Jurnal Ilmu Pertanian Indonesia
ISSN : 08534217     EISSN : 24433462
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.
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Penggunan Ethepon untuk Peningkatan Hasil dan Ukuran Rimpang Jahe (Zingiber officinale Rosc.) Var. Badak Wiroatmodjo, Joedojono
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Attempt to increase yield of 4-6 month old exportable ginger was tested by ethepon applications. This experiment was carried out at IPB Experimental Station Tajur from November 1988 - May 1989, with rates of application of 0, 10000, 20000, 30000, and 40000 ppm by volume. Sprayed plots were combinations of rice husk mulching (0 dan 5 ton/ha) and N fertilizations of 0,200 and 400 kg N/ha. Except for tuber weight and total production, the growth parameters were not influenched by ethepon. The best application of 10000 ppm markedly increased the fresh tuber weight by 91,8% per hill or 81,3% of the total yield.
Mekanisme dan Faktor Kimia yang Mendasari Resistensi Beberapa Varietas Padi Terhadap Wereng Batang Coklat Nilaparvata Lugens Stal (Homoptera: Delphacidae) Manuwoto, Syafrida; Adijuwana, Hendra
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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The brown planthopper (BPH) Nilparvata lugens Stal (Homoptera: Delphacidae) is one of the most important rice pest in Indonesia. Integrated pest management (IPM) is the only way of controlling the BPH. The use of resistant varieties is an important component of IPM. The development of BPH biotypes and agricultural practises cause the resistant varieties become susceptible in only 4-6 growing seasons. Understanding BPH - rice plant interactions are necesary. This greenhouse and laboratory studies were to unravel the mechanism and plant chemicals that might play a role in rice plant resistance of selected rice varieties: Cisadane, IR36, IR48, IR64, IR56, Kelara, and Bahbutong. Pelita I-I was used as susceptible check. The BPH colony originating from catches in 1986 in Yogyakarta was used in this study. Various experiments were carried out: evaluation of plant damage, the preference of BPH for feeding and ovaiposition, and population development study. The plants contens of protein, amino acids, water, potassium, calcium, and silica were measured. The mechanism of plant resistance to BPH on IR36, IR48, IR56, IR64, Kelara, and Bahbutong were identified as non-preference and antibiosis. The antibiosis mechanism was more prominent in IR48 and Bahbutong. The plant content of protein, potassium, calcium, and silica may take part in the basis of resistance mechanism. Further studies will be carried out.
Pengaruh Penggunaan Mulsa Dan Pengolahan Tanah Terhadap Aliran Permukaan, Erosi Dan Selektivitas Erosi Pada Latosol Coklat Kemerahan Darmaga Sinukaban, Naik; Sudarmo, .; Murtilaksono, Kukuh
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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The purpose of this study is to evaluate the effects of conservation and straw mulch applications on runoff, erosion, selectivity in a cropping pattern of groundnuts - filed corn. Tillage systems used were zero tillage and minimum tillage, while straw mulch application used were 0, 30, 60, and 90 percent coverage on Reddish Brown Latosol, Darmaga. This study was carried out in the planting season of 1088/1989 (November 1988 to 1989). Groundnuts (Pelanduk variety) was planted immediately after land preparation, just before the straw mulches were applied. Field corn (Arjuna variety) was planted right after the harvesting of groundnuts. Runoff and soil loss were recorded and some samples were collected for laboratory analysis. The data analysis shows that runoff were significantly decreased by the minimum tillage system and soil loss were significantly decreased by the increasing straw mulch application with a linier relationship. Straw mulch coverage of at least 60 percent reduced the soil loss by more than 50 percent. However, the increasing straw mulch applications were not significantly effective to reduce plant nutrient loss. This is due to the increasing selectivity of erosion process by the increasing straw mulch application.
Karakterisasi Deposit Mineral Zeolit Dalam Aspek Pemanfaatannya di Bidang Pertanian Sastiono, Astiana
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Agricultural extensification effort in Indonesia are almost always accompanied by a problem of low productivity land. This problem is caused by physical or chemical properties of the land, such as cation exchange capacity, base, pH, nutrient availability, and low water absorbtion capacity, while Al and Fe saturation are relatively high. Utilization of zeolite mineral is an alternative method besides lime in order to improve land quality, and to increase agricultural production. The aim of this research is to identify characteristics of zeolite from some deposits that have high relation to its uses as a cation - exchange substance or as an absorbent of water and nutrients. Zeolite of Bayah has the highest purity compare with that of Bojong and Gunung Dewi. The best heating - activation result according to X-ray diffractogram and zeolite CEC is the temperature between 150 - 300C, while dealumination-activation with HCI of0.2 - 0.5 N can improve zeolite capability as a cation exchange substance. Fraction coarser than 28 mesh to 60 mesh gives better utilization than that of finer ones. Fraction of 48 mesh with 150 - 300C heat treatment gives the highest absoptive capacity to water.
