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Issue Title
 
Vol 31, No 2 (2008): Forum Pascasarjana

South Kalimantan is a province with large dryland area.  This potency can be used for maize cultivation that will contribute to national maize production and play an important role as import substitution.  One of the major problems in maize cultivation is its low productivity that might be caused by its low efficiency of input use.  The objectives of this research are (1) to estimate factors influencing maize production and to analyze dryland farming efficiency, both in technical and allocative efficiency of dryland farming, and (2) to analyze dryland maize farming competitiveness in Kabupaten Tanah Laut, South Kalimantan, and the efficiency effect to its competitiveness.  The methods used are the stochastic frontier production function and the dual frontier cost function for the first objective, and criterion of private cost ratio and domestic resources cost ratio for the second objective.  The results showed that land, seed, organic fertilizer, P-fertilizer, pesticide, labor and land treatment significantly influence production.  Generally, the farmers at research area have been technically efficient but allocatively inefficient. In order to increase economic efficiency, reduction in N-fertilizer is suggested.  The maize commodity in Kabupaten Tanah Laut is profitable and has competitive and comparative advantages.  The increasing of allocative efficiency will increase the competitiveness.

 

Key words: dryland maize farming, efficiency, competitiveness
Abstract   PDF
Ahmad Yousuf Kurniawan, Sri Hartoyo, Yusman Syaukat
 
Vol 31, No 4 (2008): Forum Pascasarjana

The field observation of this research was conducted from June 2005 to May 2007 in tropical rainforest at Lore Lindu National Park, Central Sulawesi.  The main objectives of this research were to study (i) the relationships between interception loss and rainfall properties and vegetation characters and to determine the dominant factors affected, (ii) the effect of rainfall interception on energy flux and mass transfer, and (iii) the dynamics of vertical energy flux under the forest and grass land. Rainfall interception was 36.34% of gross rainfall in 200 events, Depth rainfall and LAI factors had strong effects on rainfall interception.  The relationships could be expressed as Ic = 0.980+0.239P+0.035LAI (R2 = 0.78).  The output of this equation was compared with Gash model and the observation value showed that deviation of the equation was 1% and less than Gash model, so that equation gave as good result as Gash model gave.  By considering the data requirements and calculation procedures it was concluded that this equation is applicable for interception prediction.  Land use type had effects on radiative and energy balance.  Net radiation (Rn) in the forest was 10.66 MJ/m2/day and higher than in the grass land where incident global radiation was similar.  Vertical latent heat flux in the forest was 9.53 MJ/m2/day or 89.40% Rn in rainy day and 8.41 MJ/m2/day or 74.56% Rn in dry day, on the other hand, in the grass land, sensible heat flux was higher than latent heat flux of all weather condition.  Direct effect of rainfall interception on energy flux and mass transfer it is needed latent heat about 9.0 MJ/m2/rainy day to evaporate the rain intercepted 3.69 mm/rainy day.  Effect of rainfall interception had positive correlation with  latent heat flux and the negative correlation  with sensible heat flux.

 

Key words: interception, energy, mass and tropical rainforest

Abstract   PDF
Abdul Rauf, Hidayat Pawitan, Cecep Kusmana, Tania June, G. Gravenhorst
 
Vol 33, No 2 (2010): Forum Pascasarjana

The objective of this research is to develop a model of water table fluctuation on tidal lowland area of B/C type.  Modeling of water table is expected to support the agriculture development on tidal lowland area, especially on water management due to the important role of water management in the agriculture on tidal lowland area. The water table controls on the particular depth can support the farming system and avoid pyrite oxidation. The model of water table fluctuation which is developed in this research based on the ellipse concept. The developed model has been tested on the tidal lowland areas in P6-3N Delta Telang I, Banyuasin District, South Sumatra Province. The simulated model showed the promoting result in estimating the depth of water table on tidal lowland area of B/C type. The developed model could explain the proportion of water table depth variation between 89.5% up to 94.7% with standard error estimation varied from 0.029 to 0.042 meters. The model has high sensitivity to the parameter of the water level in the tertiary canals.

