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).
Articles 9 Documents
Search results for , issue " Vol 34, No 1 (2006): Jurnal Agronomi Indonesia" : 9 Documents clear
Pengaruh Perlakuan Rizo-bakteri Pemacu Pertumbuhan Tanaman terhadap Viabilitas Benih serta Pertumbuhan Bibit Tanaman Cabai Sutariati, Gusti Ayu Kade; Widodo, Widodo; Sudarsono, Sudarsono; Ilyas, Satriyas
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objectives of this experiment were to evaluate effects of seed treatment using local isolates of rhizobacteria on seed germination and seedling growth of hot pepper. Hot pepper seeds were treated with rhizobacterium isolates of Bacillus sp., Pseudomonas sp., or Serratia sp. and germinated using standard germination procedures. Subsequently, seedlings were transplanted into plastic pots containing a mixture of potting media. Germination was recorded at 7 and 14 days while seedling growth were recorded at 6 and 8 weeks after transplanting. Results of the experiments showed seed treatments using rhizobacteria significantly increased viability of the treated hot pepper seeds (percentage of increases as compared to untreated seeds in seed germination  - up to 27%, PTM 11%, vigor index 31%, SPT 29%, KCT 29%, and reduction of T50 by 0.75 days). Some of the treatments also promoted growth of hot pepper seedlings. Although all of the rhizobacteria synthesized IAA, growth promoting effects of the rhizobacteria may not only be due to the synthesized growth regulator. Other factors may have involved in the possitive effects of the rhizobacteria on hot pepper seed germination and seedling growth.   Key words:  Rhizobacteria, indole-acetic acid, PGPR, vigor, viability, seedling growth
Keragaan Hasil Beberapa Galur Harapan Kacang Tanah di Lahan Sulfat Masam dan Lahan Lebak Dangkal Koesrini, ,; Noor, Aidi; Sumanto, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

High soil acidity is one of the problems caused low groundnut productivity on South Kalimantan. Using adaptive variety is one effort for increasing yield. The objective of this research was to determine the yield performance and tolerance of groundnut to soil acidity on swamp areas. This research was conducted on acid sulphate soil at Jajangkit Timur-Batola-South Kalimantan on wet season of 2003/04 and on swamp area at Setiap-Pandawan-Hulu Sungai Tengah-South Kalimantan on dry season of 2003. This research was arranged in Randomized Complete Block Design with three replications. Twelve genotypes and 3 check varieties i.e. Jerapah, Singa and Lokal variety, were tested on those regions.The result showed that some groundnut promising lines had good performance on acid sulphate soil and swamp areas. Performance of yield and its component  were influenced by soil environment, i.e. soil acidity, Ca content and Al saturated. The best five promising lines on acid sulphate soil were GH-3, GH-4, GH-5, GH-8 and GH-9, while on swamp area were GH-2, GH-5, GH-6, GH-9 and GH-11. Two promising lines, i.e. GH-5 and GH-9, performed better on both areas.   Key words: Performance, groundnut, swamp areas
Pengaruh Jenis Tanaman Penolak Organisme Pengganggu Tanaman terhadap Pertumbuhan dan Produksi Tanaman Kedelai (Glycine max (L.) Merr) yang Diusahakan Secara Organik Kusheryani, Ina; Aziz, Sandra Arifin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The purpose of this research is to determine the influence of repellent plant on growth and productivity of organic vegetable soybean. This research was conducted at Leuwikopo Research Station, from September 2004 to February 2005. Randomized Complete Block Design with one factor (type of repellent plant) and four replications was used. The type of repellent plant were Marigold (Tagetes erecta), Ocimum gratissimum, andropogon (Cymbopogon nardus), and leeks (Allium fistulosum).This research showed organic soybean with repellent plant had higher productivity than conventional soybean. Organic soybean with repellent plants had higher number of branches in 5 Weeks After Plant (WAP), the pod weight/plot, and 100 seeds dry weight. Growth and production of soybean were better under organic farming system than that under conventional farming. Soybean with repellent plant had lower total disease  intensity  than conventional treatment. Soybean with Tagetes erecta as repellent plant had lower  total  disease intensity  than other repellent treatment.   Key words: Organic vegetable soybean, repellent plant, pest and bulk disease intencity.  
