ha-1); and A4 100% x the recommended dose (300 kg ha-1). The results showed that combination of the organic fertilizer with NPK fertilizers can increase soil pH, the availability of potassium (K) of paddy soil, uptake of potassium (K), and the number of tillers per hill. Organic fertilizer can increase vegetative growth (plant height) and yield of rice plant ( number of grains per panicle, number of filled grains per panicle and milling dry grain weight yield ), whereas NPK fertilizer can independently increase the plant height. Combination dose of 3 tons of manure ha-1 and 300 kg NPK ha-1 in increasing soil pH by 6.00, straw compost dose combination of 3 tons ha-1 and 300 kg NPK ha-1 can increase K-available soil 35.60 ppm, potassium uptake of rice plants from 1.36 % to 2.20 %, and the number of tillers per hill of 23.10 became 33.13 tillers

PENDAPATAN USAHA PENGOLAHAN ROTAN IRIT DI DESA BUKIT LITI KECAMATAN KAHAYAN TENGAH KABUPATEN PULANG PISAU Asnah Asnah; Atak Rahen
BUANA SAINS Vol 7, No 1 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Post harvest technologies are needed to produce godd quality rattan. HoweverBut there are always barriers, especially in costs, skills, and emergency need of stuff, so its harvest is still in wet condition. The aim of this research is to learn costs, revenue, income and efficiency of irit rattan in Bukit Liti Village, Kahayan Tengah district, Pulang Pisau sub Province. The data which has been collected, is tabulated and analyzed with using statistics test analysis of farming, which is matched with research’s target. The result and analysis of this research is presented in tables and discussed with discriptive analysis

NILAI TAMBAH DAN PENYERAPAN TENAGA KERJA PADA INDUSTRI KECIL TEMPE DI DESA PANARUKAN KECAMATAN KEPANJEN KABUPATEN MALANG Wahyunindyawati Wahyunindyawati; Asnah Asnah
BUANA SAINS Vol 8, No 1 (2008)
Publisher : Universitas Tribhuwana Tunggadewi

The objective of this study were to analyze cost structure, added value and profit as well as absorption, incentives and labour share of tempe small scale industry. This study was conducted at a tempe production centre of Panarukan Village, Kepanjen District of Malang Regency. The analytical methods used were cost structure and added value analyses. Results of this study showed that for each process needed cost of more than Rp 181.000, that was dominated (90%) by variable costs. The net profit of each process was more than Rp 100.000. Conversion factor reached 2,86 and added value reached more than Rp 1.400 (added value ratio 21,44%), consisting profit of Rp 1.184,55/kg of row material (profit rate 54,46%) and labour incentive of Rp 218,01/kg of row material (labour share 14,86%). The labour absorption reached 1 MDE/process that was mostly family labour. Producer added value reached Rp 1.402/kg of row material, most of them as net profit and labour incentives

STUDI TEKNOLOGI DAN KELAYAKANUSAHA TAPE SINGKONG DI DESA KETANGI KECAMATAN KARANGPLOSO KABUPATEN MALANG Riyanto Djoko; Fauzia Hulopi; Hariadi Darmawan
BUANA SAINS Vol 16, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi

Mr. Wandi and Mr. Amari is a fermented cassava businesses in the rural Ketangi, Karangploso subdistrict, Malang regency are currently experiencing difficulties in maintaining and developing a business. This happens because of limited capital and limited marketing reach. Technology production is still modest, less sterile and production equipment are just packed in a plastic bag or use a bowl.Appropriate technology improvement efforts of both businesses fermented cassava in the rural Ketangi be hygienic equipment that can guarantee the sterility of the product, use a wheelbarrow / tricycles can expand the reach of the marketing and use of packaging plastic boxes can improve the quality and value of selling the fermented cassava. Applied technology is a technology that is simple and easy to operate.The application of appropriate technology improvements can increase revenues both businesses fermented cassava approximately 35% to 50%, as well as the pilot for the surrounding community.

