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INDONESIA
jurnal Ilmu Pertanian (Agricultural Science)
Published by Universitas Gadjah Mada
ISSN : 01264214     EISSN : 25277162     DOI : https://doi.org/10.22146/ipas
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Ilmu Pertanian (Agricultural Science) with registered number ISSN 0126-4214 (print) ISSN 2527-7162 (online) is a scientific open access journal published by Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI (Perhimpunan Sarjana Pertanian Indonesia). Ilmu Pertanian (Agricultural Science) provides a forum for the publication of scientific articles in the scope of agricultural sciences with priority on science and plant technology (plantation, horticulture, and forestry), including aspects of postharvest and socioeconomic. Ilmu Pertanian (Agricultural Science) is published three times annually, April, August, and December.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 7 Documents
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Search results for , issue "Vol 1, No 3 (2016): December" : 7 Documents clear
Home Garden Eficiency in Kulon Progo District, Yogyakarta Eka Lia Yusiana; Slamet Hartono; Irham Irham
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9202

Abstract

This study amis at determining factors that become source of yard farming inefficiency of both KRPL farmers (those who participated in Sustainable Food House Area program) and non KRPL farmers in Kulon Progo. Data Envelopment Analysis (DEA) was used with input and output-oriented assumptions to measure the efficiency score of yard farming observed. This Study showed that the sources of inefficiency in the yard farming were the excessive use of labor, cost and land area. Therefore, it should be adjusted with the number of workers to be reduced by 32%, farming cost by 31%, and the land area by 39%. Meanwhile, the output approach must be adjusted by adding 0.8% output for production and 1.17% for income.
Performance Evaluation and Optimum Portfolio Allocation for Stocks of Agribusiness and Non-Agribusiness Companies in ILQ45 Azizatun Nurhayati; Any Suryantini; Jamhari Jamhari
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9240

Abstract

Investors need fundamental aspects to allocate their fund in a set of efficient portfolio to maximize their yield. One of many fundamental aspecs is risk and return stocks price analysis. There were some agribusniness companies and non-agribusiness companies listed in ILQ45. This study was aimed to know stock performance of agribusiness companies compared with non-agribusiness companies which were listed in Index Liquid 45 in Indonesia Stock Exchange and to allocate optimum portfolio with cut off point method and randomly designed methode. Data of monthly from August 2011-December 2015 was used in this study. The result showed that range of return of agribusiness companies was -13.24% up to 20.098% and non-agribusiness was 49.50% up to 10.39%. Range of standard deviation for agribusiness companies was 6.43%-14.36% and 5.87-15.54% for non-agribusiness. Range of positive coefficient of variance (CV) for agribusiness was 3.59-18.61 and 5.47-59.19. Optimum portfolio formed by Unilever Indonesia (61.27%), Indofood ICBP (32.27%), BCA (3.81%), and BRI (2.65%). Return of optimum portfolio was 21.77% year on year and it was the highest return among portofolios which were formed randomly.
Correlation of Growth Parameters with Yield of Two Cassava Varieties Amarullah Amarullah; Didik Indradewa; Prapto Yudono; Bambang Hendro Sunarminto
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.10706

Abstract

The correlation of major growth parameters with the yield of cassava in different growth phases was investigated in 2013 and 2014. This experiment was conducted to assess the effect of two cassava varieties and the different growth phases to the yield and yield components. In experiment, the varieties as treatment were arranged in a randomized complete block design (RCBD) with three replications. Two varieties consisted of superior Adira-4 and local varieties Singgah were used. The growth parameters (plant height, stem diameter, leaf number) and yield components (number of tuber, weight per tuber and tuber yield) in early growth phase, maximum vegetative growth phase and charging tuber phase, were observed. Based on the correlation results, the growth parameters and the yield highly affected to the final outcome of cassava tubers at different growth phases. In the early growth phase, occurs high demand to assimilate with the expense of storage root. However, from the maximum vegetative phase, growth parameters began to show a significant positive contribution to the tuber weight. Weight of fresh tuber in both varieties increased at the charging of tubers phase and thereafter (enlarged bulb). The early growth phase and maximum vegetative phase might not generate a significant contribution to the final yield of cassava tuber. Making those two periods were not suitable time for optimum harvesting result, and it still depended on the variety and its allocation.
The Export Strategy of PT. Dagsap Endura Eatore Yogyakarta for Entering Asean International Market Khusaini Wijayanto; Dwidjono Hadi Darwanto; Lestari Rahayu Waluyati
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.11217