 

Key words: modeling, water table, water management, tidal lowland area of B/C type
Abstract   PDF
Ngudiantoro ., Hidayat Pawitan, M. Yanuar J. Purwanto, Robiyanto H. Susanto
 
Vol 32, No 3 (2009): Forum Pascasarjana

The research analyzed rainfall data from Subang and Karawang as the centers of rice production in West Java.  The objectives of this research were to   (1) develop monthly rainfall prediction model for predicting the next four months rainfall, (2) develop a next three months rice yield prediction model and (3) estimate the availability of rice in Subang and Karawang as a function of monthly rainfall.  Both rainfall and rice yield prediction models were built by ANN technique.  ANN rainfall prediction model was applied at six rainfall stations in Subang and Karawang which are Cigadung, Karawang, Rawamerta, Subang, Sindanglaya and Ciseuti.  It was developed by including 7-8 variables (X) at input layer and 6-10 nodes at a single hidden layer.  Variables at input layer are month code (t) as X1, monthly rainfall values at t, t+1, t+2, and t+3 as X2, X3, X4, and X5 respectively, SOI at t as X6 and SST anomalies at t and t+3 as X7 and X8.  Rice yield model was built to estimate the rice production at t+3 by using four variables at input layer which are t, t+1, t +2 and t+3 as X1, X2, X3 and X4 and also included 6-8 nodes at hidden layer.  The results of this research found that the ANN model could accurately predict the monthly rainfall in all stations with the R2 values ranged from 64-96%, and maximum errors of each month rainfall ranged from 0.4-3.4 mm/month.  Rainfall model predicted that there were trends of Above Normal (AN) rainfall at Karawang and Rawamerta stations in dry season, while at four stations in Subang region would experience Below Normal (BN) rainfall in dry season.  Based on 2009 rainfall prediction, the rice yield model predicted highest rice production to happen during February and March 2009 at values of 299.294 ton and 329.082 ton.

 

Key words: artificial neural network, rainfall prediction, rice production
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Magfira Syarifuddin, Yonny Koesmaryono, Aris Pramudia
 
Vol 33, No 2 (2010): Forum Pascasarjana

This article reported risk preferences and the consequences on tobacco farming in Pamekasan.  Frontier production function model with heteroskedastic error structure estimated by maximume likelihood estimation developed by Kumbhakar  was adopted to  analyze the goals.  This model can capture the effect of risk preference on input allocation, inefficiency and productivity.  Four hundred fifty samples were drawn by cluster sampling method.  The results show that risk preferences were not depended on agroecosystem and farming system, but they were determined by farm size.  Most of the farmers prefered to avoid production risk.  The consequences were input allocation under optimum condition, technical and allocative efficiencies at a low level, and depleted productivity.

 

Key words: productivity, production risk, risk preference, inefficiency
Abstract   PDF
Elys Fauziyah, Sri Hartoyo, Nunung Kusnadi, Sri Utami Kuntjoro
 
Vol 32, No 2 (2009): Forum Pascasarjana

Residential solid waste is being a critical problem in many cities in clauding Jakarta.  Cummnity-based management is the most important strategy even when sophiticated treatment such as bio-energy or waste industrial park word be implemented soon, as every waste processing neds separated wastes.  Increasing the participation through community-based manajement is more effective than cange people’sperception and behavior on domestic wastes.  In some cates, to change community behavior in waste separition and recycling need more than ten years i.e. at Kampung Banjarsari, but with appropriate support system on sosial planning only took two years i.e. Kampung Rajawati.  The implementation constrain of this progammeis on replication or expandability of the progamme to implemented in another place.  There are also lack of government’s significantefforts to push and to supprots than action.  It’s true that some cummunities develop the some model, but without acceleration and exvandable progamme, the significance of that effort is very poor.  This study tried to ellaborate the model of system based ofnspatial analyses to determine resedential typology and found five resedential types i.e. high, middle-high, middle, middle-lower and lower level of resendential.  Quantitative analyses to determine typology of community participation found four types of cummnity participation i.e. moral-normative, moral-remunerayive, calculative-remuneraive and calculative-coercive.  Qualitative analyses had been ellaborated to determine authority or government policies typology.  Breaking down from these clssification, there strategies could develop, namely community participation strategy, infastructure development strategy and institutional manajement strategy.  Implementation of these models could accomodate the heterogeneity of communities and give positive impact on social acceptability.

