Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
ISSN : 20852916     EISSN : 23373652
urnal Agronomi Indonesia, sebelumnya bernama Buletin Agronomi, terbit sejak 1962, diterbitkan oleh Departemen Agronomi dan Hortikultura Fakultas Pertanian, Institut Pertanian Bogor dan Perhimpunan Agronomi Indonesia (PERAGI). Jurnal Agronomi Indonesia merupakan media untuk publikasi tulisan asli yang berkaitan dengan budidaya tanaman secara luas, dalam Bahasa Indonesia maupun Bahasa Inggris. Naskah dapat berupa: hasil-hasil penelitian mutakhir (paling lama 5 tahun yang lalu), ulasan (review)singkat, analisis kebijakan atau catatan penelitian (research note) singkat mengenai teknik percobaan, alat, pengamatan, hasil awal percobaan (preliminary result).
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Kajian Pemupukan NPK dan Jarak Tanam pada Produksi Antosianin Daun Kolesom Mualim, Leo; Aziz, Sandra Arifin; Melati, Maya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The effects of NPK fertilization and plant spacing on leaf anthocyanin production of Talinum triangulare (Jacq.) Willd. were studied. A factorial experiment was used to study the combination of two factors i.e. NPK fertilization (no fertilization, NPK, NP, NK, and PK) and plant spacing (100 cm x 45 cm, 100 cm x 60 cm, 100 cm x 75 cm). These combinations were arranged in randomized block design, with three replications. The result showed that there was no effect of plant spacing and interaction between two factors. Application of NP (minus K) fertilizer gave the lowest value for almost all parameter except shoot/root ratio. This result suggested that fertilization played significant role in increasing anthocyanin production and the limiting factor was potassium.   Key words: Talinum triangulare, NPK  fertilization, anthocyanin production
Pengaruh Jenis Mulsa terhadap Pertumbuhan dan Hasil Tiga Kultivar Kentang (Solanum tuberosum L.) yang Ditanam di Dataran Medium Hamdani, Jajang Sauman
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objectives  of  the  experiment  were to study  growth and yield of three potato (Solanum tuberosum L.)  cultivars   planted at medium altitude with different  types of mulch. The experiment is located  at experimental  station of Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang at an altitude of about 680 m.  The experiment was arranged in a Randomized Completed Block Design with factorial pattern, consisting of two factors and three replications.  First factor was potato cultivar (Granola, Kennebec, and Panda), and the  second factor was types of mulch, consisted of three levels : without mulch, straw mulch, and silver black polyethylene mulch. The result of the experiment showed that Panda cultivar had highest dry weight (29.5 g/plant) and leaf area (2513.7 cm2), while Granola  cultivar had  highest number of tuber  per plant  (15.17 knol/plant ) and highest tuber weight per plant was  650.6 g/plant (30.3  t.ha-1). Straw and silver black polyethylene mulches increased leaf area, dry weight, number of tuber per plant and tuber weight per plant. The effect of  interaction betwen potato cultivar and source of mulch was significant on plant height.  Panda cultivar and silver black polyethylene mulch resulted the highest height of plant (68.2 cm).      Key words:  Potato cultivar, mulch, medium altitude
Efektivitas Strangulasi terhadap Pembungaan Tanaman Jeruk Pamelo ‘Cikoneng’ (Citrus grandis (L.) Osbeck) pada Tingkat Beban Buah Sebelumnya yang Berbeda Thamrin, Muhammad; Susanto, Slamet; Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Biannual bearing fruit is a common phenomenon in tropical fruit trees. However, effectiveness of flowering induction on those fruits is still lack of study. The ojective of the research was to study the effectiveness of flowering induction on pummelo of different fruit load on previous year. Field experiment was conducted at farmer´s orchad Bantarmara village, Cisarua, Sumedang Region, West Java (300 m above sea level) from August 2007 to April 2008. Experiment was carried out using Completely Randomize Block Design. Experiment was combination of high crop load and less crop load with strangulation position at main stem and primary branches. The results showed that crop load of previous year (higher and less) with strangulation position at primary branches had significant response to the number of  flower clusters, flower buds, bloming flower, fruits formed, and fruit sets as compared to control, when strangulated at primary branches. Nevertheless,  amount of fruit sets, level of greenness leaf and leaf area seened were not determined by fruit load non position of strangulation. This finding implies that fruit load management is an important factor in determining the success of flowering induction using strangulation.   Key words: fruit load, strangulation, pummelo, flowering induction
