Jurnal Ilmu Pertanian Indonesia
ISSN : 08534217     EISSN : 24433462
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Klasifikasi Kopi Bubuk Spesialti Kalosi dan Toraja Menggunakan UV-Visible Spectroscopy dan Metode PLS-DA Suhandy, Diding; Yulia, Meinilwita
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (818.1 KB) | DOI: 10.18343/jipi.24.1.73

Abstract

 Specialty coffee is sold in a very expensive price. Specialty coffee is usually consumed as a single origin (without mixed with other coffee). For this reason, the detection of impurities (authentication) in specialty coffee is a very important process to be performed. In this study, UV-visible spectroscopy combined with PLS-DA method were used to discriminate between two specialty coffees from South Sulawesi (Kalosi and Toraja). A number of 100 ground roasted coffee samples were used for Kalosi and Toraja, respectively (1 gram each sample). A standard aqueous extraction procedure of the coffee samples using distilled water was performed and the spectral data of aqueous samples of Kalosi and Toraja coffee were acquired in transmittance mode using a UV-Visible spectrometer (Genesys™ 10S UV-Vis, Thermo Scientific, USA). The result showed that using PLS-DA method, all prediction samples were correctly classified into their corresponding classes with 100% rate for sensitivity, specificity, and accuracy, respectively.
Kajian Sistem Tanam Usaha Tani Padi Gogo di Lahan Kering Kabupaten Boyolali, Jawa Tengah Sahara, Dewi; Kushartanti, Ekaningtyas
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (423.153 KB) | DOI: 10.18343/jipi.24.1.65

Abstract

This study aimed to determine the feasibility of upland rice farming, the breakeven point of price and production, and the ratio of increasing profit of the jajar wayang to double row planting system. The study was conducted in Singosari Village, Mojosongo Sub-District, Boyolali District during rainy season in 2016/2017. The study of upland rice planting system was demonstrated on 4 ha of dry land, using Inpago 8 and Inpago 9 varieties which were planted in double row and jajar wayang system. The data were analyzed descriptively both qualitatively and quantitatively. The results of the analysis showed that the Inpago 9 variety grown in double row gave the highest productivity (5.5 tons/ha) compared to the Inpago 8 variety and the other cropping systems so that the profit obtained was IDR13.552.000/ha (RCR=2.99). Break even point analysis of prices and production showed that if there was a decrease in prices and production of 57.39-66.59%, the farmers did not suffer losses. Changes in the planting system from jajar wayang to double row provided a proportion of increase in profits in Inpago 8 varieties by 18.79% and in Inpago 9 varieties by 7.71%, indicating NKB value of 1.24 and 1.09. Therefore, the productivity of upland rice on dry land can be increased with double row planting system.
Komparasi Posisi Pasar antara Indonesia dan Malaysia pada Pasar Refined Palm Oil (RPO) Amerika Serikat Aulia, Risnayanti Ulfa; Harianto, .; Novianti, Tanti
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (450.856 KB) | DOI: 10.18343/jipi.24.1.48

Abstract

United States is one of the major importer countries of Refined Palm Oil (RPO) and its imports increase about 21.25%/year because of a high domestic consumption. The main sources of US RPO’s import are Malaysia and Indonesia with shares of 70.21 and 27.29% respectively. The purposes of this research are to 1) Estimate the factors affecting RPO’s import in the United States and 2) Analyze themarket position and competition between Indonesia and Malaysia in the RPO market in the United States. The methods used were linear regression using Ordinary Least Square (OLS) and Almost Ideal Demand System (AIDS) model. Factors affecting RPO import in US market are the import price of RPO and RSO, GDP, and dummy Non-Tariff Measures (NTM). In US market, teh RPO from Indonesia and Malaysia are substitute each other and Indonesia’s RPO are more sensitive (elastic) to prices and expenditure compared to Malaysia’s RPO in the US market.
Studi Potensi Penggunaan Daun Mengkudu (Morinda citrifolia L.) sebagai Bahan Antibakteri Escherichia coli dan Salmonella typhimurium Halimah, Hafni; Suci, Dwi Margi; Wijayanti, Indah
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (241.708 KB) | DOI: 10.18343/jipi.24.1.58

