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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 9 Documents

Search results for , issue "Vol 18, No 2 (2018)" : 9 Documents clear

ANALISA RESIDU PESTISIDA DI WILAYAH MALANG DAN PENANGGULANGANYA UNTUK KEAMANAN PANGAN BUAH JERUK Astri Sumiati; Reza Prakoso Dwi Julianto
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

The use of pesticides is widely used in the production of citrus fruits for protection before and after harvest. The use of pesticides on a broad scale can pollute the environment and leave residues in plants and in plants such as fruit leaves and tubers. A survey was conducted to evaluate the level of pesticide residues in citrus fruits. The survey method is carried out by recording pesticide use by farmers and traders. The survey will be conducted in Dau, Batu and Poncokusumo Districts, Malang Regency by interviewing 10 farmers and 10 orange traders in each District. The Gas Cromatography method was carried out to measure the levels of pesticide residues tested at the Angler Biochemlab Laboratory, Surabaya. Descriptive analysis was used to analyze the levels of pesticide residues in citrus fruits then compared to the Maximum Residue Limit (BMR) through SNI 7313: 2008 quality standards on agricultural products. The residue levels of profenofos in farmer samples were found to be higher at 0.108 ppm compared to the sample from traders, namely 0.050 ppm at the Tegalweru village research site. In addition, traders in the village of Poncokusumo knew the imidaclroripid content was close to the maximum threshold of 0.040 ppm in farmer samples and 0.010 ppm in the merchant sample. Decreased levels of pesticide residues on food can be done with several approaches, namely physically and chemically. Reduction of pesticide residues in agricultural products can be done in several ways including by washing products with running water for several times or can also be done by soaking in water for one hour

UPAYA EFISIENSI DAN PENINGKATAN KETERSEDIAAN NITROGEN DALAM TANAH SERTA SERAPAN NITROGEN PADA TANAMAN PADI SAWAH ( Oryza sativa L.) Edi Tando
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Nutrients or nutrients are important factors for plant growth which can be likened to food substances for plants. One of the factors that support plants to grow and produce optimally is the availability of nutrients in sufficient quantities in the soil. The elements N, P and K, have a very important role in plant growth and production. The purpose of the preparation of the paper is to provide information about efforts to improve efficiency and availability of nitrogen in the soil and nitrogen uptake in lowland rice plants (Oryza sativa L.) Nitrogen has a role as a constituent of enzymes which plays a large role in plant metabolism but is relatively not available to plants. The efficiency of the use of Nitrogen (N) fertilizer in lowland rice can be maximized by way of 1) timely fertilization, 2) planting superior varieties that are responsive to the administration of Nitrogen (N), 3) improving cultivation techniques, 4) regulating the timing of Nitrogen fertilizer (N ) the right during the growing season with Leaf Color Chart (LCC) or Leaf Color Chart (BWD) and 5) NPK fertilization simultaneously. Efforts to increase the availability of nitrogen in the soil and uptake in wetland rice can be done by adding high-quality organic matter, the use of Azotobacter isolates as biological fertilizers to reduce the decrease in soil health due to the input of synthetic chemicals.

FERMENTASI BLOTONG LIMBAH PG. KREBET DAN RUMEN SAPI DALAM PRODUKSI BIOGAS Pramono Sasongko; Lorine Tantalu
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Sugar Cane Filter Cake (SGFC) is the sugar cane to sugar processing waste in Krebet Baru Sugar Factory. Utilization of this SGFC waste was limited for free soil or unprocessed fertilizer. Sugar cane filter cake is an organic waste which potential to be utilized into biogas. Biogas is anaerobic process product which consist methane as a major compound. Factors that influence biogas fermentation process were temperature, water content, fiber, total sugar and total concentration of methanogen bacteria inoculum. Natural source of methanogenic bacteria is in the contents of the cattle rumen. The aim of this study was to determine the characteristics of blotong and the effect of addition of cattle rumen on biogas fermentation from the SGFC of the Krebet Sugar Factory. The first stage of this research was Blotong characterization. The second stage was spontaneous fermentation with two treatment factors. The first factor was enhancing the contents of the cattle rumen (5%) and without the addition of cattle rumen (0%). The second factor is the fermentation time with 3 different levels (20, 25 and 30 days). The results were shown that blotong had water content, fiber content, and C / N ratio were 10.71%; 0.06%; and 17: , respectively. These results indicate the potential of the blotong as a raw material for biogas production. SGFC fermentation with the addition of 5% cattle rumen content was shown the best results compared to biogas production with pure SGFC. The highest volume and yield of biogas produced were obtained from the 30-day fermentation process with the results of 37,327 ml of gas and 746.5 x 10-6 m3/kg. All flame tests show positive results and are proven to produce blue flames.