Optimasi Dosis Pemupukan pada Budidaya Cabai (Capsicum annuum L.) Menggunakan Irigasi Tetes dan Mulsa Polyethylene Alviana, Vivit F.; Susila, Anas D.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Chili peper (Capsicum annuum L.) var. Prabu was grown with polyethylene mulched and drip irrigation system on Andosol Sukamantri soil with low pH (4.5), low C-Organic (1.79%), low N-total (0.18%), high K content (0.76 me/100 g), and very high soil P2O5 concentration (190 ppm) to optimise fertilizer rate for drip irrigated and polyethylene mulched crop management system. This research was conducted from March - July 2004 at Danasworo Hydrogarden Ciapus Bogor. This research was arranged in Randomized Completely Block Design with four levels of fertilizer rate (0=control; 1x recommendation rate =151 kg N/ha, 69 kg P2O5/ha, 120 kg K2O/ha; 2x recommendation rate = 302 kg N/ha, 138 kg P2O5/ha, 240 kg K2O/ha; 3x recommendation rate = 453 kg N/ha, 207 kg P2O5/ha, 360 kg K2O/ha). Hundred percent of P, 50% N and K were applied pre-plant and 50% N and K were fertigated 10 times. The result showed that plant height and plant dry weight increased linearly with fertilizer application from 0 to 3x recommendation rate. Total marketable yield was quadratically increased with fertilizer application from 0 to 3x recommendation rate. Base on total marketable yield, optimum recommendation rate for chili with drip and polyethylene mulch were 237.07 Kg N/ha, 108.33 Kg P2O5/ha, and 188.4 Kg K2O/ha.   Key words :  Chili, fertilizer, drip irrigation, polyethylene mulch, fertigation
Agronomic Performance of Corn Population Selected for Nutrient Efficiency in Marginal Land Hayati, Renih; Munandar, ,; Lestari, Fitria K. S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Low soil fertility is the most important factor constraining corn (Zea mays L.) yield in marginal land due to soil acidity.  Corn cultivars with high nutrient efficiency and tolerance to soil acidity offer an alternative to solve the problem.  A Complex population had been formed by natural crossing among six cultivars/line expected to carry the nutrient efficiency character; Sukmaraga, Lamuru, Srikandi Kuning, Bisma, Bayu, and Toray and used as a genetic material in this study.  The objectives were (i) to evaluate the agronomic performance of complex population in marginal land under limited nutrient supply, (ii) to select the superior entries in each population for nutrient efficiency, and (iii) to identify the characters relate to yield (nutrient efficiency).  The selection of nutrient efficiency was based on the ear dry weight produced per plant (yield).  The experiment was conducted in marginal land at Agro Techno Park, Indralaya, South Sumatra in January to April 2008.  Randomized Complete Block Design with four replications was used.  The treatment was number of entries that grouped into six populations based on a female parent.  Plants were fertilized with Urea, SP-36, and KCl at 30% of standard rate.  Sukmaraga population had the best agronomic performance among six populations evaluated. The superior entries selected were top 10% of the total entries in each population with ear weight more than 150 g. All the characters (ear length and diameter, plant height, leaf chlorophyll, leaf numbers above the ear, and ear leaf area) related to yield (nutrient efficiency) but plant height is the only character measured before anthesis.  The results suggest that Sukmaraga population had use nutrient more efficiently than the other populations and plant height may be used as selection criterion in early screening large numbers of corn entries or lines for nutrient efficiency.        Key words:  Agronomic characters, corn, marginal land, nutrient efficiency
