Jurnal Ilmu Pertanian Indonesia
ISSN : 08534217     EISSN : 24433462
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Karakterisasi 10 genotipe jarak pagar (Jatropha curcas L.) lokal Surahman, Memen; Murniati, Endang; ., Misnen
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

This study aimed to obtain genotypes of local jatropha has the potential to be developed through the characterization based on quantitative and qualitative characters. The experiment was conducted in August 2009-April 2010 took place at the experimental PT. Indocement, Citereup-Bogor. Materials used jatropha cuttings from 10 genotypes (Banten, Medan, Biak, IP-2P, Bengkulu, Sukabumi, Bali, Sulawesi, Bogor, and Lombok). The observed character is the character of quantitative and qualitative. The results showed 10 genotypes Jatropha tested has the color green of young stems and old stems green color gray. The color ofshoots is green, and coloor of old leaf is dark green.The color of leaf bones is purple and green, leaf textureis coarse, and leaves bones clearly visible. Genotype that has hermaphrodite flowers are Banten, Biak, Bengkulu, and Sukabumi. The best genotype was Banten with leaf number 74, branch height 48 em, number of panicles 1 plant 12.2, the number of fruits I plant 110.5, wet seed weight I plant 288.7 g, and dry seed weight I plant 193.8 g. Variables wet seed weight I plant is a selection of characters that can be used to increase the yield of dry seed weight 1 plant. Another character that indirectly affect significantly positive effect on dry seed weight of stem diameter, leaf number, number of fruits per panicle, and number of fruit I plant. Selection on vegetative characters can not be used as selection criteria.Keywords: Jatropha curcas, the character of quantitative, qualitative character, selection.
Studi metode invigorasi pada viabilitas dua lot benih kedelai yang telah disimpan selama sembilan bulan ., Nurmauli; Nurmiaty, Yayuk
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Invigoration is one method to solve the problem of overdue seeds. Seeds are treated before planting to stimulate the metabolism activities inside the seeds so that seeds are equipped to emerge. Invigoration method could be applied using osmo-conditioning (Polyethylene Glycol (PEG-6000) solution) or matriconditioning, and hydrate-dehydrate treatment. Invigoration started when seeds imbibe in a solution with low water potential until seed water content could be reserved after its equilibrium.This study was conducted in Seed technology and breeding laboratory, Faculty of Agriculture, Lampung University in June 2009. Seeds testing with osmoconditioning including: (1) hydrate-dehydrate treatment with aqua bides and {2) immersed into Polyethylene Glycol (PEG) with 10 and 20°/o concentration. Observations were including: seeds emerge ability, sproutidentical growth, dry mass of normal seeds, and electrical conductance. All data were analyzed, described and presented with statistical methods and with histogram. The results showed that: {1) Anjosmoro soybean seeds status which were overdue during storage were moderate stability which were showed by emerge viability observation (
Pengaruh pemberian pupuk NPK dan kompos terhadap pertumbuhan semai jabon (Anthocephalus cadamba Roxb Miq) pada media tanah bekas tambang emas (tailing) Wasis, Basuki; Noviani, Dwita
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Tailings is one of the waste generated in the gold mining activities that contain nutrients are low. One of the principles for the management of tailings is merevegetasi land disturbed so that the necessary selection of the type that can be developed, in this case Jabon (Anthocephalus cadamba Roxb Miq.) Is one type that is recommended to be developed in the post-mine land revegetation because it is a type of fast-growing and has a high adaptability to various soil types. Experimental design used in this study was factorial design with two factors. The first factor is fertilizer NPK with 4 level and the second factor is the compost with 4 level. The best dose of the combination of the two fertilizer on the growth of seedlings jabon is high NPK fertilizer with compost dose of 15 grams and 10 grams and diameter growth for seedlings jabon, the best dose is the dose of 15 grams of NPK fertilizer and compost 0 grams.Keywords: Jabon, fertilizer, NPK and compost, growth.
Efektivitas 3 spesies lebah madu sebagai agen polinasi untuk meningkatkan produktivitas (>40%) biji jarak pagar (Jatropha curcas) pada ekosistem iklim basah ., Kasno; Hasan, A.E. Zainal; Efendi, Dedi Sholeh; ., Syaefuddin
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The physic nut (Jatropha curcas) is one of potential plant for producing biodiesel, however efforts to socialization have still encounter constraints. The production system so far has not come to a level of attractive to the fellow farmers due to low productivity. Therefore further researches on production system are still urgently needed. This research entitled "The effectiveness of Three Species of Honey Bees as Pollinating Agent to Increase Seed Productivity" was carried out at Pakuwon, Sukabumi. The study site is a physic nuts seeds production center. The immediate objectives of the research was to identify the indirect impact of pollination of honey bees on physic nut farm on increasing its seed productivity while the further objective was to increase formers income. To achieve the immediate objective of the research, a set of experiment was conducted. Three species of honey bees namely Apis mellifera, Apis cerana and Trigona iridipenis were tested as pollinating agent to flowering physic nut plants under screen coverage. The size screen cover was 8 m long, 4 m wide and 2.5 m to cover 32 flowering physic nut plants. The treatment consisted of one and two colonies of honey bee species were released into each screened plot for 3 weeks. The untreated plot has no bee colony. The treatment was replicated 3 times. Complete Randomized Design procedure was followed in the experiment. Fruit sampling was done50-55 days after colonies placement. Results of the first year experiment shows that honey bees as pollinatingagent, especially A . cerana and A. mellifera provide significant positive indirect impact on seed productivity ofphysic nut plants. Assuming the market price of seed is not decreasing, such increase of seed productivity mayalso increase farmers income from selling the harvested seeds.Keywords : Jatropha, productivity, honey bees, pollination.
