Claim Missing Document
Check
Articles

Found 24 Documents
Search

PENGARUH TUMPANGSARI TERHADAP PERTUMBUHAN DAN HASIL PANEN JARAK PAGAR (Jatropha curcas L.) HASIL REHABILITASI [The Effect of Intercropping on Growth and Yield of Rehabilitated of Physic nut (Jatropha curcas L.)] Mulyaningsih, Sri; Hariyono, Budi
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.500

Abstract

A research to study the effect of intercropping on rehabilitated of physic nut (Jatropha curcas L.) was conducted in Muktiharjo Research Station, Pati, Central of Java, from January to December 2010. Plant materials were physic nut rehabilitated by grafting of main branch with IP-2A (1 year old) and intercrops (peanut, soybean, mungbean and sesame). The experiment arranged in randomized block design with 6 replications. The treatments were: 1) intercropping peanut + physic nut, 2) intercropping soybean + physic nut, 3) intercropping mungbean + physic nut, 4) intercropping sesame + physic nut, and 5) physic nut monoculture. Plot size was 8 m x 8 m, plant distance of physic nut 2 m x 2 m, and plant distance for peanut, soybean and mungbean were 25 cm x 25 cm and sesame was 50 cm x 25 cm. The result showed that jatropha seed yield on intercropping physic nut with soybean (980.05 kg/ha) and mungbean (974.22 kg/ha) were not significantly different from physic nut monoculture (1,094.84 kg/ha). Crop that appropriate for intercropped with rehabilitated physic nut (second year) were soybean and mungbean.
PERTUMBUHAN DAN PRODUKSI JARAK PAGAR (Jatropha curcas L.; Euphorbiaceae) PADA TIGA TINGKAT POPULASI TANAMAN DI LAHAN KERING BERPASIR [Growth and production of physic nut (Jatropa curcas L.; Euphorbiaceae) on three population levels in the sandy upland areas] Mulyaningsih, Sri; Djumali, Djumali
BERITA BIOLOGI Vol 14, No 3 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i3.1830

Abstract

Seed production of Jatropha grown on dry land is very low. Productivity could be increased by increasing plant population size. This study aimed to obtain a plant population that was capable of supporting optimum growth and seed production on sandy upland. This research was conducted at the Asembagus Experimental Station, Situbondo, East Java from January to December 2012. The planting material used were seeds and cuttings. Three populations levels: (1) 2,500 plants ha-1 (2 m x 2 m), (2) 5,000 plants ha-1 (2 m x 1 m), and (3) 10,000 plants ha-1 (1 m x 1 m ) were arranged in a randomized block design with 5 replications. Destructive observations were made in each month to measure the dry weight of plants, shoot, root, leaf, and leaf area index.The production component were observed at harvesting time by measuring dry weight of fruit, fruit skin, seeds, 1000 fruits, and 1000 seeds. Data were analyzed by analysis of variance and LSD test of 5%. Results showed that the use of 10,000 plants ha-1 could increased dry weight of plants, shoots and roots by134.0-544.6%,125.9-549.4% and 167.8-693.3% respectively. They could also increased seed production by 77.5-178.2%.
PENGARUH KELEMBABAN TANAH TERHADAP KARAKTER AGRONOMI, HASIL RAJANGAN KERING DAN KADAR NIKOTIN TEMBAKAU (Nicotiana tabacum L; Solanaceae) TEMANGGUNG PADA TIGA JENIS TANAH [Soil Moisture Effects on Agronomic Characters, Yield and Nicotine Content of Temanggung Tobacco (Nicotiana tabacum L; Solanaceae) at Three Types of Soil] Djumali, Djumali; Mulyaningsih, Sri
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.105 KB) | DOI: 10.14203/beritabiologi.v13i1.648

