Articles

PERKECAMBAHAN BENIH PINANG PADA BERBAGAI CARA PENANGANAN BENIH DAN CAHAYA Mustika, Sri; Fathurrahman, Fathurrahman; Mahfudz, Mahfudz; Saleh, Muhammad Salim
AGROLAND Vol 17, No 2 (2010)
Publisher : AGROLAND

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The experiment was conducted to assess the influence of various seed handlings in light and without light.  Positive contribution in science and technology development is to increase effectiveness and efficiency of areca seed germination.  The experiment used a split plot design, with the main plot was light (with and without light) and seed handling as patch (seeds soaked in water for 2, 4, 6 days and seed wetted for 4, 6, 8 days).  Each treatment was replicated three times.  Data were analyzed using analysis of variance and 5% honestly significant difference. Dark condition accelerated areca seed germination (39.44% growth potential, 93.33% germination rate reached 90 days after planting and 63.33 days to germinate) and increased the number of root and shoot dry weight.
THE EFFECTS OF PRODUCT QUALITY, SERVICE QUALITY AND ATTRIBUTES RELATED TO SERVICE AS BRAND SWITCHING ANTICIPATION AND THEIR IMPLICATION ON CUSTOMERS’ SATISFACTION Hidayat, Arief; Soesanto, Harry; Mahfudz, Mahfudz
Jurnal Sains Pemasaran Indonesia (Indonesian Journal of Marketing Science) Vol 16, No 3 (2017): Desember
Publisher : Master of Management Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jspi.v16i3.203-220

Abstract

Utilization of clean sources of SWRO products, tank water, and groundwater which are processed by themselves into clean water become an indication of brand switching by a company in Nizam Zachman Ocean Fisheries Port area. Research literature conducted by researchers based on re-purchase decisions led researchers to develop five empirical hypotheses, namely service quality, attribute related to services, product quality, brand switching and customer satisfaction. Data on observed variables were obtained through an interview with a questionnaire to 108 at clean water customer of Indonesian Fisheries Public Company (Perum Perikanan Indonesia) within Ocean Fisheries Port of Nizam Zachman Jakarta and tested by using AMOS statistic software 21. The test result showed that Brand Switching is statistically proven to be influenced by Product Quality, Service Quality and Attributes Related To Service and Customers’ Satisfaction statistically proven to be influenced just by Service Quality while product quality and Brand Switching are not statistically proven influenced on Customer Satisfaction.
PENGARUH APLIKASI BERBAGAI JENIS INSEKTISIDA TERHADAP ULAT BAWANG (Spodoptera exigua Hubn) DAN PRODUKSI BAWANG MERAH VARIETAS BIMA DAN TINOMBO Shahabuddin, Shahabuddin; Mahfudz, Mahfudz
AGROLAND Vol 17, No 2 (2010)
Publisher : AGROLAND

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This study aimed to examine the effect of various insecticides against beet armyworm pest (S. exigua) and onion yield. The experiment were conducted in Poso district and arranged using a randomized block design (RBD) with two-factor treatment and tree replicates each. The first factor was the type of Insecticides (I) consists of three treatments and one control, namely: (1) No insecticides (I0), (2) botanical insecticides (neem leaf extract) 50 g/l of water (I1). (3) Biological insecticides, the fungus Beauveria bassiana 10 g/l of water (I2) and (4) chemical insecticides, Klensect 200 EC 1 ml/l of water (I3). The second factor was onion varieties composed of: (1) Bima (V1) and (2) Tinombo (V2) vartieties.  Variabel measured included: S.exigua population density, percentage of attacks of S.exigua, and dry weight of tuber.  The results showed that insecticides treatment significantly affected the population density and S.exigua attacks on onion crops in the district of Poso.  The effectiveness of chemical and botanical insecticides on suppressing the population density and the attack of S. exigua were nearly similar and significantly higher than that of biological insecticide.  The population density and percentage of S. exigua attacks did not differ significantly in both varieties but dry weight of tuber was higher in Bima variety. There was no interaction effect between insecticides and onion variety on population density and attack percentage of S. exigua as well as on tuber weight.
PENGARUH APLIKASI BERBAGAI JENIS INSEKTISIDA TERHADAP ULAT BAWANG (Spodoptera exigua Hubn) DAN PRODUKSI BAWANG MERAH VARIETAS BIMA DAN TINOMBO Shahab, Shahabuddin; Mahfudz, Mahfudz
AGROLAND Vol 17, No 2 (2010)
Publisher : AGROLAND

