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 870 Documents
Kandungan, Resorpsi N dan P serta Specifi c Leaf Area Daun Kakao (Theobroma cacao L.) pada Cekaman Kekeringan Prihastanti, Erma; Tjitrosemito, Soekisman; Sopandie, Didy; Qayim, Ibnul; Leuschner, Christoph
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 1 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Plant nutrient absorptions depend on their environment and plants’ stage of development. Beside from soil, nutrient absorption also proceed through resorption in leaves. The resorption efficiency varies based on types of habitat. Drought stress also influences the efficiency of nutrient resorption, growth rate, and plant development. The purpose of this research was to study the change of nitrogen (N) and phosphorus (P) content and leaf resorption value of N and P, and specifi  c leaf area of 6-years old cacao  grown under drought stress. Research was carried out in a cacao plantation with 7-years old Gliricidia sepium Jacq. as shading trees. The results showed that drought stress with Troughfall Displacement Experiment (TDE) system did not affect the content and resorption level of N and P of cacao leaves. However, N resorption of cacao leaves tended to increase while P resorption decreased. Cacao plants experienced drought stress have the ability to resorp leaf N for 46.64-50.63%, leaf P  for 47.98-58.40%, whereas, the control plants had the leaf N resorption of 45.05-52.97%, and leaf P resorption of 36.64-44.10%. Drought stress for 13 months on 6-years old cacao did not affect  specific  c leaf area.   Keywords: drought stress, N and P resorption, specifi  c leaf area, Theobroma cacao L.
Studi Pemberian Kalsium untuk Mengatasi Getah Kuning pada Buah Manggis (Garcinia mangostana L.) Dorly, ,; Wulandari, Indah; Tjitrosemito, Soekisman; Poerwanto, Roedhy; Efendi, Darda
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 1 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Gamboge is the main problem in mangosteen agribusiness because it is one of the major factors lowering fruit quality. Calcium is one of the important elements that strengthening cell wall; it is which was binding with the pectin as a middle lamella component. The objectives of the research were to study the effect of calcium application on the presence of gamboge spots, physical, and chemical properties of mangosteen fruit. Trial was conducted in a randomized complete block design with three replications in two consecutive years.  The calcium source was dolomite, applied in four different dosages, i.e. 0, 18, 24, and 34 ton ha-1 for the fi  rst year and 0, 12.5, 15, and 17.5 ton ha-1 for the second year. The results showed that calcium application raised soil pH and calcium content of the soil, exocarp and mangosteen leaves. Dolomite applications using 18 and 24 ton ha-1 in the first year and 17.5 ton ha-1 in the second year were effective to reduce gamboge spots on the outer part of fruit, however they were not effective to reduce gamboge in aril. Dolomite applications did not increase transversal diameter, fruit weight, total soluble solids, total titratable acids, and ratio of total soluble solids with total titratable acids of the fruits.   Keywords: aril, cell wall, dolomite, exocarp
Aplikasi Pupuk Inorganik Meningkatkan Produksi dan Kualitas Pucuk Kolesom pada Musim Hujan Mualim, Leo; Aziz, Sandra Arifin; Susanto, Slamet; Melati, Maya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 40, No 2 (2012): JURNAL AGONOMI INDONESIA
Publisher : Bogor Agricultural University

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Abstract

using complete randomized block design with three replications. The means from each plot were compared by using t-student’s test. Application of inorganic fertilizer resulted in a higher shoot production (at 6 week after planting) and a better quality leaves compared to other treatment. This research revealed that high quality waterleaf can be indicated by some criterias, i.e., higher content of primary metabolites (sugar and protein), secondary metabolites (phenolic, flavonoid, and chlorophyll), and antioxidant capacity (low IC50 value). Therefore, application of inorganic fertilizer in wet season is recommended to produce high yields and high quality water leaf. Keywords: sugar, protein, phenolic, flavonoid, DPPH
Respon Klon Karet terhadap Frekuensi Penyiraman di Media Tailing Pasir Pasca Penambangan Timah Inonu, Ismed; Budianta, Dedik; Wiralaga, Ali Yasmin Adam; Umar, Muhammad; Yakup, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 2 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Sand tailings derived from tin post-minings activities have high porosity, low water holding capacity, and low organic matter content.  