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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 539 Documents
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The Relationships Among Physiological Characters and Productivities of Nine PGL Clones in Medium Land Ika Irmayanti; Didik Indradewa; Eka Tarwaca Susila Putra
Jurnal Ilmu Pertanian Vol 18, No 3 (2015): 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.8654

Abstract

The objectives of the study were to determine the relationships among the physiological characters and productivities of nine PGL clones in medium land. Field trial was arranged in a Randomized Complete Block Design (RCBD) single factor with three blocks as replications. The treatment was PGL clones, consisting of nine clones, namely PGL 1 PGL 3, 4 PGL, PGL 7, PGL 10, PGL 11, PGL 12, PGL 15, and PGL 17. The observations were done on several variables of physiological characters and productivities. Data were analyzed by using the Analysis of Variance (ANOVA) at 5% levels. If there were significant differences among the treatments, they will be analysed by Duncan Multiple Range Test (DMRT). The relationships among variables were determined using correlation analysis. Results showed that there were wide variations in the stomatal density and width openings  and also productivities among the nine PGL clones. Stomatal density and width openings have significant positive correlation with the productivity. PGL 12 and 15 with a denser of stomatal arrangement and wider stomatal openings have higher productivities when compared to other PGL clones, especially PGL 7 with the most loosely stomatal arrangement and narrower stomatal openings.
Pertumbuhan, Produktivitas, dan Rendemen Minyak Kelapa Sawit di Dataran Tinggi Eka Listia; Didik Indradewa; Eka Tarwaca Susila Putra
Jurnal Ilmu Pertanian Vol 18, No 2 (2015): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9087

Abstract

Penelitian ini bertujuan untuk mengetahui pertumbuhan, produktivitas dan rendemen minyak kelapa sawit yang ditanam pada dataran tinggi. Penelitian dilaksanakan pada empat lokasi penelitian dengan ketinggian tempat 50, 368, 693 dan 865 m dpl yang berada di wilayah Sumatera Utara. Penelitian disusun dalam Rancangan Acak Kelompok menggunakan kelapa sawit jenis tenera pada kelompok tanaman muda yang berumur 7 – 8 tahun. Hasil penelitian menunjukkan bahwa pertumbuhan tanaman kelapa sawit di dataran tinggi yang meliputi panjang rachis, indeks luas daun, bobot kering daun, tinggi tanaman, volume batang dan bobot kering batang memiliki nilai lebih tinggi dibandingkan tanaman kelapa sawit di dataran rendah. Produktivitas tertinggi mencapai 28,5 ton TBS/ha/tahun pada penanaman kelapa sawit di ketinggian 368 m dpl. Rendemen minyak tertinggi 25,9% dicapai pada ketinggian tempat 50 m dpl. Kandungan karoten tertinggi 590,8 ppm dan nilai indeks panen tertinggi 0,39 dicapai oleh tanaman kelapa sawit di dataran rendah dengan ketinggian 368 m dpl.
Potensi Jamur Mikoriza Arbuskular Unggul Dalam Peningkatan Pertumbuhan Dan Kesehatan Bibit Tebu (Saccharum officinarum L.) Citra Mayang Wardhika
Jurnal Ilmu Pertanian Vol 18, No 2 (2015): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9088

Abstract

Tebu merupakan salah satu komoditas perkebunan penting bagi perekonomian nasional dan berperan dalam mendorong pengembangan wilayah dan agroindustri. Indonesia telah mencanangkan untuk swasembada gula, sehingga peningkatan produksi tebu yang merupakan salah satu bahan pokok gula, harus dilakukan. Mikoriza merupakan suatu bentuk hubungan simbiosis mutualistik antara jamur dan perakaran tumbuhan tingkat tinggi. Jamur Mikoriza Arbuskular (JMA) dapat mempercepat laju pertumbuhan, meningkatkan kualitas dan daya hidup bibit tanaman dan meningkatkan pertumbuhan dan produktivitas tanaman lahan kritis. Penelitian ini meliputi identifikasi jenis JMA yang paling dominan pada semua isolat yang diperoleh dari rizosfer tebu, perbanyakan starter inokulum JMA, dan inokulasi pada bibit tebu. Hasil isolasi JMA dari berbagai lokasi, diperoleh 6 genus JMA, yaitu: Glomus, Gigaspora, Acaulospora, Scutellospora, Entrophospora, dan Sclerocystis. Genus Glomus merupakan genus yang dominan dan digunakan dalam pengujian selanjutnya. Hasil uji infektivitas dengan menggunakan klon tebu PS 862 menunjukkan bahwa isolat PKP, MS, KLT, dan BTG yang masing-masing berasal dari Kulon Progo, Sleman, Klaten, dan Batang menunjukkan infektivitas yang paling tinggi dan dapat dijadikan kandidat bahan pupuk hayati. Penambahan JMA pada bibit tebu dapat mengurangi intensitas penyakit karat jingga; penyakit utama pada bibit tebu, yang berarti JMA berpotensi sebagai agens pengendali hayati.
Efisiensi Teknis Usahatani Kopi Arabika di Kabupaten Enrekang Syahruni Thamrin
Jurnal Ilmu Pertanian Vol 18, No 2 (2015): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9090

