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INDONESIA
Jurnal Ilmu Pertanian Indonesia
Published by Institut Pertanian Bogor
ISSN : 08534217     EISSN : 24433462     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Artikel yang dimuat meliputi hasil-hasil penelitian, analisis kebijakan, dan opini-opini yang berhubungan dengan pertanian dalam arti luas, seperti agronomi, ilmu tanah, hama dan penyakit tanamam, ilmu kehewanan, kedokteran veteriner, keteknikan pertanian, teknologi industri, teknologi pangan, ilmu gizi, keluarga dan konsumen, biometri, biologi, klimatologi, peternakan perikanan, kelautan, kehutanan, dan sosial-ekonomi pertanian yang telah dipertimbangkan dan disetujui oleh Dewan Editor. Keterangan mengenai peralatan, pengamatan, dan teknik percobaan akan diterima sebagai artikel CATATAN. Pedoman Penulisan dicantumkan pada setiap terbitan tercetak. Indeks Penulisan dan subjek serta daftar penelaan (mitra bestari) dicantumkan di tiap nomor terakhir pada setiap volume.
Arjuna Subject : -
Articles 975 Documents
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Identifikasi Perubahan Mutu Selama Penyimpanan Buah Manggis Menggunakan Near Infra Red Spectroscopy . Sutrisno; Yohanes Aris Purwanto; Emmy Darmawati; Enrico Syaefullah
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 2 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

One of quality changes during storage of intact mangosteen fruit is firmness. This occurrence was predicted to have associate with moisture content in the pericarp. The objective of this research was to determine the correlation between moisture content and firmness, and to predict moisture content changes based on reflectance spectrum of near infra red (NIR). The correlation between moisture content and firmness at 13 °C is y = 0.07972x2 – 9.833x + 305.9 while at room temperature showed y = 0.1207x2 – 14.89x + 460.8; in which y refers to firmness and x refers to moisture content in pericarp. The calibration and validation evaluation using partial least square of moisture content resulted in NIR and oven method showed that the magnitude of r is 0.758-0.882; RMSEC and RMSEP is 0.09-0.39%; CV<5% is at 2.5-3.3%. Moisture content prediction using NIR reflectant spektrum is y (temperature:8 °C) = -0.057x + 65.14; y (temperature 13 °C) = -0.253x + 64.96; y (room temperature) = -0.421x + 64.76. 
Pendugaan Parameter Demografi dan Bentuk Sebaran Spasial Biawak Komodo di Pulau Rinca, Taman Nasional Komodo Yanto Santosa; Raden Yosi Zainal Muhammad; Dede Aulia Rahman
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 2 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Komodo is one of the protected rare reptiles that can only be found within the Komodo National Park and the northern island of Flores. This study was aimed to determine the species population parameters and spatial distribution. Data collection on population and spatial distribution of komodo were conducted using 20 transects with four repetitions, of which 5 transects were placed in the deciduous forest and 15 in the savannah with a total sampling area of 200 ha. The form of spatial distribution was obtained using the methods of variance ratio, dispersion index, green index, clumping index and chi-square. In addition, vegetation analysis was carried out on a 4 ha sampling plot. Results of the observations indicated that the size of the komodo population on Rinca Island was 698 individuals with a density of 3.15 individuals/km2 comprised of: adults with 1.7 individuals/km2, sub-adults with 0.65 individuals/km2, juveniles with 0.8 individuals/km2 and infants with 0.4 individuals/km2. The density of komodo in the deciduous forest (8.4 individuals/km2) was much higher than in the savannah (0.64 individuals/km2). The birth rate of komodo (11.27%) was higher than the mortality rate (4.23%). The sex ratio was 3 : 1. Within the study area, komodo distributed within clusters as indicated by the ratio of mean value of 3.77; dispersion index 3.72; green index 0.08, clumping index 2.72 and chi-square 167.059.6. Chance of encounters with Komodo in both types of habitat was much higher in the morning (80%) than during the day (20%). To increase the population size, the manager should intervene with the maintenance of hatchlings to acquire low mortality rate and protection of komodo’s natural prey species.
Pemilihan Batang Bawah dan Teknik Penyambungan Tanaman Jarak Pagar (Jatropha curcas) untuk Meningkatkan Potensi Produktivitas >10 ton/ha dan Tahan Terhadap Cekaman Kekeringan dalam Upaya Mendukung Pengembangan Bioenergi . Hariyadi; Bambang Sapta Purwoko; . Djumali; Muhammad Cholid
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Development of Jatropha in large scale in dryland requires plant material with high productivity and ability to adapt drought conditions. Attempt to maintain the stability of jatropha production in dry land can be done through grafting technology by combining the advantages of prospective shoot section which has high yield potential as a scion and rootstock candidates from plant material that is able to adapt to limited water availability. Three activities were carried out at the first year experiments including (1) selection method of drought stress that is fast, accurate and simple under laboratory condition, and (2) adaptability study of jatropha rootstock candidates associated with drought stress in glasshouse and in the field. The result showed that the method of drought stress that was fast, accurate and simple under laboratory condition was that using polyethylene glycol. Three jatropha rootstocks, namely IP-3M, Sulawesi 117, dan NTB 047, are tolerant to drought stress associated with drought stress both in glasshouse and in the field condition.