Studi Alternatif Substrat Kertas untuk Pengujian Viabilitas Benih dengan Metode Uji Diatas Kertas Purbojati, Linggar; Suwarno, Faiza C.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Viability of small seed is usually tested with top of paper method using paper substrate, but filter and straw papers commonly used for substrate have become more expensive and scarce recently. The aim of this study was to find an alternative paper substrate for seed viability testing using top of paper method. The study consist of 12 experiments using 12 species i.e. pak choy, white mustard, chinese kale, cauliflower, cabbage, sesame, broccoli, green mustard, lettuce, carrot, red spinach and celery. The experiment was arranged in a Randomized Block Design with 10 replications. Sample of 50 seeds were tested on different paper substrate including straw paper, filter paper, stencil paper, CD paper and sterilized filter paper, to identify the best alternative substrate. Result of  the study showed that stencil and CD papers as a substrate for seed viability testing performed 100% similarity compared to straw paper. When filter paper was used as standard substrate, there wasn´t any paper has 100% similarity, but straw paper showed the highest (97.22%) followed by stencil paper (88.87%). Based on less than 5% coefficient of variation criteria, stencil paper was the best with 61.11% uniformity of seed viability data followed by straw paper (58.33%). In higher tolerance level with less than 10% coefficient of variance criteria, stencil paper was still the highest with 100% uniformity, followed by straw paper (97.22%). Stencil paper as germination substrate performed similar seed viability to the control straw and filter papers also produced high uniformity data. Stencil paper could be used for substrate viability testing of small seed with top of paper method.      Key words : Top of paper method, alternative, paper substrate, viability, coefficient of variance  
Aktivitas Nitrogenase, Serapan Hara dan Pertumbuhan Dua Varietas Kedelai pada Kondisi Jenuh Air dan Kering Ghulamahdi, Munif; Aziz, Sandra Arifin; Melati, Maya; Dewi, Nurwita; Rais, Sri Astuti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objective of this experiment was to study nitrogenase activity, nutrient uptake, and growth of two soybean varieties under saturated and dry soil conditions. The experiment was conducted in the plastic house at IPB Experimental Station, Babakan Sawah, Bogor, from August to November 2001. The experiment used the complete randomized design with four replications. The first factor was variety, consisted of Wilis and Bromo. The second factor was water condition, consisted of continuous saturated, saturated-dry, and dry conditions. Wilis and Bromo were not significantly different in nitrogenase activity; P and K uptake; nodule, stalk, leaf, pod, and seed dry weight. Wilis and Bromo were significantly different in root dry weight and leaf N uptake at 3 weeks after planting. Root dry weight and leaf N uptake of Wilis was lower than those of Bromo.The levels of nitrogenase activity, nutrient uptake, and plant weight under different water conditions were in the following order, from low to high, dry, saturated-dry, continuous. Under continuous saturated condition, nitrogenase activity, N uptake, P uptake, K uptake, nodule, root, stalk, leaf, and pod dry weight were 6800 %, 265 %, 320 %, 288 %, 1386 %, 362 %, 289 %, 265 %, 329 % of those under dry condition, respectively at 9 weeks after planting.    Key words:  Soybean, saturated culture, dry culture, nitrogenase activity, nutrient uptake
Pemilihan Karakter Agronomi untuk Menyusun Indeks Seleksi pada 11 Populasi Kedelai Generasi F6 Wirnas, Desta; Widodo, Imam; Sobir, Sobir; Trikoesoemaningtyas, Trikoesoemaningtyas; Sopandie, Didy
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

High-yielding variety is one of the targets in soybean breeding program. High-yielding variety could be developed through simultaneous selection. Simultaneous selection  using selection index was more efficient  than selection based on an individual trait only.  Objective of  the research was to select agronomic characters for construction selection index  on 11 soybean populations F6 generation based on correlation analysis, path analysis, and heritability.  The correlation analysis  showed that  number of branch,  number of total nod, number of filled pod, number of unfilled pod, number of total pod, and percentage of filled pod have positively and significantly correlated with  yield per plant.  Based on  path analysis, characters number of branch, number of unfilled pod, and number of filled pod have positive direct on yield per plant.   The result also showed that  number  of filled pod has maximum positive direct effect on yield per plant.  Generally, number of total nod, number of filled pod, number of total pod, and percentage of filled pod have higher heritability  than other characters.   Key words: Soybean, correlation, path analysis, heritability, selection index
Peningkatan Toleransi Kedelai Sindoro terhadap Kekeringan Melalui Seleksi In Vitro Husni, Ali; Kosmiatin, M.; Mariska, Ika
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

In vitro selection of embryogenic cell mass is one alternative to improve drought tolerance in plants. Embryogenic cell callus of soybean were radiated by Gamma ray (400 rad) to produce mutation. The radiated cell  were tested with PEG (0, 10, 20 and 30 %) for drought stress tolerance. After selection, cells which tolerant to PEG were regenerated to produce somatic embryo structure, somatic seed and plantlet. Acclimatization was done in a greenhouse and analysis of proline was done at generation 1 (G1). The purpose of the experiment was to get soybean somatic seed which tolerant to drought stress. Results of experiment showed that 39.7 % embriogenic callus were produced. The higher the concentration of PEG, the higher the death of cell/callus. The rate of producing somatic embryo structure was 4.9 at 0 % PEG; 2.85 at 10 % PEG; 1.6 at 20% PEG and 0.6 at 30% PEG. Number of somatic seed which developed in regeneration medium (S11) were 79 from 0% PEG;  35 from 10% PEG; 29 from 20% PEG, and 15 from 30% PEG. Somatic seed produced 15 planlets from PEG 0%; 6 planlets from PEG10%; 4 planlets from PEG 20%. Based of proline content, all of G1 somaclones were more tolerant  than the mother plant.     Key words : Soybean, in vitro selection, PEG, regeneration, acclimatization and dry land.                     