Abstract

Research on the effect of soil moisture on agronomic characters, yield and nicotine content of Temanggung tobacco has been conducted in the Research Institute for Tobacco and Fibre Crops at Malang, East Java from March to October 2010. The treatment has been arranged in a Splitplot design with 3 replications. The experimental plot consisted of three types of soil: Complex Eutrudepts-Hapludalfs, Vitraquands, and Complex Dystrudepts-Hapludalfs. The subplot comprised 5 levels of soil moisturation: 60, 70, 80, 90, and 100% of field capacities. The results showed that the dry slice yield, content of nicotine, and agronomic characters of the Temanggung tobacco were affected by the result of interaction between soil moisture and type. The decreasing of soil moisture up to 40% from field capacity in the Complex Eutrudepts- Hapludalfs had decreased dry slice yield, nicotine content, plant height, root length, dry weight of plant, shoots, roots, stems, leaves, flowers, and suckers accounted for 54.3, 19.3, 33.7, 17.1, 74.1, 71.4, 82.3, 80.1, 54.3, 60.5 and 86.5% respectively, in the Vitraquands 72.7,20.2, 37.0, 13.2, 79.8, 78.5, 84.3, 80.7, 72.7, 63.3 and 87.8% respectively, and in the Complex Dystrudepts-Hapludalfs 74.2, 23.0, 39.6, 15.7, 79.3, 78.0, 83.6, 80.3, 74.2, 79.1 and 80.6% respectively.
PENGARUH SUMBER PUPUK ORGANIK TERHADAP PENAMPILAN TEBU (Saccharum officinarum L.) PADA TATA TANAMBARIS GANDA BENIH GANDA [Effect of Organic Fertilizer Resources on Sugarcane (Saccharum officinarum L.) Performances in Double Rows Double Seeds Planting Arrangement] Busro, Djumali; Mulyaningsih, Sri; Basuki, Teger
BERITA BIOLOGI Vol 17, No 1 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4072.501 KB) | DOI: 10.14203/beritabiologi.v17i1.2828

Abstract

Increased productivity of sugarcane in upland area can be done through the implementation of the integration of manure with a high dose of inorganic fertilizer in the double rows and twice plant populations of single row (“double rows double seeds”) planting arrangement. Limited availability of manure and inorganic fertilizer entails the replacement of manure with green manure fertilizer. The research was aimed to obtain a green manure as replacement manure that can be intercropped in the double rows double seeds planting arrangement. The experiment was done in the Asembagus Experimental Station, Situbondo, East Java on January to December 2014 for plant cane (PC) and from January to December 2015 for ratoon cane (RC). Treatments were arranged in a Randomized Block Design time for replication. The treatment includes (1) the four rows of Crotalaria juncea, (2) two rows of Crotalaria juncea, (3) four rows of peanuts in width between rows of sugar cane, (4) manure, and (5) no organic fertilizer. The results showed that the integration of organic fertilizer with a low dose of inorganic fertilizers increases productivity and sugar yield 5.20 to 41.78% and 33.33 to 69.90%, respectively in PC and 7.33 to 32.67% and 5.74 to 29.61%, respectively in RC from no organic fertilizer. Four rows of Crotalaria juncea could replace the role of manure in improving the productivity and sugar yield for PC and two rows of Crotalaria juncea for RC.
ANALISIS DISTRIBUSI KERUSAKAN AKIBAT GEMPABUMI 27 MEI 2006 MELALUI PENDEKATAN KEGUNUNGAPIAN DI DAERAH WONOLELO DAN SEKITARNYA, KABUPATEN BANTUL, DAERAH ISTIMEWA YOGYAKARTA Mulyaningsih, Sri; Husadani, Y T; Devi, L R; Irawan, S N
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 2 Februari 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1147.179 KB) | DOI: 10.34151/technoscientia.v1i2.405

Abstract

Northern Wonolelo area till Berbah was the areas with the most damaged generated by an earthquake of 27 May 2006. On the other hand, volcanic rocks within circular features characterize the areas. Palaeovolcanism had intensively deformed their lithology, generated normal faults and shear joints, in radial pattern with the axis of the vent. The earthquake force reactivated the existing faults and shears. Area with past central eruptions easier to deformed than the others. Volcanic-stratigraphy analyses found three periods of explosively volcanisms intersecting with composite volcanisms, created three escarpments separating each others. There fore, there were three zones of the most damaged areas according to the distributions of central eruptions; i.e Wonolelo and it vicinities, Sudimoro (Segoroyoso) and its vicinities, and Watuadeg-Senthong and its vicinities. Further subsurface research is necessary to verify the central of old volcano that caused the damages.
ANALISIS RESISTANSI PENTANAHAN SEBAGAI UPAYA UNTUK ANTISIPASI SAMBARAN PETIR DI DAERAH PERBUKITAN WILAYAH BANTUL Suyanto, Muhammad; Mulyaningsih, Sri
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 2 No 1 Agustus 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.36 KB) | DOI: 10.34151/technoscientia.v2i1.416