 

Key words: social planning, community management, residential solid wastes

Abstract   PDF
Nonon Saribanon, Endriatmo Soetarto, Surjono H. Sutjahjo, E. Gumbira Sa’id, Sumardjo .
 
Vol 32, No 3 (2009): Forum Pascasarjana

The economic crisis in 1997 has caused the rupiah exchange rate to depreciate from about Rp 2,500/US dollar to Rp 15,000/US dollar in the time of crisis and to around Rp 9,300/US dollar recently.  This condition caused the authority to focus their policy in stabilizing rupiah  and reducing inflation rate.  The objectives of this research are firstly, to analyze the response of the variables of industrial production index (IPI), money supply and interest rate when the shocks to exchange rate and inflation take place; secondly, to analyze the contributions of  IPI, inflation rate, money supply and interest rate differentiation in explaining the variation of exchange rate and inflation rate of Indonesia; and thirdly, to formulate the monetary policy of implication stabilizing the rupiah and inflation rate.  The results show that the shock to the rupiah exchange rate has resulted in a very high depreciation responded by an increase in money supply and price but IPI decreases.  To reduce depreciation, authority can increase the interest rate. Meanwhile the shock to inflation are responded directly by increases in Bank Indonesia certificate rate so that the money supply decreases, exchange rate appreciates, and IPI decreases.  To stabilize the rupiah exchange rate and the inflation rate, monetary authority should carry out the tight money policy through a relatively high interest rate, so capital inflow will take place.

 

Key words: monetary policy, rupiah exchange rate, inflation rate, industrial production index, vector autoregressive
Abstract   PDF
M. Ilham Riyadh, Rina Oktaviani, Hermanto Siregar
 
Vol 32, No 1 (2009): Forum Pascasarjana

The main idea of this study was to evaluate the influence of export to regional economic development.  The cinnamon was superior export commodity of Kerinci regency, which support to regional economic development. The purpose of this study was to analyze cinnamon sector effect to regional economic development of Kerinci Regency of Jambi and to analyse cinnamon price integration on farmers and export corporation level.  The study used qualitative and quantitative methods.  The data consisted of primary and secondary data.  The primary data were collected from survey and interview with respondents, such as farmers, traders, cinnamon entrepreneurs, local government staffs and other informants.  The secondary data were collected from Badan Pusat Statistik, Central Bank of Indonesia and FAOSTAT.  The analysis model consisted of descriptive model, input-output model, OLS regression combined with co-integration model and error correction model (ECM).  The results showed that the cinnamon had low correlation to support regional economic development and indicate regional leakage.  The farmers’ level price had no significant integration to export corporation price.  Increasing quality and industry processing development is the most important strategy.

 

Key words: cinnamon, sectoral linkages, price integration, regional economics, agroindustry processing
Abstract   PDF
Askar Jaya, Ernan Rustiadi, Isang Gonarsyah, Deddy S. Bratakusumah, Bambang Juanda
 
Vol 33, No 4 (2010): Forum Pascasarjana

Land rehabilitation of post-mining must be done with reforestation. Reforestation success in post-mining revegetation should to refer the characteristics of natural forests.  The success of the reforestation is expected to reach a climax forest ecosystem.  How much time is needed to achieve the desired condition (success reforestation), in this case described as the age of achievement expectations of reforestation success to reach a climax forest ecosystem (the basalt area).  The research is aimed to predict reforestation success age.  The study used regression analysis for determining the reforestation success age in mining area.  The measure used to determining the reforestation success age is basalt area (LBDS) of natural forests.  Mathematically it can be summarized to LBDS = f (age).  The study found the age of achievement expectations of reforestation success is 75 years.  Over the 75 years when the efforts to improve, protect and enhance forest functions are be done well, consistently, and even continued to rise, certainly reforestation success will be achieved, or even faster.

