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 14 Documents
Search results for , issue " Vol 42, No 2 (2014): Jurnal agronomi indonesia" : 14 Documents clear
Toleransi 20 Genotipe Tanaman Tomat terhadap Naungan Baharuddin, Raisa; Chozin, M A; Syukur, Muhamad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACTLow light intensity is a limiting factor in the intercropping system. The aim of this study was to evaluate the production and fruit quality of 20 tomato genotypes under shading condition. This study was conducted at Cikabayan experimental station-University Farm of IPB from January to April 2013. The research was arranged in a nested design with three replicates. The main plot was shading intensity consisted of four levels, i.e., 0, 25, 50, and 75%, while the sub plot was 20 genotypes of tomato. Results of this study showed that the number and weight of fruit per plant under 25% shade were increased for most of the tested genotypes, while under 50% shade showed a high diversity among genotypes. Based on relative production under 50% shade, genotypes can be grouped into four, i.e: sensitive, tolerant, moderate, and shade-ecotype-like genotypes. 50% shade significantly affected total soluble solids and total titrated acid, but did not significantly the firmness of fruit of shade-ecotype-like genotypes.Keywords: intercropping, production, shade, quality
Peran Bakteri Penambat Nitrogen untuk Mengurangi Dosis Pupuk Nitrogen Anorganik pada Padi Sawah Widiyawati, Ida; ,, Sugiyanta; Junaedi, Ahmad; Widyastuti, Rahayu
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACTThe availability of nitrogen in soil is one of the limiting factors to support growth and rice productivity. Nitrogen-fixing bacteria have ability to utilize air nitrogen so it becomes available in the soil. The use of nitrogen-fixing bacteria could potentially reduce application of nitrogen fertilizer. The aim of the experiment was to determine the role of nitrogen-fixing bacteria in reducing inorganic N fertilizer on lowland rice. The research was conducted in April-August 2012 at the plastic house of Babakan Sawah Baru Experimental Station, IPB. The experiment was arranged in randomized block design with two factors, namely nitrogen fertilizer and type of bacteria. The dosage of N fertilizer (urea), i.e. 0, 50, 75 and 100 kg N ha-1. The types of bacteria, i.e. without bacteria, Azotobacter-like, Azospirillum-like, and consortium. The result of the experiment showed that N fertilization significantly affected to all variables except the percentage of empty grains per panicle, 1,000 grain weight, and N content of plant. The types of bacteria significantly affected to root dry weight, number of filled grain per panicle, greenness of leaf, uptake and content of nitrogen (shoot and grain), grain weight per plot. Consortium of bacteria were capable to reduce 25% the use of inorganic N fertilizer from recommendation doses (100 kg N ha-1) that based on the value of agronomic effectiveness.Keywords: Azospirillum-like, Azotobacter-like, consortium of bacteria
Analisis Dialel untuk Pendugaan Parameter Genetik Komponen Hasil pada Cabai (Capsicum annuum L.) menggunakan Metode Hayman Istiqlal, Muhammadl Ridha Alfarabi; Syukur, Muhamad; Wahyu, Yudiwanti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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Abstract

ABSTRACTThe diallel cross analysis method was developed to obtain genetic information involved in a population formed closely to Hardy-Wienberg equilibrium. The objective of this research was to study the genetic parameters on yield component of crossing on big and curly species of red pepper using Hayman approach for dialel cross-analysis method. This approach used 6 parental genotypes and 30 full-diallel cross combinations F1 hybrids. Appearance of the character was controlled by one up to two groups of positive additive genes. Each character observed has a partial dominance. Dominant genes were found much more in the parental characters of weight per plant (IPBC120), flesh thickness of fruit (IPBC2), fruit diameter (IPBC159), and fruit length (IPBC2). The broad sense heritability values on each character was high. Whereas, narrow sense heritability value for some characters were also high, except for character of weight per plant which were moderate.Keywords: additive effects, dominant effects, gene, heritability
Pembentukan Embrio Endospermik Sekunder Mangga (Mangifera indica L.) Gedong Gincu Klon 289 Hindaningrum, Irni Furnawanthi; Wiendi, Ni Made Armini; Widodo, Winarso Drajad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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Abstract