Abstract

The aim of this study was to find an information about varying soil resistant along residence area in Bantul Regency. The aim of the study is to compiling fixed grounding system. Factors controlling the grounding are ground resistivity, electrode resistivity, environmental condition, size and shape of the system. Ground resistivity needs a good grounding system, that accomplish to savety standard for people and its equipments. The ground system should be able to prevent dangerous caused by flash, whenever nuisance come out. It parposes to overcoming the current of ground system nuisance of electricity power, in order the power could be flowing to the ground, directly; not to the equipments. The resistivity data resulted from the field work measurements, shows some different va-lues in each place, that probably caused by different kinds of soils. For examples are re-gusol soil has a resistivity value of 22.05Ω, latosol 17.04Ω, and red mediteran 15.12Ω. Grumusol soil has resistivity of 7.8Ω, but after it’s analyzed by grounding with 4 electrode, the value is decrease into 4.22Ω. Those are caused by grumusol soil is clayy, while the other soils are sandy. Based of IEEE recomendation of ground resistivity values, home electricity should be <10Ω, while for flash protection should be < 5Ω. Up to now, the solu-tion for quenching the overload power, in order it’s unable to damage the equipments, it’s flowed to the ground directly.
AKTIVITAS VULKANISME EKSPLOSIF PENGHASIL FORMASI SEMILIR BAGIAN BAWAH DI DAERAH JETIS IMOGIRI Mulyaningsih, Sri; Husadani, Y T; Umboro, P A; Sanjoto, Siwi; Purnamawati, Dwi Indah
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 1 Agustus 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2186.868 KB) | DOI: 10.34151/technoscientia.v4i1.489

Abstract

The widely exposed of volcanic rocks within western part of Central Java-DIY Southern Mountain areas, indicates that volcanic activities had influenced geology of this area. Volcanic-stratigraphic study finds pumiceus rocks, tuff and co-ignimbrite breccias that can be described as primery volcanic rocks at study areas. Those volcanic rocks were erupted explosively followed by collapsing strato cone and forming new caldera. The associate of volcanic rocks with co-ignimbrite breccias, indicates that the central eruption was not far from the outcropes. Shallow intrusive rocks of andecites bearing hornblendes that exposed at the highest cone shape geomorphology of Gunung Gede, south to southwest Sudimoro, might be as the central eruptions.
PENGARUH KOMPOSISI LARUTAN TERHADAP KANDUNGAN Mo DALAM LAPISAN PADUAN Ni-Mo SECARA ELEKTROPLATING Mulyaningsih, Sri; Priyono, Budi
Metalurgi Vol 26, No 3 (2011): Metalurgi Vol. 26 No. 3 Desember 2011
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.081 KB) | DOI: 10.14203/metalurgi.v26i3.21