Pengujian Efikasi Skala Laboratorium Kayu Hasil Fumigasi Terhadap Serangan Rayap Tanah (Coptotermes curvignathus) Imam Wahyudi; Istie Sekartining Rahayu; . Arinana
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Fumigated wood was assumed to retain durability level against wood destroying factors. Due to lack of data, fumigated wood durability against wood destroying factors needs to be investigated, especially toward subterranean termites. The aim of this research was to evaluate fumigated wood durability against subterranean termites attack in laboratory scale (ASTM D 3345-2008). Wood samples used were sengon (Falcataria moluccana), rubberwood (Hevea brasiliensis), and mangium (Acacia mangium). Samples of 2.5 × 2.5 × 0.6 cm were fumigated inside 2 × 1 × 1 m of fumigation chamber using 2, 4, 6, 8, and 10 liters of ammonia solution for 4 days. The samples were then transferred into glass bottle, along with sterile sand and 200 worker and 20 soldier subterranean termites. After 4 weeks, mortality and weight loss percentage were measured. All treatments showed 100% of mortality, while a significant decline in weight loss percentage was varied depends on wood species as well as the volume of ammonia. Therefore, fumigated wood was proven resistant against the attacks of subterranean termites.
Krisis Keuangan Global 2008-2009 dan Implikasinya pada Perekonomian Indonesia Iman Sugema
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The global financial crisis that occurred in 2008-2009 was the worst financial crisis in 80 years, even the economists in the world called it as the mother of all crises. The subprime mortgage crisis in the United States eventually manifested into a world-wide financial crisis. No single country is free from the effects,  including Indonesia. This study aims to analyze the global financial crisis, the sources of the cause, the mechanisms of the crisis emergence, and to identify the implications of the crisis on financial sector and real sector, as well as employment and poverty. The results showed that the country has a relatively high poverty rate and unemployment rate than it should. If there is no crisis, the level of poverty alleviation and reduction of unemployment should be at a better rate. In addition, it was found that the impact of the global crisis relatively stronger to the rural households than to urban households. Therefore, because the rural labor market is much more flexible than that in urban areas, the impact of global crisis on rural unemployment rates is relatively weaker as well.
Pengembangan Model Kemitraan dan Pemasaran Terpadu Biofarmaka dalam Rangka Pemberdayaan Masyarakat Sekitar Hutan di Kabupaten Sukabumi, Provinsi Jawa Barat Leti Sundawati; Ninuk Purnaningsih; Edy Djauhari Purwakusumah
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Most of the community surrounding forest areas in Sukabumi District are poor farmers. They traditionally cultivate medicinal plants. However, quality of the products is not standardized, and hence, low price. Therefore, it is needed to strengthen and empower the farmer capacity, by developing an integrated marketing model for medicinal plants and by enhancing the competitiveness of the farmer group institution so that they can build a partnership with industry. This activity involved farmers at Mekarjaya Village, Ciemas Subdistrict who are member of Srijaya Farmer Groups Association. Survey, in-depth interview, and focus group discussion were conducted to get data on the existing condition. Farmer institution strengthening was conducted through trainings for farmers on entrepreneurship, medicinal plant cultivation and processing, facilitation of farmer group institution, and establishment of demonstration plots of medicinal plant cultivation. Agribusiness networking and partnership was built through the memorandum of understanding on marketing between Sri Jaya with two biopharmaca companies.