Tebang pilih tanam jalur : pemodelan pertumbuhan tanaman meranti pada jalur tanam ., Wahyudi; Indrawan, Andry; Mansur, Irdika; Pamoengkas, Prijanto
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Selective Cutting and Line Planting (SCLP) silvicultural system can be applied in the logged over forest and low potential forest to improve their productivity . The research was aimed to create the growth modelling of Shorea plantations in the line planting system. The research was conducted at research plots of SCLP in logged over forest of PT Gunung Meranti, Central Kalimantan Province. The research plots were divided into three plots of Shorea Jeprosula plantation that planted in 1994 as plot 1, year 1999 as plot 2 and year 2008 in which consisted of 200 samples of trees, respectively. Data of Shorea Jeprosula growth were evaluated by Stella 9.0.2 and SPSS 13, and predicted using table of volume, exponential and polynomial equations. The research result showed that exponential equation was y= 1,0269.e0,012x (R2= 96,02%) and estimated cutting cycle at 37 year old, average polynomial equation was y=0,0297x2 + 0,8208x + 0,3728 (R2= 86,89%) and estimated cutting cycle at 30 year old and group polynomial equations (R2> 95%) estimated cutting cycle at 32 years old. The best model was group polynomial equations that represented exponential equation and average polynomial equation in the yield of volume.  Keywords : Selective cutting and line planting system, Shorea leprosula, exponential and polynomial equations.
Pendugaan biomassa dan potensi karbon terikat di atas permukaan tanah pada hutan rawa gambut bekas terbakar di Sumatera Selatan Widyasari, Nong Ayu Eka; Saharjo, Bambang Hero; ., Solichin; ., Istomo
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Forest has an important role to absorb C02 which is used during photosynthesis to produce 02 and energy. Carbon was stored dominantly in biomass. When peat forest burnt, a lot of carbon emissions are acumulated in the atmosphere, which stimulate global warming. This study aims to estimate biomass and fix carbon contain in ex-burned merang peat forest and make models between biomass and fix carbon of various tree component (stems, branches, twigs and leaves) and also to calculate fix carbon and biomass stock in burned merang peat forest. The results show that biomass and fix carbon in burned merang peat forest can be estimated using allometric equation models: Wtotal = 0.153108 D2,40 and Ctotal = 0,0302 D2,35•  Fix carbon stock in the trees very related to biomass and it can be calculated using formula Ctotal = 0.188799 W0,980•  Stems store largest proportion of biomass in a single tree. They contribute to approximately 68.09 - 82.28% of total tree biomass. Leaves, twigs and brunch each contribute to 4.17 -  14.44%;  6.16 - 10.32%  and  7.15 -  7.45 respectively.  Fix carbon of trees can be estimated using biomass formula. It shows that each tree shares 16.49 - 17.70°/o of carbon from total biomass in average. Total biomass and fix carbon on the above ground of burned Merang peat forest are 151,650.48 kg/ha and  29,105.19 kg/ha respectively.   Keywords : Biomass, fix carbon, carbon stock, allometric equation, peat swamp forest.