 

Key words: rehabilitation, mining area, reforestation, basalt area, reforestation success age

Abstract   PDF
Nining Puspaningsih, Kukuh Murtilaksono, Naik Sinukaban, I Nengah Surati Jaya, Yadi Setiadi
 
Vol 34, No 4 (2011): Forum Pascasarjana

This study was to analyze factors influencing the performance of agricultural extension workers and their impact on the competence of cacao farmers. A number of 116 agricultural extension workers, 116 groups of farmer leaders and 232 cacao farmers from four districts in South Sulawesi were participated in this study. LISREL program with SEM was used in analyzing data. The result shows that the agricultural extension workers performance was influenced significantly by characteristic, competence, motivation and self reliance. The total impact of them was 71%. The suggestion was that their performance must be improved by providing special training to improve their capability in agricultural extension planning, monitoring and evaluation, agricultural extension development and technology dissemination.

Key words: agricultural extension workers, competence of cacao farmers, performance

Abstract   PDF
Sapar ., Amri Jahi, Pang S. Asngari, Amiruddin Saleh, I G. Putu Purnaba
 
Vol 33, No 3 (2010): Forum Pascasarjana

The sustainable productivity of farmers can be realized if farmers own self relience. Farmers’s self relience can be realized if farmers own capacity to optimize self capacity and utilization of agriculture resources capacity.  Through multistage cluster sampling technique, found 75 person as farmer’s sample. Research  data including primary data and secondary data. Analysis of data done  with correlation test, regression test and path analysis.  The conclusion of this research is the self reliance level in agribusiness of food crop farmers, including the category low.  The low level of self reliance of farmers in agribusiness caused by (a) the low level of capacity development needs of farmers in agribusiness, which include low development needs: productivity capacity; marketing capacity; capacity of the security business/agribusiness; capacity in group management; networking capacity and the capacity in performance improvement/progress; (b) low level of performance of agricultural extension; (c) low levels of non-formal education of farmers.

 

Key words: agriculture extension worker, empowerment, capacity development, self-reliance, agribusiness

Abstract   PDF
Marliati ., Sumardjo ., Pang S. Asngari, Prabowo Tjitropranoto, Asep Saefuddin
 
Vol 31, No 3 (2008): Forum Pascasarjana

Sustainable agriculture development requires a high quality and proper land management in order to promote high farmer’s income and to prevent natural  resources degradation. This research was conducted in Nopu sub-watershed, a sub sub Gumbasa watershed, Central Sulawesi Province. The erosion and surface run off were observed by placing erosion plots on various ages of cocoa land uses (monoculture and agroforestry), whiles the soil quality indicators were observed by analyzing the physical and chemical properties of soil samples, which were collected from various  ages of cocoa land use. The soil profile  permeability and soil surface coverage were directly observed on the field. Production and farmer’s income of various cocoa land use systems in Nopu watershed were collected by using questioners.  Sustainable management of cocoa (monoculture and agroforestry) was formulated by using various scenarios. Results of the study showed that 1) forest conversion into cocoa land use decreased soil quality degradation, tended to increase soil erosion and run off; 2) to establish a sustainable cocoa farming system in Nopu watershed, there should be practiced a proper and equilibrium fertilization, application of adequate soil and water conservation techniques such as mulching and construction of ditches closed (rorak) and  ridges (sengkedan).