These conditions causes soil water deficit, especially in dry season. To increase the successful of  sand tailings revegetation  with rubber tree,  it is important to select some rubber tree clones based on their adaptability on the sand  tailings conditions, especially drought stress. This research aimed to study the response of several rubber tree clones to the frequency of watering on sand tailings. The experiment was conducted in a plastic house at the experimental station of Agrotechnology  Study Program of Bangka Belitung University, Sungailiat for 4 months. The experimental design  was a factorial randomized block design with two factors and three replications. The first factor was the frequency of watering (every day, every 3 days, and every 5 days), the second factor was a combination of recommended rootstock clones and recommended latex clones (clone GT 1 + PB 260, GT 1 + IRR 118, and PB 260 + BPM 24). The results showed that watering every 5 days caused  drought stress resulted in impaired  growth of rubber  in sand tailings media derived from tin post-mining.  The combination of rootstocks and scions PB  260 + BPM 24 and PB 260 + IRR118 were categorized as moderately tolerant clones while GT 1 + PB 260 was categorized as sensitive clones to drought stress in the  sand tailings media.   Keywords: drought tolerance, watering frequency, rubber tree clones, sand tailings
Uji Inokulasi dan Respon Ketahanan 38 Genotipe To mat terhadap Clavibacter michiganensis subsp. michiganensis Zainal, Aprizal; Anwar, Aswaldi; Ilyas, Satriyas; Sudarsono, ,; Giyanto, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 2 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Identifi kasi ketahanan genotipe adalah langkah awal dalam pengembangan kultivar tahan terhadap serangan patogen. Tujuan penelitian ini adalah (i) mendapatkan cara inokulasi dengan jumlah dan konsentrasi inokulum Cmm yang efektif untuk mengevaluasi ketahanan tomat terhadap Cmm di rumah kaca, (ii)  mendeterminasi reaksi ketahanan berbagai genotipe tomat akibat inokulasi Cmm. Percobaan ini menggunakan 38 genotipe tomat yang terdiri dari 7 genotipe tomat lokal, 15 genotipe tomat komersial, dan 16 genotipe koleksi Pusat Studi Pemuliaan Tanaman IPB Bogor (PSPT/IPB). Agen penyebab penyakit yang digunakan adalah 6 isolat Cmm hasil percobaan sebelumnya. Cara inokulasi Cmm yang efektif terhadap tomat cv. Marta (sangat rentan),  uji reaksi ketahanan berbagai genotipe tomat terhadap Cmm telah dilakukan di rumah kaca.  Kesimpulan dari penelitian ini adalah (i) inokulasi dengan menyuntikkan inokulum Cmm 5 µl konsentrasi 106 cfu/ml pada beberapa tempat di ketiak daun (daun pertama, daun tengah dan pucuk) merupakan cara yang paling efektif mengevaluasi ketahanan tomat terhadap Cmm, (ii) berbagai genotipe tomat yang diuji belum ada yang tahan teradap Cmm, genotipe tomat lokal ada yang agak rentan dan agak tahan.Kata kunci: kultivar tahan, suspensi bakteri, tomat
Diallel Analysis of Chili (Capsicum annuum L.) Resistance to Phytophthora capsici Leonian Yunianti, Rahmi; Sastrosumarjo, Sarsidi; Sujiprihat, Sriani; Surahman, Memen; Hidayat, Sri Hendrastuti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 3 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

 To accomplish the study of genetic parameters of chili resistance to P. capsici, thirty cross combinations from six parents’ crosses were made by full diallel method.  The resistance was assessed based on the incidence of disease, following the inoculation of 28 days-old plant of chili.  Inoculation was done by dropping 5 mL of inoculum (105 zoospore mL-1) at the base part of each plant. There was non-allelic interaction and overdominance effect. Chili resistance to P. capsici controlled by   one   positive   gene.  The  parents   contained   more  dominant  gene, with dominance order were IPB-C4, IPB-C10, IPB-C15,  IPB-C9,  IPB-C8,  and  IPB-C2. The prediction of the possible limits of selection if homozygote genes assemble on one individual was 0.676-0.691. Broad-sense and narrow-sense heritability values for the traits were high.    Keywords: chili, diallel analysis, genetic parameter, Phytophthora capsici  
Peramalan Produksi Kelapa Sawit menggunakan Peubah Agroekologi di Kalimantan Selatan Santosa, Edi; Sulistyo, Hari; Dharmawan, Iwan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 3 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Estimation on oil palm production is important for company planning. However, there are only few studies have been conducted in Kalimantan. The objective of the study was to identify agronomic and agroecological factors determined production of oil palm in Kalimantan. The study was conducted at PT Ladangrumpun Suburabadi, Minamas Plantation Angsana Estate, Tanah Bumbu District, South Kalimantan, Indonesia from February 15 to June 15, 2010. Data were collected from the company, government institutions and interviews with the company staffs. Results showed that seven parameters significantly determined estimation of oil palm production. Out of 18 possible linier models, 6 models showed good fit as predictor. The best modeling as predictor was determined by current plant age (in months), fertilizer application at 18 months before harvest (MBH), relative air humidity at 6 MBH (%), light intensity at 18 MBH (%), rainfall at 6 MBH (mm), level of water deficit at 24 MBH (mm) and number rainy day at 18 MBH (days). It was expressed in equation Y = 3.15 + 0.010 age -0.016 fertilizer -0.016 light intensity -0.005 water deficit -0.015 number of rainy day. This finding implies that recording data of agronomic and ecological factors are important for production estimation. Eventhough the model is best fit to the study site, however, it needs further verification when applied in larger area of the other sites in Kalimantan.   Keywords: agronomic factors, Elaeis guineensis, linier regression, modeling, production estimation  