Simpanan Biji Gulma dalam Tanah di Perkebunan Teh pada Berbagai Tahun Pangkas Santosa, Edi; Zaman, Sofyan; Puspitasari, Intan Dewi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Through understanding on seed bank, tea plantation manager enables to plan better weed control. The objective of the study was to identify seed bank of weeds at different ages of tea plantation after prunning. The study was conducted at Perkebunan Teh Tambaksari, Subang, Indonesia. Soil samples were collected from tea field of different pruning years (TP0-2 months after pruning, TP1-16 months after pruning, TP2- 28 months after pruning, and TP3-40 months after pruning) and then watered regularly and exposed to direct sunshine to stimulate propagule germination. Results showed that seed banks were found in all soil samples, indicated that effectiveness of weed control was low. The highest seed bank was found at TP1. Most seed bank was seed, they were Ageratum conyzoides which dominated field of TP0 (SDR 36.58%), TP1 (35.90%), TP2 (41.79%) and TP3 (24.82%), followed by Borreria latifolia with SDR values were 19.50%, 27.26%, 29.40% and 16.14%, respectively. Some species stored both vegetative and generative propagules such as Cyperus sp. and Cyperus cyperoides with SDR value 20.33 % only dominated at age of TP0. Seed bank at area of TP1 and TP2 had high value of community coefficient, i.e., 77.22%, showed both fields had high similarity. This finding implies that effective weed control increases when the control is conducted before the weeds bear seed, where mostly less than 45 days after emergence. Furthermore, thirteen weeds had no seed bank in the field, indicates that weed problem in tea plantation was composed of seed bank and weed propagules from other sites.   Key words:  Pruning year, seed bank, tea plantation, weed control
Analisis Generasi F2 dan Seleksi Pertama dari Persilangan Kedelai antara Kultivar Slamet dan Wase Suharsono, ,; Jusuf, Muhammad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The research had an objective to analyse the population of F2 and first selection (S1) generations of the cross between soybean cultivar Slamet and Wase. The ultimate goal of this research is to obtain the elite cultivars of soybean having high yield, big seeds, and tolerant to acid and aluminum stresses. The genetic variance and heritability in the broad sense of all characters observed of F2 population were very high. The seed productivity of F2 population was higher than that of Slamet and Wase cultivars. The size of seeds of F2 population was bigger than that of Slamet and comparable to that of Wase. The heritability in the broad sense of all characters of F2 population was very high because the maximum segregation occurs in F2 and the two parents had a very different genetic back ground. By using 7.5% selection intensity based on productivity, we got selected F2 population having productivity two times than that of Slamet. Seeds of this selected F2 population were bigger than that of F2 population and cultivar Slamet. The S1 population had seed productivity higher than Slamet and Wase cultivars. The heritability in the broad sense of all characters of S1 population was smaller than that of F2 population caused by the selection. The selection by 4.8% intensity resulted the selected S1 population having productivity three times than that of cultivar Slamet and big seeds. The selected S1 population had a phenotype variance of productivity smaller than S1 population. Therefore, the selected S1 population is very potential to be developed as elite soybean cultivars.   Key words: soybean, genetic variance, heritability, selection, F2 population
Induksi Mutasi pada Stek Pucuk Anyelir (Dianthus caryophyllus Linn.) melalui Iradiasi Sinar Gamma Aisyah, Syarifah Iis; Aswidinnoor, Hajrial; Saefuddin, Asep; Marwoto, Budi; Sastrosumarjo, Sarsidi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

It has been a common knowledge that LD50 is commonly used in estimating optimal doses of gamma irradiation in a breeding program. This research was aimed at observing radiosensitivity of five carnation´s genotypes to gamma irradiation, to find the LD50 of carnation´s cuttings, and to obtain solid mutants from five numbers of Carnation.  For cuttings, carnation genotype number 10.8 was the most insensitive to gamma rays, whereas number 24.15 was the most sensitive one.  LD50 of carnation´s cuttings were obtained around 49 -72 gray. There were 19 mutants produced from this treatment. The desired mutans were mostly produced from the treated 24.1 genotype whereas the character mutans were mostly observed in MV2 generation. Irradiation treatment on genotype 24.1 produced most stabile mutans while the less was in genotype 24.14.  The produced mutants were qualitatively different in colour and petal shape, and stabile till third generation.   Key words: LD50, gamma irradiation, induced mutation, carnation.