ESTIMASI NILAI PEMULIAAN UKURAN TUBUH PADA PEJANTAN SAPI ACEH ( Bos indicus ) UMUR 550 HARI Widya Pintaka Bayu Putra; Hendra Saumar
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Body measurements are one of livestock selection criteria for breeds standardization. This research was carried out to select the best sire at BPTU-HPT Sapi Aceh Indrapuri through body measurements at 550 days of age. Records data of livestock from 2010-2013 were used in this study and consisted of chest girth (CG), withers height (WH) and body length (BL). The average of body measurements were 105.22+6.06 cm (CG), 88.42+4.37 cm (WH) and 83.03+4.74 cm (BL). The heritability (h2) estimation were ranged from medium (CG and WH) to high (BL) criteria. Higher of standard error (SE) than h2 values was indicated that the data in this study was less and the h2 values were not accurate. The cumulative breeding value (BV) of body measurements were reached from -3.69 (Sire: A.004) to +3.89 (Sire: P.0751). Ranking of sire based on BL were not accurate because of lower relative accuracy (RA) value than 1.00 in one of tested sires.

PENGARUH LAMA PENGOMPOSAN SERBUK GERGAJI KAYU JATI DAN DOSIS EM4 TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KUBIS BUNGA ( Brassica oleracea L . ) DATARAN RENDAH Sri Hariningsih Pratiwi; Retno Tri Purnamasari
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

This research was purposed to find out whether there was any significant correlation of the composting time of teak sawdust and EM4 dose on the growth and yield of lowland flower cabbage plants or not. This research was carried out at the Experimental Field of Universitas Merdeka Pasuruan (Sultan Agung Street), Pasuruan City at an altitude of 4 m-asl. This research used factorial Randomized Block Design (RBD) method consisted of two factors and repeated three times. The first factor was the length of composting (L) with L1: one month, L2: two months and L3: three months. The second factor was the dose of EM4 (D) with D1 : 10% EM4 dose, D2 : 20% EM4 dose and D3: 30% EM4 dose. Overall there were nine combinations of treatments. The results showed that there was 20% EM4 dose with a 2 months composting time yielded higher results on all observed parameters. Flower cabbage with a dose of 20% EM4 with composting time of 2 months produced fresh weight of 15.97 tons ha-1, at a dose of EM4 20% with a composting time of 1 month produced fresh weight 13.86 tons ha-1, while the lowest yield at dose of 20% EM4 with a composting time of 3 months produced fresh weight 9.79 tons ha-1.

PENAMPILAN PERTUMBUHAN DAN PRODUKSI LIMA VARIETAS BAWANG MERAH ( Allium ascalonicum ) DI KALIMANTAN BARAT Tietyk Kartinaty; Hartono Hartono; Serom Serom
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Introduction of high yielding varieties of red onion (Allium ascalonicum) is an effort that can be done to increase red onion production in West Kalimantan. This research aims to introduce new varieties that can adaptive for the conditions of the land in West Kalimantan in order to obtain location-specific varieties as well as to accelerate the deployment of red onion Agency for Agricultural Research and Development. The research was conducted from May to July 2014 at the Visitor BPTP Plots of West Kalimantan. Research using randomized block design with four replications. The varieties used are Katumi, Bima, Mentes, Pikatan and Manjung. Variables observed included: height of plant (cm), number of tillers (clumps), number of leaves (strands), bulbs diameter (mm), weight bulbs (g), production (tons / ha). The results showed that of the five varieties of onion were tested superior results achieved ranged from 6.11 to 9.37 tons / ha. The Varieties Bima and Katumi to give the highest production of 9.37 tons / ha and 9.09 tons / ha. Both of these varieties are recommended for development in West Kalimantan.

