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Jurnal Ilmu Pertanian

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Published by Universitas Gadjah Mada

ISSN : - EISSN : - DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

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Articles 7 Documents

Search results for , issue "Vol 1, No 2 (2016): August" : 7 Documents clear

Effects of Herbicide Application Timing and Tillage System on Tobacco Plant (Nicotiana tabacum L.) Vanindyantara Nugra Pratama
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

This research aims to study the result of proper glyphosate and paraquat application and tillage system as weed controller and to get the proper herbicide application timing and soil tillage system for increased growth and yield of tobacco. The research was conducted in Pakel Village, Sumberpucung District, Malang Regency in July-October 2014. Method used in the research was Split-Plot design with 2 levels of tillage system as main plot and 6 levels of application herbicide timing as sub-plot with 3 replications. Glyphosate application before planting increased growth factor of tobacco i.e. number of leaves, plant height, and leaf area. Glyphosate application before tillage and planting increased yield factor of tobacco i.e. fresh weight of roots and stems, fresh weight of leaves, dry weight of chopped tobacco, and nicotine content.

Performance of Village Unit Co-Operatives in Yogyakarta Special Region: A Data Envelopment Analysis Approach Abi Pratiwa Siregar; Jamhari Jamhari; Lestari Rahayu Waluyati
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

This study assessed the performance of 32 village unit co-operatives (KUD) in Yogyakarta Special Region during 2011 to 2012. The efficiency level of the KUD were evaluated by employing the data envelopment analysis and multiple regression analysis using panel data to determine the factors affecting efficiency level. Efficiency analysis was decomposed into three dimensions to explore possible sources of inefficiency. According to Marwa and Aziakpono (2016), the first dimension was technical efficiency, which explored the overall effectiveness of transforming the productive inputs into desired outputs compared to the data-driven frontier of best practice. The second dimension was pure technical efficiency, which captured managerial efficiency in the intermediation process. The third dimension was scale efficiency, which explored whether KUD were operating in an optimal scale of operation or not. The results found that the average scores are 64%, 92%, and 68% for technical, pure technical, and scale efficiency respectively in 2011, while in 2012 the average scores are 57%, 94%, and 60% for technical, pure technical, and scale efficiency. Factors having significantly positive impact on several measures of efficiency are incentive and dummy variables (agriculture inputs and hand tractor). Accounts receivable only has positive relationship to pure technical efficiency. On the other hand, rice milling unit and electricity services have negative impact with several measures of efficiency.

Competitiveness of Tea Exports in Asean: A Constant Market Share Analysis Nadia Oktaviana; Masyhuri Masyhuri; Slamet Hartono
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

This study was aimed to find out the competitiveness of tea exports in ASEAN during 2011-2014. Competitiveness indicates a country ability to compete with other countries in international trade activities. Constant Market Share (CMS) employed to understand the weaknesses and strengths of a country viewed from the effect of exports growth. CMS results showed that the major weakness of tea exports in Malaysia, Singapore, Thailand, and Vietnam is the effect of market distribution. Market distribution effect indicated that their exports to countries with a high demand for tea in the world. On the other hand, the strengths of tea exports in Malaysia, Singapore, Thailand, and Vietnam are the effect of world exports growth, commodity composition effect, and the competitiveness effect. Conversely, the major weakness of tea exports in Indonesia is competitiveness effect, while the strengths are the effect of world exports growth and the effect of market distribution.

Analysis of Rice Price Trend and Vertical Integration of Rice Market in Indonesia Asih Kusumaningsih; Jamhari Jamhari; Dwidjono Hadi Darwanto
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

The aims of this study were (1) to determine the trend of retail rice price in Indonesia and the price of grain at the farmer level in Indonesia and (2) to identify the vertical integration of the rice market in Indonesia. The monthly data of retail rice price and the price of grain at the farmer level (price of harvested dried grain at the farmer level) in Indonesia during January 2008 - January 2016 were used in this study. The least squares method was applied to determine the trend of prices, while Co-integration Model of Engle-Granger and ECM was used to estimate the vertical integration of Indonesian rice market. The results indicated that both types of prices had an upward trend. In the analysis of the vertical integration of rice market in Indonesia, there was a long-term balance relationship and short-term equilibrium relationship.