Evaluasi Galur Haploid Ganda Pelestari Hasil Kultur Antera untuk Perakitan Galur Mandul Jantan pada Padi Rumanti, Indrastuti A.; Dewi, Iswari S.; Purwoko, Bambang S.; Aswidinnoor, Hajrial
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Hybrid rice has been proven to be the key factor to increase food supply in highly populated countries such as China and India. The success has encouraged the government of Indonesia to intensify research and development on hybrid rice using cytoplasmic-genetic male sterility system. The use of good male sterile line is a prerequisite for commercial seed production of hybrid rice.  The objective of this research was to evaluate several F1 plants to develop completely sterile cytoplasmic male sterile line (CMS) with good agronomic characters.  This research was conducted at screen house of Bogor Agricultural University during dry season (DS) of 2007.  Fourty eight F1s, derived from testcross between cytoplasmic male sterile sources with doubled-haploid (DH) maintainer lines, were evaluated in randomized complete design using three replications.  Observation was done on pollen sterility, panicle and stigma exsertion, plant height, and tillering ability.  The results showed 14 F1s were completely sterile (100 % pollen sterility).  They were A-2/H36-3-Ma, A-1/H36-3-Mb, A-2/H36-3-Mb, A-3/H36-3-Mb, A-1/H36-4-M, A-2/B1-1-Mb, A-3/B1-1-Mb, A-1/B1-2-Pa, A-2/B1-2-Pb, A-3/B2-1-M, A-1/B2-4-Pb, A-3/B4-1-Da, A-1/B4-1-Dc, and A-3/B4-1-Dc.  They also had early flowering date, averaged from 66 - 90 days after planting (DAP).  There were other 14 F1s with stigma exsertion more than 70 % and good panicle exsertion, i.e.  A-2/H36-3-Mb, A-1/H36-3-Mc, A-2/H36-3-Mc, A-1/H36-4-M, A-2/B1-2-Pa, A-2/B1-2-Pb, A-3/B2-1-Db, A-1/B2-1-Dc, A-1/B2-1-M, A-1/B2-4-Pb, A-3/B2-4-Pb, A-2/B4-1-Da, A-1/B4-1-Dc and A-3/B4-1-Dc.  However, only five F1s had all desirable characteristics as male sterile line candidates, such as 100% pollen sterility, good panicle exsertion, high stigma exsertion, semi-dwarf in plant height and good tillering ability.  They were A-1/H36-4-M, A-2/B1-2-Pb, A-1/B2-4-Pb, A-1/B4-1-Dc, A-3/B4-1-Dc.   Key words:  Doubled-haploid maintainer lines, CMS, pollen sterility, hybrid rice
Pengaruh Bahan Amelioran terhadap Pertumbuhan dan Hasil Tiga Varietas Buncis di atas Sistem Surjan pada Lahan Sulfat Masam Potential Koesrini, ,; William, Eddy
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

High soil acidity is one of the problems causing low snap bean yield on potential acid sulphate soils. Using tolerant variety and applying ameliorant were several efforts to increase snap bean yield on potential acid sulphate soils. The objective of this research was to evaluate the effect of ameliorant application on plant growth, and yield of three snap bean varieties on potential acid sulphate soils. This research was conducted on potential acid sulphate soil on surjan system at Experimental Station Belandean in Barito Kuala regency of South Kalimantan province in the dry season of 2005. The experiment was arranged in split-plot design with three replications. The main plots were ameliorant application, i.e. control, liming 1 t.ha-1 + manure 2.5 t.ha-1 , and liming 2 t.ha-1 + manure 5 t.ha-1, and the sub plots were three snap bean varieties, i.e. Lebat, Perkasa and Bravo. The result showed that the plant growth and yield of snap bean were affected by ameliorant application. Liming  with dosages of 1.0 t.ha + manure 2.5 t.ha-1 increased yield 2 581 kg.ha-1 or 81.5 % higher than control. All varieties showed the same yield on acid sulphate soil.   Key words:  Ameliorant, snap bean, potential acid sulphate soil

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