ABSTRACTThe improvement of Mangifera indica L. by conventional breeding approaches has been confounded by the long generation cycle, low fruit set, single seed per fruit and high degree of cross pollination. Biotechnology complements conventional breeding and expedite the mango improvement programs. Endosperm culture is a direct method to produce triploid plants. This study aimed  to obtain embryo from endosperm culture. The system of secondary somatic embriogenesis in mango described here represents a source of embryogenic material may be used for mass propagation and genetic manipulation of this crop. The method consisted of induction, proliferation, maturation, germination, and histological analysis of the obtaimed embryos. A protocol for plantlet regeneration was developed for Gedong Gincu mango clone 289 through secondary somatic embryogenesis. Primary somatic embryos (proembryo and cotyledonary embryos) were cultured in induction medium to induce the secondary somatic embryos. The best proliferation rate was 0.22 in medium with 1 g L-1 Poly Vinyl Pyrrolidone (PVP) for multiplication of secondary somatic embryos. Maturation of inoculum derived from the proliferation medium supplemented with 2 g L-1 of activated charcoal on medium containing 0.4 mg L-1 BAP provides the average 2.39 embryo formation of cotyledonari phase. The highest germination frequency (20%) was obtained in media with GA3 1.5 mg L-1.Keywords: endosperm, Gedong Gincu, Mangifera indica L, secondary endospermic embrio
Permodelan Pertumbuhan dan Produksi Kelapa Sawit pada Berbagai Taraf Penunasan Pelepah Gromikora, Nope; Yahya, Sudirman; ., Suwarto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACTThe numbers of leaf frond influence oil palm yield, especially fresh fruit bunch weight and fresh fruit bunch production. The objective of this research was to obtain oil palm growth and production model for different levels of frond pruning. The experiment was conducted at PT. Astra Agro Lestari, Pangkalan Bun, Central Kalimantan, from August 2011 to February 2012. The experiment was arranged in randomized block design with two factors and three replications for each oil palm age. Stella production model was created based on pruning experiment and weather data. Production model can predict 75% variable for oil palm production and fresh fruit bunch weight for different levels of pruning. Keyword: oil palm, Stella model, pruning management
Evaluasi Daya Simpan Benih Kedelai yang diberi Perlakuan Pelapisan Benih dengan Cendawan Mikoriza Arbuskula Manggung, Raden Enen Rindi; Ilyas, Satriyas; Bakhtiar, Yenni
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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Abstract

ABSTRACT The objective of this study was to evaluate the effect of seed coating with arbuscular mychorrhizal fungi (AMF) on viability and vigor of soybean seeds during 6 month storage. This study consisted of two experiments conducted at ambient room and air-conditioned room from May through December 2011. The experiments were arranged in  randomized complete block design with two factors. The first factor was seed coating i.e. untreated control and seed coating using AMF while the second factor was storage period i.e. 0, 1, 2, 3, 4, 5, and 6 months. Results of experiments showed that soybean seeds maintained the viability > 88% after 2 months stored in ambient room and >85% after 4 months stored in air-conditioned room. The viability of untreated and coated seeds did not show significant differences in both experiments. Untreated seeds indicated higher vigor either stored in ambient room (index vigor) or in air-conditoned  room (speed of germination). Seeds coated with AMF showed the rate of increase in moisture content slower than the untreated ones during 6 month storage in ambient room. After 6 month storage in air-conditioned room, the coated seeds had lower moisture content than the untreated. The viability of AMF spores coated on seeds was maintained during 6 month storage in both experiments.Keyword: seed storage, storage room, storage period, viability, vigor
Pola Akumulasi Prolin dan Poliamin Beberapa Aksesi Tanaman Terung pada Cekaman Kekeringan Kurniawati, Siti; Khumaida, Nurul; Ardie, Sintho Wahyuning; Hartati, N. Sri i; Sudarmonowati, Enny
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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Abstract