Effect of The Substitution of Compound Fertilizer With Single Fertilizer and Mycorrhizal Inoculation on The Growth and Yield of Soybean Among Eucalyptus Apresus Sinaga; Didik Indradewa; Priyono Suryanto
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

The efforts to improve the productivity of soybean can be done through technological innovation by the provision of chemical fertilizers and mycorrhizae. This study were aimed to obtain information on the effect of a single fertilizer, which can provide the same or higher level of soybean crops if compared with those compound fertilizers, as well as to find out the effect of mycorrhizae to the improvement of efficiency in the use of inorganic fertilizers. It is expected that the mycorrhizae inoculation can reduce single fertilizer’s dose to the level equivalent to the compound fertilizer given by farmers. The study was conducted in Bleberan Village, Playen Subdistrict, Gunung Kidul Regency, Yogyakarta from February to May 2015. It was conducted by using a two-factors factorial design arranged in a randomized block design with three replications. The first factor was inorganic fertilizer (N, P2O5 and K2O), consisting of 5 levels, i.e. without fertilizer (0-0-0 kg/ ha), Phonska fertilizer (45-45-45 kg/ha), single fertilizer (45 -45-45 kg/ha), a low single fertilizer (23-36-30 kg/ha) and high single fertilizer (23-108-90 kg/ha). The second factor was mycorrhizal inoculation, consisting of three levels, i.e. without mycorrhizae (0 g), medium dose (2.5 g) and high dose (5 g). Data were analyzed using Analysis of Variance (ANOVA) at a significance level of 5%. If there was a significant difference, analysis was followed by Duncan Multiple Range Test with a significance level of 5%. The relationship between variables observed was examined by a correlation analysis. The results showed that there was no interaction between inorganic fertilizer and mycorrhizal application. The dose of single fertilizer which was equivalent to the dose of compound fertilizer given to soybean could increase crops by 1.37 t/ha compared with plants treated with a compound fertilizer 1.13 t/ha. The results of correlation analysis among parameters showed that there were correlations between the grain crops and height (r = 0.506**), stem diameter (r = 0.303*), and the number of pods per plant (r = 0.313*).

Yield, Capsaicin Content and Peroxidase Enzyme Activity of Four Chili Cultivars on Three Environments Mahya Nur Rohmah; Suyadi Mitrowihardjo; Rudi Hari Murti
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

The experiment aimed to determine the effect of different environment (altitude and drought stress) on the growth, yield per plants, capsaisin levels, and peroxidase activities of four chili cultivars. Capsicum annuum (‘Lado’ and ‘Gada’) and Capsicum frutescens (‘Pelita’ and ‘Sona’) were grown with standard cultivation in medium land (± 700 m asl, Kaliurang) and low land (112 m asl, Bulaksumur) in two environments i.e. standard cultivation and drought treatment. The cultivars were arranged in Complete Randomize Design with four replications in each environment. The data were analyzed using analysis of variance with orthogonal contrast model, while the GGE biplot was applied for identification of stability. The result showed significant interaction between environment and cultivar on plant height, fruit’s weight per plant and the contents of capsaicin. Medium land of Kaliurang had suitable environment for chili cultivation of four cultivars and the high capsaicin content of C. frutescens. ‘Gada’ was significantly higher than other cultivars for fruit weight per plant in all planting conditions, while ‘Sona’ had the highest capsaicin content and was stable in all environments. Drought stress increased capsaicin content in low capsaicin content variety, in contrast to high capsaicin content cultivar. Peroxidase enzyme activity of C. frutescens was significantly higher than C. annuum, while C. annuum cultivars also shown significantly different in peroxidase activity.

Risk Management Strategy on Shallot Farming in Bantul and Nganjuk Regency Fuad Hasan; Dwidjono Hadi Darwanto; Masyhuri Masyhuri; Witono Adiyoga
Jurnal Ilmu Pertanian Vol 1, No 2 (2016): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

The objectives of this research were to understand farmers’ perception to risk and risk management strategy on shallot farming. The research was conducted in Bantul and Nganjuk Regency. The number of samples taken were 57 farmers in Bantul and 90 farmers in Nganjuk. Analysis used was frequency table that disaggregate based on agroecosystem and cropping pattern. The result showed that according to farmers’ perception, production and price risk were high. Farmer's decision to follow dominant cropping pattern and production system reflected on the ex ante risk management strategies done by the farmers as their own respection. In the interactive risk management strategies, farmers tended to use chemical fertilizers over chemical pesticides. In ex post risk management strategy, in the failure of shallot farming, they kept cultivating shallot that their capital got on cash and input for shallot farming.

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