UPAYA MENINGKATKAN PRODUKSI TANAMAN TOMAT DENGAN APLIKASI GANDASIL B Astutik Astutik; Astri Sumiati
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

One of efforts to increase tomato plant productions can be done by fertilization. Gandasil B was one of leaf fertilizer which can be used to fill P of plant so that it can increase the plant production. However, so far it has not been used for tomato plants. Therefore, it needs to do a research in order to find out the concentration and fertilization period of Gandasil B to tomato production. The research was conducted in Lowokwaru Village, Malang on March to August 2012. The research consisted of 8 treatment combinations, they are K0P1 (without treatment), K1P2 (1g/l per 1 week), K2P1 (2g/l per 1 week), K3P1 (3g/l per 1 week), K0P2 (without treatment), K1P2 (1g/l per 2 weeks), K2P2 (2 g/l per 2 weeks), K3P2 (3 g/l per 2 weeks). Each treatment was repeated four times.The research results can be concluded that there is concenration interaction and fertilization period to plant height at the age of 14 and 49 days after planting, leaves amount at the age of 14, 21, 28, 35, and 42 after planting, flowers amount at the age of 49 days after planting, branches amount at the age of 49 days after planting, and fruits amount. However, partially fertilization period treatment affects at flowering time, flowers amount at the age of 28.35 and 42 days after planting, and fruits weight. The best plant of Gandasil B fertilization results 25.98 fruits/plant with total weight of 1.23 kg/plant

SEBARAN UNSUR HARA N, P, K DAN PH DALAM TANAH Bambang Siswanto
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Soil nutrient availability maps are needed to be used as a basis for managing fertilizer use, as well as soil acidity (pH) values. If the nutrient status of N, P, K and soil acidity is known, it is expected that the dosage of fertilization of each land can be done in accordance with thenutrient status. It can also reduce the cost of fertilization. This study aims to determine the factors of land affecting the distribution of nutrients N P K and soil pH. The research was conducted in Gugut Village, Rambipuji District, Jember from June to August 2016. The research was conducted by using free grid survey method with semi-detailed survey rate of 1: 25.000 scale. The distribution pattern of each nutrient status was analyzed by matrix method approach to find out the factors that most influence the distribution of nutrients N, P, K and pH. From the result of research, map of nutrient distribution of N, P, K is almost similar to the result of geological map overlay, landform, land use and altitude. According to Wilding and Drees (1983), the diversity of nutrient status can be due to differences in lithology / parent material, climate, erosion, biological influences, and hydrology. The N, P, K soil availability map only meets 32.76% of the elevation map section. Therefore, the temporal nutrient status mapping can not be generated based on existing land map units so it is advisable to use the rigid grid method. While soil pH maps are almost similar to overlays between geological maps, landforms, land use and climate.

STRATEGI BAURAN PEMASARAN DESA WISATA KAMPUNG EKOLOGI TEMAS DI KOTA BATU Ninin Khoirunnisa; A. Yusuf Kholil
BUANA SAINS Vol 18, No 2 (2018)
Publisher : Universitas Tribhuwana Tunggadewi

Marketing strategy is a plan that is done to be able to capture the market, using the 7 P Marketing Mix strategy. This study aims to 1) analyze internal and external factors in the development of the Kampung Ekologi Batu (KEB). 2) Analyzing the development strategy that must be implemented by the Kampung Ekologi Batu (KEB) in increasing tourist visits. 3) Analyzing the development strategy is the most effective way to increase tourist visits of the Kampung Ekologi Batu (KEB). The sample used in this study is divided into 2, namely: Purposive Sampling and Accidental Sampling. Pursposive Sampling consists of: Tourism Marketing Department at the Tourism Office, Head of Community Empowerment and Development of Temas Village, General Chair of Kampung Ekologi Batu (KEB), Chair of KEB Development, and Chair of Rw 06. Accidental Sampling taken by 30 visitors. The analysis used in this study used SWOT Analysis, IFE Matrix and EFE Matrix to produce IE Matrix strategies. The results of this study indicate that the Kampung Ekologi Batu (KEB) has used 7 P Marketing Mix (Product, price, place, promotion, People, Process and Physical Evidence) on the Internal KEB. The results of the IE Matrix obtained based on the weight and rating obtained from IFE and EFE indicate the position of the IE KEB Matrix in the Growing and Building area, which means that the business KEB is developing and has excellent potential to be able to increase tourism, and Analysis Results The most effective SWOT in the research is on the S-O strategy, namely: Improving service quality, package quality or products offered and maintaining the beauty and cleanliness of the Ecology Village and the beautiful environment.

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