PENINGKATAN KUALITAS INFRASTRUKTUR JALAN PADA TANAH EKSPANSIF DENGAN PEMANFAATAN LIMBAH PERTANIAN GUNA MENDUKUNG PENGEMBANGAN WILAYAH G D. Pandulu; Suhudi Suhudi
BUANA SAINS Vol 12, No 1 (2012): Edisi Khusus
Publisher : Universitas Tribhuwana Tunggadewi

Soil with high variability of shrinkage is one of contributed factor on main constraints in road contruction Probolinggo region is one of the areas has those problem of road contruction , and to overcome the problem by using soil amandement as soil stability. The aims of this study was to determine soil in Probolinggo as shrinkage soil types or not by application of ash rice husk. Result showed that by soil physical determination soil strength 2.233 g/m3, water content 50,15%, wet bulk soil 1,61 g/m3, dry bulk 1,15 kN/m3, Liqiut Limit (LL) 86,5%, Plastic limit (PL) 39,8% and Plasticity limit (PI) 47,1%. In general high plasticity value of soil will be showed highly soil shrinkage. Ash of rice husk with containt of SiO2 90% can be used as soil stability, and to reduce value of plasticity limit to 37,68% is needed about 10% ash rice husk. For main body road of 1 km is needed 669 ton of ash rice husk from burning rice husk 3.345 ton , and rice husk from about 16.725 dry rice milling

PERBEDAAN KUALITAS TANAMAN JAGUNG BERCIRI BROWN MIDRIB RESISTANCE DARI DATARAN RENDAH DAN TINGGI DI WILAYAH YOGYAKARTA B. Suwignyo; B. Suhartanto; Dj. Soetrisno
BUANA SAINS Vol 12, No 1 (2012)
Publisher : Universitas Tribhuwana Tunggadewi

This study aimed to determine the difference quality of corn plants with brown midrib resistance characterized on low and high land of Yogyakarta Province. Development of farm world will always be followed by efforts to satisfy meet quality and sustainable food supply. Problems of tropical forage feed provision are not only the quantity but also quality and continuity. Lignifications is one of the limitation factor for forage that will affect to low digestibility level. Indonesia as a country that is located in the tropics actually have the potential of corn forage. There is a type of corn with brown color on the underside of leaves around the middle of the bone known as the brown midrib resistance (BMR) is the hallmark of corn plants that have low lignin content. BMR corn with these characteristics is genetic heredity. Nutritional quality analysis for corn plant have done at the Laboratory of Food Forage and Pastures Livestock Husbandry Faculty of the University of Gadjah Mada. Corn plant derived from the lowlands have the potential dry matter better in addition to trend lower lignin than corn from the highlands

KEMAMPUAN Azetobacter sp. DALAM MENINGKATKAN EFISIENSI PEMUPUKAN UREA PADA TANAMAN JAGUNG (Zea mays L.) Nur Winda Rachmadhani; Didik Hariyono; Mudji Santoso
BUANA SAINS Vol 18, No 1 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Azotobacter sp. is a non-symbiotic bacteria that has the ability to mobilize nitrogen from a form that is not available in a form that is available for plants. Inoculation of Azotobacter sp. into the planting medium can be used as a supplier of nitrogen required by the plant. Utilization of Azotobacter sp. as biofertilizer has the ability to minimize the use of chemical fertilizers, improve the soil fertility and increase the microbial activity in the rhizosphere of plants. Inoculation of Azotobacter sp. into the planting medium is one alternative to improve the efficiency of urea fertilizer in the maize cultivation. The result of this research showed that the application of Azotobacter sp. with the dose of 10 ml l-1 and 20 ml l-1 on the urea fertilization with the dose of 150 kg ha-1 were able to increase the growth of maize, so that maize has growth that was not significantly different with the maize that got urea with the dose of 225 kg ha-1 and 300 kg ha-1. Inoculation of Azotobacter sp. in the planting media, either with the dose of 10 ml l-1or 20 ml l-1were able to increase the maize yield when compared to the treatment without Azotobacter sp. Inoculation of Azotobacter sp. into the planting medium was able to increase the maize yield. However, increasing the dose of Azotobacter sp. more than 10 ml l-1 did not affect to increase the maize yield. Maize yield reached the optimum value when the dose of urea supplied was153.50 kg ha-1.