Abstract

The aim of this study was to evaluate the potential use of Noni (Morinda citrifolia L.) leaves as an antibacterial agent for Escherichia coli and Salmonella typhimurium. Noni leaves are processed with four methods i.e., mealing, blending, juicing, and decocting. The data obtained were analyzed descriptively. The variables measured were phytochemical analysis and antibacterial activity through bacterial inhibitory test. Qualitative test was used for phytochemical analysis and quantitative analysis was used for antibacterial of noni leaves. The antibacterial activity of noni leaves with diffusion well method used 4 concentrations i.e., 2.5; 5; 7.5; and 10% and extracted by maceration with 4 solvents i.e., water, ethanol, ethyl acetate, and hexane. The results showed that the processing of Noni leaves produced various active compounds. The noni leaves meal produces a more active type of compound group compared to 3 other treatments. Antibacterial tests against Escherichia coli were not seen in all noni leaves processing, but were seen to positively inhibit Salmonella typhimurium in the extraction process of Noni leaves meal using ethanol and ethyl acetate solvents at 48 hours maceration. The conclusions of the results showed that noni leaves meal extract using ethanol and ethyl acetate macerated for 48 hours was able to inhibit Salmonella typhimurium bacteria.
Pengaruh Pemberian Pelet dari Lumpur Kolam Ikan dan Kotoran Kambing pada Pertumbuhan dan Produksi Jagung Manis Santari, Putri Tria; Hartono, Arief; Suwarno, .
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (194.895 KB) | DOI: 10.18343/jipi.24.1.41

Abstract

A mixture of fishpond sediment and goat manure can be used to increase the growth and yield of sweet corn. This research aimed to determine the effect of pellet from the combination of fishpond sediment and goat manure with a ratio 1:1 on nutrient (N, P, and K) and yield on sweet corn. The land used was Ultisol Dramaga which was located in Cikabayan Experimental Farm, Bogor Agricultural University. The study was conducted in a greenhouse with a Completely Randomized Design (CRD) of one factor with eleven treatments: without treatment (control); standard fertilization (Urea 0.43 ton ha-1, SP-36 0.41 ton ha-1, and KCl 0.25 ton ha-1); three doses of pellet (20 ton ha-1, 30 ton ha-1, and 40 ton ha-1); three doses of fishpond sediments (10 ton ha-1, 15 ton ha-1, and 20 ton ha-1); three doses of goat manure (10 ton ha-1, 15 ton ha-1, and 20 ton ha-1). The result showed that giving 40 ton ha-1 pellet had a significant effect on the increasing pH, ammonium, and the availability of K in Ultisol and nutrient content of P, K, and the weight of dry-grain sweet corn.
Respons Pemberian dan Penetapan Status Hara Si pada Tanaman Padi Amin, Mirawanty; Nugroho, Budi; Suwarno, .; Suryaningtyas, Dyah Tjahyandari
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (352.674 KB) | DOI: 10.18343/jipi.24.1.32

Abstract

The use of silica fertilizer still has been included in cultivation technology: however, nutrient status for paddy soil is rarely reported in Indonesia. It is necessary to carry out a research on the determination of nutrient status and the influence of silica fertilizer on rice production. The aims of this research are to investigate the effect trass on soil chemical properties, discover of silica fertilizer on rice production and determine the nutrient status of Si by Cate Nelson and Contiunous Curves. The results showed that the effect of trass has a significant on soil chemical properties such as pH H2O and available Si. The nutrient status of Si was estimated by using several different extractants namely H2O; CaCl2; Ammonium Acetate pH 4.8; and Acetate Buffer pH 4 gives a critical limit value of 13, 17, 34, and 37 mg kg-1, equivalent to 28 mg kg-1, 36 mg kg-1, 73 mg kg-1, and 79 mg kg-1 SiO2, respectively. Meanwhile, the Si availability in the medium class based on Continuous Curves Method extracted by H2O; 0.01 M CaCl2; NH4OAc pH 4.8; and Na-acetate pH 4 were 18-34, 33-41, 44-79, and 42-81 mg SiO2 kg-1, espectively. Burned trass with dose of 10 g kg-1 gives the highest rice production of 44.19 g pot-1 equivalent to 7.07 ton ha-1.
Efektivitas Beberapa Jenis Ikan dalam Mengonsumsi Eceng Gondok (Eichhornia crassipes (Mart) Solms.) di Danau Tondano, Kabupaten Minahasa Kambey, Rama Presley; Shirley Elisabeth Mantiri, Rose Olivia; Lasut, Markus Talintukan
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (380.464 KB) | DOI: 10.18343/jipi.24.1.28