 

Key words:  cocoa, erosion, farmer’s income, forest conversion, soil quality
Abstract   PDF
Anthon Monde, Naik Sinukaban, Kukuh Murtilaksono, Nora H. Pandjaitan
 
Vol 31, No 4 (2008): Forum Pascasarjana

The implementation of fiscal decentralization in accordance with Law No 32/2004 regarding local government and No. 33/2004 regarding inter-government fiscal relationship was considered as the new era management and local government budget.  The objectives of this study were (1) to identify factors affecting regional fiscal, regional economy, poverty ond food security and (2) to evaluate impact of fiscal decentralization policy on poverty and food security in West Java.  The descriptive analysis and dynamic simultaneous equation models were used in this study, using pooled time series data of 1995-2005 and cross section data of 13 kabupatens estimated using the 2SLS method.  The result of the study showed that the DAU was the source of 68% of regional income.The routine expenditures were the largest regional expenditures (77%).  The policy of increasing agricultural development expenditures and wages affect poverty alleviation and increase food security in West Java.

 

Key words: fiscal decentralization, economics growth, poverty allevation, food security

Abstract   PDF
Wiwiek Rindayati, Bunasor Sanim, M. Parulian Hutagaol, Hermanto Siregar
 
Vol 32, No 2 (2009): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 33, No 3 (2010): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 33, No 2 (2010): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 32, No 3 (2009): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 32, No 4 (2009): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 33, No 4 (2010): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 31, No 4 (2008): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 31, No 2 (2008): Forum Pascasarjana Pedoman Penulisan Naskah Abstract   PDF
Forum Pascasarjana
 
Vol 12, No 1 (1989): Forum Pascasarjana Pengaruh Penggenangan Pada Berbagai Fase Pertumbuhan Kedelai (Glycine Max (L.) Merr) Terhadap Pertumbuhan dan Produksi Abstract   PDF
Bangun Tampubolon, Joedojono Wiroatmodjo, Justika S Baharsjah, . Soedarsono
 
Vol 35, No 1 (2012): Forum Pascasarjana Potential Analysis of Rubber Smallholding Development in Mandailing Natal Regency, North Sumatera Province Abstract   PDF
Hadijah Siregar, Santun R.P. Sitorus, Atang Sutandi
 
Vol 16, No 1 (1993): Forum Pascasarjana Prediction of runoff, sediment yield and their quality using ANSWERS model at Batujai reservoir area, West Nusa Tenggara Abstract   PDF
Gatot Irianto, Hidayat Pawitan, . Soedarsono, H. Soewardjo
 
Vol 32, No 3 (2009): Forum Pascasarjana

The effort to the economy growth of developing countries is directed to create an integrated zone that will motivate export, invite investors, and be a catalyst of a continuous growing and developing region.  This research is to design agroestat as an integrated agricultural zone under one management based on local specific competitive horticulture with regional development approach.  The research of agroestat is holistic covering the whole value-chain (farming, industry, and trading) of the regional, national, and international process agriculture.  Agroestat make use of a complex and complicated inter-dependency and inter-relation of multidimensional (social, culture, and economy) among sectors (agriculture, industry, and commerce).  Therefore, this research applied, soft, system methodology to design conceptual model of agroestat (soft system) and decision support system (hard system).  The study of agroestat benchmarks to three models of newly specific developed integrated region that is Perkebunan Inti Rakyat (PIR), agropolitan, and ecoindustrial park model.  The conceptual model of agroestate, consist of five individual elements which are infrastructure, district, business, funding, and management.  As a whole it describes the agroestate model.  Regionalization of agroestate is using objective and subjective approach into three (agriculture, industry, and commerce) economic zone on fair free trade competition and decentralization of government policy.  Agroestat in the smallest autonomous area of Kabupaten/Kota applying the integrity concept, needs supports of local government in indirect-subsidies (infrastructure) and regulation (spatial order).  Agroestate needs an independent, professional, commercial institution to manage agroestate.  The validation of Agroestat DSS (decision support system) has been done in Kabupaten Brebes with shallot as local competitive horticulture commodity.

Key words: agroestat, agricultural region, agriculture, shallot

Abstract   PDF
Handojo Kristyanto, Syamsul Maarif, Eriyatno ., Sutrisno ., Nastiti Siswi Indrasti, Tajuddin Bantacut
 
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