EVALUASI KAPASITAS SALURAN GUNA MENANGANI MASALAH BANJIR DI JALAN BENDUNGAN SUTAMI KOTA MALANG Suhudi Suhudi
BUANA SAINS Vol 7, No 2 (2007)
Publisher : Universitas Tribhuwana Tunggadewi

Pond that happened in Bendungan Sutami Street Malang City reached height of ± 50 cm and duration of the pond was ± 60 minutes. This condition resulted in broken traffic band and people took a longer other band. One of the generated impact of the existence of the pond was the damage on hard surface of the street. The final goal of this activity was in order that drainage network system can perform well in a long time according to the plan so that it can endure evaluated from construction facet and its function. The method used was by analysing flood discharge that happened (Qa) 0,3638 m3/s and channel capacity existing (Qke) 0,1268 m3/s, hereinafter evaluated and its result was that the existing channel is unable to conduct water well. The evaluation of channel capacity in handling the problem of flood can be conducted by dimension repeat channel. Dimension of channel plan in the form of square made from concrete coat with the width of channel base is (b) 0,35 m and the height of water surface is (h) 0,5 m, obtained plan channel capacity (Qkr) 0,3955 m3/s. Final result of analysis showed Qa < Qkr, the flood will not happen and capacity control (∆Q) = 8,7%

KAJIAN KOMPOSISI KIMIA AMPAS KEDELAI HASIL SAMPING PENGOLAHAN KECAP Sri Susanti
BUANA SAINS Vol 6, No 1 (2006)
Publisher : Universitas Tribhuwana Tunggadewi

The research was conducted from May-June 2004 at the Ketchup “Kinking” Factory Turban regency. The aim of the research was to study of food substance content or soy dregs chemical composition from two methods of ketchup making. Method used in this research was a case study. Soy dregs from two methods of ketchup making, i.e. fermentation (F) and sangria (S) were used in this research. Proximate analysis was conducted at the Laboratory of Animal Feed and Nutrition, Animal Husbandry Faculty, Brawijaya University Malang, and amino acid analysis was conducted at the Laboratory of Food Processing Balitbangtan, Bogor Regency. The results showed that the soy dregs from fermentation method (F) had a greater composition than that of sangrai method (S), with a complete amino acid content. So that, the soy dregs from fermentation method performed a good feed source for avian and non ruminant animals

STUDI KELAYAKAN FINANSIAL PENGOLAHAN LIMBAH CAIR TAPIOKA SEBAGAI NATA DE CASSAVA Dianawati Dianawati; Widowati Widowati
BUANA SAINS Vol 9, No 1 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

Tapioca industries produced liquid waste containing substantial amount of starch that can be used as a source of carbon. Considering its relatively high carbon content, the liquid waste of tapioca production can be used as a raw material of nata de cassava. This study was aimed to elucidate financial feasibility of nata de cassava production at PT Sumber Timur, Dampit, Malang. The financial feasibility parameters included Break Even Point, Payback Period, RCR, Net BCR, Net Present Value and Internal Rate of Return. The information and assumptions for financial analysis were: liquid waste of tapioca was about 500 l/day, 1 kg cassava pulp produced 8,27 l liquid waste, from 500 kg fermented liquid waste of tapioca, taken 50 kg for starter, rendement = 99,54%, lifetime of the factory was 10 years, Price was increased 4%/ years started from third years, product was sold 100% from 1st - 10th years, production cost was increased 4%/ years started from third years. Results of this study indicated that production capacity for 1 year was 179.160,00 kg, the price was Rp. 1.112,21/ kg, production of nata de cassava from liquid waste of tapioca was financially feasible with NPV (18%)=Rp. 130.082.978,55, BEP = 26.015,29 kg or Rp. 28.934.382,83 or 15%; IRR 37%, Payback Period 4,14 years, Net BCR 1,02 and RCR 1,56

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