Karakterisasi Hidrologi dan Daur Limpasan Permukaan Daerah Aliran Sungai Ciliwung Pawitan, Hidayat; Sinukaban, Naik
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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This research was done following the general water balance equation Pg - E* = R in three stages: preliminary, hydrometeorology, and runoff analyses. Measurements of infiltrations were conducted on the upper Ciliwung basin at different land units and cumulative basin infiltration was computed, and erosion was predicted using the USLE method. From the hydrometeorology analysis it was concluded that variations of  the point rainfall was diminishing in the downstream-to-upstream direction, however the opposite was true for the spatial distribution. Heavy rainfalls occurred at an average of five events in January and 0,2 events in July. The Average intensity varied between 8 mm and 20 mm/hr, and rainfall durations varied between 3 to 5 hours. Prediction of annual cumulative infiltration yielded 70 to 74 percent of total rainfall, and erosions exceeding the threshold levels of 20 to 43 ton/ha/yr only occurred in the uplands, shrubs, and plantations which are about 50 percent of the upper basin areal. Basin runoffs showed excessive ratios in many instances and at all time scales: hourly, daily, and monthly, ranging between 10 to 100 percent of total rainfall. It is considered due to contributions from groundwater sources which might not be limited to the basin boundaries. Time of concentrations also varied widely, i.e. 0.4 to 3.3 hours for upper, 0.9 to 7.1 hours fo middle, and 1.6 to 15.5 hours for lower outlets.
Usaha Meningkatkan Produksi Daging Ternak Domba dan Kambing Melalui Peningkatan Kadar Protein Ransumnya Wiradarya, Tantan R
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
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Using 20 male lambs and 20 male kids of the local breed (about 4 to 5 months old, weighing about 8-10 kg), an experiment was conducted to study the respons of the sheep or goat to the grass-concentrate ration. The grass protein content was about 2 % and its gross energy content was about 4300 cal/gram dry matter. Three batches of concentrates was formulated to contain protein of 20, 30 and 40 % for lambs and 10, 20, and 30 % for kids (as fed basis) while their energy contents were maintained at about 3800 cal/gram dry matter. Two animals of each species were slaughtered at the beginning of the experiment to examine the initial carcass composition. The duration of the experiment was 4 months. The results indicated that as the protein of the ration increased, the daily protein consumption of both sheep (153 to 259 grams per animal) and goat (65 to 119 grams per animal), the price of ration per kg of body weight gain ($ 1.4 to $ 2.5) increased and the income over feed cost (1.2 to 0.7) decreased (P < 0.05). But its effect on the meat production performances of the animals were not significant.
Peranan Rekayasa Dalam Sistem Pemanfaatan Kayu Konstruksi di Indonesia Surjokusumo, Surjono; Nugroho, Naresworo
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
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Up to now the main problem wich always appears in timber construction design is that structural timber is not available readily in the market. A machine stress rating system called PANTER is practical and suitable to the social, economical and technological conditions f the Indonesian way of life, trying to reduce the gap between theory (design) and practice (implementation) of timber construction through structural timber procurement from sawn timber commercial as well as lesser known species in the market. The objective of the study of the role of engineering is to establish a supply system for structural timber in the frame os supporting the realization of a rational timber construction practice. The methodology approach is to identify and study problems related to the producer (sawmill industry) and the construction community (Perumnas or private enterprise) through stress grading activity in the field and to gather secondary data, followed with description and comparative analysis. The result of the study showed that from 2700 pieces of lumber which had been stress graded, consisted of sizes of 5/7, 5/10 and 6/12 cm/cm, were in the range of structural grade TS-7 up to TS-25 (82 %) with the rest of 9 % rejects and only 9 % falls under high strength category (TS-27 up to TS-25). It also was concluded that the stresses in the members produced from the design loadings could be arranged such that each member can function according to a standard size as well as its strength. Optimation using structural timber was achieved through size and stress grade arrangements, such that the needed members of a structural component could be adjusted to the availability of stress grade composition which exist in the field.
Antibodi Simian Aids Retrovirus (SRV) pada Kera Ekor Panjang (Macaca fascicularis) asal Indonesia Pamungkas, Joko; Joeniman, Bambang; Watanabe, Robin; Kuller, LaRene; Schmidt, Ann; Thouless, Margaret E; Morton, William R
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
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In 1986, Institut Pertanian Bogor
Pengaruh Kontak Antara Air Dengan Pasir, Tanah Liat, dan Arang Terhadap Sifat Fisik dan Kimia Air Saeni, M S
Jurnal Ilmu Pertanian Indonesia Vol 1, No 1 (1991): Jurnal Ilmu Pertanian Indonesia
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The Objective of the experiment..

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