ABSTRACT Drought stress is one of the major limiting factors for plant growth and production. Therefore, the mechanism of drought tolerance is important to be studied. Eggplant (Solanum spp.) is relatively tolerant to drought stress compared to other member of Solanaceae family. The objective of this study was to study the mechanism of drought tolerance in eggplant related to accumulation pattern of proline and polyamines. Seven eggplant accessions were drought stressed for 21 days and rewatered for the following next 7 days. Drought stress treatment significantly decreased the soil water content and reduced plant height of all accessions. Eggplant responded the drought stress by reducing stomatal density and stomatal opening to reduce transpiration rate. Drought stress also induced proline and polyamine (PA) accumulation in the leaf tissues. These accumulations started at 14-days after drought stress period when soil water content less than 20% and reached their peaks at 21 days after drought stress. The highest level of proline (134.70 μmol g-1) and that of putrescine (20.836 ng g-1)  could  be used as indicators for eggplant drought stress condition. Keywords: physiological responses, polyamine (PA), proline, putrescine, stomata
Produksi dan Fisiologi Kedelai pada Kondisi Cekaman Kekeringan dengan Aplikasi Bradyrhizobium japonicum yang Diberi Penginduksi Genistein Hasanah, Yaya; Rahmawati, Nini
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACTMutualism symbiosis between B. japonicum and soybean root is a complex case and managed by molecular signal exchange. Genistein is one of the main isoflavones in soybean root exudates which is responsive to nod gen induction in B. japonicum. Drought stress could give negative effect on the symbiosis. The aim of the research was to study the role of B. japonicum induced by genistein on production and physiological characters of soybean under drought stress. The experiment was conducted in a green house, Faculty of Agriculture, University of Sumatera Utara, using a randomized complete block design with three factors. The first factor was genistein induction, consisted of  with and without genistein. The second factor  was B. japonicum inoculation consisted of  without B. japonicum,  isolate 1, isolate 2 and isolate 3. The third factor  was soil water content condition, consisted of 40%, 60% and 80% of field capacity. The parameters observed were shoot dry weight, root dry weight,  net assimilation rate, dry weight per plant, 50 seeds weight and proline content. The result showed that increasing drought stress conditions decreased shoot dry weight, root dry weight, net assimilation rate, effective nodules number, seeds dry weight per plant and 50 seeds weight. The result showed that as an inducer of B. japonicum in drought stress condition, genistein reduced the effects of water stress on root nodulation of soybean. Proline acts as osmoregulator for increasing tolerance to drought stress in plants.Keywords: drought, genistein, soybean, root nodulation
Induksi Tetraploid Tunas Pucuk Jeruk Siam Simadu (Citrus nobilis Lour) Menggunakan Kolkisin secara In Vitro Yulianti, Fitri; Purwito, Agus; Husni, Ali; Dinarti, Diny
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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Abstract

ABSTRACT Seedless fruit is one of the criteria necessary to improve the quality of Simadu tangerine. The most effective method to obtain seedless triploid cultivars is hybridisation between tetraploid and diploid parents. Simadu tangerine is diploid plant. Tetraploid Simadu tangerine can be obtained with doubling chromosome using colchicines. The aim of this research was to obtain tetraploid Simadu tangerine shoot which would serve as parent to produced seedless Simadu tangerine. Shoot-tips of Simadu tangerine without leaves were treated with colchicines at four different concentrations (0%, 0.1%, 0.2%, and 0.3%) for 3 hours.  The results showed that the high concentration reduced survival rate. The colchicine treatments reduced growth of shoot-tip of Simadu Tangerine. The leaves of colchicines treated shoots were thicker than control. Leaves from control (0% colchicine) and 0.1% colchicine treated shoots had 8.67 and 18.25 chloroplasts per pair of guard cells. Leaves from 0.1% colchicine treated shoots had lower stomatal density than those of the control (0% colchicine) shoots. Leaves from 0.1% colchicine treated shoots had larger stomatal sizes than those of the control (0% colchicine) shoots. Therefore, it appeared that 0.1% colchicine treatment resulted in tetraploid Simadu Tangerine Shoot.  Keywords: chloroplasts, doubling chromosomes, and stomatal size
Uji Cepat Toleransi Tanaman Padi terhadap Cekaman Rendaman pada Fase Vegetatif ,, Yullianida; Ardie, Sintho Wahyuning; Aswidinnoor, Hajrial
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACTThe major constraint of rice cultivation in the flood-prone area is the lack of tolerant varieties. A rapid screening method have to be developed under controlled environments, such as a green house, to improve the effectiveness and efficiency of the selection under submergence condition. The aim of this research was to study the correlation beetween selection methods in greenhouse and in the field. This experiment was conducted at a green house of Muara Experimental Station, Bogor in 2011/2012. The experimental designs used were randomized complete design for greenhouse experiment and randomized complete block design for field experiment, with three replicates respectively. There were four sub-experiments in the greenhouse experiment, grouped based on seedling age (10 days and 35 days after seeding) and duration of submergence (10 days and 14 days). Those sub-experiments in the green house were compared with the experiment in the field. The results showed that there was strong correlation between recovery percentage in the green house and percentage recovery in the field. The same correlation indeed happen between recovery percentage in the green house to grain yield. Complete submergence at 10-day-old seedlings in green house could be developed as rapid selection method for submergence tolerant rice.Keywords: aciotic stress, correlation, flooding, Oryza sativa

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