Ketenggangan Genotipe Jagung (Zea mays L.) Terhadap Cekaman Aluminium Syafruddin, ,; Sopandie, Didy; Trikoesoemaningtyas, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Aluminum (Al) toxicity is the main yield-limiting factor for maize growing on acid soils of tropical regions. This experiment was conducted to screen maize (Zea mays L) genotypes under Al stress in culture solution. The experiment was arranged in a split plot design with three replications. The main plots were Al concentrations (0, 2.5, 5 10, 20, and 40 ppm Al), and the sub plots were 22 maize genotypes. The results indicated that the genotype AMATL-(HS).C2, SATP-(S2)-C6-S0, MRSS-1(S1).C1-29-1, and MRSS-1(S1).C1-57-1  were more tolerant to Al-toxicity than the other genotypes including Antasena. The growth of Al-tolerant genotypes under low concentration of Al (2.5 ppm Al) was stimulated. The Concentration of 5 - 10 ppm Al in nutrient solution was adequate to separate genotypes between tolerant and sensitive genotypes in screening maize genotypes under Al stress. Relative net root length and relative root length were the best variable to be used as Al-tolerance indicators.   Key words: Maize, Al-tolerance,   Al-toxicity  
Pemanfaatan Cendawan Mikoriza Arbuskula dan Bakteri Azospirillum sp. untuk Meningkatkan Efisiensi Pemupukan pada Turfgrass Guntoro, Dwi; Chozin, M. A.; Tjahjono, Budi; Mansur, Irdika
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Introduction turfgrass varieties require fertilization with high dosage, but it can contaminate environment.  The increasing  efficiency of fertilizer absorbtion was expected to reduce fertilizer requirement.  The experiment was conducted to study the effect of arbuscular mycorrhizae and Azospirillum sp. on nutrient uptake, fertilization efficiency, growth and visual quality of turfgrass.  The experiment consisted of two factors, i.e. the dosages of fertilizer and inoculant types.  The dosages of fertilizer were the relatif dosage from recommended dosage (RD) i.e 100%RD, 75%RD, 50%RD, and 25%RD.  The recommended dosage was 0.5 kg N + 1.5 kg P2O5 + 0.5 kg K2O per 100 m2/month by compound fertilizer (15-15-15).  The treatment of 100%RD without inoculant was used as control.  The inoculant types were no inoculant, arbuscular mycorrhizal fungi (AMF), Azospirillum sp., and AMF+Azospirillum sp.  Factorial experiment was arranged in Randomized Block Design with three replications.  The results showed that interaction between inoculant type and dosage of fertilizer affected nutrient uptake, fertilizer efficiency, growth, and visual quality.  AMF inoculation and 25%RD increased shoot N uptake and N fertilizer efficiency, compared with control.  Azospirillum sp. inoculation at 75% RD increased shoot N concentration, but did not affect on shoot N uptake and N fertilizer efficiency compared with control.  Inoculant did not affect shoot P concentration, shoot P uptake, and P fertilizer efficiency.  Azospirillum and AMF+Azospirillum inoculation increased shoot K concentration.  AMF+Azospirillum inoculation and 100%RD increased shoot N concentration and shoot N uptake, compared with control.    Key words : Arbuscular mycorrhizal fungi, Azospirillum, fertilizer efficiency, nutrient uptake, turfgrass.

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