Perakitan Varietas Hibrida Jagung Manis Berdaya Hasil Tinggi dan Tahan Terhadap Penyakit Bulai Sriani Sujiprihati; Muhamad Syukur; Andi Takdir Makkulawu; R Neny Iriany
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Sweet corn is a result of recessive mutation which occurs naturally in gene that controls the conversion of sugar into starch in corn seed endosperm. There are 3 main genes that affect corn sweetness, namely sugary gene (su), sugary enhancer gene (se), and shrunken gene (sh2). This study aims to obtain a general combining ability value for the sweet corn lines, which will be the parent in diallel crosses; obtain the information of general combining ability, specific combining ability, and heterosis value for sweet corn lines; and obtain one or more promising single cross hybrids that will be potential for high yield and resistance to downy mildew disease. The study was conducted from April 2009 until November 2011 at the Experimental Field Centre for Cereal Plant Study (BALITSEREAL), Maros, South Sulawesi. The results showed that five genotypes had moderately high yield: Mr4/SC/BC4-3-1B, Mr14/SC/BC4-6-1B, Mr11/SC/BC4-3-1B, Mr14/SC/BC3-8-1B, and Mr12/SC/BC4-6-1B. The attack level of downy mildew that was classified as resistant has 0 to 7% rate. The combination of crosses that produce better productivity than all the varieties are: C × A (Mr11/SC/BC4-2-1B-1 × Mr12/SC/BC4-5-B-1), A × D (Mr12/SC/BC4-5-B-1 × Mr11/SC/BC4-2-1B-1), E × B (Mr12/SC/BC3-3-1B -1 × Mr14/SC/BC4-6-1B-1), and B × D (Mr11/SC/BC4-2-1B-1 × Mr14/SC/BC4-6-1B-1 ). Five hybrids can be continued for the preliminary testing of yields. Twelve candidate varieties do not have yield different than the checked varieties, so it can proceed to a multilocation trials to explore the advantages that can be released as new varieties.
Pengetahuan Tentang Manfaat Kesehatan Temulawak (Curcuma xanthorrhiza.) Serta Uji Klinis Pengaruhnya pada Sistem Imun Humoral pada Dewasa Obes Mira Dewi; Muhammad Aries; . Hardinsyah; Cesilia Meti Dwiriani; Nunuk Januwati
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Sufficient knowledge of the community regarding benefits of temulawak for health and scientific evidence of its influence on the immune system is crucial for rationalizing the utilization of these plants for health purposes. This study aimed to analyze the public's knowledge about health benefits of temulawak drinks, as well as analyzing the effect of temulawak extract drink consumption on humoral immune system function as assessed by population of B lymphocytes in obese adults. The study consisted of a survey of knowledge about the health benefits of temulawak involving 80 subjects and a clinical trial of the effect of extract temulawak drink consumption given for 2 weeks in 21 obese subjects. Populationof total lymphocytes and B lymphocytes were analyzed before and after intervention. This study showed that the health benefits of temulawak most widely known by subjects were to increase appetite and to maintain stamina. From the clinical trial it was shown that the extract significantly reduce the population of B lymphocytes, indicating a decrease in humoral immune function.
Inovasi Teknologi untuk Pengembangan Jagung dalam Rangka Mendukung Ketahanan Pangan dan Energi Wawan Hermawan; Roh santoso; Tjahja Muhandri; Titi Candra Sunarti
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Recent researches resulted several innovations such as an integrated machine for planting and fertilizer application for corn cultivation, corn noodle production, and delignification process of corn stover. The objectives of this research were (1) to improve working performances of the first prototype of integrated machine for tillage, planting, and fertilizer application for corn cultivation, (2) to develop an automatic irrigation system using solar energy, (3) to optimize processing variables on corn noodle production, and (4) to explore the delignification process of corn stover to improve the enzymes susceptibility in saccharification process. The planting and fertilizer application machine for corn cultivation has been successfully modified and showed better working performance. An automatic irrigation system using solar energy for corn cultivation has been arranged using a solar panel, a water pump, a battery, and a controlling system. The pumping discharge from a 10 m depth of well was 0.1 l/s. The optimum processing condition was resulted from the combination of 80% dough’s moisture content, at 90 °C extruder temperature and 75 rpm screw speed. The microwave heating treatment could destruct and solubilize the lignin, as compared to chemical and hydrothermal processes, and reduced the fiber crystallinity.
Formulasi Tepung Biofungisida Berbahan Aktif Ganda Pseudomonas Fluorescens PG 01 dan Bacillus Polymixa BG 25 . Widodo; Suryo Wiyono
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The objective of this study is to determine effective carrier materials and additives which is able to keep the bioperformance, including antibiosis activity to Phytophthora capsici and Colletotrichum acutatum and plant growth promoting effect, of two antagonistic bacteria Psedomonas fluorescens PG 01 and Bacillus polymixa BG 25 in biofungicide powder formulations. Talc and bentonite formulations were effective after 3 months of storage, while tapioca were only effective to B. polymixa up to 3 months of storage. Additive materials that can enhance the antibiosis activity of the bacteria, keeping up the growth and no toxicity effect to chili seedlings were crab shell powder 0.25% and MnSO4 1 to 2%. After eight months storage with 20% moisture content, the bacteria population survived in powder formulation developed in this study was still suitable for seed treatment and/or after transplanting through soil drenching with water. In this period of storage, population of the two bacteria was 106 cfu/g formulation.

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