Abstract

This study aimed to determine the position of PT. Dagsap Endura Eatore Yogyakarta and to formulate the export strategy to enter the international market of ASEAN. The primary and secondary data were used in this study. The SWOT analysis, consisted of four indicators i.e strengths, weakness, opportunities, and threats, was used for analysis data. The results showed that the total of weighting score for force factor of PT. Dagsap Endura Yogyakarta Eatore was 4.45; the vulnerability factor was 4.07; odds factor was 4.70; and threats factor was 4.11. The current PT. Dagsap Endura Eatore Yogyakarta is in quadrant 1 (one) SWOT matrix that supports an aggressive growth policy (Growth Oriented Strategy). Export strategy for PT. Dagsap Endura Eatore Yogyakarta should use the power, so that it can seize the export opportunities to enter the international market of ASEAN.
Consumer Willingness to Pay of Organic Rice and The Factors which Affected in Pontianak Heru Setiyadi; Slamet Hartono; Dwidjono Hadi Darwanto
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.11227

Abstract

Organic rice is claimed as one of staples food alternative choice. Consuming organic rice is not only about fulfilling the quality needs but also a part of life style. Organic rice is also available in many modern retails in Pontianak so that it is affordable enough to be consumed by Pontianak’s residents. The aims of study were to analyze Willingness To Pay (WTP) of consumers with Contingent Valuation Method (CVM) and find factors affected consumers WTP value of organic rice . Primary data were collected during March to April 2016 and analyzed by multiple regression. The samples of Pontianak’s residents were used as respondents. The result showed that willingness to pay rate of organic rice in Pontianak was low. The age, price of organic rice, ergonomic packaging, respondent expenditure in month, and non-organic rice price affected WTP  with marked positive, while marital status factor had negative marked.
Various Shallot Seed Treatments with Trichoderma to Increase Growth and Yield on Sandy Coastal Stefany Darsan; Endang Sulistyaningsih; Arif Wibowo
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.12564

Abstract

Sandy coastal area is a poor land, with minimal nutrients and low ability to store water and nutrition. Therefore, plant is difficult to grow well, consequently the treatments for improving sandy coastal is required before planting to support their growth. Application of Trichoderma as a plant-growth promoting and controlling pathogens had been known. Shallot seed treatment by Trichoderma agents was intended to improve and support plant growth and yield in the sandy coastal land. The aim of experiment was to determine the most effective treatment to improve growth and yield of shallot on sandy coastal land. The experiment had been carried out in Yogyakarta during August - November 2015. The factorial treatments of cultivar and Trichoderma applications were arranged in Completely Randomized Design with three replications. The shallot cultivars consisted of Tiron, Crok, and Biru, while Trichoderma application consisted of control (no treatment), sprayed with Trichoderma, soaked in Trichoderma, matricontioning media i.e. rice husk charcoal and brick in combination with Trichoderma. The collected data related to plant growth and yield. The result showed that seed treatment methods with Trichoderma increased the plant height, the leaf area index, extensive root, net assimilation rate (NAR), plant growth rate (PGR), Nitrate Reductase Activities (NRA), total chlorophyll, and fresh bulb weight. The best technical treatment for cultivar Tiron was soaked with Trichoderma, and Crok was sprayed with Trichoderma, while Biru cultivar was using brick in combination with Trichoderma.
Effects of Plant Growth Promoting Rhizobacteria (PGPR) on Growth and Yield of Shallot in Sandy Coastal Land Sumiyati Tuhuteru; Endang Sulistyaningsih; Arif Wibowo
Jurnal Ilmu Pertanian Vol 1, No 3 (2016): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.16349

Abstract

The marginal sandy coastal land should be utilized to maintain production level of shallot. But for increasing the productivity of sandy coastal land, in the shallot cultivation should be applied biological fertilizers, such as Plant Growth Promoting Rhizobacteria (PGPR). The purpose of this research was to obtain the most effective isolate of PGPR (Plant Growth Promoting Rhizobacteria) to the growth of three shallot cultivars in the sandy coastal land. The research had been conducted in August-November 2015 at Samas sandy coastal land, Bantul. The Factorial treatments were assigned in Randomized Complete Block Design with three blocks as replications. The first factor was shallot cultivars consisted of Crok, Tiron and Tuk-tuk, while the second factor was the PGPR suspension, i.e. control (without PGPR), PGPR isolates BP25.2 (Bacillus methylotrophicus), BP25.6 (Bacillus amyloliquofaciens), BP25.7 (Bacillus subtilis), BrSM 4 (Burkholderiacepacia), and BrSG 5 (Burkholderiaseminalis). The data of growth and yield were analyzed using ANOVA with α = 5%, then followed by DMRT α 5% . The result showed that Tiron cultivar was able to grow in sandy coastal land, proven from its good germination, high number of bulb, high fresh weight, and dry weight of bulb. Meanwhile, BP25.2 isolate was able to increase seed growth simultaneously of Tiron cultivar and BrSM 4 isolate was able to increase the chlorophyll content of Tuk-tuk cultivars.

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