Abstract

This research was conducted to determine the type of fish that effectively consumed water hyacinth in Tondano Lake. This research was conducted during August to December 2017. To know the effectivenes of fish that consume water hyacinth is using grasscarp, silverbarb, marble goby, and snakehead gudgeon fish with size range of 10-30 cm were used. Aquarium size of 120 x 40 x 40 cm was used as tank equipped with camera for observation. The results showed that grasscarp effectively consume 3.2 g of water hyacinth per day.
Uji Aktivitas Lakase dan Selulase pada Lignoselulosa Gambut dengan Berbagai Kadar Air Mulyawan, Ronny; Indriyati, Lilik Tri; Widiastuti, Happy; Sabiham, Supiandi
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (493.74 KB) | DOI: 10.18343/jipi.24.1.20

Abstract

The degradation of lignocellulose as the main constituents of peat is catalyzed by enzymes such as laccase or cellulase. The purpose of this research was to study the pattern of laccase and cellulase activities on sterile and non-sterile peat materials at three different water contents (125-175, 225-275, and 325-375%). The peat soil used was collected from oil palm rhizosphere in Riau Province. This research used the descriptive method by comparing the mean values between treatments. The results showed that enzymes activities on sterile and non-sterile peat added with laccase or cellulase were higher compared to those without enzyme addition. The highest laccase activity was at the first day of incubation, while that for selulase was at the 10th days of incubation. The activity of enzyme then decreased with the increase in the respected incubation time. The difference in decreasing of lignin and cellulose content at 125-175% water content was higher than at the other water contents. The decreases in lignin and cellulose contents were higher by addition of respected enzymes both in sterile and non-sterile peat. It could be concluded that at higher water content, laccase and cellulase activities were depressed both on sterile and non sterile peat, especially after the addition of enzyme.
Kualitas Pemesinan Kayu Punak (Tetramerista glabra Miq.) Menurut Kedalaman Batang Supriadi, Achmad
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (321.164 KB) | DOI: 10.18343/jipi.24.1.12

Abstract

This paper presents the results of the quality of wood machining according to the depth of the stem. Testing of machining properties refers to modified ASTM D-1666-64. The results showed that the quality of wood machineries of the outside of the steam was fair to good and the inside of the steam was good to excellent. The fuzzy grain was most found. The quality of wood inside the stem is generally better than the outer wood. The depth of the stem has a significant effect on the value of defect free turning. Punak wood can be recommended to be processed into a variety of wood working products such as moulding, wood carvings, pegs, fence, the other items of turnings, panels, door components, tables, and wallcoverings.
Habitat dan Aspek Biologi Rajungan Angin, Podophthalmus vigil (Fabricus 1798) di Teluk Lasongko, Sulawesi Tenggara Hamid, Abdul
Jurnal Ilmu Pertanian Indonesia Vol 24, No 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (700.939 KB) | DOI: 10.18343/jipi.24.1.1

Abstract

The study was conducted in Lasongko Bay, Central Buton from May 2013-March 2014 with the aim of identifying habitat conditions, size distribution, growth pattern, sex ratio, and spawning season of Podophthalmus vigil (Fabricus 1798). Samplings were done monthly on six stations using a crab gillnet. The results of research showed that P.vigil were generally found on the substrate type of sand clay with the average depth range of 4.61-11.63 m and tended to be found in cloudy locations. The ranges of carapace width of male and female P. vigil were 4.13-12.39 cm and 4.75-11.64 cm, respectively. The result of Mann-Whitney test of body size showed that in P. vigil only carapace width that were found significantly different (P<0.05) between males and females, whereas the body weight and carapace length were not significantly different (P>0.05) between male and female. The growth pattern of the width carapace and body weight relationship in male P. vigil was negatively allometric, whereas in females was positively allometric. The growth patterns of the carapace length and body weight relationship in males and females P. vigil were isometric and negatively allometric, respectively. The sex ratio of P. vigil varied spatially-temporally with total sex ratio of 1:0.74. The spawning season of P. vigil did not last all year.

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