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Abstract

This study aimed to examine the effect of various insecticides against beet armyworm pest (S.exigua) and onion yield. The experiment were conducted in Poso district and arranged using arandomized block design (RBD) with two-factor treatment and tree replicates each. The first factorwas the type of Insecticides (I) consists of three treatments and one control, namely: (1) Noinsecticides (I0), (2) botanical insecticides (neem leaf extract) 50 g/l of water (I1). (3) Biologicalinsecticides, the fungus Beauveria bassiana 10 g/l of water (I2) and (4) chemical insecticides,Klensect 200 EC 1 ml/l of water (I3). The second factor was onion varieties composed of: (1) Bima(V1) and (2) Tinombo (V2) vartieties. Variabel measured included: S.exigua population density,percentage of attacks of S.exigua, and dry weight of tuber. The results showed that insecticidestreatment significantly affected the population density and S.exigua attacks on onion crops in thedistrict of Poso. The effectiveness of chemical and botanical insecticides on suppressing thepopulation density and the attack of S. exigua were nearly similar and significantly higher than thatof biological insecticide. The population density and percentage of S. exigua attacks did not differsignificantly in both varieties but dry weight of tuber was higher in Bima variety. There was nointeraction effect between insecticides and onion variety on population density and attackpercentage of S. exigua as well as on tuber weight.Key words: Insecticides, onion, S. exigua variety, and yield.
EFIKASI HERBISIDA KOMBINASI TETRIS DAN BASAGRAN TERHADAP GULMA UMUM PADA BUDIDAYA TANAMAN PADI SAWAH TABELA Mahfudz, Mahfudz; Guntoro, Dwi; Latifah, Dita Nurul
Agroland Vol 19, No 1 (2012)
Publisher : Agroland

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/J.24077607.2012.v19.i1.4293

Abstract

An experiment was carried out to investigate the efficacy of herbicide combinations between Tetris and Basagran for weed eradication, especially for Leptochloa chinensis and Echinochloa crus-galli, in rice plant using direct planting system. This experiment was done between May and September 2011 in Biromaru, District of Sigi, Central Sulawesi. There were 12 treatments tested and arranged in a randomized block design, namely: Tetris 0.75 l/ha + Basagran 2 l/ha, Tetris 0.75 l/ha + Basagran 3 l/ha, Tetris 1 l/ha + Basagran 2 l/ha, Tetris 1 l/ha + Basagran 3 l/ha, Tetris 1.2 l/ha + Basagran 2 l/ha, Tetris 1.2 l/ha + Basagran 3 l/ha, Tetris 1 l/ha + Invest 400g + 2.4D 0.8 l/ha, RiceStar-Xtra 0.5 l/ha + 2.4D 0.8 l/ha, Cliper 0.5 l/ha + 2.4D 0.8 l/ha, Rumpas 0.3 l/ha + 2.4D 0.8 l/ha, Pyzaro 1 l/ha + 2.4D 0.8 l/ha, and control (without herbicide). Each of these treatments was replicated three times and applied at 10 and 20 days after planting. The results indicated that all the herbicide combinations were able to eradicate total and dominant weeds in the tested rice field. The dominant weeds that were eradicated including grass weed (Ischaemum rugosum, Leptochloa chinensis and Echinochloa crus-galli), “teki” (Cyperus iria and Fymbristilis miliacea) as well as a broadleaf weed (Ludwigia octovalvis). It was also found that the application of Tetris and Basagran combination in a rice plantation using the direct planting system at 10 days after planting was more effective than at 20 days after planting, and the recommended ranges of combination is between 0.75+2 l/ha and 1+2 l/ha.
Plant Growth Variation At Combined Progeny And Provenance Of 5-Year-Old Intsia Bijuga (Colebr. )O.Kuntze In Sobang, Banten Adinugraha, Hamdan Adma; Pudjiono, Sugeng; Ismail, Burhan; Mahfudz, Mahfudz
Jurnal Wasian Vol 1, No 2 (2014): Jurnal Wasian
Publisher : Balai Penelitian Kehutanan Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v1i2.861

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This study was conducted to evaluate plant growth of Intsia bijuga at 5 years old in Sobang, Banten for supplying good genetic material in the future. Establishment of the trial was conducted in 2007 using Randomized Complete Block Design (RCBD) that consisted of 6 blocks, 100 families nested in 10 provenances, 4 treeplot for each family with a spacing of 4 x4 m. Measurements were taken periodically every year on the survival percentage, total height and stem diameter at the breast height or dbh. At the age of 5 years showed that the significant differences among provenance in survival percentage that ranged from 41.61 to 65.11 %,  average of plant height were 1.04 to 2.82 m and dbh 1.24 to 1.59 cm. The growth variation families also showed significant differences in height and diameter. The survival rate ranged from 12.5-91.67 %, average plant height were 0.52-2.55 m and dbh 0.90-2.44 cm. Individual tree heritability estimate for height was height (0.344) while that of diameter was moderate (0.259). Family heritabilities for height and diameter was considered moderate, namely 0.573 and 0.491 respectively. Genetic correlation between height and diameter growth was positive and high (0.834).
Development of Vegetative Propagation Technology of Teak Plant in Small Holder Forest Adinugraha, Hamdan Adma; Mahfudz, Mahfudz
Jurnal Wasian Vol 1, No 1 (2014): Jurnal Wasian
Publisher : Balai Penelitian Kehutanan Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v1i1.847