Abstract

Telah dilakuka n penelitian tentang pembuatan lapisan paduan Ni-Mo  yang akan digunakan sebagai lapisan bond coat untuk lapisan tahan temperatur tinggi (TBC). Penelitian dilakukan dengan menggunakan bahan dasar plat nikel 99% yang diroll dan dibentuk sampel berukuran 25 x 50 x 2 mm. Sampel kemudian diberi lapisan dengan  cara elektroplating  menggunakan  larutan  yang  terdiri dari NiSO4 , Na2MoO4 ,  C8H8O7. Komposisi larutan divarisikan menjadi 5 jenis larutan dengan perbandingan; I.  0,1 : 0,1: 0,1 mol, II. 0,075 : 0,125 : 0,1 mol, III. 0,050 : 0,100 ,0,1 mol, IV. 0,025 : 0,125: 0,1 moll dan V. 0,001 : 0,2 : 0,1 mol. Proses dilakukan pada suhu ruang dengan rapt arus 0,1 A/dm2. Dari hasil percobaan diperoleh bahwa larutan III menghasilkan lapisan dengan kadar Mo terbaik yaitu 21,19%. AbstractThere has been done the experiment about electro deposition Ni-Mo alloy as a bond coat layer for high temperature resistance coating, known as Thermal barrier coating (TBC). The sample is made from Nickel 99%. Roll process was done to thinning the samples and then cut the material into 25 x 50 x 2 mm shape. Electroplating process was done on the surface of materials by mixed NiSO4, Na2MoO4 and C8H8O7 for the solution. Electroplating process was carried out at 0,1-0,6 A/dm2 at room temperature. Composition of the solution was varied within I. 0,1 : 0,1: 0,1 mol, II. 0,075 : 0,125 : 0,1 mol, III. 0,050 : 0,100 , 0,1 mol, IV. 0,025 : 0,125: 0,1 moll and V. 0,001 : 0,2 : 0,1 mol. The best Mo content from the experiment is NiMo coating from solution III, it was 21,19 %.
Efforts on Geological Conservation to Watuadeg-Basalt Pillow Lavas at West Sumber, Berbah District, Sleman Regency, Yogyakarta Special Region-Indonesia Faizal, Mohamad; Arisandy, Rydo Faisal; Tatawu, Ariel l Afrandi; Wijaksono, Shandi Hargian; Alansa, Frando Ryan; Arifin, Muhammad Nur; Mulyaningsih, Sri
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 3 (2018): JGEET Vol 03 No 03 : September (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1352.764 KB) | DOI: 10.24273/jgeet.2018.3.3.2035

Abstract

Site of Berbah pillow lavas is an important geological heritage that is currently as one of the main tourism destination area located in Yogyakarta Special Region, Indonesia. It has a unique appearence of pillow structures with diameters of 0.5-1.0 m and the flow length of 2-5m. This site is used to visited by students and earth researchers becouse of its unique geological history. This study was approached with geotourism and geoconservation points of view. The research method uses qualitatively field geological observations. Data analysis was carried out by assessing the feasibility study of the geological conditions that had been produced in relation to the development of educational toursm. In its condition, this site suffered damage to the development impacts in the surrounding area and was once an object of agate mining so that its condition was increasingly not maintained. In order to maintain this site and become a protected geological site, there must be seriousness of various parties in an effort to map the geological conditions of the pillow lava complex, an important role that geologists have to inform and disseminate to all stakeholders and local residents to be able to independently manage the potential of geotourism. In addition, it also needs the commitment of the local government in protecting the pillow lava object and fighting for it to become a protected geological reserve.
PENGARUH AKTIVITAS BELAJAR SISWA TERHADAP PEMAHAMAN KONSEP MATEMATIKA PADA SISWA KELAS VII SMP NEGERI 5 KEBUMEN Mulyaningsih, Sri
EKUIVALEN - Pendidikan Matematika Vol 18, No 1 (2015): EKUIVALEN
Publisher : Universitas Muhammadiyah Purworejo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (101.668 KB)

Abstract

Penelitian ini bertujuan untuk mengetahui apakah aktivitas belajar siswa berpengaruh positif dan signifikan terhadap pemahaman konsep matematika dan besar pengaruhnya pada siswa kelas VII SMP Negeri 5 Kebumen Tahun Pelajaran 2014/2015. Populasi pada penelitian ini siswa kelas VII sebanyak 192 siswa dan diambil sampel 2 kelas yaitu kelas VII-C dan VII-E sebanyak 62 siswa menggunakan teknik simpel random sampling. Instrumen pengumpulan data menggunakan metode angket untuk memperoleh data tentang aktivitas belajar siswa dan tes untuk memperoleh data pemahaman konsep matematika yang masing-masing sudah diujicobakan dan telah memenuhi syarat validitas dan reliabilitas. Analisis data awal menggunakan uji keseimbangan dengan data nilai ulangan tengah semester 1 (UTS) dengan uji prasyarat normalitas dan homogenitas. Analisis data akhir menggunakan analisis regresi linear sederhana. Hasil penelitian menunjukkan terdapat pengaruh positif dan signifikan antara aktivitas belajar siswa terhadap pemahaman konsep matematika pada siswa kelas VII SMP Negeri 2 Kebumen Tahun Pelajaran 2014/2015.   Kata kunci: aktivitas belajar, pemahaman konsep, matematika