Pendugaan biomassa karbon di atas tanah pada tegakan Rhizophora mucronata di Ciasem, Purwakarta Dharmawan, I Wayan Susi
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Indonesia has a lot of potential natural forests, whether still intact or logged forest. Hish concentration of C02 in atmosphere is one of the factors which cause global climate change in the world. Development and maintenance of forest vegetation such as mangrove forest is one of waysreducing atmhosper Rhizophora biomass stand was conducted. The research was implemented at BPKH Ciasem, KPH Purwakarta, Perum Perhutani unit III Jawa Barat and Banten. From the destructive sampling activity in the field the following allometric models was obtained for above ground biomass Y = 0,1466(DBH)2,3136 (R2=0,936). Stand of Rhizophora mucronata at BKPH Ciasem had potency of above ground biomass and above ground carbon content of 77.2 ton/ha and 38.6 ton/ha, respectively. Related with above ground biomass, the uptake of CO2 and uptake of average C02 of Rhizophora mucronata were 141.5 ton/ha and 0.251 ton/tree. Keywords : Mangrove forest, Rhizophora mucronata, above ground biomass
Uji adaptasi varietas unggul dan galur harapan padi umur sangat genjah pada musim kemarau dan musim hujan di kabupaten Sragen, Jawa Tengah Suhendrata, Toto
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The study was carried out in the Village Gondang, Sragen Regency Central Java in the dry season (JuneOctober 2009) and in the wet season (October 2009 -January 2010). The design of the study using a randomized block design with six replication. Treatments consisted of two rice varieties and three rice elite lines very short maturity i.e. varieties Silugonggo, Inpari 1 and rice elite lines OM 1490, OM 2395 and 811283. The results of the study indicated that (i) harvesting of OM 1490 and OM 2395 in the wet season were shortern than harvest age in the dry season, while harvesting a variety Silugonggo and Inpari 1 in the wet season were longer than the harvesting in the dry season, (ii) Silugonggo, Inpari 1 , OM 1490, OM 2395 and 811283 adaptive and productive planted in the irrigated lowland, especially in the dry and wet seasons. Productivity in the dry and in the wet seasons were Inpari 1 (9.2 and 8.4 t/ha), Silugonggo (9.3 and 8.2 t/ha), OM 1490 (9.5 and 8.1 t/ha), OM 2395 (8.9 and 7.7 t/ha) and 811283 in the wet season (8.1 t/ha) dried grain, (iii) productivity in the dry season were higher than in the wet season. The average productivity was different between that in the dry and in the wet season were Silugonggo 1.1 t/ha, Inpari 1 0.8 t/ha, OM 1490 1.4 t/ha, and OM 2395 1.2 t/ha dried grain ordecreased of productivity between 8.70 -14.74%, and (iv) Inpari 1 and OM 1490 more preferred of the farmerscompared Silugonggo and OM 2395.Keyword : Variety, rice elite line, shot maturity, productivity
Bioprospeksi ekstrak jahe gajah sebagai anti-crd: kajian aktivitas antibakteri terhadap Mycoplasma galliseptikum dan e. coli in vitro Rahminiwati, Min; P., Aulia Andi Mustika; Saadah, Siti; ., Andriyanto; ., Soeripto; P., Unang
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

CRD is chronic respiratory disease in chicken caused by infection of Mycoplasma gallisepticum (M gallisepticum) and E. coli. Rio-prospective of jahe for controlling the disease was investigated through the study of antibacterial activity against M. gallisepticum of fresh ginger juice extract and fraction of hexan, ethyl acetate, methanol and water against M. gallisepticum and E. coli. The results showed that the juice of fresh ginger inhibited the growth of M. gallisepticum with the minimum inhibitory concentration that could inhibit the growth was 10 °/o. The fractions that effectively inhibited the growth of M. gal/isepticum are hexan fraction and water fraction with the smallest inhibition zone was found at concentration of at least 8 % and 10 %respectivelly.TLC examination results of hexan fraction showed a purple spot with Rf value of 0.9 and a dark bluespot with Rf value of 0.36. Based on Rf values and color reference, the first spot was suggested zingiberen andthe second spot was gingerol. All fractions that were examined, did not show any inhibitory activity against thegrowth of E coli. Thus the extract of fresh ginger was only to be used to control the respiratory disease causedby M. gallisepticum but not coli.Keyworld : Mycoplasma gallisepticum, E. coli, Zingiberen, Gingerol.
Efektivitas 3 spesies lebah madu sebagai agen polinasi untuk meningkatkan produktivitas (>40%) biji jarak pagar (Jatropha curcas) pada ekosistem iklim basah Kasno, .; Hasan, A.E. Zainal; Efendi, Dedi Sholeh; Syaefuddin, .
Jurnal Ilmu Pertanian Indonesia Vol 15, No 1 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The physic nut (Jatropha curcas) is one of potential plant for producing biodiesel, however efforts to socialization have still encounter constraints. The production system so far has not come to a level of attractive to the fellow farmers due to low productivity. Therefore further researches on production system are still urgently needed. This research entitled "The effectiveness of Three Species of Honey Bees as Pollinating Agent to Increase Seed Productivity" was carried out at Pakuwon, Sukabumi. The study site is a physic nuts seeds production center. The immediate objectives of the research was to identify the indirect impact of pollination of honey bees on physic nut farm on increasing its seed productivity while the further objective was to increase formers income. To achieve the immediate objective of the research, a set of experiment was conducted. Three species of honey bees namely Apis mellifera, Apis cerana and Trigona iridipenis were tested as pollinating agent to flowering physic nut plants under screen coverage. The size screen cover was 8 m long, 4 m wide and 2.5 m to cover 32 flowering physic nut plants. The treatment consisted of one and two colonies of honey bee species were released into each screened plot for 3 weeks. The untreated plot has no bee colony. The treatment was replicated 3 times. Complete Randomized Design procedure was followed in the experiment. Fruit sampling was done 50-55 days after colonies placement. Results of the first year experiment shows that honey bees as pollinating agent, especially A . cerana and A. mellifera provide significant positive indirect impact on seed productivity of physic nut plants. Assuming the market price of seed is not decreasing, such increase of seed productivity may also increase farmers income from selling the harvested seeds.

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