Abstract

Teak (Tectona grandis) is one of popular and important carpentry wood in Indonesia. However teak production for carpentry material cannot balance the increasing need for domestic and export market. The increased production from small holder forest can be alternative way to supply national wood need. Therefore science and technology play role to support forest productivity eg superior seedling from vegetative propagation. The preparing of superior seed took several steps i.e. selection from mother tree, genetic material extraction, grafting activity using budding technique, hedge orchard establishment, and mass production used cutting rotted or tissue culture. From clonal test we can derive superior seed which adaptive with development location and has better productivity.
ANALISIS SISTEM PERKAWINAN MERBAU (Intsia bijuga O. Ktze) DI PAPUA BERDASARKAN PENANDA ISOENZIM Mahfudz, Mahfudz; Sumardi, Sumardi; Hardiyanto, E B
Jurnal Pemuliaan Tanaman Hutan Vol 4, No 2 (2010): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2010.4.2.109-116

Abstract

Merbau (Intsia bijuga O. Ktze) is an important species to supply wood in Indonesia. Mating system on natural population of merbau can influence genetic diversity of merbau. The objectives of this study were to investigate mating system on natural forest of merbau in Papua. The research used 200 samples of merbau from 10 mother trees in Gunung Meja Forest Research Manokwari-Papua. Isoenzyme analysis was done using four enzyme systems i. e. Peroxidase (POD), Esterase (EST), Glutamate Oxaloacetate Transaminase (GOT) dan Diaphorase (DIA). Data were analysed using MLTR program. The result showed that average genetic diversity (He) 0.463 and total heterozygosity (HT) 0.496. The multilocus population outcrossing rate (tm) and singlelocus population outcrossing rate (ts) were tm = 1.00 and ts = 0.992. Probability of inbreeding rate (tm  - ts) = 0.008.
PENGARUH FAKTOR-FAKTOR FUNDAMENTAL TERHADAP HARGA SAHAM (Studi Pada Perusahaan Pertambangan yang Terdaftar di Bursa Efek Indonesia (BEI) Tahun 2012-2014) Dwinurcahyo, Ridho; Mahfudz, Mahfudz
Diponegoro Journal of Management Volume 5, Nomor 3, Tahun 2016
Publisher : Faculty of Economics and Business Diponegoro University

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The aims of this study are to analyze the effect of Earning per Share (EPS), Price Earning Ratio (PER), Price to Book Value (PBV), dan Debt to Equity Ratio (DER) on Stock Prices. This study was taken because there are still differences between the research study with each other and there is a difference between the real of research data with existing theory. This research was conducted using secondary data. Sampling technique used was purposive sampling. The criteria that needed are mining company whose shares are still actively traded on the Indonesia Stock Exchange, has a data independent and dependent variables for this study, and has a complete annual report for the year 2012-2014. Of the thirty-nine companies, only taken nineteen companies as research samples. The analytical method used is multiple linear regression analysis. The results showed that there are simultaneously influences between Earning per Share (EPS), Price Earning Ratio (PER), Price to Book Value (PBV), Debt to Equity Ratio (DER) on stock prices. Partially, Earning per Share (EPS), Price Earning Ratio (PER), Price to Book Value (PBV) has a positive and significant impact on stock prices and the Debt to Equity Ratio (DER) has a negative and significant impact on stock prices.
ANALISIS FAKTOR-FAKTOR YANG MEMENGARUHI KEPUTUSAN HEDGING DENGAN DERIVATIF VALUTA ASING (STUDI PADA PERUSAHAAN NON-FINANSIAL YANG TERDAFTAR DI BURSA EFEK INDONESIA PERIODE TAHUN 2011–2014) Kussulisty, Maria Josephine Widya Arshita; Mahfudz, Mahfudz
Diponegoro Journal of Management Volume 5, Nomor 3, Tahun 2016
Publisher : Faculty of Economics and Business Diponegoro University

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Foreign currency derivatives are commonly used by companies to hedge foreign exchange risk. This study aims to examine the effect of Debt to Equity Ratio (DER), Interest Coverage Ratio (ICR), liquidity, growth opportunity, firm size, foreign debt, and managerial ownership on hedging decision using foreign currency derivatives. Using purposive sampling, 93 non-financial companies listed on the Indonesia Stock Exchange in 2011-2014 are selected as sample. Sample data are collected from annual report published on the Indonesia Stock Exchange website. Logistic regression analysis is used in this study to examine the effect of independent variables on dependent variable. The result of this study proves that ICR, growth opportunity, firm size, and foreign debt have positive and significant effect on hedging decision using foreign currency derivative. Liquidity has negative and significant effect on hedging decision using foreign currency derivatives. Whereas DER and managerial ownership do not influence hedging decision using foreign currency derivatives. The value of Nagelkerke’s R Square is 35,4% which means the variability of the dependent variable that can be explained by the variability of independent variables in the model amounted to 35,4%.