Abstract

Penelitian ini bertujuan untuk mengetahui efisiensi teknis usahatani kopi arabika di Kabupaten Enrekang. Populasi dari penelitian ini adalah petani kopi arabika, jumlah sampel dalam penelitian ini sebanyak 100 orang. Analisis dilakukan dengan analisis deskriptif kualitatif, analisis efisiensi teknis dan inefisiensi teknis. Estimasi dilakukan dengan menggunakan fungsi produksi frontir stokastik. Faktor-faktor yang berpengaruh sangat nyata pada efisiensi teknis kopi adalah luas lahan, penggunaan pupuk Urea, ZA dan tenaga kerja. Rata-rata efisiensi teknis petani responden adalah 0,89. Berarti petani telah efisien secara teknis khususnya dalam mengalokasikan sumberdaya dan memanfaatkan teknologi budidaya yang ada. Sementara itu hasil estimasi dengan menggunakan metode MLE, variable yang signifikan dan berkorelasi negatif adalah jumlah anggota keluarga.
Farmers Entrepreneurship and Performance of Red Onion Farming in Bantul District Ulfah Nurdiani
Jurnal Ilmu Pertanian Vol 18, No 2 (2015): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9091

Abstract

The purposes of this study were: (1) To identify the level of onion farmers entrepreneurship in Bantul district, (2) To determine the influence of individual factors, physical, social, economic and institutional environment on the level of farmers entrepreneurship and performance of red onion farming in Bantul district, and (3) To determine the effect of the level farmers entrepreneurship on performance of red onion farming in Bantul district. The method study uses descriptive analytical, which analyzed the data further to find a relationship or ratio between the variables in the theoretical framework of thinking. Data collection using questionnaires previously tested the validity of using Product Moment Correlation and reliability testing using Cronbach Alpha coefficients. Data analysis techniques broadly consists of three stages: a preliminary analysis to calculate individual farm performance indicators (produtifitas, revenue and Private Cost Ratio), descriptive analysis of the percentage of the study variables and analysis of structural equation model (SEM). The research results showed that the level of red onion farmers entrepreneurship in Bantul categorized high with an overall average percentage of 70.87%. Individual factors, physical, social, economic and institutional environment positive and significant impact on the farmers entrepreneurship and performance of farming. The factor that has the greatest positive effect of individual factors followed by the  institutional  environment. The  physical  environment and  the economy have the same magnitude, while the smallest is the social environment influences. Farmer entrepreneurship positive effect on farm performance and has an important role in mediating the influence of individual and environmental factors on farm performance. These results provide evidence for the idea that entrepreneurial farmers is something that can be grown and can be considered to be a new approach in improving farm performance
Prediksi Neraca Air Untuk Menentukan Masa Tanam Tebu di Kecamatan Kalasan, Sleman Kamelia Dwi Jayanti
Jurnal Ilmu Pertanian Vol 18, No 2 (2015): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9092

Abstract

Perubahan pola curah hujan di Indonesia telah terjadi sejak beberapa decade terakhir. Perubahan ini menyebabkan terjadinya pergeseran musim di beberapa daerah. Tanaman tebu (Saccharum officinarum L.) merupakan tanaman yang membutuhkan banyak air pada fase vegetative tetapi membutuhkan kondisi kering ketika menjelang panen. Penentuan masa tanam yang kurang tepat dapat menurunkan hasil produksi bahkan gagal panen. Penelitian penentuan masa tanam tebu dilakukan di Kecamatan Kalasan, Sleman. Daerah ini merupakan lahan tadah hujan. Curah hujan sangat berpengaruh terhadap ketersediaan lengas tanah pada lahan tadah hujan. Data yang digunakan dalam penelitian ini adalah data curah hujan bulanan selama 10 tahun terakhir (2002 -2011), suhu, kelembaban, kecepatan angin, lama penyinaran, sifat fisik tanah dan data tanaman. Penelitian ini didahului dengan membangkitkan data curah hujan bulanan 10 tahun ke depan (2012-2022) dengan menggunakan model Thomas-Fiering. Data curah hujan bangkitan ini digunakan untuk membuat neraca air. Neraca air menggambarkan kondisi surplus dan defisit ketersediaan lengas tanah. Data analisis neraca air menunjukkan bahwa masa tanam tebu yang tepat adalah September- Agustus dan Oktober-September.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9139

Abstract

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.
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.
Contribution of Agricultural Sector Towards Regional Income Inequality of Sumatera Economic Corridor Dany Juhandi; Irham Irham; Jamhari Jamhari
Jurnal Ilmu Pertanian Vol 1, No 1 (2016): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.9256

Abstract

Finding of previous studies shows that Sumatera Economic Corridor is categorized as the highest income inequality. The Indonesian goverment enacts MP3EI (Master Plan for the Acceleration and Expansion of Indonesia Economic Development) program to promote equitable development where each economic corridor owns strategic economic sector. The objective of this study is to analyze the contribution of agricultural sector on income inequality in Sumatera Economic Corridor (SEC) using a weighted coefficient of variation. We use secondary time series data of Gross Regional Domestic Product (GRDP), number of population, and per capita income of a time range between 2002 and 2013. Data analysis shows that agricultural sector has the least contribution on income inequality. Consequently, goverment policy should be focusing on the development of agricultural sector in Sumatera Economic Corridor

Page 6 of 54 | Total Record : 539

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