The Effects of Cutting Heights and Intervals of Defoliation on Productivity and Nutrient Content of Brachiaria humidicola (Rendle) Schweick Anis, Selvie Diana; Chozin, Muhamad Ahmad; Hardjosoewignyo, Soedarmaji; Ghulamahdi, Munif; Sudrajat, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 3 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The productivity of forage is strongly  influenced  by cutting height  and  interval of defoliation.   Experiment was conducted at the Research Institute for Industrial Plants and Other Palm (BALITKA) Manado since June 2008 until April 2009.  The objective of the experiment was to find out the effects of intensity and intervals of defoliation on dry weight production and the quality of nutrients.  The experiment was arranged in factorial RCBD. The intensity of defoliation was based  on  cutting  height,  i.e.  5, 10, 15 cm,  whereas the intervals of defoliation were 30, 45, 60 day and 456.54 Degree Days (DD). The data of dry weight production, leaf stem ratio, nutrient quality were collected. The results showed that there were  significant effects of  treatments on  all  parameters. Productivity of  B. humidicola  in terms  of high dry weight yield, high leaf  stem  ratio and crude protein,  low  crude fiber and acid detergent fiber (ADF) content were found in the interaction of intensity 10 cm with the interval of defoliation  among  the  vegetative development  stage of 30 and 45 days, as well as the interval of defoliation  based  on  heat unit accumulation of  456.54 DD.   The research implies  that a cutting height at 10 cm  and  interval of  defoliation  as mentioned  above  is ideal for B. humidicola.  Utilization of growing degree days (GDD) to determine the appropriate time for defoliation is considerable under this experiment.   Keywords: B.  humidicola, defoliation, forage, nutrient,  productivity      
Keragaan Hasil Beberapa Va rietas Padi Hibrida pada Beberapa Te knik Pengairan Munarso, Yu niati Pieter
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 3 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The experiments were conducted  at farmer’s rice field in Sidowayah (the district of Ngawi) and Karangrejo (Magetan), from August to November 2009. The objective of this research was to evaluate growth and yield performance of several hybrids of rice at different irrigation techniques. The experiments were arranged in a split plot design with 3 replications. The main plots were three water application methods, i.e. (a) continuously flooded at 3 cm above soil from 10 DAT (days after transplanting) to 7 DPH (days preceeding harvest); (b) alternating wet-dry method with 10 cm depth (threshold level); and (c) alternating wet dry method with 15 cm depth. The sub plots were five hybrid rice varieties. Results showed that the alternating wet-dry irrigation methods, with both of 10 cm and 15 cm depth as water threshold levels did not decrease the plant height, number of tiller per hill, as well as grain yield and overall yield components. Therefore, development of hybrid rice could be executed either at the continuous irrigation system area or at the area with intermittent irrigation system. Hybrid rice of Sembada and Sl-8 showed to have the highest yield. The high yield was supported by the yield components, i.e. total filled grain per panicle and 1,000 grain weight.   Keywords: growth, hybrid rice, irrigation, variety, yield  
Seleksi Genotipe Padi Mutan Insersi Toleran Cekaman Salinitas Berdasarkan Karakter Pertumbuhan dan Biokimia Situmorang, Apriadi; Zannati, Anky; Widyajayantie, Dwi; Nugroho, Satya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 1 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Eleven genotypes of insertional mutant Nipponbare rice carrying randomly inserted activation tag were tested to investigate the growth and biochemical responses to salt stress. Pokkali, IR 29, and non-transgenic Nipponbare were used as tolerant, susceptible, and isogenic control, respectively. Plants were grown in plastic trays filled with 0  g L-1 NaCl  Yoshida nutrient solution as control and grown in 6 g L-1 NaCl as treatment. Salt injury was scored on 10, 16, and 21 days after salinization. Observation at 21 days after salinization showed that there was significant  difference  among genotypes in growth and biochemical characters. Classification  using hierarchical cluster analysis based on growth and biochemical responses showed that there were three clusters. Cluster I consisted of wild-type Nipponbare, T2.pMO.V.3.13.c.22, T2.pMO. V.1.7.a.15, T2.pMO.III.98.b.7, T2.pMO.II.231.c15, T2.pMO.III.98.b.8, T2.pMO.III.98.b.17, T2.pMO.III.98.b.3, and T2.pMO.VI.81.3.a.4. Cluster II consisted of IR 29, T2.pMO.V.3.13.c.14, T2.pMO.VI.30.1a.125, and T2.pMO.VI.30.1.a.65. However no mutant genotype was clustered with Pokkali in cluster III, which may indicate that there was no salt tolerant mutant genotype found in this research.   Keywords: salt tolerance mutant rice, growth characters, biochemical characters

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